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salantis [7]
4 years ago
8

Please Simplify these expressions:

Mathematics
2 answers:
Dahasolnce [82]4 years ago
6 0

Answer:

.

Step-by-step explanation:

1.2a+4a+10-6

=6a+4.

2.-7+7+3x-5x

=-2x.

3.-15b+10+10b

-15b+10b+10

=-5b+10

4.-8-6-4d+d+3b

-14-3d+3b.

weeeeeb [17]4 years ago
3 0

Answer:

1) 2a+4a+10-6= 6a + 4

2) 3x-5x+7-7= -2x

3) - 15b+10 +10b= -5b + 10

4) - 4d+d-8-6+3b= - 3d - 14 +3b

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Hannah has $2 worth of dimes and quarters. She has a total of 17 dimes and quarters altogether. By following the steps below, de
sineoko [7]

Answer:

2 quarters and 15 dimes

Step-by-step explanation:

15 dimes = $1.50

2 quarters = $0.50

$1.50+$0.50=$2.00

4 0
3 years ago
What is the solution for -10 < x - 9?
ikadub [295]
ANSWER:

x > - 1

STEP-BY-STEP EXPLANATION:

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x > - 10 + 9

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6 0
4 years ago
Find the sum of the first 42 terms of the following series, to the nearest
balandron [24]

Answer:

Step-by-step explanation:

Find the sum of the first 42 terms of the following series, to the nearest integer.

2,7,12

Solution

The sum is given by  

SUM_n=n/2*(a_1+a_n)

a_n=a_1+(n-1)d

a_1=2,   n=42,     d=5

The 42nd term is therefore given by  

a_42=2+(42-1)5=207

SUM_42=42/2*(2+207)=21*209=4389

The sum of the first 42 terms of the series, therefore, is 4389

5 0
3 years ago
Find the measure of an angle whose complement is five times its measure.
ch4aika [34]

Answer:

The measure of the unknown angle is 15°.

Step-by-step explanation:

Represent this angle by A.  Then the complement of A is 90° - A.

"Angle whose complement is five times its measure" would be expressed as

90° - A = 5A

Solve this for A by adding A to both sides:

90° = 6A.  Then A = 90°/6, or 15°

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3 years ago
As an estimation we are told 5 miles is 8 km.<br> Convert 32 km to miles.
Gala2k [10]

Answer:

19.8839

Step-by-step explanation:

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