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Sveta_85 [38]
2 years ago
6

What is the value of x in the expression, x 2 = 9? Type the NUMBER in the box below.

Mathematics
1 answer:
alekssr [168]2 years ago
7 0
The value of x in the expression, x 2 = 9 is 4.5

9 divided by 2 = 4.5
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A multinational firm wants to estimate the average number of hours in a month that theiremployees spend on social media while on
elena55 [62]

Answer:

95% of the population spent between 16.8 hours to 26.2 hours on social media per month

Step-by-step explanation:

  1. subtracting 1 from sample size: 83-1= 82
  2. Note Mean=21.5 and standard deviation=2.5
  3. Subtracting confidence interval from 1 and dividing by 2: (1-0.95)/2=0.025
  4. At α=0.025 and dF=82,  the t-distribution table gives  1.984
  5. Divide standard deviation by square root of sample size: 21.5/√83= 2.36
  6. Multiplying answer in step 4 by answer in step 5: 2.36×1.984= 4.68
  7. For lower end: 21.5-4.68= 16.82
  8. for upper end: 21.5+4.68=26.18

7 0
3 years ago
Read 2 more answers
Find the equation,in standard form, of the line passing through the point (2,-3) and (4,2)
VLD [36.1K]

The standard form:

Ax+By=C

The point-slope form:

y-y_1=m(x-x_1)

m - slope

(x₁, y₁) - point

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (2, -3) and (4, 2). Substitute:

m=\dfrac{2-(-3)}{4-2}=\dfrac{5}{2}

y-(-3)=\dfrac{5}{2}(x-2)

y+3=\dfrac{5}{2}(x-2)       <em>use distributive property</em>

y+3=\dfrac{5}{2}x-5            <em>multiply both sides by 2</em>

2y+6=5x-10                     <em>subtract 6 from both sides</em>

2y=5x-16         <em>subtract 5x from both sides</em>

-5x+2y=-16          <em>change the signs</em>

\boxed{5x-2y=16}

8 0
2 years ago
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Please help me I'm stressing out anyone that's not done or you think that I'll need help with
Nataliya [291]
1. 7.25
2. 6.125
3. 3.4
4. 0.15
5. 77
6. 2.15
7. 33.16
8. 1.95
9. 19
10. 0.3
11. 6.2
12. 405
13. 250
14. 11.8
5 0
2 years ago
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Sam went for a ride on a sailboat the ride lasted 3/4 hour . what fraccion is equivalent 3/4
Trava [24]

Some fractions are 6/8, 9/12 and 12/16

All you have to do is multiply a number by the numerator and denominator

4 0
3 years ago
What is the formed of the fact family for 6,7,13 what is the answer​
Keith_Richards [23]

Answer:

7 + 6 = 13

13 = 7 + 6

13 – 6 = 7

7 = 13 – 6

Step-by-step explanation:

7 + 13 = 20

13 + 7 = 20

13 – 13 = 0

13 – 0 = 13

7 + 0 = 7

6 + 0 = 6

13 – 0 = 13

13 – 13 = 0

7 + 0 = 7

6 + 0 = 6

13 – 0 = 13

13 – 13 = 0

7 + 6 = 13

13 = 7 + 6

13 – 6 = 7

7 = 13 – 6

5 0
2 years ago
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