Enter an equation that can be used to find x. (Picture below)The equation ____ can be used to find x.

Answers

Answer 1

Answer:

(2x+1)+89=180. 180 is the angle of a straight line. Set your two known sides equal to 180 and solve for x if needed.

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An open box will be made from a rectangular piece of cardboard that is 8 in. by 10 in. The box will be cut on the dashed red lines, removing the corners, and then folded up on the dotted lines. The box needs to have the MAXIMUM volume possible. How long should the cuts be?A) 1.5 in.
B) 5.8 in.
C) 52 in.
D) 80 in.

Answers

Answer:

correct answer is A

Step-by-step explanation:

1.5 in

b) I think because it's 8 by 10

What does diametor mean?

Answers

diameter means from one side of a circle to the other in a straight line.

A straight line passing side to side

0.88 as a fraction in simplest form

Answers

Answer:

22/25

Step-by-step explanation:

0.88×100/1×100=88/100

88÷4/100÷4=22/25

Answer: 22/25

Step-by-step explanation:

i took the test

If you give me 70 coins I will have three times as much money as you, but if I give you 70 coins, then you will have five times as much as me. How many coins do we each have?

Answers

Answer:

I have 110 coins, you have 130 coins

Step-by-step explanation:

I have x coins and you have y coins.

According to question we set the following equations.

If you give me 70 coins I will have three times as much money as you:

x + 70 = 3(y - 70) ⇒ x + 70 = 3y - 210 ⇒ x = 3y - 280

If I give you 70 coins, then you will have five times as much as me:

y + 70 = 5(x - 70) ⇒ y + 70 = 5x - 350 ⇒ y = 5x - 420

Solve by substitution:

y = 5(3y - 280) - 420
y = 15y - 1400 - 420
15y - y = 1820
14y = 1820
y = 1820/14
y = 130

Find the value of x:

x = 3*130 - 280
x = 390 - 280
x = 110

What is the name of the guy who invented the multiplication tables?

Answers

Hello,

It seems that multiplication tables were invented by Pythogore .

Later in the middle ages , a abacus has been invented by a guy who where living near my house : Gerbert d'Aurillac who became pape (Sylvestre 2 ,945-1003).

I’m having a hard time understanding substitution. Please help!