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mariarad [96]
3 years ago
12

How do you check the equation 3x - 7 = 5x + 19

Mathematics
1 answer:
IRINA_888 [86]3 years ago
6 0
How to check an answer is by plugging the answer you got for x into the equation. do u need to know how to get the answer?
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Can someone put a website to help me understand this?
Alenkinab [10]

Answer:

67

Step-by-step explanation:

Since the diagonals in a rectangle are congruent, AC=BD and

7x+18=10x-3

We need to separate x -- to do that, we can first subtract 7x from both sides, resulting in

18=3x-3

Next, add 3 to both sides to get

21=3x

Divide both sides by 3 to get

x=7

Then, we just plug x into 10x-3 to get BD = 7*10-3 = 67

7 0
2 years ago
Which expression best estimates. -18 1/4 ÷ 2 2/3 A. 18÷3 B. -18÷3 C.-18÷(-3) D. 18÷(-3)​
Volgvan

Answer:

the amswer is d hope this helps

3 0
3 years ago
Which term best completes the state all _______ are rectangles A. Parallelograms B.squares C.rhombi D. None of theses
liq [111]

Answer:

The answer is B. squares.

Step-by-step explanation:

All squares are considered rectangles. Not all parallelograms are rectangles, and rhombi are not rectangles.


I hope this helped! :-)

8 0
3 years ago
I need help. i answered this 4 times and i cant figure it out.
Lubov Fominskaja [6]

Answer:

x=55°

Step-by-step explanation:

Add angles together and set to 180°. Solve for x.

5 0
3 years ago
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Yes i did for math can you help
Elena L [17]

Answer:

maybe, whats the question

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