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3 years ago

Which expression is equivalent to 6 x + 8?

Mathematics

2 answers:

Alex787 [66]3 years ago

5 0

Answer:

Step-by-step explanation:

took the test

miss Akunina [59]3 years ago

4 0

Answer:

the 2nd one

Step-by-step explanation:

2*3x is 6x

2*4 is 8

equation is 6x+8

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A certain intelligence test has an N(100, 100) distribution. To see whether intelligence is inherited, tests are given to the el

Anettt [7]

Answer:

Follows are the solution to the given choices:

Step-by-step explanation:

In choice a:

$\to \mu = 100$

In choice b:

$\to \mu \neq 100$

In choice c:

$\to \ pop \ average=100 \\\\ \to \ variance \ of \ pop = 100 \\\\\to pop \ \ \sigma = \sqrt {(!00)} \\$

= 10

$z= \frac{\bar x - \mu}{ \frac{\sigma}{\sqrt(n)}}\\\\$

$=\frac{(105-100)}{\frac{10}{ \sqrt(16)}}\\\\=\frac{(5)}{ \frac{10}{4}}\\\\=\frac{5}{ \frac{5}{2}}\\\\= \frac{10}{5}\\\\=2$

$\to p==2\times (1- \ righttail)\\\\\to \ righttail\ \ p = \text{NORM.S.DIST(2,TRUE)}$

$=0.977249868$

$\therefore \\P=2 \times (1-0.9772)\\\\P=0.0455\\\\P$

Null hypothesis to dismiss

Alternate solution assumptions embrace

There is really no valid proof at the 5% stage that

Knowledge is legacy

In choice d:

Possibly information such as this reflect a sample population with such a true p = 0.0455 meaning in the hypothesis

u is around 100.

11 +001

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3 years ago

Carol is going to buy a purse she found. It is originally $120.00, but has been marked down 25%. When carol goes to buy the purs

german

$97.2

120*.75 =90 (discounted price)
90*.08 = 7.2 (amount sales tax)

90 + 7.2= 97.2

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3 years ago

4. A group of friends rents a boat to spend an afternoon on a lake. The boat rental has a flat fee of $180 for up to three hours

OverLord2011 [107]

Answer:

it is D c= 180 + 50h + 20p

Step-by-step explanation:

c is the total cost and the boat is 180 but for additional hour it would be +$50

now the first four passenger is free but if another person comes on then it would be +$20 hope this help

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ExtremeBDS [4]

The correct answer is A

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3 years ago

3(2x + 7) - 2 (x + 5)

olga55 [171]

Answer:

Step-by-step explanation:

3(2x + 7) - 2 (x + 5)

need to distibute

5x+10-2x+3

combine like terms

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divide

x=4.3

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3 years ago

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