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3 years ago

Hannah does push-ups in sets of 3. she did 10 sets of push-ups today. then her coach asked her to do 15 more push-ups.

Mathematics

1 answer:

inn [45]3 years ago

8 0

Answer:

Step-by-step explanation:

10 sets × (3 pushups)/set = 30 pushups

She did a total of 30+15 = 45 pushups

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The diameter of Jupiter is 88,732 miles. The 8 in the ten thousands place is how many times greater than the 8 in the thousands

pshichka [43]

1000 times greater than that

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3 years ago

X+2y=2 I don't get how to get y by itself

Ksivusya [100]

You have to divide so it would be

X+2/2 = y do you see what I did so then it would be
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3 years ago

Suppose that the area between a pair of concentric circles is 49pi. Find the length of a chord in the larger circle that is tang

Lapatulllka [165]

Answer:

14 units

Step-by-step explanation:

We are given that the area between two concentric circles is $49\pi$

We have to find the length of chord in the larger circle that is tangent to the smaller circle.

Let $r_1,r_2$ be the radius of two circles.

$r_1$ be the radius of small circle and $r_2$ be the radius of large circle

We know that area pf circle= $\pi r^2$

Area of large circle = $\pi r^2_2$

Area of small circle = $\pi r^2_1$

Area between two circles = $49\pi$

Area of large circle -Area of small circle= $49\pi$

$\pi r^2_2-\pi r^2_1=49\pi$

$\pi(r^2_2-r^2_1)=49$

By pythagorus theorem

$AD^2=OA^2-OD^2$

$AD^2=r^2_2-r^2_1$

$AD=49$

$AD=\sqrt{49}=7$

Length of chord= $2\cdot AD$

Hence, the length of chord of the larger circle = $2\cdot7=14$ units

7 0

3 years ago

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Jenny spent 35 minutes doing research.she finished at 7:10 P.M. At what time did she start her research?

-Dominant- [34]

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3 years ago

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KATRIN_1 [288]

Answer:

Step-by-step explanation:

5(2-y)+y=-6
10-5y+y= -6
10-4y= -6
4y=10+6
4y=16
y=16/4
y=4

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3 years ago

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