5(3x+4)-2x=7x-3(-2x+11)

Answers

Answer 1

Answer: 5(3x+4)-2x=7x-3(-2x+11)
15x+20-2x=7x+6x-33
13x+20=13x-33
+33 +33
13x+53=13x (divide by 13)
x=53

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What are two different methods you can use to figure out what 34% of 120 is? (Explain both methods and show your setup of each) Do not solve

Answers

You can use the proportion $(is)/(of)$ or $(part)/(whole)$ = $(percent)/(100)$ , where you fill in what you know, crossmulitply, and solve for x. You can also write it as an equation, where of=mulitply and is=equal to, and the percent is expressed as a decimal. Your two different equations would be .34x120=x and $(x)/(120)$ = $(34)/(100)$

the answer would be 40.8. simply u take 34 multiply by 120 the u divide the answer by 100 to 40.8

PLZ ANWSER GEOMETRY

Answers

Answer:

Step-by-step explanation:

5) 108

6) 55

7) 49

8) 65

Complete the following proof.Given: m ∠XOY = m ∠WOV
m YZ = m ZW
Prove: m XZ = m ZV

Answers

Answer:

Step-by-step explanation:

m ∠XOY = m ∠WOV

so, m XY = m WV --- (i)

{ If angle subtended by two arcs at the center are equal, then length of arc are equal}

m YZ = m ZW ------- (ii) {given}

Add (i) and (ii)

XY + YZ = WV + ZW

XZ = ZV

Hence proved.

Answer:

Given that m ∠XOY = m ∠WOV then m XY = m WV, because central angles are equal to arcs.

Given: m YZ = m ZW

The addition of arcs XY and YZ make arc XZ, that is: m XY + m YZ = m XZ

The addition of arcs ZW and WV make arc XZ, that is: m WV + m ZW = m ZV

Then, m XZ = m ZV

carter drank 15.75 gallons of water in 4 weeks.he drank the same amount of water each day.about how many days altogether will it take him to drink 20 gallons?

Answers

To answer this first lets see how many gallons of water he drinks per week.

15.75 ÷ 4 = 3.9375

Now lets divide to see how much he drinks each day.

3.9375 ÷ 7 = 0.5625

20 ÷ 0.5625 = 35.5555...

So, it will take Carter about 35 and a half days to finish 20 gallons.

Hope I helped ya!!

Which method is the most efficient method to use to solve x^2+4x+3=0

Answers

Answer:

Factoring

Step-by-step explanation:

To solve the equation $x ^ 2 + 4x + 3 = 0$ , you must apply the factoring method.

You must find two real numbers b and c such that:

$b + c = 4$

and

$b(c) = 3$

Then the expression:

$x ^ 2 + 4x + 3 = 0 = (x + b)(x + c)$

You can prove that:

$b = 3\nc = 1$

$x ^ 2 + 4x + 3 = 0 = (x + 3)(x + 1)$

$(x + 3)(x + 1) = 0$

$x +3 = 0$ or $x + 1 = 0$

$x = -3$ or $x = -1$

X will be -1 and -3!

A box contains 500 marbles. The result of 20 marbles pulled at random from the box is given below.• 5 red marbles
• 6 blue marbles
• 3 green marbles
• 4 black marbles
• 2 yellow marbles

Based on this information, how many black marbles could be expected in the box?

Answers

Answer:

100 black marbles

Step-by-step explanation:

The experimental probability of a black marble is

P(black) = 4/20 = 1/5

We expect that out of the 500 marbles in the box, 1/5 of them are black

1/5 (500) = 100

There should be 100 black marbles

100 black marbles can be pulled

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