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2 years ago

PLEASE ANSWER ASAP! I NEED HELP ON IT

Mathematics

1 answer:

IRINA_888 [86]2 years ago

6 0

Answer:

amhere

Step-by-step explanation:

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Convert into percentages 7/25

LekaFEV [45]

Answer:

28%

Step-by-step explanation:

Divide the numerator by the denominator in order to convert this fraction into a decimal.

7/25 = 0.28

Multiply the decimal by 100 to convert into a whole number.

.28 * 100 = 28

7/25 converted into a percent is 28%.

8 0

2 years ago

Geometry question, any help is appreciated

kodGreya [7K]

Answer:

Hence, the ratios are given by 5:7, 25:49, 125:343.

Step-by-step explanation:

We are given two spheres such that:

Volume of small sphere $V_{s}$ = 250 $yd^{3}$

Volume of large sphere $V_{l}$ = 686 $yd^{3}$ .

Then the ratio of volume = 250 : 686 = 125 : 343.

Since, the volume of a sphere = $\frac{4 \pi \times r^{3}}{3}$ , this gives us that the ratio of the radius = ∛ $V_{s}$ : ∛ $V_{l}$

i.e. The ratio of the radius = ∛125 : ∛343 = 5 : 7.

Further, as the surface area of a sphere = $4 \pi \times r^{2}$ , this gives us that the ratioof surface area = $r_{s} ^{2}$ : $r_{l} ^{2}$

i.e The ratio of the surface area = $5^{2}$ : $7^{2}$ = 25 : 49

So, the ratio of the surface areas = 25 : 49.

Hence, the ratios are given by 5:7, 25:49, 125:343.

4 0

2 years ago

Read 2 more answers

Simplify 5(x + 3) - 9x+4. O A. 14x+7 O B.-4x+19 O C. 14x+19 D. -4x+7

Julli [10]

Answer:

Step-by-step explanation:

distribute

5x+15-9x+4

combine like terms

-4x+19

8 0

2 years ago

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When I solved this equation I got x=0.5

qwelly [4]

You might have made an error the first time you solved for x. I got x = -0.5.

When you have your log base 4, the way you cancel that out is by making 4 the base on both sides, so you get 4^(log4) to reduce to 1, and you're left with:

2x + 3 = 4^(1/2) ... Simplify

2x + 3 = 2

2x = -1

x = -1/2

If you plug that back in, everything checks out. Maybe double check your use of logarithm/exponent properties?

4 0

2 years ago

Given that f(x) = 2x2 − 96, find x.

NISA [10]

F(x)=2x(2)−96

Step 1: Add -4x to both sides.

xf+ −4x = 4x−96+ −4x

xf −4x= −96

Step 2: Factor out variable x.

x(f−4)= −96

Step 3: Divide both sides by f-4.

x(f−4)/ f−4 = −96/ f−4

x= −96/f−4

Answer:

x= −96/ f−4

3 0

3 years ago

Read 2 more answers