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lara31 [8.8K]
3 years ago
13

Solve for the unknown variable "x" in the following linea equation: 2 ( 2x + 20) = 80 X =

Mathematics
1 answer:
Stella [2.4K]3 years ago
4 0

Step-by-step explanation:

2(2+20)=80

4+40=80 (Distribute)

4+40-40=80-40(Subtract from both sides of the equation)

4=40(Simplify)

4/4=404/4(Divide both sides of the equation by the same term to get x=10)

=10

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Prove the following equation has no solutions.<br><br> 13t+6=12+13t
Alex73 [517]
13t-13t=0
so your left with 
6=12 
which is a false statement which makes this equation have no solutions

8 0
3 years ago
Which property of equality is used in solving x + 8 = 9?
stiv31 [10]

Answer:

Subtraction Property of Equality.

Step-by-step explanation:

To solve x + 8 = 9, you need to subtract 8 from both sides of the equation. So, you would be using the Subtraction Property of Equality.

Hope this helps!

8 0
3 years ago
Read 2 more answers
Si el radio de un circulo es de 3 pulgadas. cual es el area del circulo?<br>​
nata0808 [166]

Answer:

I don’t know

Step-by-step explanation:

4 0
3 years ago
Your friend says that the solutions to the inequality 5x - 14x &lt; - 18 are x ≤2. Solve the inequality correctly. What error di
katrin2010 [14]
<h3>Answer:  x > 2</h3>

Work Shown:

5x - 14x < - 18

-9x < - 18

x > -18/(-9)

x > 2

The inequality sign flips when dividing both sides by a negative number.

Here's another approach you could take.

5x - 14x < - 18

-9x < -18

0 < -18+9x

18 < 9x

9x > 18

x > 18/9

x > 2

It's a slightly longer pathway, but it avoids a sign flip when you divide both sides by the positive number 9.

The sign flip happens two steps earlier when going from 18 < 9x to 9x > 18. In other words, A < B is the same as B > A.

6 0
2 years ago
ILL GIVE BRAINLIEST!!
densk [106]

Answer:

P(3 , 0)

Step-by-step explanation:

(x₁, y₁) = A(-3,-3)    ;(x₂ , y₂) B(5, 1)

m : n = 3 : 1

P \left( \dfrac{mx_{2}+nx_1}{m+n},\dfrac{my_{2}+ny_{1}}{m+n} \right)\\\\P \left (\dfrac{5*3+(-3)*1}{3+1},\dfrac{3*1+1*(-3)}{3+1} \right)\\\\\\=P \left(\dfrac{15-3}{4},\dfrac{3-3}{4} \right)\\\\\\= P \left(\dfrac{12}{4},\dfrac{0}{4} \right)\\\\\\= P\left(3 , 0 \right)

5 0
2 years ago
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