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Olin [163]
4 years ago
9

Help ASAP!! Math problems

Mathematics
1 answer:
const2013 [10]4 years ago
5 0

Answer:

7. C

8. D

Step-by-step explanation:

7. The interest rate is 8% or .08. You find that by solving I=Prt (interest=original amount*rate*time in years)

8. The discounted price would be $48 (80*(1-.40)) Then you multiply that 48 by .08 and add that amount to the $48.

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What is the less of side a? Round to the nearest tenth of an inch.
frutty [35]

Answer:

About 14 in the exact value is 14.38 smthn

6 0
3 years ago
The length of a rectangle is three times it's width. If the width is diminished by 1 m and length is increased by 3 m, the area
Stella [2.4K]

Answer: the length is 15 m and the width is 5 m

Step-by-step explanation:

Let L represent the original length of the rectangle.

Let W represent the original width of the rectangle.

The length of a rectangle is three times it's width. This means that

L = 3W

If the width is diminished by 1 m and length is increased by 3 m, the area of the rectangle that is formed is 72 m². This means that

(L + 3)(W - 1) = 72

LW - L + 3W - 3 - 72 = 72 + 3

LW - L + 3W = 75 - - - - -- - - - - - 1

Substituting L = 3W into equation 1, it becomes

3W × W - 3W + 3W = 75

3W² = 75

W² = 75/3 = 25

W = √25 = ±5

The width cannot be negative. Therefore, the width is 5 m

L = 3W = 3 × 5 = 15 m

3 0
4 years ago
An equation is shown below:
rodikova [14]

Answer:

it is d, step 1: 14x - 21; step 2: 14x=22

Step-by-step explanation:

7(2x-3)=1   1. multiply 7 with (2x) and (-3)

14x-21=1    2. +21 on both sides

14x= 22      3. /14 on both sides

x=1.8

but I will say d is the correct answer

5 0
2 years ago
Which equation represents a line through (-2, 1) that is perpendicular<br> to y = -5x + 2?
patriot [66]

Step-by-step explanation:

1=-5(-2)+2

1-2=10

-1=10

10+1

11

3 0
4 years ago
Read 2 more answers
Please help me I’ll give brainliesst tysm
Zolol [24]

Answer:

1) 1.6 inch

2) 10.05inch

Step-by-step explanation:

radius = diameter/2 = 3.2/2 = 1.6 inch

circumference = 2πr = 2 * 3.14 * 1.6 =10.048=10.05inch

7 0
3 years ago
Read 2 more answers
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