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4 years ago

Find (-9/10)+22/15+13/-20

Mathematics

1 answer:

Zina [86]4 years ago

6 0

Answer:

-1/12 or -0.083333

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After a 35% discount, a book costs 11.21, what is the normal undiscounted price of the book?

abruzzese [7]

Answer:

15.11

11.21 x 35% = 3.9

3.9 + 11.21 =15.11

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7 0

3 years ago

Lynette bought 2CDs for the same price.She paid $23.15,including sales tax of $1.19 and a $2.00 discount coupon.What was the pri

Anna71 [15]

$11.57 per CD without tax and coupon

3 0

3 years ago

Read 2 more answers

Oxana [17]

Answer:

Step-by-step explanation:

$a(n) = a1 *(1.25)^{(n-1)}$

$a(1) = 5$

$a(2) = 5*(1.25)^{(2-1)}\\a(2) = 5*(1.25)^{1}\\a(2) = 5*(1.25)\\a(2) = 6.25$

$a(3) = 5 * (1.25)^{(3-1)} \\a(3) = 5 * (1.25)^{2}\\a(3) = 5 * 1.565\\a(3) = 7.813$

$a(4) = 5* (1.25)^{(4-1)}\\ a(4) = 5* (1.25)^{3}\\a(4) = 5* 1.953\\a(4) = 9.766$

$a(5) = 5 * (1.25)^{(5-1)}\\a(5) = 5 * (1.25)^{4}\\a(5) = 5 * 2.441\\a(5) = 12.207$

$a(6) = 5 * (1.25)^{5}\\a(6) = 5 * 3.052\\a(6) = 5 * 3.0517\\a(6) = 15.259$

$a(1) = 5$

$a(2) = 6.25$

$a(3) = 7.813$

$a(4) = 9.766$

$a(5)=12.207$

$a(6)=15.259$

3 0

3 years ago

an angle measures 58.4° more than the measure of its supplementary angle what is the measure of each angle

olga55 [171]

Answer:

58.4

119.2

Step-by-step explanation:

Givens

Let one angle = x

Let the other angle = x + 58.4

Together they make 180 degrees.

Equation

x + x + 58.4 = 180 Collect like terms.

Solution

2x + 58.4 = 180 Subtract 58.4 from both sides

2x = 180 - 58.4

2x = 121.6 Divide by 2

x = 60.8

Answer

x = 60.8

x + 58.4 = 119.2

8 0

3 years ago

Read 2 more answers

What is the inverse of f(x)=(4x-3)/7

iragen [17]

Answer:

f(x)^-1 = $\frac{1}{28} x + \frac{3}{4}$

Step-by-step explanation:

f(x) = (4x - 3) / 7

y = (4x - 3) / 7

x = (4y - 3) / 7

x / 7 = 4y - 3

x/7 + 3 = 4y

y = $\frac{1}{28} x + \frac{3}{4}$

5 0

2 years ago