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2 years ago

How would you compare the inequality?

Mathematics

1 answer:

Volgvan2 years ago

4 0

<h3>Answer: Choice A</h3>

-425 < 212

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Explanation:

Draw a horizontal number line with negative numbers on the left, and positive on the right. Therefore, -425 is to the left of 212. In turn this means -425 is smaller than 212

Alternatively, draw a vertical number line. Think of 0 as the ground, positive numbers above ground, and negative numbers below ground. With 212 higher than -425, we know that 212 is larger than -425; i.e. -425 is smaller than 212

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Please show work, thanks

Brut [27]

Answer:

4) 1400 $in^3$

5) 304 $\Pi$ or 954.56 $yd^3$

6) 315 $ft^2$

Step-by-step explanation:

$4)$

$V = \frac{lwh}{3} = \frac{20*20*10.5}{3} = \frac{4200}{3} = 1400$

$5)$

$A = \Pi(\frac{D}{2})^2 = \Pi(\frac{8}{2})^2 = \Pi*4^2 = 16\Pi$

$V = A * h = 16\Pi * 19 = 304\Pi = 304 * 3.14 = 954.56$

$6)$

$h^2 = 8^2 + 8^2 => h^2 = 64 + 64 = 128 => h =\sqrt{128}$

$A_1 = 2(\frac{8*\sqrt{128}}{2}) = 8*\sqrt{128} = 32 = 90.5$

$A_2 = 2(14 * 8) = 2*112 = 224$

$A = A_1 + A_2 = 91 + 224 = 315$

6 0

3 years ago

Explain two ways you could solve 20=5(-3+x)

ehidna [41]

I only know this way sorry

20=5 (-3+x)
20=-15+5x
+15. +15
_________
35=5x
__ __
5. 5
7=x

6 0

3 years ago

An egg is dropped from a height of 36 feet. The quadratic equation d = -t² + 36 provides the distance, d, of the egg, after t se

scoundrel [369]

Answer:

The egg hits the ground after 6 seconds.

Step-by-step explanation:

Given that an egg dropped from a height of 36 feet, this means the egg was 36 feet away from the ground.

The distance is given as

d = -t² + 36

The egg hits the ground when the distance, d, from the ground is zero.

That is when

-t² + 36 = 0

t² = 36

Taking square roots of both sides

t = ±√36

t = ±6

Since we are dealing with distance, we take the positive value.

So, t = 6 seconds

5 0

3 years ago

Evaluate the expression 15x + 4 for x = −1 1/2 (20 points + Brainliest for right answer)

SpyIntel [72]

Answer:

11/-30 Hope this helped :)

Step-by-step explanation:

15x + 4 = -1 1/2

15x = -5 1/2

x = 11/-2*1/15

x = - 11/-30

7 0

3 years ago

What is 13.253 as a mixed number<br>sorry to ask again but this is very important

Vika [28.1K]

Answer:

13 253/1000

Step-by-step explanation:

To convert 13.253 to a fraction first write it like this:

13.253/1

As we have 3 digits after the decimal point in the numerator, we need to multiply both the numerator and denominator by 10^3= 1000, so that there is no decimal point in the numerator.

13.253 x 1000 / 1 x 1000 = 13253/1000

As the numerator is greater than the denominator, we have an improper fraction, so we can also express 13.253 as a mixed number, thus 13253/1000 is equal to:

13 253/1000

6 0

3 years ago