Please answer please please answer need the answer

Answers

Answer 1

Answer: A = 1/2 bh
A = 1/2 (21)(8)
A = 1/2 (168)
A = 84

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The cost of a jacket increased from $75.00 to $87.75. What is the percentage increase of the cost of the jacket?
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Solve each system using substitution.3x+2y=231/2x-4=y

Which equation has solution x = -3?A) 2x -7 = -1
B) 3x+ 8 =1
C)1/2x+8=10
D)1/2(2x-6)=-6

Answers

A)2x -7 = -1
2x=-1+7
2x=8
x=4

B)3x+ 8 =1
3x=1+8
3x=9
x=3

C) 1/2x+8=10
1/2x=10-8
1/2x=2
x=1

D)
$(1)/(2) (2x-6)=-6 \n \n (2x)/(2) - (6)/(2)=-6 \n \n (2x)/(2) - (6)/(2)=-12 \n \n 2x-6=-12 \n \n 2x=-12+6 \n \n 2x=-6 \n \n \boxed{x=-3}$

What happens when an object accelerates ?

Answers

When an object start to accelerates it changes its state of motion.

Solve for f please. c=5/9 (f-32) show work thank u (:

Answers

C = 5/9(F - 32)

Multiply each side by 9/5 : 9/5 C = F - 32

Add 32 to each side: 9/5 C + 32 = F

c=5/9 (f-32)
c = 5/9f-160/9 /*9
9c=5f-160
5f-160=9c
5f=9c+160 /: 5
f = (9c+160)/5

-(2m-7)-(3+4(m+4)) Solve PLZZZZ HURRYY 20 POINTS

Answers

Answer:

-6m-12

Step-by-step explanation:

-(2m-7)-(3+4(m+4)) =

-2m+7-(3+4m+16)=

-2m+7-(19+4m)

-2m+7-19-4m

-6m-12

OR:

-m-2 ( if you divide by 6 as a common factor)

The line passes through the points (x1, y1) and (x2, y2). The slope of the line is: a) x2−x1y2−y1 b) y2−y1x2−x1 c) x1−x2y1−y2 d) y1−y2x1−x2

Answers

Answer:

Step-by-step explanation:

the slope m of a line passing through (x₁, y₁ ) and (x₂, y₂ ) is

m = $\frac{y_{2-y_(1) } }{x_(2)-x_(1) }$ ← slope formula

A family wants to have 4 children. Design and do a simulation to determine the probability that, if they do have 4 children, they will have two boys and two girls. (Hint: Use coins.)

Answers

Let B represent boy and G represent girl, Then sample space

BBBB, BBBG, BBGB, BGBB, GBBB, BBGG, BGBG, GBBG, BGGB, GBGB, GGBB, BGGG, GBGG, GGBG, GGGB, GGGG

Two boys and two girls appeared in 6 situations.

Therefore, P(6 boys and 6 girls) = 6/16 = 3/8

Answer:

Using B as the boy and G as the girl, sample space

GGBB, BGGG, GBGG, GGBG, GGGB, GGGG, BBBB, BBBG, BBGB, BGBB, GBBB, BBGG, BGBG, GBBG, BGGB, GBGB, GGGG

Six different scenarios featured two boys and two girls.

P(6 boys and 6 girls) = 6/16 = 3/8 as a result.

Step-by-step explanation:

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