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3 years ago

On her pogo stick Lila made 24 hops in 30 seconds. At this rate, how many hops will she make in 50 seconds?

Mathematics

1 answer:

alex41 [277]3 years ago

4 0

40 hops in 50 seconds

24/30 = x/50

cross multiplication

30x=24x50

30x=1200

x=40

24/30=0.8 40/50=0.8

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Billy drove 1 half of the 7.5 miles between his house and the mall. How many miles did he drive?

lara31 [8.8K]

Billy drove 3.75 miles. You find the answer by dividing 7.5 by 2

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3 years ago

Chad gets an annual salary of 25,000. He and his family spend 3500 per year on food. What percent of his salary is spent on food

Advocard [28]

Answer:

$\frac{x}{100}$ x 25000 = 3500

$x$ x 250 = 3500

x = 3500/250

x = 350/25

x = 14%

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3 years ago

I need help with this and fast if possible

11Alexandr11 [23.1K]

Answer:

<em>The answer is Hence Proved</em>

Step-by-step explanation:

Given that CB║ED , CB ≅ ED

To prove Δ CBF ≅ Δ EDF

CB ≅ ED ( Given )

This means that the length of CB is equal to ED

As CB║ED The following conditions satisfies when a transversal cut

two parallel lines

∠ EDF = ∠ FBC ( Alternate interior points )
∠ DEF = ∠ FCB ( Alternate interior points )

∴ Δ CBF ≅ Δ EDF ( By ASA criterion)

The Δ CBF is congruent to Δ EDF By ASA criterion .

<em> Hence proved </em>

6 0

3 years ago

The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a

horrorfan [7]

Answer:

$3.8465 *10^7$ square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula $SA=4\pi r^2$ . Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

$SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000$

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. $3.8465 *10^7$

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2 years ago

Kelly drew a circle with a diameter of 8cm Paige drew a circle with a radius of 3cm approximately how much larger is the area of

nlexa [21]

Answer:

15.7

Step-by-step explanation:

d = 2r

d = 8 thus r = 4

area (kelly) = 4 x4 x $\pi$ = 16 $\pi$

area (paige) = 3 x 3 x $\pi$ = 9 $\pi$

difference = 16 $\pi$ - 9 $\pi$ = 5 $\pi$ = 15.7

8 0

3 years ago