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3 years ago

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2.) What is the solution of the system? Use the elimination method. −4x+y=−6 8x−2y=14 A. The only solution is (0, −32) . B. The

only solution is (0, −6) . C. There is an infinite number of solutions. D. There is no solution

1 answer:

KengaRu [80]3 years ago

8 0

There is no solution. When you solve the X's cancel and that means there is no solution

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To add 20.4 + 3.75 + 4.25, Crystal first added 3.75 and 4.25. Which property did Crystal use to add mentally?

Black_prince [1.1K]

Answer:

A) Associative Property of Addition

Step-by-step explanation:

<u><em>Associative Property of Addition</em></u>

Let A, B and C be any three real numbers

A+(B+C) = (A+B) + C

Given data

(20.4 + 3.75) + 4.25 = 20.4 + (3.75 + 4.25)

= 20.4 + 8.0

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3 years ago

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Answer:

D

Step-by-step explanation:

if x=5 then,

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3 years ago

The Mean Corporation's statisticians would like to construct a hypothesis test for the mean annual profit (μ) earned by health-d

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Missing Part of Question

Juice that is opened. It is known that the annual profits earned by health-drink franchises has a population standard deviation of $8,700

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Answer:

z = 1.157

Step-by-step explanation:

Given

Annual profit as calculated = $90,300.

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3 years ago

Daniel wants to ship a set of golf clubs and several boxes of golf balls in a box that can hold up to 20 pounds. If the set of c

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Answer:

Step-by-step explanation:

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3 years ago

Help me please please

snow_lady [41]

Answer:

Step-by-step explanation:

Number 2 first:

See the graph below for a hint. (Do you know how to use Desmos ?)

factoring seems to make no sense for $y =-x^{2} +2x +4$ but "guess and check" seems to work. I tried 4 for x, but that proved false. 3 for x made sense. You get $-3x^{2} +2(3) +4 =y$ so -9 +6 +4 = 1 is true. So (3,1)

x+y=4 becomes 3 + 1 = 4 Also true

According to the graph, (0,4) would also be a solution, so (3,1) and (0,4)

Part 1:

Factor $x^{2} +4x +3$ as $(x + 3)(x + 1)$ set each equal to 0 and get

x = -3 and x = -1 so the solutions seem be (-3,0) and (-1,0)

y = 2x + 6 factors to 2(x +3)

(-1,0) doesn't work!

But Desmos shows something else as a solution set for both:

(1,8)

y=2x+6 substitute values 8=2(1) +6 8=2+6 True

y = $x^{2} +4x +3$ . Substitute values $8 =1^{2} +4(1) +3$ 8= 1+4+3 True

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3 years ago