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2 years ago

Is 4 hours worked for $12; 7 hours worked for $28 and equivalent rate or a ratio?

Mathematics

2 answers:

disa [49]2 years ago

7 0

The answer to that math question is 3:4

Bond [772]2 years ago

6 0

Answer:

3:4

Step-by-step explanation:

4x=12

x=3

7y=28

y=4

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Please explain the answer. Thank you!

denis-greek [22]

Answer:

Neither

Step-by-step explanation:

Neither because sometimes as x increases, y increases and sometimes as x increases, y decreases so this graph have no corrleation so it neither.

6 0

2 years ago

Which expression was factored completely using the GCF, if the original expression was

Lerok [7]

Answer:

4x(x+2)

Step-by-step explanation:

4 0

3 years ago

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Renee hiked for 8 and 3/4 miles. After resting, Renee hiked back along the same route for 7 and 1/4 miles. How many more miles d

mart [117]

The answer is 3/2. you do this by subtracting 7 1/4 from the 8 3/4 and simplifying the 6/4!

6 0

2 years ago

If x+a is a factor of 2x²+2ax+5x+10,find a.

vazorg [7]

If $x+a$ is a factor of the polynomial, it means that $-a$ is a root of the polynomial.

In fact, if a polynomial $p(x)$ has a root $x_0$ (i.e. $p(x_0)=0$ ), then the polynomial is divisible by $(x-x_0)$

In your case, you know that the polynomial is divisible by $(x+a)=(x-(-a))$ , so $-a$ is a solution.

Let's evaluate $p(-a)$ and set it to zero:

$2(-a)^2+2a(-a)+5(-a)+10 = 0 \iff 2a^2-2a^2-5a+10=0 \iff -5a+10 = 0 \iff a = 2$

We can check the answer: if $a=2$ the polynomial becomes

$2x^2+2(2)x+5x+10 = 2x^2+9x+10$

And we're claiming that $-a=-2$ is a root of this polynomial:

$2(-2)^2+9(-2)+10 = 2\cdot 4 - 18 + 10 = 0$

5 0

2 years ago

Please help 10 FREE POINTS!!!!

Maurinko [17]

Answer:

364.5

Step-by-step explanation:

you would need a calculator for it, unless you can do exponential math at such a degree... if you're using a PC there's a good graphing calculator at Desmos.com, it can show you how a graph looks, which shows that when n is 7, the answer is 364.5. also it wouldn't be 1093.5 because the exponent is n-1 which means that while n could be 7, you need to take away 1 before using it as an exponent.

7 0

2 years ago

Read 2 more answers