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Lemur [1.5K]
3 years ago
9

4(1 - x) + 3x = - 2(x + 1)

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
6 0

Answer:

x=-2

Step-by-step explanation:

4 - 4x + 3x=-2x -2

4 -1x=-2x -2

4= -1x -2

2=-1x

x=-2

liubo4ka [24]3 years ago
4 0

Answer:

X=-6

Step-by-step explanation:

4(1−x)+3x=−2(x+1)

(4)(1)+(4)(−x)+3x=(−2)(x)+(−2)(1)(Distribute)

4+−4x+3x=−2x+−2

(−4x+3x)+(4)=−2x−2(Combine Like Terms)

−x+4=−2x−2

−x+4=−2x−2

Step 2: Add 2x to both sides.

−x+4+2x=−2x−2+2x

x+4=−2

Step 3: Subtract 4 from both sides.

x+4−4=−2−4

x=−6

Answer:

x=−6

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liberstina [14]

Answer:

I'm unsure, I've seen questions like this before but not this one

3 0
3 years ago
Last Friday, Erica earned $51 babysitting for 6 hours. At this rate, how many hours would Erica need to babysit in order to earn
zepelin [54]

Answer: 32 hours

Step-by-step explanation: 51/6 = 8.5

So, Erica makes 8.5 dollars per hour. 272/8.5 = 32. Thus, Erica will need 32 hours.

Brainliest?

3 0
3 years ago
Will give brainliest
White raven [17]

Answer:

45 sq. cm.

Step-by-step explanation:

2.5*12 =30

2*6/2=6

3*6/2=9

30+6+9=45

4 0
3 years ago
In a random sample of 40 refrigerators, the mean repair cost was $150. Assume the population standard deviation is $15.50. Const
Mama L [17]

Answer:  ($143.69, $156.31)

Step-by-step explanation:

Confidence interval to estimate  population mean :

\overline{x}\ \pm z\dfrac{\sigma}{\sqrt{n}}

, where \sigma = population standard deviation

n= sample size

\overline{x}= Sample mean

z= critical value.

As per given,

n= 40

\sigma = $15.50

\overline{x}= $150

Critical value for 99% confidence level = 2.576

Then, 99% confidence interval for the population mean:

150\pm(2.576)\dfrac{15.50}{\sqrt{40}}\\\\\Rightarrow\ 150\pm6.31  \ \ (approx)\\\\\Rightarrow(150-6.31,150+6.31)=(143.69,156.31)

Hence, the required confidence interval : ($143.69, $156.31)

6 0
4 years ago
X= r-h/y<br> solve for h and r
malfutka [58]
X = r - h/y ; Solve for h & r

Let's first solve for h :)

Add h/y to both sides.

h/y + x = r

So, r = h/y + x 

Now, let's solve for h.

x = r-h/y

Subtract r from both sides.

-r + x = -h/y

Multiply both sides by y.

y(-r + x) = y(-h/y)

Simplify.

-ry + xy = -h

Divide both sides by -1.

ry - xy = h

So, h = ry - xy

~Hope I helped!~
3 0
3 years ago
Read 2 more answers
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