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Katen [24]
3 years ago
7

When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression? 10 x minus 25 y + 18 minus 25

x + 10 y minus 3 Negative 15 x minus 15 y + 15 Negative 10 x + 25 y + 18 + 25 x minus 10 y + 3 35 x minus 35 y + 21
Mathematics
2 answers:
yaroslaw [1]3 years ago
4 0

Answer:

The answer to your question is   35x - 35y + 21

Step-by-step explanation:

Data

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

Expand

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

Group like terms

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

Result

                      35x - 35y + 21

The answer is the last choice

Svetllana [295]3 years ago
3 0

Answer:

D

Step-by-step explanation:

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During an Apollo moon landing, reflecting panels were placed on the moon. This allowed Earth-based astronomers to shoot laser be
rusak2 [61]

Answer:

The distance between the astronomers and the moon was 7.56*10^{8] meters.

Step-by-step explanation:

We have that the speed is the distance divided by the time, so:

v = \frac{d}{t}

In this problem, we have that:

The reflected laser beam was observed by the astronomers 2.52 s after the laser pulse was sent. This means that t = 2.52.

If the speed of light is 3.00 times 10^8 m/s, what was the distance between the astronomers and the moon?

We have that v = 3*10^{8}m/s.

We have to find d. So:

v = \frac{d}{t}

d = vt

d = 3*10^{8}*2.52

7.56*10^{8]

The distance between the astronomers and the moon was 7.56*10^{8] meters.

7 0
4 years ago
HELP When does expanding and simplifying a(b + c) result in a positive value for ac?
Reil [10]

Answer:

When c and a are positive or both are negative

Step-by-step explanation:

negative times negative equals positive so if a was negative and c was negative -a*-c= ac

Of course positive times positive equals negative so if a and c were positive we could do

a*c= ac

Hope I could help !

7 0
3 years ago
What is the appoximate distance between points d and e round your answer to the nearest hundreth
Oksana_A [137]
The distance between the 2 points is approximately 8.25
5 0
3 years ago
Read 2 more answers
Dibuje la gráfica de la ecuación 2x + 3y = 6
Llana [10]

Answer:

y=3-3/2

Step-by-step explanation:

8 0
3 years ago
What value of x would make lines land m parallel? ​
solniwko [45]

Answer:

x = 75

Step-by-step explanation:

Given

See attachment

Required

The value of x that makes l and m parallel

Let the angles be ABC (See attachment 2)

\angle CAB is corresponding to 50 degrees. So:

\angle CAB=50

\angle ABC is corresponding to 55 degrees. So:

\angle ABC = 55

This means that:

\angle ABC + \angle CAB + x = 180

50 +55 + x = 180

Solve for x

x = 180 - 50 - 55

x = 75

4 0
3 years ago
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