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Mnenie [13.5K]
3 years ago
13

Please tel me the answer to 17- ? =12

Mathematics
1 answer:
Volgvan3 years ago
7 0

Answer:

5

Step-by-step explanation:

17 - ? = 12

-? = 12 - 17

-? = -5

? = 5

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A group of 40 bowlers showed that their average score was 192. Assume the population standard deviation is 8. Find the 95% confi
kodGreya [7K]

Answer:

CI=189.5,194.5

Step-by-step explanation:

From the question we are told that:

Sample size n=40

Mean \=x =192

Standard deviation\sigma=8

Significance Level \alpha=0.05

From table

Critical Value of Z=1.96

Generally the equation for momentum is mathematically given by

 CI =\=x \pm z_(a/2) \frac{\sigma}{\sqrt{n}}

 CI =192 \pm 1.96 \frac{8}{\sqrt{40}}

 CI=192 \pm 2.479

 CI=189.5,194.5

5 0
3 years ago
Ivan and Tanya share £150 in the ratio 4: 1<br> Work out how much more Ivan gets compared to Tanya.
Dennis_Churaev [7]
Ivan gets £112.5(0) more than Tanya
7 0
2 years ago
The mass of a basket with 25 chocolate bars is 1110g. The mass of the empty basket is 310 g. A. What is the mass of 1 chocolate
shusha [124]

Answer:

A. 32 g

B. 3670 g

Step-by-step explanation:

Basket + 25 bars: 1110 g

Basket: 310 g

25 bars: 1110 g - 310 g = 800 g

1 bar: 800 g / 25 = 32 g

105 bars: 105 × 32 g = 3360 g

Basket + 105 bars: 310 g + 3360 g = 3670 g

Answer:

A. 32 g

B. 3670 g

5 0
2 years ago
stilt scored 5 points less than twice the number scored by dunk. together they scored 43 points. how many points were scored by
gizmo_the_mogwai [7]
Set up a system of equations:

s = 2d - 5
s + d = 43

Where 's' represents the number of points Stilt scored and 'd' represents the number of points Dunk scored.

Plug in 2d - 5 for 's' in the 2nd equation:

s + d = 43

2d - 5 + d = 43

Combine like terms:

3d - 5 = 43

Add 5 to both sides:

3d = 48

Divide 3 to both sides:

d = 16

Plug this back into any of the two equations to find 's':

s + d = 43

s + 16 = 43

Subtract 16 to both sides:

s = 27

So Dunk scored 16 points and Stilt scored 27 points.
4 0
3 years ago
Is 0, 3 a solution to the equation Y equals X plus 3 ,? yes or no
Elza [17]
Yes,

(0,3) = (x,y)
0 = x
3 = y

Y = x + 3
Turns into:
3 = 0 + 3

0 + 3 = 3

Hope this helps you understand! <3
3 0
3 years ago
Read 2 more answers
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