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Bess [88]
4 years ago
12

Can someone help me

Mathematics
1 answer:
ryzh [129]4 years ago
7 0

Answer:

Answer a: mST=20

Answer b: mST=48

Step-by-step explanation:

Problem a:

3a-5=2a+50

a=55

2(55)+50=160

180-160=20

Problem b:

180=4c-12

192=4c

48=c

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8. The scatter plot shows a hiker's elevation above
g100num [7]

Answer:

The hiker's elevation  after 145 minutes will be 1958 meters.

Step-by-step explanation:

The equation of the trend line of the scatter plot showing a hiker's elevation is y = 8.77x + 686 .......... (1), where x is in minutes (say) and y is in meters (say).

Now, we have to predict the hiker's elevation after 145 minutes.

So, from equation (1) we get, y = 8.77 × 145 + 686 = 1957.65 ≈ 1958 meters. (Answer)

3 0
4 years ago
What is the definition of percent of change
Sonja [21]
Ratio of amount of change to original shown as a percent.
4 0
4 years ago
Let m = 6x + 5.
arsen [322]

We have been given that m=6x+5. We are asked to write (6x + 5)^2-10 =-18x-15 in terms of m.

First of all, we will factor -3 from right side of equation as:

(6x + 5)^2-10 =-3\cdot 6x-3\cdot 5

(6x + 5)^2-10 =-3( 6x+5)

Now we will substitute m=6x+5 in our equation as:

(m)^2-10 =-3(m)

m^2-10 =-3m

Upon adding 3m on both sides, we will get:

m^2+3m-10 =-3m+3m

m^2+3m-10 =0

Therefore, the equation m^2+3m-10 =0 is equivalent to (6x + 5)^2-10 =-18x-15 in terms of m.

5 0
3 years ago
(3x2 – 2) + (2x2 - 6x + 3)<br> Simplified?
vlabodo [156]

Answer:

3x^2-2+2x^2-6x+3=5x^2-6x+1

Factor: 5x^2-5x-x+1=5x(x-1)-1(x-1)=5x-1(x-1)

Step-by-step explanation:

If you have answer choices, the answer would be 5x2 − 6x + 1.

5 0
4 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS!!!
Gre4nikov [31]
Angle 1=180-90-48 =42
Angle 2=180-42 =138
Angle 3= angle 1
Angle 4= angle 2
Angle 5 = 180-72-42=66
8 0
3 years ago
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