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3 years ago

If two shapes are similar they have _________________ corresponding angles?

Mathematics

1 answer:

AlexFokin [52]3 years ago

6 0

Proportional? I think that is the answer.

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after walking 15 mins zacharys treadmill displayed 120 calories burned, at this rate how many calories can zach burn in 65 mins

Monica [59]

Step-by-step explanation:

520 calories

15 mins = 120 calories

65 mins = 65/15 × 120

= 520 calories

3 0

3 years ago

Find product of 3/8 × 4

Korvikt [17]

Answer:

1 and 1/2 or 1.5

Step-by-step explanation:

3/8 × 4/1 = 3/2 = 1 and 1/2

Result in decimals: 1.5

Calculation steps:

3/8 × 4/1 = (3 × 4)/(8 × 1) = 12/8

12 ÷ 4 = 3

8 ÷ 4 = 2

= 3/2 = 1 and 1/2

3 0

3 years ago

Whats the x value of -5x - 4y=10

leva [86]

Here is the working and the answer

8 0

3 years ago

OBC is a sector of a circle with centre o and radius 9cm work out the area of the shaded region as a percentage of the area of s

NARA [144]

Answer:

83.7 %

Step-by-step explanation:

To get the area of the shaded region, we will following these steps.

Step one: Get the area of the sector of the circle.

The area of the sector of the circle can be obtained using the formula:

$Area = \frac{\theta}{360}\times \pi r^{2}$

Theta will be 60 degrees because triangle OAD is an equilateral triangle

Hence, $Area = \frac{60}{360}\times \pi \times 9^{2}= 42.42cm^{2}$

Step Two: Get the area of the equilateral triangle

The area of the equilateral triangle can be got using the formula

$Area = \frac{1}{2} Base \times Height$

The height of the triangle can be got by drawing an imaginary line bisecting the triangle into two parts and applying the Pythagoras' theorem to any of the resulting right-angled triangles formed.

This will be $height =\sqrt{4^{2}-2^{2}} =3.46cm$

Thus $Area = \frac{1}{2}\times 4\times 3.46=6.93cm^{2}$

Step Three: Subtract the area of the triangle from the area of the sector

Area of the shaded portion = $42.42cm^{2}-6.93cm^{2}=35.49cm^{2}$

Step Four: Divide the area of the shaded portion by the area of the entire shape and multiply the result by 100:

Expressing the ratio of the two areas as a percentage, we have

$\frac{35.49}{42.42} \times 100\approx 83.7 %$ %

7 0

3 years ago

A large-sample 95 percent confidence interval for the proportion of credit card customers that have reported fraudulent charges

Elden [556K]

Answer:

Step-by-step explanation:

Point estimate is always at the center of the interval.

You can find it by averaging the endpoints:

p(hat) = (0.028 + 0.086)/2 = 0.057

8 0

4 years ago