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Mrac [35]
3 years ago
13

(-1)[-3(-5)(-7)]+(-3+7)(-2)

Mathematics
2 answers:
posledela3 years ago
6 0
Simplify the expression.

Answer: 97
Sati [7]3 years ago
4 0

Using pemdas, we get:

(-1)[-3(-5)(-7)]+(-3+7)(-2) = (-1)(-105) + 4(-2) = 105 - 8 = 97

Hope that helps!

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The problem is in the picture​
Aleonysh [2.5K]

Answer:

27%

Step-by-step explanation:

In the row Students ages 14-17 and column skip breakfast, there are 24 students.
In row total and column total, there 90 students.

24/90 are students age 14-17 who skip breakfast

24/90 = 12/45 = 0.26666667

Percent = decimal x 100

Percent = 0.26666667 x 100 = 26.666667

26.666667 is rounded to 27%

Hope this helps :)

Have a nice day!

5 0
3 years ago
Read 2 more answers
2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a
Mariulka [41]

Answer:

0.225 \Omega =225 m\Omega

Step-by-step explanation:

We know (Ohm second law) that R= \frac{k}{d^2} where k inlcudes the rest of the parameters (material, lenght). In our situation we have k= 0.4\cdot9 \Omega mm^2. The moment the diameter becomes 8mm R becomes

R= {{0.4\cdot 9}\over{16}} \Omega = 0.225 \Omega

4 0
3 years ago
How is 2.25 written as a fraction
Salsk061 [2.6K]
2.25 as a fraction is 2 1/4
6 0
3 years ago
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Sandra walks two miles in 32 minutes, and she runs two miles in 24 minutes. Which of the following equations can be used to calc
Ludmilka [50]
I think it is 32 divided by 24=X
6 0
3 years ago
Factor Completely -5x^3 + 10x^2
Anit [1.1K]

Answer:

D

Step-by-step explanation:

Given

- 5x³ + 10x² ← factor out - 5x² from each term

= - 5x²(x - 2)  → D

6 0
3 years ago
Read 2 more answers
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