Solve the Equation 70 = -7(-2 - 2z)
z = 4
z = -28
z = -112
z = 784

Answers

Answer 1

Answer: 70 = -7 (-2 - 2z)

First, divide both sides by -7. / Your problem should look like: $(70)/(-7)$ = -2 - 2z
Second, simplify $(70)/(-7)$ to $- (70)/(7)$ / Your problem should look like: $-(70)/(7)$ = -2 - 2z
Third, simplify $(70)/(7)$ to get 10. / Your problem should look like: -10 = -2 - 2z
Fourth, add 2 to both sides. / Your problem should look like: -10 + 2 = -2z
Fifth, simplify -10 + 2 to get -8. / Your problem should look like: -8 = -2z
Sixth, divide both sides by -2. / Your problem should look like: $(-8)/(-2)$ = z
Seventh, simplify $(-8)/(-2)$ to $(8)/(2)$ / Your problem should look like: $(8)/(2)$ = z
Eighth, simplify $(8)/(2)$ to get 4. / Your problem should look like: 4 = z
Ninth, switch your problem around. / Your problem should look like: z = 4

Answer: z = 4

Answer 2

Answer:

The solution of expression is,

⇒ z = 4

We have to give that,

An expression to solve is,

⇒ 70 = - 7 (- 2 - 2z)

Now, Simplify the expression as,

⇒ 70 = - 7 (- 2 - 2z)

Divide both sides by 7,

⇒ 70/ 7 = - 7 (- 2 - 2z)/7

⇒ 10 = - 1 (- 2 - 2z)

Apply distributive property,

⇒ 10 = 2 + 2z

Subtract 2 on both sides,

⇒ 10 - 2 = 2z

⇒ 2z = 8

Divide on both sides by 2,

⇒ z = 8/2

⇒ z = 4

Therefore, The solution is,

⇒ z = 4

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9/11= ?/22 need help please

Zohar is using scissors to cut a rectangle with a length of 5x – 2 and a width of 3x + 1 out of a larger piece of paper. The perimeter of the rectangle is 2(5x – 2) + 2(3x + 1). If x = 4 centimeters, what is the total distance Zohar needs to cut with the scissors?

Answers

The total distance she will need to cut is 62 centimeters. Work shown: 1) simplify original equation- 10x-4+6x+2( 40-4+24+2) 2) solve equation: 36+24+2 3) continue to solve: 38+24= 62. Now you have your answer!!

The total distance that Zohar needs to cut with the scissors is 70cm. The rectangle problem is solved by substituting the value of x in to the equation.

What is the calculation for the above problem?

To get the required distance to be cut, we need to substitute 4 into the equation as the value of x.

Hence,

= 2(5x+2) + 2(3x+1)

= 2(5(4)+2) + 2(3(4)+1)

= 2(20+2) + 2(12+1)

= 2(22) + 2(13)

= 44+26

= 70 cm

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If Julie needs 3 1/4 cups of oatmeal, how many 1/4 cups oatmeal will shw use?

Answers

If Julie needs 3 ¼ cups of oatmeal How many ¼ cups will she uses, Solution: The # of cups she will use = 3 ¼ divide by ¼ 13/4/1/4 = 13/4*4/1 =13 cups

Answer:

Step-by-step explanation:

The correct answer is 3/6

What is the value of the expression 72 – 42?

Answers

Answer:

72-42=30

the correct answer is 30

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Answer:

Step-by-step explanation:

in an equation y varies directly as x varies. if y = 55 when x = 22, what is the value of x when y = 85?

Answers

Answer:

x=34

Step-by-step explanation:

If you put Y and X into a ratio then it will be

5:2

because since their GCF is 11, then we will have to divide both of the numbers by 11.

If y=85 then that means that it was multiplied by 17. If we want them to stay within the same ratio, then we will have to multiply X (2) by 17.

That will get you 34.

If 3x^2-2x+7=0,then (x-1/3)^2= please help with detailed steps because i dont really understand it. I know the answer is -20/9 but please explain

Answers

Answer:

$-(20)/(9)$

Explanation:

A quadratic function is a kind of function with highest degree 2 . Standard form of the quadratic equation : tex]ax^2+bx+c=0[/tex]

Further explanation:

Consider the given quadratic equation : $3x^2-2x+7=0$

First we divide both sides by 3 , we get

$x^2-(2)/(3)x+(7)/(3)=0$ --------(1)

Compare this equation to $x^2+2ax+a^2$ , we have

$2a=(-2)/(3)$

$\Rightarrow\ a=(-1)/(3)$ [divide both sides by 2]

Now using the completing the squares method , Add and subtract $((-1)/(3))^2$ to the left side in (1), we get

$x^2-(2)/(3)x+((-1)/(3))^2-((-1)/(3))^2+(7)/(3)=0$

It can be written as

$(x^2-2((1)/(3))x+(1)/(3))^2)-(1)/(9)+(7)/(3)=0$

Use identity $x^2-2ax+a^2=(x-a)^2$ , we have

$(x-(1)/(3))^2)+(7(3)-1)/(9)=0$

$(x-(1)/(3))^2)+(20)/(9)=0$

Subtract $(20)/(9)$ from both the sides , we get

$(x-(1)/(3))^2)=-(20)/(9)$

Therefore, the value of $(x-(1)/(3))^2)=-(20)/(9)$

Learn more :

brainly.com/question/10449635 [Answered by Calculista]

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Keywords :

Quadratic equation, standard form, completing squares method, Polynomial identities.

For this case we have the following polynomial:

$3x^2-2x+7=0$

To solve the problem, we must complete squares.

The first step is to divide the entire expression by 3.

We have then:

$(3)/(3)x^2-(2)/(3)x+(7)/(3)=0$

The second step is to place the constant term on the right side of the equation:

$(3)/(3)x^2-(2)/(3)x=-(7)/(3)$

The third step is to complete the square:

$(3)/(3)x^2-(2)/(3)x + (-(1)/(3))^2=-(7)/(3)+ (-(1)/(3))^2$

Rewriting we have:

$x^2-(2)/(3)x + (1)/(9)=-(7)/(3)+ (1)/(9)$

$(x-(1)/(3))^2 = -(20)/(3)$

Answer:

By completing squares we have:

$(x-(1)/(3))^2 = -(20)/(3)$

Use a factor tree to find the prime factorization of 164

Answers

On the first hand, 164 is not a prime number. Prime numbers are numbers that can only be divided by 1 or itself which is also greater than 1 thus;
Prime divisor of 164= 2,2,41 or 2^2 x 41
Here is the factor tree of 164:
164
/     \
2     82
/       \
2      41
Prime factorization of a number determines the set of prime integers multiplied together to make the original number.

Answer:

2 * 2 * 41

Step-by-step explanation:

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