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3 years ago

Write a story about temperatures that this expression could represent: 27 + (-11)

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

7 0

Answer:

at noon the temperature was 27 degrees. At night, the sun went down and the temperature decreased by 11 degrees.

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Which number is between 7.17 x 10^4 and 8.17 x 10^5

xxTIMURxx [149]

Answer:

71701,71702, 71703 etc

Step-by-step explanation:

Given :

$7.17$ × $10^{4}$ and 8.17× $10^{5}$

Now

$7.17$ × $10^{4}$ =71700 and

8.17× $10^{5}$ =817000

There are so many numbers between 71700 and 817000

Like: 71701,71702, 71703 etc

8 0

3 years ago

4 less than half a number is equal to 2 more than the number

xxMikexx [17]

Answer:

$-12$

Step-by-step explanation:

Let that number be $x$ . We can build an equation, and solve for $x$ .

$4$ less than half of $x$ is $x/2-4$ .

$2$ more than $x$ is $x+2$ .

We are given that the two quantities are equal, so we have that $x/2-4=x+2$ .

Adding $4$ to both sides gives $x/2=x+6$ .

Multiplying both sides by $2$ gives $x=2(x+6)=2x+12$ .

Subtracting $2x$ from both sides gives $-x=12$ .

Multiplying both sides by $-1$ gives $x=-12$ .

So, the number is $\boxed{-12}$ and we're done!

The check is left as an exercise to the reader.

3 0

3 years ago

Please find the value of x please

marin [14]

Answer is 7

Step by step explanation

3x+159=180
3x=180-159=21
x=7

5 0

2 years ago

Please help, the subject is math

Sonja [21]

Answer: D

Step-by-step explanation:

6 0

3 years ago

Simplify. -4 + 12 + (-9) *<br><br> PLEASE HELP REEEE

timama [110]

Step-by-step explanation:

= -4 + 12 + (-9)

= -4 + 12 - 9

= -4 + 3

= -1

6 0

3 years ago