3 years ago

HELP!!!!!!!!! Please P.S. I need the answer ASAP

Mathematics

2 answers:

Alex Ar [27]3 years ago

7 0

I think it is distributive property?

zzz [600]3 years ago

6 0

Step 1 associative property
step 2 subtract 2x from both sides
step 3 add 28 to both sides
step 4 divide 2 on both sides

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AysviL [449]

Wow! So so so cool lol

8 0

2 years ago

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Bailey and Elena compete in a swim race

gogolik [260]

Answer:

yaah then bailey has fun with her

Step-by-step explanation:

5 0

3 years ago

3/5x + 1/2y=30 in need x and y intercepts step by step please

Free_Kalibri [48]

Substitute X or Y With 0 So It Would Be 3/5(0) +1/2y = 30
1/2y=30
Divide Get Y And Do The Same For X

4 0

3 years ago

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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 15 years, and standard deviation of 3

Gala2k [10]

Answer:

The probability that their mean life will be longer than 13 years = .9943 or 99.43%

Step-by-step explanation:

Given -

Mean $(\nu )$ = 15 years

Standard deviation $(\sigma )$ = 3.7 years

Sample size ( n ) =22

Let $\overline{X}$ be the mean life of manufacturing items

the probability that their mean life will be longer than 13 years =

$P(\overline{X}> 13)$ = $P(\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}}> \frac{13 - 15 }{\frac{3.7}{\sqrt{22}}})$ $(Z =\frac{\overline{X} - \nu }{\frac{\sigma }{\sqrt{n}}})$

= $P(Z> -2.53)$

= $1 - P(Z < -2.53)$ Using Z table

= 1 - .0057

= .9943

7 0

3 years ago

Which of the following pairs of numbers contains like fractions?

Harrizon [31]

Answer:

Step-by-step explanation:

if you multiply 5 by 2 you get 10

if you multiply 6 by 2 you get 12

5/2 (2) =10/12

Hope this helped

4 0

3 years ago

Read 2 more answers