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2 years ago

75% of the normal price of headphones is 45$. What's the normal price?

Mathematics

1 answer:

Brums [2.3K]2 years ago

4 0

Answer:

60$ is the normal price.

Why:

Because if 45$ is 75%, then 30$ is 50%, 15 is 25%, and 0 is 0%. 50% + 50% = 100%. (That's how I did this one, anyway. This works on any 25%, 50%, or 75% problem.)

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The quotient of 9 3/4 and 5/8

rewona [7]

Answer:

15.6

Step-by-step explanation:

The answer is 15.6 because if you divide 9 3/4 by 5/8, you get 78/5, or 15.6 in decimal form. Hope it helps!

8 0

3 years ago

Read 2 more answers

Suppose a 2011 Gallup poll revealed that 76% of Americans believe that high achieving students should be recruited to become tea

k0ka [10]

Answer:

95% Confidence interval: (0.73,0.79)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1021

Percentage of Americans believe that high achieving students should be recruited to become teachers

$\hat{p} = 76\% = 0.76$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get:

$0.76\pm 1.96(\sqrt{\dfrac{0.76(1-0.76)}{1021}})\\\\ = 0.76\pm 0.0261\\=(0.7339,0.7861)\\\approx (0.73,0.79)$

5 0

2 years ago

Perhatikan pola bilangan berikut:2,-6,18,-54,162,...

andrezito [222]

Answer:

no comprehendo

Step-by-step explanation:

8 0

2 years ago

WHAT IS THE SLOPE OF THE LINE PASSING THROUGH THE POINTS (-2, -7) AND (3, 5)?????? PLZ ANSWER QUICKLY!!

jarptica [38.1K]

Answer:

The slope of the line with points A(-2, -7) and B(3,5) is m = (12/5).

Step-by-step explanation:

The two pints are given as A(-2, -7) and B(3,5)

Slope of a line with points (a,b) and (c,d) is given as

$m =( \frac{d -b}{c-a} )$

So, here the slope of line AB is

$m =( \frac{5 - (-7)}{3 - (-2)} ) = \frac{5+ 7}{3 +2} = \frac{12}{5}$

or, m = 12/5

Hence, the slope of the line with points A(-2, -7) and B(3,5) is (12/5).

8 0

3 years ago

| x+4 | = 5<br><br> Solve the absolute value equation or indicate that the equation has no solution.

vladimir2022 [97]

| x + 4 | = 5

x + 4 = 5 x + 4 = -5
x = 5 - 4 x = -5 - 4
x = 1 x = -9

solution : x = 1 and x = -9

8 0

2 years ago