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3 years ago

What is 16 less 5 as a numerical expression?

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

5 0

Answer:

5 - 16

Step-by-step explanation:

5 - 16

Solved

-11

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To estimate μ, the mean salary of full professors at American colleges and universities, you obtain the salaries of a random sam

GenaCL600 [577]

Answer:

Step-by-step explanation:

The formula for calculating the confidence interval is expressed as;

CI = xbar ± z*s/√n

xbar is the sample mean = $73,220

z is the z score at 99% CI = 2.576

s is the standard deviation = $4400

n is the sample size = 400

Substitute the given values into the formula;

CI = 73,220 ± 2.576*4400/√400

CI = 73,220 ± 2.576*4400/20

CI = 73,220± (2.576*220)

CI = 73220±566.72

Hence a 99% confidence interval for μ is 73220±566.72

5 0

3 years ago

The perimeter of the rectangle she below is 24feet

maxonik [38]

This is really obvious but the answer is 4 feet.

6 0

4 years ago

3x + ky = 8

sattari [20]

Answer:

(a): x is 3 and ky is -1

(b): k is -2

Step-by-step explanation:

Let: 3x + ky = 8 be equation (a)

x - 2 ky = 5 be equation (b)

Then multiply equation (a) by 2:

→ 6x + 2ky = 16, let it be equation (c)

Then equation (c) + equation (b):

${ \sf{(6 + 1)x + (2 - 2)ky = (16 + 5)}} \\ { \sf{7x = 21}} \\ { \sf{x = 3}}$

Then ky :

${ \sf{2ky = 3 - 5}} \\ { \sf{ky = - 1}}$

${ \bf{y = \frac{1}{2} }} \\ { \sf{ky = - 1}} \\ { \sf{k = - 2}}$

4 0

3 years ago

Math <img src="https://tex.z-dn.net/?f=%282a%20%2B%203%29%20%2B%20%283a%20-%207%29" id="TexFormula1" title="(2a + 3) + (3a -

Yuki888 [10]

Answer:

5a -4

Step-by-step explanation:

Given

(2a + 3) + (3a - 7) ← remove parenthesis

= 2a + 3 + 3a - 7 ← collect like terms

= (2a + 3a) + (3 - 7)

= 5a + (- 4)

= 5a - 4

3 0

3 years ago

Read 2 more answers

Can someone help me with these problems?

arlik [135]

1: 200-75= r

2: 73-29= v
73-29=44
v=44

6 0

4 years ago

Read 2 more answers