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olganol [36]
3 years ago
13

When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression?

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
7 0

Answer:

35x-35y+21 is the resulting expression

Step-by-step explanation:

Simplify the expression: 0.5(20x-50y+36)-0.25(-100x+40y-12)

The distributive property says that:

a\cdot (b+c) = a\cdot b+ a\cdot c

Apply the distributive property we have;

10x-25y+18-(-25x+10y-3)

remove the open bracket and distribute  -1 into each terms.

10x-25y+18+25x-10y+3

Combine like terms;

35x-35y+21

Therefore, the resulting expression we get, 35x-35y+21

Scilla [17]3 years ago
5 0
.5(20x-50y+36)-.25(-100x+40y-12)
10x-25y+18+25x-10y+3
35x-25y+18-10y+3
35x-35y+18+3
35x-35y+21
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Roger read 4 more books in July then he did in January how many books did he read in July
ivanzaharov [21]

Answer:

13

Step-by-step explanation:

If he read 9 books in january and read 4 more in july than he did in january then he read 13 books in july.

3 0
3 years ago
Mr.Gadgets car broke down on the turnpike.Acme towing charged $30 plus $3 per mile to tow the car.If Mr.Gadget paid $174, how fa
aalyn [17]

The car was towed for 48 miles.

Step-by-step explanation:

Given,

Amount charges by Acme towing = $30

Per mile charges = $3

Total charged = $174

Let, x be the number of miles.

Towing charges + Per mile charges*number of miles = Total charged

30+3x=174

Subtracting 30 from both sides

30-30+3x=174-30\\3x=144

Dividing both sides by 3

\frac{3x}{3}=\frac{144}{3}\\x=48

The car was towed for 48 miles.

Keywords: linear equation, subtraction

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8 0
3 years ago
Amy and Roger both wash windows at a large downtown building. Amy can wash 25 windows in 4 hours. Roger can wash 32 windows in 6
nirvana33 [79]

Answer:

139

Step-by-step explanation:

Brainliest?

8 0
3 years ago
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Mark spends a total of $68.82 for 2 pairs of sneakers with the same cost. The sales tax is $5.32. Mark also uses a coupon for $3
shutvik [7]

Each pair of sneakers cost $33.25

Step-by-step explanation:

Given,

Total spent by Mark = $68.82

Sales tax = $5.32

Coupon used = $3.00

Price without sales tax = Total spent - sales tax

Price without sales tax = 68.82 - 5.32 = $63.50

As Mark used coupon, we will add this amount.

Amount of sneakers = Price without sales tax + Coupon used

Amount of sneakers = 63.50+3.00 = $66.50

As this is price of two sneakers, we will divide it by 2;

Cost of one sneaker = \frac{66.50}{2}=\$33.25

Each pair of sneakers cost $33.25

Keywords: subtraction, addition

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5 0
3 years ago
The ancient Greeks could bisect an angle using only a compass and straightedge.A. TrueB. False
Gala2k [10]

Answer: True.

The ancient Greeks could bisect an angle using only a compass and straightedge.

Step-by-step explanation:

The ancient Greek mathematician <em>Euclid</em> who is known as inventor of geometry.

The Greeks could not do arithmetic. They had only whole numbers. They do not have zero and negative numbers.

Thus, Euclid and the another Greeks had the problem of finding the position of an angle bisector.

This lead to the constructions using compass and straightedge. Therefore, the straightedge has no markings. It is definitely not a graduated-rule.

As a substitute for using arithmetic, Euclid and the Greeks learnt to solve the problems graphically by drawing shapes .

5 0
3 years ago
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