3 years ago

How do you solve -9-(-12)-17-4

Mathematics

1 answer:

Nata [24]3 years ago

7 0

Answer:

-18

Step-by-step explanation:

First for 9 and 12 there are two negitive signs so it turns positive so you get -9+12-17-4 so you add -9 and 12 which is 3 so you now have 3-17-4 so subtract 17 from 3 to get -14 so your equasion will look like this -14-4 and that equals -18

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Find two numbers whosse sum is 12 and whose difference is 4

Brrunno [24]

X + y = 12
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From the second equation we can see that x = 4 + y

We can plug this into the first one and get:

4 + y + y = 12
4 + 2y = 12
2y = 12-4
2y = 8
y = 4

And then we can plug that into “x” and get that x = 4 + 4, or x=8

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4 years ago

The next model of a sports car will cost 5.8% more than the current model the current model cost 31,000 how much will the price

iren2701 [21]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

20 is what percent of 50?

djverab [1.8K]

We can rephrase the question as "What percent of 50 is 20?".
"What percent ..." is an unknown. We'll use the variable x to represent this unknown.

The word 'of' in mathematics can mean 'multiply'. Likewise the word 'is' can mean 'equal'.

Now we have the phrase "20 equals to x times 50".

Or in an equation: 20 = x * 50

Solve for x.

20 = x * 50
$\frac{20}{50}$ = x <-- Divide both sides by 50

Simplify the fraction.

$\frac{20}{50} = \frac{2}{5}$

Convert the fraction into a decimal.

$\frac{2}{5}$ = 0.4

Convert the decimal into a percent.

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So, 40% is the answer.

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