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astraxan [27]
3 years ago
10

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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