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Sindrei [870]
3 years ago
7

9=7+a a+8=b+5 value of b

Mathematics
1 answer:
kvv77 [185]3 years ago
5 0
B is 5, you can solve this by first finding the value of a, which is 2, and then plug it into the other equation. 8+2=10 so we must also make the other side 10. We then do 10-5=5, 5 is the value of b
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tino4ka555 [31]

Answer:

2x + 4

Step-by-step explanation:

Let R = Ralph's age

and x = Sarah's age

          Then Ralph's age in 4 years = R + 4

       and Sarah's age in four years = x + 4

Thus,                                       R + 4 = 2(x + 4)

Distribute the 2                      R + 4  =     2x + 8

Subtract 4 from each side     R        =     2x + 4

Ralph's age is 2x + 4.

3 0
4 years ago
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5 0
3 years ago
Suppose two lines are parallel.
mylen [45]
<h3>3 Answers: Choice A, Choice B, Choice E</h3>

============================================================

Explanation:

Let's go through each answer choice one by one to see if it's true or false.

  • A) This is true. Parallel lines have equal slopes, but different y intercepts.
  • B) This is true because of the corresponding angles theorem.
  • C) This is false. The statement applies to perpendicular lines, rather than parallel ones.
  • D) This is false in general. The only time it's true is when the consecutive interior angles are 90 degrees each. Otherwise, the statement is false.
  • E) This is true. Let's say we drew any diagonal line we wanted. Now imagine picking a point on that line and shifting it up 5 units. Do this for another point and draw a line through the two separated points. This forms a parallel line. The upper line has been shifted up 5 units compared to the lower line.
  • F) This is false in general. It's only true when both alternate interior angles are 90 degrees each; otherwise, it is false.
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3 years ago
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Juli2301 [7.4K]

Answer:

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Step-by-step explanation:11x3=33 meaning 11=10000.

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HELP <br> Which equations have exactly one y-value for any given x-value? Select all that apply.
makvit [3.9K]

Answer:

I believe its A. y=-x C and D.

Please correct If I am wrong Please and thank you

Step-by-step explanation:

3 0
3 years ago
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