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lorasvet [3.4K]
3 years ago
13

10(x - 5) = -80 i don't understand math that well lol

Mathematics
2 answers:
Alex_Xolod [135]3 years ago
8 0
10(x-5)=-80
10x-50=-80
    +50   +50
10x=-30
/10   /10 

x=-3
ziro4ka [17]3 years ago
5 0
All you have to do is multiply 10 by x and -5. So 10x+-50= -80. Then you add 50 to -80 to get 10x= -30. Then divide -30 and 10. The answer gives you x= -3
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Simplify the expression. Use standard polynomial format.<br> x(2x + 3) + (x - 3)(x - 4)
timofeeve [1]

Answer:

x(2x + 3) + (x - 3) (x - 4) = 3x²- 4x + 12

Step-by-step explanation:

<em>Expand:</em>

x(2x + 3): 2x² + 3x

2x² + 3x + (x - 3) (x - 4)

<em>Expand</em>:

(x - 3) (x - 4):  x²- 7x + 12

2x² + 3x + x²- 7x + 12

<em>Simplify:</em>

2x² + 3x + x² - 7x + 12:  3x² - 4x + 12

= 3x² - 4x +12

5 0
3 years ago
A human society has 73 dogs and cats to be adopted. the number of cats is 10 more than twice the number of dogs. Write a system
viktelen [127]
Total: 73
dogs: x
cats: 2x+10

2x+10+x=73
3x+10=73
3x=63
x=21

dogs: x
dogs: 21

cats: 2x+10
cats: 52

Check answer:
cats+dogs=73
52+21=73

There's no need for a system of linear equations if you were to solve a real life problem like this. In calculus, they don't give a rat about HOW you get your answer to an easy algebra 1 equation, as long as you used one of the correct methods and got the right answer.

Best of luck my friend. :)
8 0
3 years ago
7a-11=-2(3a-1) what is the work and answer
Anni [7]
The work is on the picture attached, but a = 1
Hope this helps!!

3 0
3 years ago
I need help im not understanding how to do this
galina1969 [7]

Answer:

(c, b)

Step-by-step explanation:

Add the coordinates together and divide by 2

x coordinates: 2c + 0 = 2c, divided by 2 = c

y coordinates: 0 + 2b = 2b, divided by 2 = b

3 0
2 years ago
Read 2 more answers
Bryce tried to solve an equation step by step.
Aloiza [94]

$c=\frac{1}{3}

Solution:

Given equation is \frac{8}{3}=3c+\frac{5}{3}.

To solve the equation by step by step.

Step 1: Given

$\frac{8}{3}=3c+\frac{5}{3}$

Step 2: Combine like terms together.

Plus symbol changed to minus when the term goes from right to left (or) left to right of the equal sign.

$\frac{8}{3}-\frac{5}{3}=3c$

Step 3: Subtract the fractions in the left side.

$\frac{3}{3}=3c$

⇒ 1=3c$

Step 4: Divide both side of the equation by 3, we get

$\frac{1}{3} =\frac{3c}{3}$

$\frac{1}{3} =c$

Hence, the answer is c=\frac{1}{3}.

8 0
3 years ago
Read 2 more answers
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