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3 years ago

Someone please help me with this question please!!

Mathematics

1 answer:

loris [4]3 years ago

4 0

I’m pretty sure the correct answer is C 42

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Tell whether the equation −2x + 4y = 5 represents a direct variation. If so, identify the constant of variation.

PtichkaEL [24]

The equation of a direct variation is of the form
$y = mx$
But the given function can be rewritten as

$y = \frac{1}{2} x + \frac{5}{4}$
This is a partial variation,
$\frac{1}{2}$
is the constant of variation and

$\frac{5}{4}$
is the fixed constant.

5 0

3 years ago

Read 2 more answers

Write the following phrase as an algebraic expression.<br><br>A number divided by 14

Vikentia [17]

Answer:

x÷14

Step-by-step explanation:

easy dude easy this needs to be 20 characters long

3 0

3 years ago

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HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP

Sindrei [870]

The answer is a i’m pretty sure, if i’m incorrect then i’m sorry but i’m sure that it’s a :)

6 0

3 years ago

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Answer numbers 1-4 with work please

aleksley [76]

Answer:

$\large\boxed{Q1.\ 6\dfrac{1}{4}\ cups}\\\boxed{Q2.\ 3\dfrac{1}{3}\ pounds}\\\boxed{Q3.\ 72:64=9:8}\\\boxed{Q4.\ 32:64=12:24}$

Step-by-step explanation:

In Q1 and Q2 we must make the proportion.

$Q1.\\s-\text{number of cups of sugar}\\\\\dfrac{2\frac{1}{2}}{\frac{2}{5}}=\dfrac{s}{1}\to s=2\dfrac{1}{2}:\dfrac{2}{5}=\dfrac{2\cdot2+1}{2}\cdot\dfrac{5}{2}=\dfrac{5}{2}\cdot\dfrac{5}{2}=\dfrac{25}{4}=6\dfrac{1}{4}$

$Q2.\\p-\text{number of pounds of mashed potatoes}\\\\\dfrac{2\frac{4}{6}}{\frac{4}{5}}=\dfrac{p}{1}\to p=2\dfrac{4}{6}:\dfrac{4}{5}=\dfrac{2\cdot6+4}{6}\cdot\dfrac{5}{4}=\dfrac{16\!\!\!\!\!\diagup^4}{6}\cdot\dfrac{5}{4\!\!\!\!\diagup_1}=\dfrac{20}{6}=\dfrac{20:2}{6:2}=\dfrac{10}{3}=3\dfrac{1}{3}$

$Q3.\\\\72:64=\dfrac{72}{64}=\dfrac{72:8}{64:8}=\dfrac{9}{8}=9:8\\\\\text{Other method}\\\\72:64=9:x\to\dfrac{72}{64}=\dfrac{9}{x}\qquad\text{cross multiply}\\\\72x=(64)(9)\qquad\text{divide both sides by 72}\\\\x=\dfrac{576}{72}\\\\x=8$

$Q4.\\\\32:x=12:24\\\\\dfrac{32}{x}=\dfrac{12}{24}\qquad\text{cross multiply}\\\\12x=(32)(24)\qquad\text{divide both sides by 12}\\\\x=\dfrac{768}{12}\\\\x=64$

5 0

3 years ago

Mae Ling earns a weekly salary of $335 plus a 8.0% commission on sales at a gift shop. How much would she make in a work week if

Olegator [25]

Answer:

$695

Step-by-step explanation:

Her salary can be shown through the following linear equation

salary=.08x+335

Where x is the amount of sales

To find her salary if she sells 4500 worth of merchandise you just simply need to plug 4500 in for x this means that

salary=.08*4500+335

I get $695

5 0

3 years ago

Someone please help me with this question please!! ​

Someone please help me with this question please!!