Hello There!
We know that the painter had the steamer from 9 a.m in the morning to 4 p.m in the afternoon
he had it for a total of 7 hours. 28.84 divided by 7 equals 4.12 an hour
Divide $28.84 by 7 hours.
28.84/7 = 4.12
The rental cost per hour was $4.12.
What is the slop of the line containing the points (4,-10 2/3), (-3,1)
let's firstly convert the mixed fraction to improper fraction.
[tex]\bf \stackrel{mixed}{10\frac{2}{3}}\implies \cfrac{10\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{32}{3}} \\\\[-0.35em] ~\dotfill\\\\ (\stackrel{x_1}{4}~,~\stackrel{y_1}{-\frac{32}{3}})\qquad (\stackrel{x_2}{-3}~,~\stackrel{y_2}{1}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{1-\left( -\frac{32}{3} \right)}{-3-4}\implies \cfrac{1+\frac{32}{3}}{-7}\implies \cfrac{\frac{3+32}{3}}{-7}[/tex]
[tex]\bf \cfrac{~~\frac{35}{3}~~}{\frac{-7}{1}} \implies \cfrac{\stackrel{5}{~~\begin{matrix} 35 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}}~~}{3}\cdot \cfrac{1}{~~\begin{matrix} -7 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\implies -\cfrac{5}{3}[/tex]
What’s 18/100 in simplest form
Answer:
9/50
Step-by-step explanation:
18/100
Divide the top and bottom by 2
9/50
This is in simplest form
Determine the domain of the function.
f(x)= sqrt of 7+x
Answer:
Df=[-7,∞)
Step-by-step explanation:
Answer:
x∈R {x ≥ -7}
Step-by-step explanation:
The domain of the function can only include real numbers. This means whatever happens under the square root sign (i.e. the radicand) cannot be less than 0 (since you can't take the square root of a negative number).
To find the domain, set the radicand ≥ 0:
7 + x ≥ 0
x ≥ -7
A taxi company charges passengers $1.75 for a ride, no matter how long the ride is, and an additional $0.40 for each mile traveled. The rulec
= 0.40m + 1.75 describes the relationship between the number of miles m and the total cost of the ride c.
a. What is the charge for a 1-mile ride?
b. What is the charge for a 2.7-mile ride?
A. $2.15; $2.83
B. $0.40; $5.13
C. $1.75; $2.15
D. $0.40; $1.08
Answer:
A
Step-by-step explanation:
For a 1 mile ride, plug in 1 into m.
Total = 0.40(1) + 1.75
= 0.40+1.75 = 2.15.
Because no other answer but A has 2.15, you're answer is A
Answer:A
Step-by-step explanation:
What is the value of x:
2 + x = 8
A cash register contains 10$ bills and 20$ bills total value of 340 if there are 23 bills total then how many of each does the register contains
Answer:
There are 12 bills of 10$ and 11 bills of 20$
Step-by-step explanation:
Let
x ------> number of 10$ bills
y -----> number of 20$ bills
we know that
x+y=23 -----> x=23-y -----> equation A
10x+20y=340 ----> equation B
substitute equation A in equation B and solve for y
10(23-y)+20y=340
230-10y+20y=340
10y=340-230
y=110/10=11
Find the value of x
x=23-y ----> x=23-11=12
therefore
There are 12 bills of 10$ and 11 bills of 20$
Length of shawdow of building 32m. The distance from the top to the tip of the shadow is 38m . find the height of the building
Answer:
20.49 feet to the nearest hundredth.
Step-by-step explanation:
Using the Pythagoras Theorem:
38^2 = h^2 + 32^2
h^2 = 38^2 - 32^2
h^2 = 420
h = √420
h = 20.494 m.
Your question asks to find the height of the building.
Answer: 20.49 metersTo find the answer to your question, we would need to use the Pythagorean theorem.
Pythagorean Theorem: [tex]a^2+b^2=c^2[/tex]
What we would do is plug in the numbers that we already know into the equation, and then we simply solve.
We would plug 32 to a and plug 38 into c
Your equation should look like this:
[tex]32^2+b^2=38^2[/tex]
Now, we solve:
[tex]32^2+b^2=38^2\\\\1024+b^2=38^2\\\\1024+b^2=1444\\\\b^2=420\\\\\sqrt{b} =\sqrt{420} \\\\b=20.493[/tex]
We would jkust round to the nearest hundredths place, therefore giving you the answer of 20.49.
This means that the height of the building would be 20.49 meters
20.49 meters would be your FINAL answer.
I hope this helps!Best regards, MasterInvestorFind the value of y and
simplify completely.
y =
?
Answer:
y=9.01
Step-by-step explanation:
In this question you apply the Pythagoras Theorem to generate relationships which will enable you to form equations and solve for the unknown.
The Pythagoras Theorem states that when you have a right-angle triangle and squares are made at each of the three sides, the sum of squares of the two small sides will equal the square of the longest side.
It is expressed as a²+b²=c² where;
a and b are the shortest sides of the triangle, where b is the heightc is the longest side of the triangle/hypotenuseIn the question we can use three triangles to form expressions using this theorem
First triangle
That one with a height of y, short side of 3 and hypotenuse of zThe relationship you can form is;
[tex]3^2+y^2=z^2\\9+y^2=z^2\\y^2=z^2-9------------------------(1)[/tex]
In this equation you make y² the subject of the formula
Second Triangle
The second triangle is that with a base of 27 as the (a), a height of y as the (b) and the hypotenuse of x as the (c)Hence the relationship you can form is
[tex]27^2+y^2=x^2\\729+y^2=x^2\\y^2=x^2-729[/tex]
In this equation you make y² the subject of the formula
Third Triangle
The third triangle is that one with a base of z as (a) , x as (b) which is the height and 30(3+27) as the (c) which is the hypotenuseThe relationship you can form is;
[tex]z^2+x^2=30^2\\x^2=30^2-z^2---------------------(3)[/tex]
Here x² is the subject of the formula
Equations
[tex]y^2=z^2-9\\y^2=x^2-729\\x^2=900-z^2[/tex]
Substitute equation 3 in equation 2
[tex]y^2=x^2-729-------------2\\\\x^2=900-z^2-------------3\\\\y^2=900-z^2-729\\\\y^2=171-z^2---------------4[/tex]
Substitute equation 4 in equation 1
[tex]y^2=171-z^2---------------4\\\\y^2=z^2-9------------1\\\\z^2-9=171-z^2\\\\2z^2=171+9\\\\z^2=180\\\\z=\sqrt{180} \\\\z=9.487\\\\z=9.5[/tex]
Use the value of z in equation 1 to get value of y
[tex]z^2-3^2=y^2\\\\9.5^2-9=y^2\\\\90.25-9=y^2\\\\81.25=y^2\\\\\sqrt{81.25} =y\\\\y=9.01[/tex]
Which outcome is represented by X?
rolling a two and the coin landing on tails
rolling a three and the coin landing on tails
rolling a two and the coin landing on heads
rolling a three and the coin landing on heads
Answer:
A. rolling a two and landing on tails
Evaluate 12 X (1.4+8.59) writing your answer in its simplest form.
Step-by-step explanation:
1.4+8.59= 9.99
12 X 9.99 = 119.88
Which of the following equations is an example of inverse variation between
the variables x and y?
A. Y=x+5
B. Y=5x
C. Y=5/x
D. Y=x/5
[tex]\bf \qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad y=\cfrac{k}{x}\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ k=5\qquad \qquad y=\cfrac{5}{x}[/tex]
Answer:
C. Y=5/x
Step-by-step explanation:
Inverse variation is given by
xy = k where k is a constant
Divide each side by x
xy/x = k/x
y = k/x where k is a constant
Let k=5
y = 5/x is an equation that is inverse variation
What is the answer for 27^x=9^x-4
Answer:
x = -8
Step-by-step explanation:
We are given the following expression which we are to solve for [tex]x[/tex]:
[tex] 2 7 ^ x = 9 ^ { x - 4 } [/tex]
For this expression, we will make the bases same on both sides of the equation and then equate the exponents equal to each other.
[tex](3^3)^x = (3^2)^{x-4}[/tex]
Multiplying the exponents and equating them to get:
[tex] 3 x = 2 ( x - 4 ) [/tex]
[tex] 3 x = 2 x - 8 [/tex]
[tex] 3 x - 2 x = - 8 [/tex]
x = -8
For this case we must solve the following equation:
[tex]27 ^ x = 9 ^ {x-4}[/tex]
We rewrite:
[tex]27 = 3 * 3 * 3 = 3 ^ 3\\9 = 3 * 3 = 3 ^ 2[/tex]
So:
[tex]3^{3(x)}=3^{2(x-4)}[/tex]
Since the bases are the same, the two expressions are only equal if the exponents are also equal. So, we have:
[tex]3 (x) = 2 (x-4)\\3x = 2x-8[/tex]
Subtracting 2x on both sides:
[tex]3x-2x = -8\\x = -8[/tex]
Answer:
[tex]x = -8[/tex]
Solve 2x - 8 < 7.
{x | x < 1/2}
{x | x > 1/2}
{x | x < 15/2}
{x | x > 15/2}
The solution to the inequality is [tex]\( \{ x \,|\, x < \frac{15}{2} \} \),[/tex] indicating all real numbers less than [tex]\( \frac{15}{2} \).[/tex]
To solve the inequality [tex]\(2x - 8 < 7\)[/tex], we'll isolate x by adding 8 to both sides and then dividing both sides by 2.
Here's the step-by-step calculation:
Starting inequality:
[tex]\[ 2x - 8 < 7 \][/tex]
Add 8 to both sides:
[tex]\[ 2x - 8 + 8 < 7 + 8 \][/tex]
[tex]\[ 2x < 15 \][/tex]
Divide both sides by 2:
[tex]\[ \frac{2x}{2} < \frac{15}{2} \][/tex]
[tex]\[ x < \frac{15}{2} \][/tex]
So, the solution to the inequality is [tex]\(x < \frac{15}{2}\).[/tex]
Now, let's express the solution set in set-builder notation. The solution set for x consists of all real numbers less than [tex]\( \frac{15}{2} \)[/tex]. This can be written as:
[tex]\[ \{ x \,|\, x < \frac{15}{2} \} \][/tex]
So, the correct option is:
[tex]\[ \boxed{\{ x \,|\, x < \frac{15}{2} \}} \][/tex]
How do you do this problem
Can someone Help me please
Answer:
x<3
Step-by-step explanation:
The circle is open and the arrow is going left so its going to be less then. The circle is on 3 so the answer is c. x<3.
Analyze the diagram below and complete the instructions that follow.
A. 3/22
B. 3/7
C. 8/15
D.8/11
1. This question refers to conditional probability and is asking us to find the probability of Q occurring, given that R occurs. What this means is that we must divide the probability of Q and R occurring by the probability of R occurring (this is because we have the condition that R occurs). This may be written as such:
Pr(Q|R) = Pr(Q ∩ R) / Pr(R)
2. Now, the first step is to find Pr(Q ∩ R). This is given by the value in the centre of the Venn Diagram (ie. in the cross-over between the two circles) divided by the total of all the values:
Pr(Q ∩ R) = 3/(8 + 3 + 4 + 22)
= 3/37
3. The next step is to find Pr(R). This is given by the value in the circle denoted R (including the cross-over with Q) divided by the total of all the values.
Pr(R) = (4 + 3)/(8 + 3 + 4 + 22)
= 7/37
4. Thus, we can now subtitute the probabilities we defined in 2. and 3. into the formula for conditional probability we defined in 1.:
Pr(Q|R) = (3/37) / (7/37)
= 3/7
Thus, the answer is B.
Note that technically there is no need to write out the full probabilities before coming to this answer. The same exact answer could be found by using Pr(Q ∩ R) = 3 and Pr(R) = 7. This works because they are part of the same universal set - in other words, since the total of all the values in the Venn Diagram remains constant, the denominators of the two probabilities would be the same (given that no cancelling is done) and these denominators would be cancelled out when dividing Pr(Q ∩ R) by Pr(R). This can be particularly useful for a multiple choice question such as this one.
is 1 greater than 5/3
Answer: No
Step-by-step explanation: 5/3 is greater than 1 because 1 is the same as 3/3 and 5/3 is greater than 3/3 making 5/3 greater than 1.
Samuel consumed 2129 calories of food on Monday, 2348 calories on Tuesday, and 1863
calories on Wednesday. In order for Samuel's average calorie intake to equal a daily
average of 2200 calories, how many calories of food must he consume on Thursday?
Answer: 2460 calories
Step-by-step explanation:
2129 + 2348 + 1863 = 6340
2200 x 4 = 8800
8800 - 6340 = 2460
Final answer:
Samuel must consume 2460 calories on Thursday to achieve his target average daily calorie intake of 2200 over the four days.
Explanation:
To find out how many calories Samuel must consume on Thursday to have an average daily intake of 2200 calories, we first calculate the total number of calories he should have consumed over four days. This is done by multiplying the desired daily average (2200 calories) by the number of days (4), which equals 8800 calories.
Next, we add the calories Samuel consumed from Monday to Wednesday, which amounts to 2129 (Monday) + 2348 (Tuesday) + 1863 (Wednesday) = 6340 calories.
To find the calories for Thursday, we subtract the total consumed so far (6340 calories) from the desired four-day total (8800 calories). This gives us 8800 - 6340 = 2460 calories.
Therefore, Samuel must consume 2460 calories on Thursday to achieve an average of 2200 calories per day over the four days.
Factor the expression below.
x2 - 18x+81
O A. (x - 3)(x - 27)
O B. (x+9)(x+9)
O C. (x+3)(x+ 27)
O D. (x - 9)(x-9)
You must remember that a polynomial is written like so...
ax^2 + bx + c
In this case...
a = 1
b = -18
c = 81
To factor you must find two numbers who both add up to b (-18) AND multiply to c (81)
-9 + -9 = -18
-9 * -9 = 81
so...
D. (x - 9)(x - 9)
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:B (x+9)(x+9)
Step-by-step explanation: just did it and (x-9)(x-9) is the WRONg answer. the correct answer is B (x+9)(x+9)
A circle has an arc whose measure is 80° and whose length is 88π, What is the diameter of the circle?
Answer:396
Step-by-step explanation:Arc length = radius * angle in radians
you know radius = Diameter/2 = D/2
80 deg = (80pi/180) rad
then,
88 pi = (D/2) * (80 pi /180)
sloving for D
D = 396
The diameter of the circle which measures is 80° and length arc is 88π is 396
Length of arc formula
length of arc = ∅ / 360 × 2πr
where
r = radius
∅ = centre angle = 80°
length of arc = 80 / 360 ×2πr
length of arc = 88π
Therefore,
88π = 16 / 36 πr
cross multiply
88π × 36 = 16πr
3168π = 16πr
divide both sides by 16π
198 = r
Recall
diameter = 2(radius)
Therefore,
diameter of the circle = 2 × 198
diameter of the circle = 396
learn more on length of arc here: https://brainly.com/question/15373642
Lucinda wants to make $6.00 on every arrangement of flowers she sells. If it costs her $10.00 to prepare an
arrangement, by what percentage will she mark up the price?
a.60%
b.70%
c.59%
d.167%
Answer:60%
Step-by-step explanation:
Final answer:
Lucinda will mark up the price of her flower arrangements by 60% to make a $6.00 profit on each one, which costs her $10.00 to prepare. The correct answer is option a.
Explanation:
Lucinda wishes to make a profit of $6.00 on each flower arrangement she sells, on top of the $10.00 it costs her to prepare one. To calculate the percentage markup, we use the formula: Markup Percentage = (Profit / Cost) × 100%. In Lucinda's case, the profit is $6.00 and the cost is $10.00.
So, the calculation will look like this:
Markup Percentage = ($6.00 / $10.00) × 100% = 0.6 × 100% = 60%.
Therefore, Lucinda will mark up the price by 60% to achieve her desired profit. The correct answer to the question is option a.
A line passes through the given points. Write an equation for the line in
point-slope form. Then rewrite the equation in slope-intercept form.
(4, -2), (9, -8)
4-9=5
-2--8=6
y=mx+b
slope/mx=6/1
base/y intercept=5
Answer: The equation for the line in point-slope form :[tex] (y+2)=\dfrac{-6}{5}(x-4)[/tex]
The equation in slope-intercept form : [tex]y=\dfrac{-6}{5}x+\dfrac{14}{5}[/tex]
Step-by-step explanation:
The equation of a line in point slope form passing through points (a,b) and (c,d) is given by :-
[tex](y-b)=\dfrac{d-b}{c-a}(x-a)[/tex]
Now, the point slope form passing through points (4, -2) and (9, -8) is given by :-
[tex](y-(-2))=\dfrac{-8-(-2)}{9-4}(x-4)\\\\\Rightarrow (y+2)=\dfrac{-6}{5}(x-4)[/tex]
The equation for the line in point-slope form :[tex] (y+2)=\dfrac{-6}{5}(x-4)[/tex]
Further if we simplify the equation , we get
[tex] y+2=\dfrac{-6}{5}x+\dfrac{24}{5}\\\\\Rightarrow\ y=\dfrac{-6}{5}x+\dfrac{24}{5}-2\\\\\Rightarrow\ y=\dfrac{-6}{5}x+\dfrac{14}{5}[/tex]
The equation in slope-intercept form : [tex]y=\dfrac{-6}{5}x+\dfrac{14}{5}[/tex]
The graph below corresponds to the equation y=x2+bx+c, what are the values of b and c?
Answer:
C) B= -1 C= -2
Step-by-step explanation:
Dan spends 2/5 of his wages on rent and 1/2 on food. If he makes £540 per week, how much money does he have left?
Answer:
Dan has £54 left
Step-by-step explanation:
Dan's weekly wages are £540.
Then his spending includes (2/5)w + (5/10()w, or (9/10)w, and this is subtracted from Dan's wages: £540 - (expenses)
£540 - (9/10)(£540) = £54
Dan has £54 left after having spent 9/10 of his weekly wages on rent and food.
I’m stuck, please help ASAP. Will give brainliest!
Answer:
C) 35 Degrees
Step-by-step explanation:
To find the degree of an exterior angle, subtract the larger arc, DE, degree by the smaller arc, BC, and then divide by 2! Which is 35. 118-48/ 2 = 35.
Simplify -4 + (-3) + 6.
Answer:
-1
Step-by-step explanation:
-4 + -3 = -7
-7 + 6 = -1
-7 + 6 = -1 because when you are adding a positive and negative number you subtract and then add the sign of the bigger number.
what is the value of x, given that the two prisms are similar?
Answer:
The correct answer option is D. 60.
Step-by-step explanation:
We are given the diagram of two prisms with known side lengths other than x. Given that these prisms are similar, we are to find the value of x.
Considering the similarity of these prisms, we will use the ratio method to find x.
[tex] \frac { 3 } { 2 0 } = \frac { 9 } { x } [/tex]
[tex] x = \frac { 6 \times 2 0 } { 3 } [/tex]
x = 60
Answer: OPTION D
Step-by-step explanation:
Given the similar prisms shown in the image, the first step is to set up the following proportion, where "x" is the missing lenght:
[tex]\frac{9}{3}=\frac{x}{20}[/tex]
And finally you need to solve for the lenght "x" to find its value.
To solve for "x" you can multiply both sides of the equation by 20.
Then, the result is:
[tex](20)(\frac{9}{3})=(\frac{x}{20})(20)\\\\\frac{9*20}{3}=x\\\\\frac{180}{3}=x\\\\x=60[/tex]
Find the area of rectangle ABCD with vertices A(-4, 0), B(2, 2), C(3, -1), and D(-3, -3)
Answer:
18 square units.
Step-by-step explanation:
graph the square or find the difference then multiply the base by the hight.
Find the radius of K
Answer:
6 ft.
Step-by-step explanation:
solution :
360 degree = pie r².
1 degree =pie r²/360
50degree=5pie r²/36
5pie = 5 pie r²/36
r²=36
r=6
Therefore radius = 6 ft.
4⁄15 of the 315 members of a book club are male. How many female members are there in the club?