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grigory [225]
3 years ago
9

8.EE.8 help please!!!!!

Mathematics
1 answer:
o-na [289]3 years ago
8 0

Answer:

2x+3y=4

-2x+y=8

4y=12

y=3

2x+3y=4

2x+3(3)=4

2x+9=4

2x=-5

x=-2.5

(-2.5,3)

Step-by-step explanation:

2x+3y=4

-2x+y=8

4y=12

y=3

2x+3y=4

2x+3(3)=4

2x+9=4

2x=-5

x=-2.5

(-2.5,3)

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What are the zeros of the polynomial function f(x)=x3-7x2+8x+16
labwork [276]

Answer: x=4, -1

Step-by-step explanation:

Assuming you meant x^3-7x^2+8x+16, the zeros of the question are x = 4 and -1.

Step 1. Replace f(x) with y.

y = x^3-7x^2+8x+16

Step 2. To find the roots of the equation, replace <em>y</em> with 0 and solve.

0 = x^3-7x^2+8x+16

Step 3. Factor the left side of the equation.

(x-4)^2 (x+1)=0

Step 4. Set x-4 equal to 0 and solve for <em>x</em>.

x-4=0

Step 5. Set x+1 equal to 0 and solve for <em>x</em>.

x=-1

The solution is the result of x-4=0 and x+1=0.

x=4,-1

5 0
3 years ago
Last year, the numbers of skateboards produced per day at a certain factory were normally distributed with a mean of 20,500 skat
BartSMP [9]
Let x be a random variable representing the number of skateboards produced
a.) P(x ≤ 20,555) = P(z ≤ (20,555 - 20,500)/55) = P(z ≤ 1) = 0.84134 = 84.1%

b.) P(x ≥ 20,610) = P(z ≥ (20,610 - 20,500)/55) = P(z ≥ 2) = 1 - P(z < 2) = 1 - 0.97725 = 0.02275 = 2.3%

c.) P(x ≤ 20,445) = P(z ≤ (20,445 - 20,500)/55) = P(z ≤ -1) = 1 - P(z ≤ 1) = 1 - 0.84134 = 0.15866 = 15.9%
5 0
4 years ago
1. A company produces two types of nutritional supplements; Energize and Excel. Energize contains 26 mg of vitamin A, 42 mg of v
geniusboy [140]

Answer:

1)A) Minimize C = 40x + 100y.

2) d) 7x + 8y ≤ 190, 5x + 4y ≤ 22, x ≥ 0, y ≥ 0.

3) B) Min C = 295x + 416y; s.t 23x + 15y ≥ 154, 17x + 25y ≥ 140, x ≥ 0, y ≥ 0.

Step-by-step explanation:

1) Energize pills cost 40 cents each, while Excel pills cost 100 cents each. If x represent the energize pills and y represent the excel pills, the objective function would be:

minimize cost = cost of energize pill + cost of excel pill

Minimize cost = 40x + 100y

2) Let x = the number of mountain bikes they produce, and let y = the number of racing bikes they produce.

7 hours of assemble time to produce a mountain bike and 8 hours of assemble time to produce a racing bike. Since the company has at most 190 hours for assemble time, it can be represented as:

7x + 8y≤ 190

5 hours of mechanical tuning to produce a mountain bike and 4 hours of mechanical tuning to produce a racing bike. Since the company has at most 22 hours for mechanical tuning, it can be represented as:

5x + 4y ≤ 22

Also assemble time and mechanical time must be greater than 0, hence:

x ≥ 0, y ≥ 0

3) The fieldwork constraint can be represented as:

23x + 15y ≥ 154

The time to be spent at university research center can be represented as:

17x + 25y ≥ 140

Both fieldwork time and time spent at university research center mut be greater than 0, hence:

x ≥ 0, y≥ 0

The cost equation is:

Minimize cost = 295x + 416y

5 0
3 years ago
Simplify the sum. (8u3 + 8u2 + 6) + (4u3 – 6u + 3)
Sladkaya [172]
-Hai There! :3


-Your answer and work for the question above should look like this: 


8u3+8u2+6+4u3−6u+3
=8u3+8u2+6+4u3+−6u+3
=8u3+8u2+6+4u3+−6u+3
=(8u3+4u3)+(8u2)+(−6u)+(6+3)
=12u3+8u2+−6u+9


-Remember to mark this answer as Brainliest! Glad I could help!




A҉z҉u҉i҉e҉x҉
7 0
3 years ago
Read 2 more answers
Could someone help me with this? Please provide an explanation! Thank you!
Brrunno [24]

Answer:

if you are solving for x then the answer would be -17/6 or -2 5/6 (mixed number form)

Step-by-step explanation:

6 0
3 years ago
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