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3 years ago

7/15 divided by 3/10

Mathematics

1 answer:

Yuliya22 [10]3 years ago

5 0

Answer:

i think thats my answer

Step-by-step explanation:

1 5/8

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Rich measured the height of a desk to be 80.7 cm. The actual height of the desk is 80 cm. What is Rich's percent error in this c

Hitman42 [59]

Answer:

0.9%

Step-by-step explanation:

We have been given that Rich measured the height of a desk to be 80.7 cm. The actual height of the desk is 80 cm.

We will use percentage error formula to solve our given problem.

$\text{Percentage error}=\frac{\text{Experimental value-Actual value }}{\text{Actual actual}}\times 100$

$\text{Percentage error}=\frac{80.7-80}{80}\times 100$

$\text{Percentage error}=\frac{0.7}{80}\times 100$

$\text{Percentage error}=0.00875\times 100$

$\text{Percentage error}=0.875\approx 0.9$

Therefore, Rich's percent error in calculation is 0.9%.

5 0

3 years ago

Which of the following could be the number of real roots, including any repeated roots, of a quadratic polynomial with real coef

scoray [572]

I think the only answer here is 0
Idk tho

5 0

2 years ago

Find the distance between each pair of points <br>L(-7,0) ,Y(5,9)

Sedbober [7]

Answer: The distance is 15

Step-by-step explanation:

To find the distance between L and Y find the difference in the x and y coordinates then square them and add them to find their square root.

-7-5= -12

0-9 = -9

12^2 + 9^2 = d^2 where d is the distance

144 + 81 = d^2

225 = d^2

d= $\sqrt{225}$

d= 15

3 0

2 years ago

The measures of two angles of a triangle are 23 degrees,and 67 degrees.is the triangle acute,right,or obtuse?

Margaret [11]

Trick question — it’s a right triangle. Here’s why:
23 + 67 = 90. All triangles have an interior angle sum of 180. 180 - 90 = 90. 90 degrees is right, and therefore, having a right angle, this is a right triangle.

7 0

2 years ago

Please help, thank you.

AlekseyPX

We need the radius to find the surface area. Since we have the circumference we can use that to find the radius.

C = 2πr
23 = 2(3.14)r
23 = 6.28r
23/6.28 = r
3.66 = r

Now use the radius to find the surface area.

SA = 4πr²
SA = 4(3.14)(3.66)²
SA = 168.33

Surface area is C. 168 cm²

Hope this helps :)

8 0

3 years ago