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3 years ago

Inga is solving 2x2 + 12x – 3 = 0. Which steps could she use to solve the quadratic equation? Check all that apply.

2 answers:

8 0

The answers are:
1. 2(x2 + 6x + 9) = 3 + 18
2. 2(x2 + 6x) = 3

Let's take a look at the first choice:
2(x² + 6x + 9) = 3 + 18
Now, we will multiply 2 with every member of the other multiplier on the left side:
2·x² + 2·6x + 2·9 = 3 + 18
2x² + 12x + 18 = 3 + 18
2x² + 12x - 3 = 18 - 18
2x² + 12x - 3 = 0

Let's take a look at the second choice:
2(x² + 6x) = 3
Now, we will multiply 2 with every member of the other multiplier on the left side:
2·x² + 2·6x = 3
2x² + 12x = 3
2x² + 12x - 3 = 0

hram777 [196]3 years ago

8 0

Answer:

1,3,4

Step-by-step explanation:

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What is the solution of 3(x-1)=2x+5

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3( x - 1 ) = 2 x + 5

Expand 3(x-1) :

3*x - 3 x 1

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Add 3 both sides :

3 x - 3 + 3 = 2 x + 5 + 3

3 x = 2 x + 8

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3 years ago

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Soloha48 [4]

Many people find this to be a complicated topic.
Please try to follow my steps as I solve the problem
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The absolute value of any number is
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6 0

3 years ago

Solve the system be either substitution or elimination 3x-5y=21 and 2x+y=1

IRISSAK [1]

Answer:

(2,-3)

Step-by-step explanation:

I used substitution and rearranged the second equation to y=-2x+1. Then I replaced the y in the first equation with -2x+1. So, I got 3x-5(-2x+1)=21. When you solve that you get 13x=26 or x=2. Then you replace x with 2 in either equation and end up with y=-3.

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4 years ago

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Each pitcher of podwer smoothie that Ginger makes has 2 scoops of pineapple,3 scoops of strawberries,1 scoop of spinach and 1 sc

WITCHER [35]

Answer:

She will use 49 scoops

Step-by-step explanation:

* Lets explain how to solve the problem

- Each pitcher of powder smoothie that Ginger makes has:

# 2 scoops of pineapple ⇒ 2 p

# 3 scoops of strawberries ⇒ 3 s

# 1 scoop of spinach ⇒ 1 sp

# 1 scoop of kale ⇒ 1 k

- She makes 7 pitchers of powder smoothies

* Lets write an expression for the number of scoops of one pitchers

powder smoothie

∵ 1 pitcher of powder smoothie contains 2 p scoops, 3 s scoops,

1 sp scoop and 1 k scoop

∴ The number of the scoops = 2 + 3 + 1 + 1 for one pitcher

∵ She makes 7 pitchers of powder smoothie

- Multiply the scoops of each type by 7

∴ The total number of scoops = (7 × 2) + (7 × 3) + (7 × 1) + (7 × 1)

- By multiply the numbers in the parentheses

∴ The number of total scoops = 14 + 21 + 7 + 7

∴ The number of total scoops = 49

* She will use 49 scoops

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4 years ago

G (1) = ? Evaluate piecewise functions

kobusy [5.1K]

Answer:

g(1) = 1

Step-by-step explanation:

g(1) with x = 1 corresponds to x ≠ - 2, - 1 with g(x) = x³ - x² + 1 , then

g(1) = 1³ - 1² + 1 = 1 - 1 + 1 = 1

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3 years ago

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