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Readme [11.4K]
2 years ago
7

Directions: Simplify each expression by distributing 1. 8(x + 5) = 3.-2(3m + 9) =

Mathematics
1 answer:
TiliK225 [7]2 years ago
7 0

Answer:

  1. 8x +40
  2. -6m-18

Step-by-step explanation:

8(x + 5) =  \\ 8(x) + 8(5) \\  = 8x + 40

- 2(3m + 9) \\  =  - 2(3m)  - 2(9) \\  =  - 6m - 18

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Please help :( a to d, will give brainliest!!
____ [38]

Answer:

a) y=4x-3

b) y=-1/2x+4

c) y=-3x+8

d) y=5/3x-1

Step-by-step explanation:

y1-y2/x1-x2

Plug in the numbers and solve.

4 0
2 years ago
Solve this system of equations using substitution:
irina [24]
The substitution method means you replace the variable in one equation with the other equation, so your new equation is x+4x-8=10. Add 10 to both sides to get 5x=18. Divide both sides by 5 to get x=3.6. This is a weird equation, but then to get y, work backwords. 3.6 times 2=7.2. 7.2-4=3.2 y=3.2. Finally to finish checking solve the equation as normal. 3.6+6.4=10. I hope this helped! Please give brainliest!
Your final answer is x=3.6 y=3.2
3 0
2 years ago
What is the length of the missing side?
Lina20 [59]

Answer:

seventeen [17]

Step-by-step explanation:

8*8=64+15*15=225 so 225+64=289 and √289=17

6 0
3 years ago
3)June 2019-In the diagram below of AABC, D is a
Alexeev081 [22]

Answer:

BC = 23.8

Step-by-step explanation:

See the diagram attached.

Given AC ║ DE and BD = 5, DA = 12 and BE = 7.

We have to find BC.

Since, AC ║ DE, so, Δ ABC and Δ DBE are similar.

If two triangles are similar then the ratio of their corresponding sides remains the same.

Hence, \frac{BD}{BA} = \frac{BE}{BC}

⇒ \frac{5}{12 + 5} = \frac{7}{BC}

⇒ BC = \frac{7 \times 17}{5} = 23.8 (Answer)

7 0
3 years ago
What's 14/63 in simplest form
serious [3.7K]
You would cancel the common factors in the numerator and denominator. 

Exact Form: 
2/9 

Decimal Form: 
0.222222222.....
8 0
3 years ago
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