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Nostrana [21]
3 years ago
13

I need the answer please help me straight away!!!

Mathematics
1 answer:
Neko [114]3 years ago
8 0

Answer:

15

Step-by-step explanation:

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If RS=3x + 1, ST= 2x - 2, and RT=64 find the value of x
Ulleksa [173]
For this question, we can assume that RS + ST = RT.  So now, we just have to plug in the expressions for these lengths, and solve the equation.

(3x+1) + (2x-2) = 64

Because we are only dealing with one operation, the parentheses aren't necessary.

3x + 1 + 2x - 2 = 64

Next, we should combine like terms on the left side of the equation. We know that 3x + 2x = 5x, and that 1 - 2 = -1.

5x - 1 = 64

The goal of an equation is to get the variable alone.  To do this, we have to get rid of the -1 on the left side of the equation.  So, we are going to add 1 to both sides of the equation, to cancel out the -1 on the left side.

5x = 65

Finally, we are going to divide both sides by 5, as this is the inverse operation of multiplication, which is how the 5 and the x are connected.

x = 13

Therefore, the value of x is 13.
3 0
3 years ago
Bernita and Derek each plot a number on a number line. The numbers are unique but have the same absolute value. The sum of the a
diamong [38]
The correct answer is B. -75 and 75.

Absolute value means the positive value of a number. Absolute value of -75 is 75. Absolute value of 75 is 75.

75 + 75 = 150.
3 0
3 years ago
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A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of
lesya692 [45]

Answer:

first car = 35, second car= 15

Step-by-step explanation:

40x+15y=1625

x+y=50

multiplying the 2nd by -15 and add the 2 equations, we get x= 35 and by substituting on second equation we get y= 15

4 0
2 years ago
The point (2,-5) is on the graph of which equation?
elena55 [62]
The answer is A,
if you plug in the points of (2,-5) into
y=x-7
-5=2-7
-5=-5
so the equation is true
8 0
3 years ago
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In a school contest, each student draws a number from 1 to 5 out of a large basket. The outcomes are shown in the table below.
12345 [234]

Answer:

The answer is 88/407

Step-by-step explanation:

Their are 5 possible outcomes 1/83, 2/79, 3/88, 4/72, and 5/85. Trust me its 88/407

4 0
3 years ago
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