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3 years ago

28= 8 x + 12-7X Please solve

Mathematics

1 answer:

I am Lyosha [343]3 years ago

7 0

Answer: x=16

Step-by-step explanation:

28= 8x + 12-7x

28= 8x-7x +12

28= x + 12

-12 -12

16= x

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Simplyfy the given equation 5x+2(x-3)=-2(x-1)

Blizzard [7]

5x+2x−6=−2x+2

7x−6=−2x+2

7x=−2x+2+6

7x=−2x+8

7x+2x=8

9x=8

x=8/9

Hope this helps, have a blessed day! :-)

5 0

3 years ago

A bad contains 4 red marbles and 5 blue marbles. Two marbles are randomly drawn without replacement. Find the probability both m

kolbaska11 [484]

The probability is 2/9 because there are 9 marbles and 2 marbles were pulled out. hope I helped XD

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3 years ago

Ms. Garcia watched 6 commercials

Aleonysh [2.5K]

Answer:

15 commercials

Step-by-step explanation:

6 commercials --> 24 minute

x commercials --> 60 minute(1 hour)

x*24 = 6*60

clear x

x = (6*60)/24

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3 years ago

List the angles of the triangle below in order from smallest to largest.

Elan Coil [88]

Answer:

M,L,K

Step-by-step explanation:

The angle opposite the side is in the order of their size. So the larger the side the larger the angle

8 0

4 years ago

The department of public safety has an old memo stating that the number of accidents per week at a hazardous intersection varies

ELEN [110]

Answer:

P-value = 0.1515

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 2.2

Sample mean, $\bar{x}$ = 2

Sample size, n = 52

Alpha, α = 0.05

Population standard deviation, σ = 1.4

First, we design the null and the alternate hypothesis

$H_{0}: \mu =2.2\\H_A: \mu < 2.2$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{2 - 2.2}{\frac{1.4}{\sqrt{52}} } = -1.03$

Now, we calculate the p-value from the normal standard table.

P-value = 0.1515

6 0

3 years ago