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IgorLugansk [536]
3 years ago
13

Evaluate 6x for each value of x 10. X=-2

Mathematics
2 answers:
Andreas93 [3]3 years ago
8 0
If x is -2 you just replace with 6(-2) which means you multiply both numbers giving you a final answer of -12
sineoko [7]3 years ago
7 0
If x is -2 you just replace 6x with 6(-2) which means you multiply both numbers giving you a final answer of -12 because a positive number multiplied by a negative number is a negative number.
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The two rectangles shown have equal areas. Find the value of x
Tema [17]

Answer:

x=18

Step-by-step explanation:

We need to find the areas of the rectangles

1st rectangle

A= l*w

A = (2x+4)*9

   = 18x+36



2nd rectangle

A = l*w

   = 15*(3x-30)

    = 45x-450


Since the area of the rectangles are equal, we set these two equations equal

18x+36 = 45x-450

Subtract 18x from each side

18x-18x+36 = 45x-18x-450

36 = 27x-450

Add 450 to each side

36+450 =27x

486 = 27x

Divide by 27 on each side

486/27 = 27x/27

18=x


7 0
2 years ago
Maria solved the equation 34=x+19. Although her final answer was correct, she could have found it in a simpler way. how could sh
mamaluj [8]

Answer:

She could have subtracted 19 from both sides. Hope this helps :)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
jami can now mow 1/6 acre in 8 minutes. if her rate is constant, can jami mow 1 and 1/2 acres in one hour? explain ur reasoning.
Jlenok [28]
We have that
 1 1/2 acres-------------> 1.5 acres
one hour----------------> 60 minutes

Step 1
I proceed to make a rule of three
<span>if Jami can now mow 1/6 acre -----------------------> in 8 minutes
1.5 acres----------------------------------------------> X
X=1.5*8/(1/6)=72 minutes

72 minutes > 60 minutes

therefore
</span><span>Jami can not mow 1 1/2 acres in an hour
</span><span>The time required by jami to mow 1 1/2 acres is 72 minutes</span><span>
</span>
3 0
3 years ago
Can I get help please?
MArishka [77]
I’m pretty sure you just start solving for x like
x2 + 4 = x - 1
so on and so on
7 0
2 years ago
Your favorite local college football team, the UCF Knights, won 35 of out 39 games over a period of 4 years. If they keep their
Basile [38]

Answer:

They will win 70 games

Step-by-step explanation:

if for 39 games they won 35 of them,

for 78 they will win X

39*X= 78* 35

39X= 2730

X= 70

6 0
3 years ago
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