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wariber [46]
3 years ago
10

How do you solve, not just the answer PLEASE -2r-4=3r+16

Mathematics
2 answers:
geniusboy [140]3 years ago
8 0

-2r-4=3r+16\ \ \ |+4\\\\-2r=3r+20\ \ \ |-3r\\\\-5r=20\ \ \ \ |:(-5)\\\\r=-4

Answer: r = -4

Nonamiya [84]3 years ago
6 0

Isolate the variable "r". Add 2r to both sides, while subtracting 16 from both sides. You will be left with -20=5r. Then you need to divide 5 from both sides. Your answer will be -4=r.

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What is 12 5​ as a mixed number in simplest form?<br> 25
san4es73 [151]

Answer:

5−4+4=16+4

Step-by-step explanation:

8 0
2 years ago
Lian needs to solve the quadratic equation: x^2 - 4x - 2 = 0. Which statement about how Lian should solve this equation is true?
Ulleksa [173]

Answer:

x = 4.45 or x = - 4.45

Step-by-step explanation:

Here are the steps:

Substitute the values,

4+\sqrt{-4^2-4(1*-2)} ÷ 2 × 1

x = 2 ± √6

x = 4.45 or x = - 4.45

<em>good luck, i hope this helps :)</em>

5 0
3 years ago
Read 2 more answers
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zimovet [89]
70 / 35 = 2
So the 70 pound dog weights double the weight of the 35 pound dog, so he will eat twice as much.

2 x 2.5 = 5 cups

Meaning he will eat 5 cups of dry dog food a day.

By the same logic a 140 pound dog would have to eat twice what a 70 pound dog eats, that is 10 cups of dry dog food a day, so 7 1/2 cups are not enough.

Challenge: per pound a dog eats more than a cat. Since you know a 140 pound dog eats 10 cups, you can dive 140 by 10, to find out that each cup feeds 14 pounds, so half a cup would be the amount of food to feed a 7 pound dog, meaning that a dog weighing 1 pound less than a 8 pound cat would need the same amount of food, so it eats more than a cat.

8 0
3 years ago
Find The Area Of The Shape Shown Below
Vesnalui [34]

Answer:

<u>32</u>

Step-by-step explanation:

I proceeded to divide the shape up into 2 triangle and 1 square. The added sum of the 2 divided triangles is 16 and the square is 16. Add those to to get <u>32</u>.

The following shape is a trapezoid

area formula:

A=

A=

A= (4)(12+4)

A= (4)(16)

A= (4)(16)

A= (64)

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Also, is that Khan Academy?

8 0
3 years ago
Read 2 more answers
"Find x" I managed to get -6/2c, I just want to double check if that is correct
Soloha48 [4]

- 6/2c is the correct solution

collect like terms : 3cx - cx = 2cx

hence 2cx = - 6

dividing both sides by 2c gives x = - 6/2c


7 0
3 years ago
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