You subtract 90 from the 300 dollar goal and you’re left with $210. If you then divide that by 10.50 the answer will be 20. So the answer is 20 weeks.
Help me with this please
The answer is:
[tex]cos(R)=\frac{1}{2}[/tex]
Why?Since it's a right triangle and we need to know the adjacent side of the triangle, in order to find cos(R), we can use the Pythagorean Theorem.
Pythagorean Theorem formula:
[tex]c^{2}=a^{2} +b^{2}[/tex]
Where:
[tex]c=hypotenuse=20\\a=FirstTriangleSide=AdjacentSide\\b=SecondTriangleSide=OppositeSide=10\sqrt{3}[/tex]
So, the adjacent side will be:
[tex]AdjacentSide=\sqrt{c^{2}-b^{2}}=\sqrt{20^{2}-(10\sqrt{3})^{2}}=\sqrt{400-100*3} \\AdjacentSide=\sqrt{100}=10[/tex]
Now, that we know the adjacent side, we can calculate cos(R), so:
[tex]cos(R)=\frac{AdjacentSide}{Hypotenuse}=\frac{10}{20}=\frac{1}{2}[/tex]
Have a nice day!
Answer:
cosine∠R = 1/2
Step-by-step explanation:
We have to find the figure of triangle.
We have to find the cosine∠R.
First we find the base of triangle.
We have formula: Hypotenuse² = Base² + perpendicular²
Hypotenuse = 20
Base= ?
perpendicular = 10√3
Applying formula we get,
Base = √20² - (10√3)²
base = 10
As we know that :
cosФ = base/hypotenuse
cosine∠R = 10/20
cosine∠R = 1/2 is the result.
1.) In a class of 45 students , 80% received A’s on a Math test . How many students received an A?
2.) Mary spent 15 dollars. If this was 20% of her earnings, how much money did she earn ?
Step-by-step explanation:
1) 45 times 0.8 (which is equivalent to 80 percent) is 36 students.
2) 15 divided by 0.2 is 75, so she earned 75 dollars
choose which of these is the net of a cube
The answer is C as the net of a cube.
Further explanationWe will select which of four options are the net of a cube.
Remember the net of a cube is composed of six squares.
The answer to this problem is C. Because of the four options, only C has six squares as a condition of a net of cubes.
Following comprises the steps to construct a cube from the net of C:
Indicate a number in each square.Make square-1 the bottom.Fold up the square-2 and square-3 together so that square-3 becomes the left side while square-2 becomes the top of the cube.Fold up to square-4 and square-5. As follows square-4 as the back side while square-5 as the right side of the cube.Finally, fold up the 6th square into the front side of the cube.- - - - - - - - - -
Notes:
A net represents a flat shape that will fold up to make a three dimensional object. In our case, the net folds up to make a cube. The net of a cube is composed of six squares. One square is chosen to be the bottom as a reference to get started. A net of a cube will be correct if each square is folded and does not meet with the others. Undoubtedly the square which is the bottom will be overlooked with the top square.It is recommended that each square on the net be numbered so that it is clearly observed when folded.Learn moreWhat is the volume of a cuboid? https://brainly.com/question/10730070Find out the area of a cube https://brainly.com/question/12613605#Which an expression represents the height of the pyramid? https://brainly.com/question/2567975Out of the given nets, option C is the net of a cube.
What is the net of a cube?A net of a cube is a two-dimensional shape that can be folded into a three-dimensional figure.
We know that the total number of faces in a cube is 6
So total faces required to make a net of the cube = 6
Options A, B, and D are having 5 faces so they cannot make a net.
So the correct option is option C and we can fold the net to make a cube.
Hence, Out of the given options, option C is the net of a cube.
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Plz help me!!!!!!!!!!!
Answer: c) imaginary
Step-by-step explanation:
(√5) is irrational but (√-1 )is not a valid number, therefore, (√-5) is imaginary.
How long does it take for a deposit of $1400 to double at 2% compounded continuously?
Answer:
34.66 yr
Step-by-step explanation:
The formula for interest compounded continuously is
[tex]A = Pe^{rt}[/tex]
Data:
P = $1400
r = 2 % = 0.02
Calculations:
(a) Calculate A
A = 2 × 1400 = $2800
(b) Calculate t
[tex]2800 = 1400e^{0.02t}[/tex]
[tex]2 = e^{0.02t}[/tex] Divided each side by 1400
ln2 = 0.02t Took the ln of each side
t = ln2/0.02 Divided each side by 0.02
t = 34.66 yr
It will take 34.66 yr for the investment to double at 2 % interest compounded continuously.
Check:
2800 = 1400e^{0.02×34.66}
2800 = 1400e^{0.6931}
2800 = 1400 × 2
2800 = 2800
The value of sqrt-9 is not -3 because
Answer with explanation:
The value of square -9 is not -3 ([tex] \sqrt { - 9 } \neq - 3 [/tex]).
It is because we cannot take a square root of a negative number since any number multiplied by itself is a positive number so you never get a negative value.
Therefore, it given an error if you try to take a square root of a negative number on a calculator.
Answer:
The value of √-9 is not -3 because we cannot take the square root of negative numbers
Step-by-step explanation:
It is not possible to take square root of a negative number.
If any positive number we can take its square roots.
-9 is a negative number.
√9 = ±3 means that,
√9 = 3 or √9 = -3
3 * 3 = 9 and -3 * -3 = 9
Therefore the value of √-9 is not -3
area of 2 triangles area of 3 rectangles surface area= total area of triangles and rectangles. the surface area
What do you mean? I dont understand.
Answer:
52.8cm
Step-by-step explanation:
Add the area of all the faces together and you get 52.8
What is the distance ?
The solution is you need to subtract the y axis and x axis
Christa solved the equation 5 (x-2)+6= 2x-4+ 3x and obtained -4 = -4. This means that the equation has
A. No solution
B. One solution
C. Two solutions
D. Many solutions
Step-by-step explanation:
Since -4 is indeed equal to -4, we can say that D, there are many solutions since all real numbers are a solution because any number is equal to itself :)
The equation 5(x-2)+6 = 2x-4+3x has infinitely many solutions.
Explanation:To solve the equation 5(x-2)+6 = 2x-4+3x, we start by distributing the 5 to the terms inside the parentheses: 5x - 10 + 6 = 2x - 4 + 3x. Next, we combine like terms on both sides of the equation: 5x - 4 = 5x - 4. This simplifies to 0 = 0, which means that both sides of the equation are equal.
Since the equation is true no matter what value of x we choose, this means that the equation has infinitely many solutions.
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HELP URGENT! WILL GIVE BRAINLIEST!!
1) What is the value of 8!?
A) 8
B) 64
C) 512
D) 40,320
2) What is the value of 5P5?
A) 5
B) 25
C) 120
D) 125
3) What is the value of 8P4?
A) 40,320
B) 1,680
C) 32
D) 24
4) What is the value of 7P7?
A) 1
B) 14
C) 49
D) 5,040
5) Four out of nine performers will be chosen to in a row on stage. How many ways can the 4 performers stand in a row?
A) 362,880
B) 347,760
C) 15,120
D) 3,024
Answer:
1) 8 2) 125 3) 1,680 4) 5,040 5) 3,024
Step-by-step explanation:
Answer:
FRee points man idc about the question
which of the following sets does the number 3.14 belong to ? -whole number , integers, rational numbers , irrational numbers, real numbers, non of the above . Select all that apply .
The number 3.14 is a rational number and since all rational numbers are real numbers, it is a real number too.
The set of numbers that 3.14 belongs to is a rational number and a real number.
A rational number simply means a number that has a whole number and a quotient. In this case, such a number has a whole number and decimal fractions.
Therefore, since the number given is 3.14, this implies that the number is a rational number. Also, it should be noted that a rational number is also a real number.
Therefore, 3.14 is a rational number and a real number
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What is the length of segment CD question mark
CD = two square root of 10 end square root
CD = 6
CD = 8
CD = 40
Answer:
CD = two square root of 10 end square root
Step-by-step explanation:
To find the length of a segment, use the distance formula. Substitute the order pairs for the endpoints of the segment. CD has the end points (-7, -4) and (-1, -2).
[tex]d = \sqrt{(y_2-y_1)^2 + (x_2-x_1)^2} \\\\d = \sqrt{(-4--2)^2 + (-7--1)^2} \\\\d = \sqrt{-2^2 + -6^2}\\\\d = \sqrt{4 + 36}\\\\d=\sqrt {40} = 2\sqrt{10}[/tex]
To find the length of segment CD, use the distance formula:
[tex]\[d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}.\][/tex] For CD with endpoints (-7, -4) and (-1, -2),
[tex]\[d = \sqrt{40} = 2\sqrt{10}.\][/tex]
To determine the length of a segment, utilize the distance formula by substituting the coordinates of the endpoints. In the case of segment CD, the endpoints are (-7, -4) and (-1, -2).
To determine the length of a segment, the distance formula is applied, denoted as:
[tex]\[ d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \][/tex]
For segment CD with endpoints (-7, -4) and (-1, -2), the distance is computed as follows:
[tex]\[ d = \sqrt{(-1 - (-7))^2 + (-2 - (-4))^2} \][/tex]
This simplifies to:
[tex]\[ d = \sqrt{(6)^2 + (2)^2} \][/tex]
[tex]\[ d = \sqrt{36 + 4} \][/tex]
[tex]\[ d = \sqrt{40} \][/tex]
Hence, the length of segment CD is [tex]\(\sqrt{40}\)[/tex] units. This result can be further expressed as [tex]\(2 \sqrt{10}\)[/tex] by factoring out the square of the largest perfect square, which is 4, from 40. Therefore, the exact length of segment CD is [tex]\(2 \sqrt{10}\)[/tex] units.
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What is the wavelength of a sound wave that has a speed of 250 m/s and a frequency of 400 Hz?
I will give brainest if you help me asap! 15 POINTS!!
0.50 m *100 Hz
= 50m/s I really hope this helps!
i dont understand the question for D can someone please explain it
Answer:
71°
Step-by-step explanation:
The average temperature is calculated as
Average = [tex]\frac{sum}{count}[/tex]
let x be the temperature in October, then
[tex]\frac{25+70+65+85+92+82+x}{7}[/tex] = 70, that is
[tex]\frac{419+x}{7}[/tex] = 70 ( cross- multiply )
419 + x = 490 ( subtract 419 from both sides )
x = 71
Average temperature in October was 71°
Last year Jo paid £245 for her car insurance. This year she has to pay £883 for her car insurance. Work out the percentage increase in the cost of her car insurance.
Answer:
260%
Step-by-step explanation:
To solve how much the percentage increase cost of Jo's car insurance is, we first need to list down our variables.
1st year = £245
2nd year = £883
First off, we need to find the difference of the two.
Increase = £883 - £245
Increase = £638
Now to find the percentage increase, we take our increase and divide it by our 1st year's payment and multiply it by 100.
Percentage increase = [tex]\dfrac{638}{245}*100[/tex]
Percentage increase = [tex]2.60*100[/tex]
Percentage increase = 260%
So the percentage increase of last years payment to this years payment is 260%.
Given: circle k(O), m AM=125°, m EF=31°, m∠MAF=75°. Find: m∠AME
Answer:
58°
Step-by-step explanation:
If m AM=125°, then m∠AOM=125°.
If m∠MAF=75°, then m∠MOF=150° (because central angle MOF subtends on the same arc as inscribed angle MAF).
Thus,
m∠FOA=360°-150°-125°=85°.
If mEF=31°, then m∠EOF=31° (as central angle subtended on the arc EF).
Hence,
m∠EOA=m∠EOF+m∠FOA=31°+85°=116°.
Angle EOA is central angle subtended on arc EA, angle AME is inscribed angle subtended on arc AE, thus
m∠AME=1/2m∠EOA=58°.
Write the expression as a single natural logarithm.3In3+3Inc
Answer:
[tex]ln(27c^3)[/tex]
Step-by-step explanation:
Given: [tex]3ln(3)+3ln(c)[/tex]
If there is a coefficient in front of a [tex]log[/tex] or [tex]ln[/tex], that means it becomes an exponent.
[tex]ln(3^3)+ln(c^3)[/tex]
Simplify the exponent.
[tex]ln(27)+ln(c^3)[/tex]
When there is addition between two logarithms or natural logarithms, it means they multiply together.
[tex]ln(27c^3)[/tex]
Answer:
[tex] \ln 27c^3 [/tex]
Step-by-step explanation:
[tex] = 3\ln 3 + 3\ln c [/tex]
[tex] = \ln 3^3 + \ln c^3 [/tex]
[tex] = \ln 3^3c^3 [/tex]
[tex] = \ln 27c^3 [/tex]
Lisa has 2 red dresses, 3 green dresses and x blue dresses hanging in her closet. If lisa chooses one dress at random, the probability that lisa will choose a red dress is 25%. How many blue dresses does lisa have?
Lisa has a total of 8 dresses in her closet. There are 2 red dresses, 3 green dresses, and the remaining 3 are blue dresses.
Explanation:The subject of the question is probability in Mathematics. In the problem, Lisa has a total of 2 red dresses and 3 green dresses. The quantity of blue dresses is represented by 'x'. It is stated that the probability of choosing a red dress is 25%. Each dress in her closet is an outcome for this probability calculation.
So, in total, she has 2(red dresses) + 3(green dresses) + x(blue dresses) = 100% of the dresses or total outcomes. Since the probability of picking a red dress is 25%, then 2 (red dresses) are 25% of the total outcomes.
To work out the total number of outcomes (total dresses), we calculate 100% ÷ 25% = 4, and then multiply this by the number of red dresses (which is 2), giving us 4*2 = 8 dresses in total.
As we know there are 2 red dresses and 3 green dresses, that leaves 8 (total dresses) - 2 (red) -3 (green) = 3 blue dresses. Thus, Lisa has three blue dresses in her closet.
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Lisa has 6 blue dresses.
Explanation:To find the number of blue dresses Lisa has, we need to set up an equation using the given information.
Lisa has 2 red dresses, 3 green dresses, and x blue dresses. The total number of dresses is 2 + 3 + x = 5 + x.
The probability of choosing a red dress is 25%, which can be written as 0.25.
This means that the number of red dresses divided by the total number of dresses equals 0.25. So, we have 2 / (5 + x) = 0.25.
Solving this equation for x, we find that Lisa has 6 blue dresses.
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Rugs sell for $8 per square foot Beth bought a 9-foot-long rectangular rug for $432 how wide was the rug
What is the y intercept of the function f(x) = -2/3x + 1/3
Answer:
(0, 1/3)
Step-by-step explanation:
You find the y-intercept when the x value is 0, so plug in 0 for x and simplify
f(x) = -(2/9)(0) + 1/3
f(x) = 1/3
The y-intercept is at the point (0, 1/3)
Solve for x.
x = ___
Answer:
Solve y=x^2+2 for x.A.B.C.D
Step-by-step explanation:
sorry lamo
Jonas has two jobs last year and he received two W-2 forms on the first W-2 form the figure in box 1 was $19,328.98 while on second W-2 form the figure in box 1 was $7174.86 what was Jonas gross income from the two jobs last year?
Answer:
Gross income of Jonas from the two jobs is $ 26,503.84
Step-by-step explanation:
W-2 form is used in USA by to employees to show the money earned by them.
The gross income of Jonas will be the sum of two values.
Gross income= $19,328.98 + $7174.86
= $ 26,503.84
Answer:
$26,503.84
Step-by-step explanation:
The elevations of three cities in the Netherlands are shown below. Which comparison is true?
Answer:
The answer is the first choice "A"
Step-by-step explanation:
I have done this test
The comparison which is true is Amsterdam is the same distance from sea level as Drachten.
How to find which comparison is true?Here negative sign indicates the direction.So, we can see the Amsterdam is at same distance from sea level as Drachten. The negative sign indicates that Amsterdam is 2 m below the sea level.
So, option A is correct.
Drachten is 2 m higher then the sea level and is clearly higher than Rotterdam which is 4 m below the sea level.So, option B is incorrect.
The distance of Rotterdam from sea level is 4 m whereas that of Drachten is 2 m. So the distance of Rotterdam from sea level is greater than that of Drachten.So option C is incorrect.
Rotterdam which is 4 m below the sea level and is clearly lower than Amsterdam which is 2 m below the sea level.So option D is incorrect.
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WHich choice is equivalent to the expression below? √-125
Answer:
Final simplified form is [tex]5\sqrt{5}i[/tex]
Step-by-step explanation:
We have been given an expression [tex]\sqrt{-125}[/tex]
Now we need to simplify [tex]\sqrt{-125}[/tex] and check which choice matches with simplified form of [tex]\sqrt{-125}[/tex].
You missed to provide the choices but still we simplify that.
[tex]\sqrt{-125}[/tex]
[tex]=\sqrt{-5*5*5}[/tex]
[tex]=5\sqrt{-5}[/tex]
When there is negative sign inside square root then we replace that by "i" iota.
[tex]=5\sqrt{5}i[/tex]
Hence final simplified form is [tex]5\sqrt{5}i[/tex]
huong and kathyrn each day impeoved their yards by planting rose bushes and ornamental grass. they bought their supplies from the same store. huong spent $70on 14 rose bushes and 7 bunches of ornamental grass. kathyrn spent $71 on 5 rose bushes and 14 bunches of ornamebtal grasa. what is the cost of one rose bush and the cost od ine bunch of ornamental geass?
Answer:
One rose bush = $3
One bunch of ornamental grass = $4
Step-by-step explanation:
We can set up a system of equations to solve for this. Let cost of 1 rose bush be r and cost of 1 ornamental grass be g. Thus we can form 2 equations:
[tex]14r+7g=70\\5r+14g=71[/tex]
We can multiply the first equation by -2 so that we can eliminate g. Thus, we have:
[tex](*-2)14r+7g=70\\5r+14g=71\\-------\\-28r-14g=-140\\5r+14g=71\\--------\\-23r=-69\\r=\frac{-69}{-23}=3[/tex]
Thus, 1 rose bush is $3. Now plugging in r = 3 into the first original equation, we can solve for g:
[tex]14r+7g=70\\14(3)+7g=70\\42+7g=70\\7g=70-42\\7g=28\\g=\frac{28}{7}=4[/tex]
Thus, 1 bunch of ornamental grass is $4.
Austin reads 8 books. He reads 4 more books than Emily. How many books does Emily read?
Answer: 4
Step-by-step explanation: Austin reads 8 he reads 4 more. 4+4=8
the value of y varies directly with x, and when x = 1/4 , y = 25. What is the value of y when x is 2 1/3 need help ASAP
Answer:
[tex]y=233\frac{1}{3}[/tex]
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]y/x=k[/tex] or [tex]y=kx[/tex]
In this problem we have
For [tex]x=1/4, y=25[/tex]
Find the value of k (constant of proportionality)
[tex]y/x=k[/tex] -----> [tex]k=25/(1/4)=100[/tex]
The linear equation is
[tex]y=100x[/tex]
Find the value of y when the value of [tex]x=2\frac{1}{3}[/tex]
substitute the value of x in the equation but first convert to an improper fraction
[tex]x=2\frac{1}{3}=\frac{2*3+1}{3}=\frac{7}{3}[/tex]
[tex]y=100(\frac{7}{3})=\frac{700}{3}[/tex]
convert the result in mixed number
[tex]\frac{700}{3}=\frac{699}{3}+\frac{1}{3}=233\frac{1}{3}[/tex]
What is the factorization or the trinomial below? -2x^3+2x^2+12x
The answer is C because the 2x outside of the brackers must be negative to produce the beginning term. The next terms are positive and two negatives make a positive, therefore we can conclude that there must be a negative inside the brackets too.
Answer: C. −2x(x−3)(x+2)
Step-by-step explanation:
1. Find the Greatest Common Factor (GCF).
GCF=2x
2. Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)
2x(2x^3/2x+−2x^2/2x+−12x/2x)
3. Simplify each term in parentheses.
−2x(x^2−x−6)
4. Factor x^2−x−6
−2x(x−3)(x+2)
If you were asked to solve a system of linear equations using the substitution method, in what form would one or both of the equations start as that would make the problem the simplest?
Select one:
Answer:
It'd be easist if one of the variables was by itself
Step-by-step explanation:
I.E: y=2x+4 and 2y+x=23
A photograph measures 10 in. wide by 18 in. long. The picture is reduced so that the length is 6 in.
What is the new width?
a: 13 in
b: 313 in
c: 1045 in
d: 30 in
explain your answer please
Answer:
Step-by-step explanation:
The length has been reduced to 6 inches from 18 inches.
That means the length has been reduced to 6/18 = 1/3 of its original size.
So the width must be reduced to 1/3 * 10 which is roughly 3.333 inches.
It doesn't look like any of them are right. i don't know how to make it right from the answers given.