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Neko [114]
3 years ago
10

5(x + y)-3(x-y)= Help please

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:

2x and 8y

Step-by-step explanation:

Distribute:

5*x=5x

5*y=5y

-3*x=-3x

-3*-y=3y

Combine:

5x+-3x= 2x

5y+3y= 8y

Hope this helps!!!

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(2-7m^6)^2<br><br><br> i dont know this
Pavel [41]
(2-7m^6)^2

rearrange terms:

(2-7m^6)^2

(-7m^6 + 2)^2

expand the squares:

(-7m^6 + 2)^2

(-7m^6 + 2)(-7m^6 + 2)

distribute:

(-7m^6 + 2)(-7m^6 + 2)

-7(-7m^6 + 2) • m^6 + 2(-7m^6 + 2)

distribute:

-7(-7m^6 + 2) • m^6 + 2(-7m^6 + 2)

49m^12 - 14m^6 + 2(-7^6 +2)

distribute:

49m^12 - 14m^6 + 2(-7^6 +2)

49m^12 - 14m^6 - 14m^6 + 4

combine like terms:

49m^12 - 14m^6 - 14m^6 + 4

49m^12 - 28m^6 + 4

solution:

49m^12 - 28m^6 + 4



please mark brainliest and hope it helps
7 0
3 years ago
A light bulb has a lifetime X that is exponentially distributed with a mean 340 hours. Find the probability that the bulb lifeti
LUCKY_DIMON [66]

Answer:

0.7026

Step-by-step explanation:

Let X denote the lifetime of light bulb. Given X \sim Exp(\lambda) where the mean is E(X) = 340 =\frac{1}{\lambda} \implies \lambda = \frac{1}{340} = 0.00294.

Recall that,

\displaystyle P(X>x) = 1 - \int_0^x e^{-\lambda x} = 1 - (1 - e^{-\lambda x} = e^{-\lambda x}

\displaystyle P(X>220 | X>100) = \frac{P(X>220,X>100)}{P(X>100)} = \frac{e^{-\lambda \times 220}}{e^{-\lambda \times 100}} = \frac{0.5236}{0.7452} = 0.7026

7 0
3 years ago
What are the signs of the coordinates of a point in each of the four quadrants
guajiro [1.7K]
On the Cartesian plane in two dimensions, the quadrants are <span>I (+,+), II (−,+), III (−,−), and IV (+,−). The numbering, starting in the upper right corner, goes counter-clockwise.</span>

6 0
3 years ago
90 men can complete a work in 24 days working 8 hrs a day. how many men are required to complete the same work in 18 days workin
JulsSmile [24]

Answer:

128 men

Step-by-step explanation:

90 × 28 × 8 = M × 18 × 15/2

M = 128

7 0
3 years ago
Is (-1,2) a solution of the graphed system if inequalities ​
Zigmanuir [339]

Yes (I guess)

(-1, 2) Lies on a line so im guessing it is...

7 0
3 years ago
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