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MatroZZZ [7]
3 years ago
8

PLEASE HELP!! explain how to solve 2x+9= 15

Mathematics
1 answer:
Dovator [93]3 years ago
7 0

Answer:

Step-by-step explanation:

2x + 9 = 15

you move + 9 to the other side of the equation, you will get:

2x = 15 - 9

2x = 6

So, x = 3

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Find the critical value necessary to form a confidence interval at the level of confidence shown below.
Rzqust [24]

Answer:

the critical value for 0.87 level of confidence is 1.51

Step-by-step explanation:

Given the data in the question;

level of confidence = 0.87

now,

1 - c = 0.87

c = 1 - 0.87

c = 0.13

c/2 = 0.13/2 = 0.065

now

1 - c/2  = 1 - 0.065 = 0.935

so our level of significance ∝ = 0.935

Now, the critical value will be;

Z_{0.935 is obtained as follows;

P( Z < z ) = 0.935

so we find the value from ( standard normal distribution table )

P( Z < 1.51 ) = 0.935

Therefore, the critical value for 0.87 level of confidence is 1.51

8 0
3 years ago
Find 2 consecutive even integers such that twice the larger integer is four more than half of the smaller integer
solong [7]

Answer:

0 and 2

Step-by-step explanation:

Let the two consecutive integers be 2x and 2x+2

We are given that twice the larger integer is four more than half of the smaller integer

2(2x+2)=\frac{1}{2}(2x)+4

4x+4=x+4

x=0

So, Two consecutive integers are 2(0)=0 and 2(0)+2=2

Hence the two consecutive integers are 0 and 2

6 0
3 years ago
Find the percent error of 4cm and 0.2 cm? Please help, thanks.
Readme [11.4K]
The percent error is 1,900%
3 0
3 years ago
What are the rules to remember when dividing fractions?
harkovskaia [24]

Answer:

copy the first fraction, turn the division sign to a multiplication sign and flip the second fraction

Step-by-step explanation:

ex: 2/5 divided by 1/4

turn it to- 2/5 x 4/1

5 0
3 years ago
Read 2 more answers
Please help me with this I will give out extra points with the brain this math question
Leni [432]

Answer:

D)

Step-by-step explanation:

The hypotenuse is a bit longer than that of the longer side.

Say, 17 miles.

15+8+17

23+17

40

40 is equal to D.

Hope this helped!

4 0
3 years ago
Read 2 more answers
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