MATHEMATICS HIGH SCHOOL

-3(4x+2)=18 WHAT IS IT????

Answers

Answer 1
Answer:

Answer:

x = -2

Step-by-step explanation:

-3(4x + 2) = 18

Divide by -3:

-3(4x + 2) / -3 = 18 / -3

4x + 2 = -6

Subtract 2:

4x + 2 - 2 = -6 - 2

4x = -8

Divide by 4:

4x / 4 = -8 / 4

x = -2

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Answers

Answer:

20 x 80 = 160

15 x 105 = 1,575

HELP NEEDED, GIVING BRAINLIEST!!Which of the following are the vertices of the image of the figure below under the translation (x , y) ---> (x + 4, y - 2)? SELECT ALL THAT APPLY

A. (- 1, 2)
B. (- 9, 6)
C. (- 2, 7)
D. (6, 3)
E. (1, - 4)
F. (- 7, 0)

Answers

Answer:

d b f

Step-by-step explanation:

A rectangular field has an area of 1,764 m2. The width of the field is 13 m more than the length. What is the perimeter of the field?

Answers

Answer:

170.

Step-by-step explanation:

We have that A = W*L where A= Area, W= width, L=length and that W = 13+L. So,

A = (13+L)*L

1764 = 13L +  L^2

L^2 + 13L - 1764 = 0.

We use the general formula in the image where a=1, b=13 and c= -1764.

L1= \frac{-13+\sqrt[2]{169-4*(-1764)} }{2}

L1= \frac{-13+\sqrt[2]{7225} }{2}

L1= (-13+85)/(2)

L1= 36.

L2= \frac{-13-\sqrt[2]{169-4*(-1764)} }{2}

L2= (-13-85)/(2), this result will be negative and the problem is about length so it doesn't apply for this problem. We use L1= 36.

Then, L=36, W = 13 + 36 = 49. Therefore, the perimeter is 2L+2W = 72+98=170.
Hello,
Here in France we call length the greater side of a rectangle.
So:
Let a the greater side
b the shortest

a=b+13
a*b=1764
==>b*(b+13)=1764
==>b²+13b-1764=0
==>b=(-13-85)/2 to exclude
or (b=(-13+85)/2=36 and a=36+13=49)

P=2(a+b)=2(36+49)=170 (m)
Proof:
49-36=13
36*49=1764


Two fourth is _____________ pieces of the whole

Answers

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200 books ; 75% decrease

Answers

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.75*200=150

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Answers

A- 30 divided by 2 plus 1

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