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yan [13]
4 years ago
12

What is the value of n in the equation (n – 4) – 3 = 3 – (2n + 3)?

Mathematics
1 answer:
SVETLANKA909090 [29]4 years ago
4 0
N= -7; open the first bracket, then add the two negatives.Then open the second bracket,  and cancel opposite sign 3's and then solve.
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Can you evaluate the expressions for the given value. (show steps if you can)
exis [7]

Answer:

Q1. -45

Q2. -10

Q3. 31?

Step-by-step explanation:

Q1 -- you times -8 and 2 which comes out to -16. Since you have -16 + 1 inside of the parentheses you add 1 to -16 which comes out to -15. Then you take -15 times 3 and it comes out to -45.

Q2 -- the m gets replaced by the 5 so now its -2 times 5. Which comes out to -10. Then you take -10 times 2, which is -20. Now take -20 + 10 which gives us the answer of -10.

Q3 -- I'm not completely sure on this one but I think the equation would transfer to this 2*5 + 5*3 + 2*3. So 2*5 is 10, 5*3 is 15, and 2*3 is 6. Add them all together and you get 31.

I hope this was right and it helps you!

6 0
3 years ago
The sum of three numbers is 855. One of the numbers, x, is 50% more than the sum of the other two numbers. What is the value of
Snowcat [4.5K]

Answer:

The value of x = 513

Step-by-step explanation:

Let x, y, and z be the three numbers

Given

x+y+z=855

Assuming x be the number which is 50% more than the sum of the other two numbers.

i.e.

(150)% of (y+z) = 1.5(y+z)

                y + z = x/1.5

As we know that

x + y + z = 855

substituting y + z = x / 1.5 in the equation

x+\frac{x}{1.5}=855

Multiply both sides by 1.5

x\cdot \:1.5+\frac{x}{1.5}\cdot \:1.5=855\cdot \:1.5

1.5x+x=1282.5

2.5x=1282.5

Divide both sides by 2.5

\frac{2.5x}{2.5}=\frac{1282.5}{2.5}

x = 513

Therefore, the value of x = 513

8 0
3 years ago
Find the area of a right triangle with a<br>height of 8 1/2 feet and a base of 15 feet,​
slamgirl [31]

Answer:

The area is 63.75 feet square

Step-by-step explanation:

Formula for area of a triangle is 1/2 × base × height

And we are given each of this variables in the question above

Therefore you just have to input those values to the formula

1/2×17/2×15

255/4

=63.75

Therefore the area of the triangle is 63.75 feet square

5 0
3 years ago
I don't know how to calculate these can someone tell me step by step?
fgiga [73]
Just use the protractor tool
6 0
3 years ago
What is the absolute value of -12 -32 and -40 negatives
Jet001 [13]

Answer:

-12 = | 12|

-32 = | 32|

-40 = |40|

6 0
3 years ago
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