3 years ago

Need help with my words in vocab

Mathematics

1 answer:

Lerok [7]3 years ago

6 0

Okey. But how and where

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Four time a number r plus half a number s equals 12. Twice the number r plus one fourth of the numbers s equals 8. What are the

Snezhnost [94]

The system of equations have no solution.

Explanation:

The equations are $4r+\frac{1}{2}s=12$ and $2r+\frac{1}{4} s=8$

To find the two numbers, let us solve the equations using substitution method.

From the equation $2r+\frac{1}{4} s=8$ , let us determine the value of r,

$\begin{aligned} 2 r+\frac{1}{4} s &=8 \\ 2 r &=8-\frac{1}{4} s \\ r &=\frac{1}{2}\left(8-\frac{1}{4} s\right) \\ r &=4-\frac{1}{8} s \end{aligned}$

Let us substitute the value of r in $4r+\frac{1}{2}s=12$ , we get,

$\begin{aligned} 4\left(4-\frac{1}{8} s\right)+\frac{1}{2} s &=12 \\ 16-\frac{1}{2} s+\frac{1}{2} s &=12 \\ 16 &=12 \end{aligned}$

which is not possible.

This means that the system has no solution.

6 0

3 years ago

Is -100 rational or irational

pychu [463]

-100 is rational.

-100 can be turned into a fraction by doing the following...

Just put 1 underneath -100 and you get $\frac{-100}{1}$

So that means it is rational since it can be a fraction!

4 0

3 years ago

A TV has a listed price of $885.98 before tax. If the sales tax rate is 8.5%, find the total cost of the TV with sales tax

Butoxors [25]

Answer:

net amount $885.98 tax at 8.5% is $75.31 gross amount is $961.29

8 0

3 years ago

Please help! I’ll mark you as brainliest if correct!!!!

Morgarella [4.7K]

Answer:

.152

Step-by-step explanation:

only 14 but might be right

7 0

3 years ago

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Someone help me please

prisoha [69]

The answer is five at least i hope it is

5 0

3 years ago

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Need help with my words in vocab​

Need help with my words in vocab