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2 years ago

15

Mike had two hundred fifty- eight dollars to spend on nine books. After buying them he had fifteen dollars. How much did each bo

ok cost?

1 answer:

vaieri [72.5K]2 years ago

4 0

Answer:

$27 per book

Step-by-step explanation:

258 - 9(books) = 15

258-15 = 243

243 / 9=27

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If you can drive 32 miles on one gallon of gas how many miles can you drive on 20 gallons?

Veseljchak [2.6K]

Answer:

640

Step-by-step explanation:

32 *20

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2 years ago

Function f(x) is positive, increasing and concave up on the closed interval [a, b]. The interval [a, b] is partitioned into 4 eq

Umnica [9.8K]

The left sum would be f0+f1+f2+f3

The right sum would be f1+f2+f3+f4

The trapezoidal rule value is:

(f0+f1)/2 + (f1+f2)/2+(f2+f3)/2 +(f3+f4)/2

This would put the trapezoidal rule in the middle , which makes the answer:

Lower sum < Trapezoidal rule Value < Upper sum

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2 years ago

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For f(x) = x + 7, find f(x) when x = 3 and when x = -5.

denpristay [2]

Answer:

When x = 3

f(3) = 3 + 7 = 10

When x = -5

f(-5) = -5 + 7 = 2

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2 years ago

How do u do order pairs

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Write the quadratic equation in standard form and then choose the value of "b." (2x - 1)(x + 6) = 0

Eddi Din [679]

ANSWER

b=11

EXPLANATION

The given quadratic equation is

$(2x - 1)(x + 6) = 0$

We expand to get:

$2 {x}^{2} + 12x - x - 6 = 0$

We simplify further by combining the x terms.

$2 {x}^{2} + 11x - 6 = 0$

This is the standard form.

Comparing to

$a{x}^{2} + bx + c= 0$

We have b=11

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2 years ago