Answers
he hiked 4 km east in 45 minutes
45 minutes = 3/4 of an hour
4 /.75 = 5.33
so the answer would be D. 5.3 km per hour east
Related Questions
Which expression is equivalent to square root of 9x^2?
Answers
√(9x^2)
To make this easier, let's use the following property of roots.
√(ab) = √(a) * √(b)
Let's separate the square root into two different square roots.
√(9x^2)
= √(9) * √(x^2)
Now, let's solve for each square root individually.
√(9) = 3
√(x^2) = x
Now, combine them
3 * x = 3x
3x is your answer.
Have an awesome day! :)
You can think of 3*3*x*x as 3x*3x which is (3x)^2.
Now we can take the square root of (3x)^2 (which equals 9x^2).
√(3x)^2
The √ and the ^2 cancel out so you are left with 3x.
So, √9x^2 = √(3x)^2 = 3x.
3x is your answer!
What is the value of x in the equation 2x + 3y = 36, when y = 6
Answers
2x+3y=36
y=6
2x +3(6) = 36
2x +18 =36
2x = 18
x = 9
Answer:
The value of the provide expression is 9.
Step-by-step explanation:
Consider the provided expression.
[tex]2x + 3y = 36 [/tex]
We need to find the value of the expression, for x when y=6
Substitute the respective values in the provided expression.
[tex]2x + 3(6) = 36 [/tex]
[tex]2x + 18 = 36 [/tex]
[tex]2x= 36-18 [/tex]
[tex]2x= 18 [/tex]
[tex]x= 9 [/tex]
Hence, the value of the provide expression is 9.
Jessie is completing a mental rotation experiment. her reaction time will be fastest when the objects are rotated: 120 degrees. 180 degrees. 240 degrees. 60 degrees.
Answers
Look at the following expression.
5(3x + 2)
Which of the answer choices below is NOT an equivalent expression?
A.15x + 10
B.10x + 15
C.5 ∙ 3x + 5 ∙ 2
D.5(2 + 3x)
Answers
write an equation of the line, in slope intercept form, that passes through the given point and has the given slope. point:(8,-8), slope:3
Answers
-8 = 3(8) + b
Multiply 8 and 3.
-8 = 24 + b
Subtract 24 from both sides to isolate b.
-32 = b
Your equation would look like this:
y = 3x - 32
What does the end behavior look like of the graph of the function f(x)=-8x^4-2x^3+x?
I know what the graph itself looks like but I have trouble explain its end behavior.
Thank you.
Answers
The coefficient is -8 which is a minus. In this case, the f(x) will become minus:
The result would be:
when X go the left end(X= -∞), the f(x) will become minus (f(x)→−∞)
f(x)→−∞, as x→−∞
when X go the right end(X= +∞), the f(x) will become minus (f(x)→−∞)
f(x)→−∞, as x→+∞
using radicals, write an expression for the expression y 1/2
Answers
7x=2x-35
A. 7
B.5
C.-5
D.-7
Answers
substract both side by 2x
5x=-35
divide both side by 5
x=-7
->D
What are the solutions to the inequality? Graph the solutions. x/5 greater than or equal to -2
Answers
">" is the greater than sign, and ">" means it is greater than or equal to since it is underlined. All you have to do now is put the inequality into slope-intercept form (y = mx + b) and plot the line on a graph.
In this inequality, -2 is y and x/5 is x. Just rearrange the terms while still keeping the answer the same.
x/5 > -2
-2 < x/5 Notice that the sign changed to "less than or equal to." This is because x/5 is still greater than or equal to -2, which makes -2 less than or equal to x/5.
Since it is "or equal to," we can discover what x could be by multiplying -2 by 5, which is -10. So the non-dotted line goes over the point -10 on the x-axis, straightly vertical without a slope, and everything that is greater than -10 is shaded, which is everything on the right side of the line. It should look like the attachment below.
A site titled "www.desmos.com/calculator" might help you in the future. I hope my explanation made sense!
Determine which equations below, when combined with the equation 3x-4y=2, will form a system with no solutions. Choose all that apply.
A) 2y = 1.5x - 2
B) 2y = 1.5x - 1
C) 3x + 4y = 2
D) -4y + 3x = -2
Answers
y = mx + b
where m is slope and b is the y-intercept.
Given: 3x - 4y = 2
Slope-intercept: y = 3x/4 - 1/2
A. 2y = 1.5x - 2
Slope-intercept: y = 3x/4 - 1
B. 2y = 1.5x - 1
Slope-intercept: y = 3x/4 - 1/2
C. 3x + 4y = 2
Slope-intercept: y = -3x/4 + 1/2
D. -4y + 3x = -2
Slope-intercept: y = 3x/4 + 1/2
Hence, the answers to this item are A and D.
Answer: D,B,B,C,D,A,C,B,D, (A-D)
ALL TEST ANSWERS
Step-by-step explanation:
Describe the cross section
Answers
Answer:
D. Square
Step-by-step explanation:
A cross section is the shape that we get when we cut the object.
Here the given object is a cube.
It is cut straight through the middle.
Imagine a cube cut through the middle, when we look at the same on the top, we get square.
Since in a cube all the sides are equal.
Therefore, we get square when we cut the cube straight through the middle.
Answer: D. Square.
The cross-section of the shape in the image is a square.
Here's why:
The shape in the image is a cube.
A cube has six square faces.
When you cut a cube through the middle along any of its axes, the resulting cross-section will always be a square.
Therefore, the answer is D. square.
PLEASE HELP I NEED TO GET THIS CORRECT.
Answers
The correct answer for number 2 is B: b - 8
Correct answer for number 3 is C: The quotation of three and some number times five
For number 4 the correct answer is C: 10x + 5
Sarah said that 0.00001 is bigger than 0.001 because the first number has more digits to the right of the decimal point. Is Sarah correct? Explain your thinking using negative powers of 10 and the number line
Answers
The number 0.001 is greater than the number 0.00001. She is incorrect.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
Sarah said that 0.00001 is bigger than 0.001 because the first number has more digits to the right of the decimal point. She is incorrect.
0.001 > 0.00001
Because the number 0.001 is greater than the number 0.00001.
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It is a week before the maths festival. A maths exhibitor costs £75.40 and so far 12 have been bought.
Answers
A survey was taken on pet ownership. 750 people were covered on the first day of the survey. The number tripled every subsequent day. Find the total number of people surveyed in 6 days
A. 265100
B. 265200
C. 273000
D. 265700
Answers
day two: 750 * 3 = 2250
day three: 2250 * 3 = 6750
day four: 6750 * 3 = 20250
day five: 20250 * 3 = 60750
day six: 60750 * 3 = 182250
add it all together: 750 + 2250 + 6750 + 20250 + 60750 + 182250 = 273000
The answer is C, 273000.
To find the total number of people surveyed in 6 days with numbers tripling each day starting with 750, we calculate the number for each day and sum them up, giving a total of 273000 people surveyed.
To calculate the total number of people surveyed in 6 days if 750 people were covered on the first day and the number tripled every subsequent day. We will use an exponential growth formula to find the answer.
On Day 1: 750 people.
On Day 2: 750 × 3 = 2250 people.
On Day 3: 2250 × 3 = 6750 people.
On Day 4: 6750 × 3 = 20250 people.
On Day 5: 20250 × 3 = 60750 people.
On Day 6: 60750 × 3 = 182250 people.
To find the total number of people surveyed over the 6 days, we add up the total number of people surveyed each day:
750 + 2250 + 6750 + 20250 + 60750 + 182250 = 273000 people.
Therefore, the correct answer is C. 273000.
There are 20 girls on the basketball team. of these, 17 are over 16 years old, 12 are taller than 170 cm, and 9 are both older than 16 and taller than 170 cm. how many of the girls are older than 16 or taller than 170 cm?
Answers
Final answer:
By using the principle of inclusion-exclusion, we calculate that all 20 girls on the basketball team are either over 16 years old or taller than 170 cm, as the sum of the individual criteria minus the intersection equals the total number of girls on the team.
Explanation:
To determine how many of the girls on the basketball team are either over 16 years old or taller than 170 cm, we can use the principle of inclusion-exclusion. According to the information provided, there are 20 girls on the team in total, of which 17 are over 16 years old, 12 are taller than 170 cm, and 9 satisfy both criteria. The principle of inclusion-exclusion states that the number of elements in the union of two sets is equal to the sum of the sizes of each set minus the size of their intersection.
Using this principle:
Number of girls over 16 years old: 17
Number of girls taller than 170 cm: 12
Number of girls who are both over 16 and taller than 170 cm: 9
The calculation would be as follows:
17 (over 16) + 12 (taller than 170 cm) - 9 (both) = 20
Therefore, there are 20 girls on the team who are either older than 16 or taller than 170 cm.
the set of ____ contains all the whole numbers amd their opposite
Answers
The set of integers contains all the whole numbers and their opposite!
Hope this helps! :)
Hope this helps! :)
Elliott purchased shares of Microsoft in 2008 for $28 per share. He plans to sell them as soon as the price rises 20%. At what price will he sell his shares?
Answers
Since we are to find the price when it is risen 20%, therefore the fractional increase must be 0.20 of the original, therefore:
amount increased = $28 * 0.20 = $5.60
So the selling price must be:
selling price = $28 + $5.60 = $33.60
Final answer:
Elliott will sell his Microsoft shares at a price of $33.60 each after a 20% price increase from his initial purchase price of $28 per share.
Explanation:
The question concerns the calculation of a future selling price of shares after a certain percentage increase. To find the selling price after a 20% increase on Elliott's initial purchase price of $28 per share, we first calculate the 20% increase, which is 0.20 × $28 = $5.60. Next, we add this increase to the original purchase price to determine the selling price: $28 + $5.60 = $33.60 per share. Therefore, Elliott plans to sell his shares when their price reaches $33.60 each.
Write the fraction 29 over 7 as a repeating decimal
Answers
Graph f(x)=34x+2. Use the line tool and select two points to graph the line.
Answers
we have
[tex]f(x)=\frac{3}{4}x+2[/tex]
To graph the linear equation find the intercepts
we know that
The x-intercept is the value of x when the value of the function is equal to zero
The y-intercept is the value of the function when the value of x is equal to zero
so
Find the y-intercept
for [tex]x=0[/tex]
[tex]f(x)=\frac{3}{4}*0+2=2[/tex]
the y-intercept is the point [tex](0,2)[/tex]
Find the x-intercept
for [tex]f(x)=0[/tex]
[tex]0=\frac{3}{4}x+2[/tex]
Multiply by [tex]4[/tex] both sides
[tex]0=3x+8[/tex]
[tex]x=-\frac{8}{3}=-2.667[/tex]
the x-intercept is the point [tex](-2.667,0)[/tex]
Plot the intercepts to graph the line
The answer in the attached figure
Answer:
the answer is (-2,0) and (0, 2)
Good luck!
ΔABC with vertices A(-3, 0), B(-2, 3), C(-1, 1) is rotated 180° clockwise about the origin. It is then reflected across the line y = -x. What are the coordinates of the vertices of the image?
Answers
Answer:
A(0, -3) ; B(3, -2) and C(1, -1).
Step-by-step explanation:
Given : ΔABC with vertices A(-3, 0), B(-2, 3), C(-1, 1) is rotated 180° clockwise about the origin.
To find : What are the coordinates of the vertices of the image.
Solution : We have given
Vertices A(-3, 0), B(-2, 3), C(-1, 1) is rotated 180° clockwise.
By the rotation rule of 180° clockwise : (x ,y) →→ ( -x ,-y).
Then vertices would be
A(-3, 0) →→ A(3, 0)
B(-2, 3) →→ B(2, -3)
C(-1, 1) →→ C(1, -1).
Reflection y = -x then
A(0, -3) ; B(3, -2) and C(-1, 1).
Therefore, A(0, -3) ; B(3, -2) and C(1, -1).
Of 60 students, 24 students have a pet. What is the ratio of students with pets to students without pets?
Answers
Hope this helps
the ratio of students with pets to without pets is 24:36
or simplified: 2:3
hope this helps
Dimitri deposited 60% of his paycheck into a savings account be deposited $41.67 what was the total of his check
Answers
1.17 - 0.07a + (-3.92a)
Answers
Combine Like Terms:
1.17+(-0.07a)+(-3.92a)
(-0.07a+ -3.92a) +1.17
-3.99a + 1.17
Answer: -3.99a + 1.17
I hope this helps!
Answer:
The simplified form of the given expression is [tex]1.17-3.99a[/tex].
Step-by-step explanation:
The given expression is
[tex]1.17-0.07a+(-3.92a)[/tex]
The given expression can be written as
[tex]1.17-0.07a-3.92a[/tex]
Now, combine the like terms.
[tex]1.17+(-0.07a-3.92a)[/tex]
[tex]1.17+(-3.99a)[/tex]
[tex]1.17-3.99a[/tex]
Therefore the simplified form of the given expression is [tex]1.17-3.99a[/tex].
1. Write the expression in simplified radical form. Show your work. 3 – 2√11/ 2 +√11
Answers
you mean (3-2√11)/(2+√11) I guess
(3-2√11)(2-√11)/(2+√11)(2-√11)
(28-7√11)/(-7)
therefore the answer is √11-4
[tex] \sqrt{11} - 4[/tex]
EXPLANATION
The given radical expression is
[tex] \frac{3 - 2 \sqrt{11} }{2 + \sqrt{11} } [/tex]
We rationalize the radical expression by multiplying both the numerator and denominator by the conjugate of
[tex]2 + \sqrt{11} [/tex]
which is
[tex]2 - \sqrt{11} [/tex]
This will give us,
[tex] \frac{3 - 2 \sqrt{11} }{2 + \sqrt{11} } \times \frac{2 - \sqrt{11} }{2 - \sqrt{11} } [/tex]
[tex] \frac{(3 - 2 \sqrt{11})(2 - \sqrt{11} ) }{(2 + \sqrt{11})(2 - \sqrt{11} ) }[/tex]
We expand the numerator and also apply difference of two squares to the denominator.
[tex] \frac{6 - 3 \sqrt{11} - 4 \sqrt{11} + 2(11)}{ {2}^{2} - { (\sqrt{11} )}^{2} } [/tex]
This simplifies to,
[tex] \frac{6- 3\sqrt{11} - 4 \sqrt{11} + 22}{ 4- 11} [/tex]
[tex] \frac{28- 7 \sqrt{11} }{ - 7} [/tex]
We now share the denominator for the numerators to obtain,
[tex] - \frac{28}{7} + \frac{7 \sqrt{11} }{7} [/tex]
This finally gives,
[tex] - 4 + \sqrt{11} = \sqrt{11} - 4[/tex]
Jade wants to buy a $200,000 term life insurance policy. She is 34 years old. Using the premium table, what is her annual premium for a 10 year policy?
Answers
The premium of $200,00 term life insurance policy is $1,202
What is Annual premium?Annualized premium is the total amount paid in a year's time to keep the life insurance policy in force. The annualized premium amount of a life insurance policy does not include taxes and rider premiums.
Given, Jade wants to buy a $200,000 term life insurance policy. She is 34 years old.
Jade wants to buy a $200,000 term life insurance policy. She is 34 years old.
Since, Jade is female.
Using table for 10-year policy: We will see the column of female.
Annual premium of life insurance per $1000 for 10-years policy term of 34-years old female = $6.01
For $1000 life insurance premium = $6.01
For $1 life insurance premium = $0.00601
For $20000 life insurance premium = 200000 x 0.00601
For $20000 life insurance premium = $ 1,202
Therefore, The premium of $200,00 term life insurance policy is $1,202
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The number of CDs sold has decreased each year. The graph shows the number of CDs sold in a given year. (coordinate graph) Which is a reasonable inference for the number of CDs at month 4?
Answers
The equation ax=0 has only the solution x=0 because
Answers
A checkers board is 8 squares long and 8 squares wide. The area of each square is 14 square centimeters. Estimate the perimeter of the checkers board to the nearest tenth of a centimeter.
Answers
Area of each square = 14 sq. cm.
length of each square = sqrt(14) = 3.7 cm
length of one side = 8 x 3.7 = 29.6 cm
Perimeter of the checker board = 4 x 29.6 = 118.4 cm
The perimeter of the checker board 118.4 cm
Area of each square = 14 sq. cm.
What is the length?
The square root of area is the length of one side
[tex]length of each square =\sqrt{14} = 3.7 cm[/tex]
[tex]length of one side = 8 * 3.7 = 29.6 cm[/tex]
What is the formula for perimeter of square?Perimeter (P) =4 (length of side a)
[tex]P=4a[/tex]
[tex]Perimeter of the checker board = 4 *29.6 = 118.4 cm[/tex]
Therefor we get the perimeter of the checker board 118.4 cm
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Compute the requested average. Tim Worker receives the following income monthly from a second job. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. $200 $150 $250 $260 $285 $380 $200 $225 $200 $250 $220 $150 In dollars and cents the average pay will be?
Answers
200 + 150 + 250 + 260 + 285 + 380 + 200 + 225 + 200 + 250 + 220 + 150 = 2770
2770 divided by 12 =230.83 is the average