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UkoKoshka [18]
2 years ago
15

(-5) X ? =-15 find the missing number

Mathematics
2 answers:
likoan [24]2 years ago
5 0

Answer:

3

Step-by-step explanation:

(-5) × ? = (-15)

? = (-15)/(-5)

? = 3

VMariaS [17]2 years ago
4 0
<h3>Answer:</h3>

3

<h3>Step-by-step explanation:</h3>

(-5) × ? = -15

? = -15 ÷ (-5)

? = 15 ÷ 5

? = (3 × 3 × 3) <= 3 Factor

? = 3

<h3>Conclusion:</h3>

Value of ? is 3.

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3 years ago
due to recent damand, target is rasing the price of a certain video game by 24%. If the game previously sold for $25, what was t
brilliants [131]

increase =  25* .24 = 6 dollars

new price = old price + increase

new price = 25+6

new price = $31

5 0
3 years ago
The daily revenues of a cafe near the university are approximately normally distributed. The owner recently collected a random s
lbvjy [14]

Answer:

The sample size to obtain the desired margin of error is 160.

Step-by-step explanation:

The Margin of Error is given as

MOE=z_{crit}\times\dfrac{\sigma}{\sqrt{n}}

Rearranging this equation in terms of n gives

n=\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2

Now the Margin of Error is reduced by 2 so the new M_2 is given as M/2 so the value of n_2 is calculated as

n_2=\left[z_{crit}\times \dfrac{\sigma}{M_2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{\sigma}{M/2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{2\sigma}{M}\right]^2\\n_2=2^2\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4n

As n is given as 40 so the new sample size is given as

n_2=4n\\n_2=4*40\\n_2=160

So the sample size to obtain the desired margin of error is 160.

4 0
4 years ago
What's the value of 1/4 - 7/6
Anton [14]
The answer is -11/12
3 0
3 years ago
Write an equation in point-slope form of the line that passes through (3, -8) and (7,-2).
sashaice [31]

Answer:

A line that passes through (3, -8) and (7,-2).

Denote equation of that line: y = ax + b

=> Slope a can be directly determined by:

a = (7 - 3)/(-2 - -8) = 4/6 = 2/3

=> y = (2/3)x + b

This line passes (3, -8), then: -8 = (2/3)*3 + b => -8 = 2 + b => b = -10

=> y =(2/3)x - 10

There are other ways to find equation of line.

Hope this helps!

:)

3 0
3 years ago
Read 2 more answers
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