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2 years ago

Consider the system of equations. 20 POINTS NEED HELP ASAP

Mathematics

1 answer:

Alex2 years ago

3 0

- 5x - 1 = 2x + 6

- 7x = 7

7x = -7

x = -1

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Plz answer I will mark u brainiest!!!!!

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Answer:

Step-by-step explanation:

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2 years ago

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Simplify the expression 4p−5(p+6) Please help, thank you :)

ankoles [38]

Answer:

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Step-by-step explanation:

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3 years ago

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If isme estimated that there are 50 students in the seventh grade class but there are actually 40 what is isme’s percent error?

Temka [501]

The percent error is 25 %

Solution:

Given that it is estimated that there are 50 students in the seventh grade class, but there are actually 40

To find: percent error

Percent error is the difference between a measured and known value, divided by the known value, multiplied by 100%

The formula for percent error is given as:

$\text{ percent error }=\frac{\text { approximate value }-\text {exact value}}{\text { exact value }} \times 100$$

Here, exact value = 40 and approximate value or estimated value = 50

Substituting the values in above formula,

$\begin{aligned}&\text { percent error }=\frac{50-40}{40} \times 100\\\\&\text { percent error }=\frac{10}{40} \times 100=\frac{100}{4}=25\end{aligned}$

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3 years ago

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Assoli18 [71]

....... shouldn't that be a question instead of an answer? Well, I guess it is what it is, and I understand it thx anyways. (=^\/^=)

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