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babunello [35]
3 years ago
5

(Apex!) Select the two values of x that are roots of this equation 3x-5=-2x^2

Mathematics
1 answer:
katovenus [111]3 years ago
4 0

Answer:

B and D

Step-by-step explanation:

Write as a quadratic

-2x² - 3x + 5 = 0

Factor

-2x² - 5x + 2x + 5 = 0

-x(2x + 5) + 1(2x + 5) = 0

(1 - x)(2x + 5) = 0

To make the equation 0, x is either 1 or -5/2.

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Between which two consecutive whole numbers does 86 lie? Fill out the sentence below to justify your answer and use your mouse t
Sveta_85 [38]

\boxed{9}\rule[0.35em]{10em}{0.25pt}\stackrel{\sqrt{86}}{\approx 9.27}\rule[0.35em]{17em}{0.25pt}\boxed{10}

5 0
2 years ago
Could anyone help me on number 3?
xeze [42]

Answer:

n = 2m-4

Step-by-step explanation:

n+2/m-1=2

n+2=2(m-1)

n+2=2m-2

n=2m-2-2

n=2m-4

6 0
3 years ago
I need help on problem number 6 and 8 plzzzz
katrin [286]
For 6 I think it was B I am not so sure. Its been a long time since i did triangles
3 0
3 years ago
Read 2 more answers
(-3,20) (3,0) (18,20) (13,18) is it a function
S_A_V [24]

Answer: No

Step-by-step explanation: The table does not have a function rule that is linear, quadratic, or cubic.

4 0
3 years ago
The revenue​ (in millions of​ dollars) from the sale of x units at a home supply outlet is given by ​R(x)equals=0.210.21x. The p
Natalka [10]

Answer: a) c(x) = 0.124x + 1.1, b) 13 units

Step-by-step explanation: Revenue function = R(x) = 0.21x

Profit function = p(x) = 0.086 - 1.1

Cost function = c(x) =?

A)

Recall that profit = total revenue - total cost

Hence, total cost = total revenue - profit

c(x) = 0.21x - (0.086x - 1.1)

c(x) = 0.21x - 0.086x + 1.1

c(x) = 0.124x + 1.1

B)

Break even point is the point where total revenue equals total cost

R(x) = c(x)

0.21x = 0.124x + 1.1

0.21x - 0.124x = 1.1

0.086x = 1.1

x = 1.1/0.086

x = 12.79 which is approximately 13 units

4 0
3 years ago
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