Solve this please, and quick

Mathematics

2 answers:

rosijanka [135]3 years ago

8 0

Error: They subtracted 9x from both sides when they should have subtracted 12. You can’t subtract unlike terms
Correct: x=-5/16
Subtract 12 from both sides to get -5 on the left and add 7x and 9x to get 16x. Divide both sides by 16 to isolate x.

Viefleur [7K]3 years ago

3 0

Answer:

3.2

Step-by-step explanation:

7x + 12 + 9x = 7

16x + 12 = 7

- 12 -12

16x = -5

16 divided by -5 is 3.2

x = 3.2

You might be interested in

Please help I dont know what to do. I have already done the graph but all I need is x,y box and equation

Sever21 [200]

4 is the answer hope this helps

5 0

2 years ago

What does the product (-5-2i)(3+7i) equal

Marina CMI [18]

This in what I got:
(-7i)(10i)
-70i

8 0

3 years ago

I don't understand rational and irrational numbers

PSYCHO15rus [73]

A rational number is a number which can be expressed as a fraction whose numerator and denominator are both integers and whose denominator is not equal to zero. Rational numbers include all integers, fractions, mixed numbers, and some decimal numbers.

Note : All terminating and repeating decimal numbers are rational numbers because those numbers can be expressed as a fraction. On the other hand, a non repeating number and non terminating decimal, like square root of 2, is an irrational number.

$\dfrac{7}{16} \ as \ a \ decimal = 0.4375$