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2 years ago

How am I supposed to do this? I WILL GIVE BRAINLEST!

Mathematics

1 answer:

jolli1 [7]2 years ago

5 0

Answer:

D. 28.

Step-by-step explanation:

<u>Students with 1 to 3 pairs of shoes:</u>

About 32. Just say 32.

<u>Students with 13 - 15 pairs of shoes:</u>

4. Just say 4.

<u>Solve 32 - 4:</u>

32 - 4
= 28.

<h2>28 is your answer.</h2>

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What is a number n is at least 4

beks73 [17]

That inequality can be written as n >= 4

The ">=" represents greater than or equal to. On paper you would just add a horizontal line under the ">" and not include the "="

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3 years ago

Which quadratic equation has roots –2 and 1/5?

AysviL [449]

Answer:

The equation $5x^2\:+\:9x\:-\:2\:=\:0$ has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

Step-by-step explanation:

Checking the equation

$5x^2\:+\:9x\:-\:2\:=\:0$

putting x = -2 in the equation

$5\left(-2\right)^2\:+\:9\left(-2\right)-\:2\:=\:0\:$

$2^2\cdot \:\:5-9\cdot \:\:2-2=0$

$2^2\cdot \:5-18-2=0$

$20-20=0$

$0=0$

L.H.S=R.H.S

putting x = 1/5 in the equation

$5\left(\frac{1}{5}\right)^2\:+\:9\left(\frac{1}{5}\right)-\:2\:=\:0\:$

$5\left(\frac{1}{5}\right)^2+9\cdot \:\frac{1}{5}-2=0$

$\frac{1}{5}+\frac{9}{5}-2=0$

$2-2=0$

$0=0$

L.H.S=R.H.S

As putting x = -2 and x = 1/5 satisfy the equation.

Therefore, the equation $5x^2\:+\:9x\:-\:2\:=\:0$ has roots –2 and 1/5.

Hence, the option 'a' is the correct answer.

4 0

3 years ago

Lynda is training for a half-marathon she ruined 3 3/4 miles on Monday 3 miles on Tuesday and two and a half miles on Wednesday

Shalnov [3]

3 3/4+3+2 2/4=9 1/4.

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3 years ago

What is 1 + 1???????????????????????????????????????????????????

choli [55]

Answer: 2

Have a good day ¯\_(ツ)_/¯

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3 years ago

Read 2 more answers

does the function represent exponential growth or exponential decay? identify the growth or decay factor. y=9*(1/2)^x

jonny [76]

Answer:

decay

Step-by-step explanation:

7 0

3 years ago