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2 years ago

Solve 15x +2=17 Please help me. It’s superrrr important

Mathematics

1 answer:

posledela2 years ago

4 0

Answer:

15x +2=17 so the first thing you want to do is minus 2 then divide by 15 which gives you x=1

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A researcher wants to estimate the mean commute time of residents in Westchester County. The researcher samples 40 commuters and

Ksenya-84 [330]

Answer:

21.759

Step-by-step explanation:

Given that :

Mean (m) = 25

Standard deviation (s) = 12.5

Sample size (n) = 40

α = 90%

The confidence interval is obtained using the relation:

Mean ± Zcritical * s/sqrt(n)

Zcritical at 90% confidence interval = 1.64

25 ± 1.64 * (12.5/sqrt(40))

Lower boundary : 25 - 1.64(1.9764235) = 21.75866546

Upper boundary : 25 + 1.64(1.9764235) = 28.24133454

(21.759, 28.241)

Hence, lower bound of confidence interval is : 21.759

4 0

2 years ago

In triangle JKL, if angle J is seven less than angle L and angle K is 21 less than twice angle L, find the measure of each angle

saul85 [17]

Answer:

L = 52°

J = 45°

K = 83°

Step-by-step explanation:

J = L - 7

K = 2L - 21

J + K + L = 180°

∴ (L - 7) + (2L - 21) + L = 180

4L - 28 = 180

4L = 208

L = 52°

J = 52 - 7 = 45°

K = 2 x 52 - 21 = 83°

7 0

2 years ago

NEED HELP ASAP WILL GIVE BRAINLY IF CORRECT

Rama09 [41]

Answer:

I think it's the 3rd one but tell me if I'm wrong

7 0

2 years ago

Read 2 more answers

Hurry show your work

Nikolay [14]

Answer: $\huge\boxed{\boxed{15}}$

Step-by-step explanation:

<u>Given expression</u>

$\large\boxed{\frac{12[30 - (9+4^2)]}{|10|-|-6| } }$

<u>Simplify the exponents</u>

$\large\boxed{=\frac{12[30 - (9+16)]}{|10|-|-6| } }$

Simplify values in the parenthesis

$\large\boxed{=\frac{12[30 - 25]}{|10|-|-6| } }$

$\large\boxed{=\frac{12[5]}{|10|-|-6| } }$

<u>Simplify absolute values (all positive)</u>

$\large\boxed{=\frac{12[5]}{10-6 } }$

$\large\boxed{=\frac{12[5]}{4 } }$

<u>Simplify by division</u>

$\large\boxed{=3~[5]}$

<u>Simplify by multiplication</u>

$\huge\boxed{\boxed{=15}}$

Hope this helps!! :)

Please let me know if you have any questions

7 0

10 months ago

How do you write 7.18 as a fraction?

balandron [24]

<h2>Convert decimals to fractions</h2>

<em>To write 7.18 as a fraction, you must write 7.18 as the numerator and put 1 as the denominator. </em><em>Now multiply the numerator and denominator</em><em> by 10 until you get a whole number in the </em><em>numerator.</em>

<em>And finally we have:</em>

<h3>7.18 a fraction is equal to 718/100</h3>

<h2>See more about this at:</h2><h3>brainly.com/question/19799363</h3>

4 0

1 year ago