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valentina_108 [34]

3 years ago

7

You spend $24 on school supplies. You purchase pencils for $1 each and pens for $2 each. You purchase a total of 20 pens and pen

cils. How many pencils did you purchase? How many pens did you purchase?

1 answer:

Phantasy [73]3 years ago

7 0

You purchased 4 pens and 16 pencils.

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Use the image below to answer the following question. What relationship do the

Ivan

Answer:

A. Ratios are both identical

Step-by-step explanation:

sin x = 3/5

cos y = 3/5

hope it helps

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3 years ago

Christopher is going to use a computer at an internet cafe. The cafe charges

ArbitrLikvidat [17]

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1 7.20

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Step-by-step explanation:

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3 years ago

What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?

inn [45]

Hello :
y = 3x²+9x
= 3(x² + 3x )
= 3 ( x² +2(3/2)x +(3/2)²) -(3/2)²)
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<span>the x-coordinate of the vertex is : - 3/2</span>

8 0

3 years ago

Read 2 more answers

A bottling company produces bottles that hold 12 ounces of liquid. Periodically, the company gets complaints that their bottles

MA_775_DIABLO [31]

Answer:

$t=\frac{11.7-12}{\frac{0.2}{\sqrt{25}}}=-7.5$

Step-by-step explanation:

Information given

$\bar X=11.7$ represent the sample mean of amount of liquid

$s=0.2$ represent the standard deviation

$n=25$ sample size

$\mu_o =12$ represent the value that we want to check

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

System of hypothesis

We want to verify if the true mean for the amount of liquid is lower than 12 ounces, and the hypothesis are given by:

Null hypothesis: $\mu \geq 12$

Alternative hypothesis: $\mu < 12$

The statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing we got:

$t=\frac{11.7-12}{\frac{0.2}{\sqrt{25}}}=-7.5$

4 0

4 years ago

How can i solve this one 5 - x = 12

Troyanec [42]

You can find the solution for x by subtracting 5 from 12 which is -17. 5 added to 17 would be -12 so x = -17.

8 0

3 years ago

Read 2 more answers