Simplify -2[9 - (x + 7)]

Answers

Answer 1

Answer: Hey there! $-2[9 - (x + 7)] \n \n \n( -2(9) + -2(-x) + -7) \n \n -2(9) +-2(-x) + -2 (-7) \n \n \n -2(9) = -18 \n-2(-x) = 2x \n -2(-7) = 14 \n \n \n -18 + 2x + 14 \n \n \n \n Combine \n like\n terms: -18 , 14 \n \n \n -18 +14 = -4 \n \n \n \n Answer: 2x - 4 \n \n \n \n \n \n Good\n luck \n on \n your \n assignment \n and \n enjoy \n your \n day!$

~ $LoveYourselfFirst:)$

Answer 2

Answer:

-4x+2

Step-by-step explanation:

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What are the solutions to the system of equations?

Answers

Answer:

A. $(1,5)$ and $(5,13)$

Step-by-step explanation:

We have been given a system of equations. We are asked to find the solution of our given system.

$\left \{ {{y=x^2-4x+8}\atop {y=2x+3}} \right.$

Equate both equations:

$x^2-4x+8=2x+3$

$x^2-4x-2x+8-3=2x-2x+3-3$

$x^2-6x+5=0$

Split the middle term:

$x^2-5x-x+5=0$

$x(x-5)-1(x-5)=0$

$(x-5)(x-1)=0$

Use zero product property:

$(x-5)=0\text{ (or) }(x-1)=0$

$x=5\text{ (or) }x=1$

Now, we will substitute both values of x, in our given equation to solve for y.

$y=2x+3$

$y=2(1)+3$

$y=2+3$

$y=5$

One solution: $(1,5)$

$y=2x+3$

$y=2(5)+3$

$y=10+3$

$y=13$

2nd solution: $(5,13)$

Therefore, option A is the correct choice.

Answer:

Step-by-step explanation:

Given the 2 equations

y = x² - 4x + 8 → (1)

y = 2x + 3 → (2)

Since both express y in terms of x we can equate the left sides, that is

x² - 4x + 8 = 2x + 3 ( subtract 2x + 3 from both sides )

x² - 6x + 5 = 0 ← in standard form

(x - 1)(x - 5) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 1 = 0 ⇒ x = 1

x - 5 = 0 ⇒ x = 5

Substitute these values into (2) for corresponding values of y

x = 1 : y = (2 × 1) + 3 = 2 + 3 = 5 ⇒ (1, 5)

x = 5 : y = (2 × 5) + 3 = 10 + 3 = 13 ⇒ (5, 13)

Solutions are (1, 5) and (5, 13)

10 = z/2 + 7
Help please..??

Answers

10 = z/2 + 7

10 - 7 = z/2 + 7 - 7

3 = z/2

3 * 2 = z/2 * 2

6 = z

$10 = (z)/(2) + 7\n\n3 = (z)/(2)\n\n\boxed{\bf{z = 6}}$

A bag contains 5 red marbles and 7 blue marbles. You randomly pick a marble and then pick a second without returning the marbles to the bag. Both marbles are red.

Answers

Probability(both marbles are red) = 5/12 * 4/11 = 20/132

= 5/33 Answer

What's the missing term and missing coefficient of (6a - blank )5a= blank a^2 - 35a

Answers

first blank = 7 (because 7*5a=35a)
second blank = 30 (because 6a*5a=30a^2)

3 names for a square

Answers

Three names for a square are:
1) parallelogram because it has 2 pairs of parallel sides.
2) polygon because it is a closed figure with at least 3 sides.
3) quadrilateral because it has 4 sides.

rectangle
qauterlagram
pallagam

Please help me..Its due 2mrw..

Answers

Answer:

a. 30%

b. 30

Step-by-step explanation:

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