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2 years ago

Stephen can deliver 14 newspapers in 20 minutes. How many HOURS will it take him to deliver 131 newspaper

Mathematics

1 answer:

LiRa [457]2 years ago

7 0

Answer:

approx. 3 hours

Step-by-step explanation:

14 newspapers in 20 minutes means he can deliver 42 newspapers an hour.

60/42 = 1.4285 newspapers per minute

131 x 1.4285 = 187.1335 minutes = 3.1188 hours

You might be interested in

Which inequality represents all values of x for which the product below is defined

zavuch27 [327]

Answer:

(-∞, -2) ∪ (0, ∞)

Step-by-step explanation:

Multiply together the (7x) and the (x+2), obtaining 7x^2 + 14x. This is the correct argument (input) to Answer A.

Since the domain of the square root function includes "all real numbers equal to or greater than 0," we set 7x^2 + 14x = to 0. This factors to the original 7x*(x+2), set equal to 0. The roots are 0 and -2.

These two values create three intervals: (-∞, -2), (-2, 0) and (0, ∞).

Choosing test numbers, one from each interval: {-5, -1, 1}.

7x^2 + 14x is + at x = -5, - at x = -1, and + at x = 1.

Thus, the domain of this function is (-∞, -2) ∪ (0, ∞). In other words, the product shown is defined on (-∞, -2) ∪ (0, ∞).

5 0

3 years ago

The equation x2 – 1x – 90 = 0 has solutions {a, b}. What is a + b

Andrews [41]

X^2 - x - 90 =0
This equation is in standard form ax^2+ bx + c
The sum of the solutions is -b/a (a and b are the coefficients from the equation above, not the solutions to the equation)
The answer is 1/1 = 1

8 0

2 years ago

Read 2 more answers

2. A used PlayStation 4 is on sale for 10% off the regular price of $160.00. If the sales tax rate is 9%, how much would I pay f

34kurt

Answer:

$156.96

Step-by-step explanation:

10% off of $160.00 would be $16.00 so minus that by $160.00. Which then equals $144.00. Sales tax should be reduced to the sale price. So that would make it 144 times 0.09 for the 9% which equals $12.96 then add the $144.00 which then makes it $156.96. Hope it helps and I'm not wrong about sales tax:)

3 0

2 years ago

2. Meryl spends a total of $68.82 for 2 pairs of 68.8

kupik [55]

Answer:

The cost of each pair of sneakers is $33.25.

Step-by-step explanation:

Consider the provided information.

Meryl spends a total $68.82 for 2 pairs of sneakers with the same cost.

If the sales tax is $5.32 and she also uses a coupon for $3.00 off her purchase.

First subtract the sales tax from the spend amount.

$\$68.82- \$5.32=\$63.5$

She use a coupon for $3.00 OFF.

$\$63.5+\$3=\$66.5$

$66.5 was the cost of 2 pairs of sneakers before using the coupon.

Now divide $66.5 by 2 so that we can find the cost of one pair of sneakers.

$\frac{\$66.5}{2} =\$33.25$

Hence, the cost of each pair of sneakers is $33.25.

5 0

3 years ago

What is the discriminant of 9x2 + 2 = 10x? a. -356 b.–172 c.28 d. 72

velikii [3]

Discriminant is 28 (c) First get the equation into the form: Ax^2 + Bx + C = 0 (the quadratic equation).. By subtracting 10x both sides (to get it on the other side).. 9x^2 + 2 = 10x 9x^2 - 10x + 2 = 10x - 10x 9x^2 - 10x + 2 = 0 Now the discriminant is: b^2 - 4ac The quadratic equation is Ax^2 + Bx + C = 0 Here, A = 9, B = -10 and C = 2 (-10)^2 - 4 (9)(2) = 100 - 4 (18) = 100 - 72 = 28

3 0

3 years ago

Read 2 more answers