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umka2103 [35]
3 years ago
9

Hi ! can someone help me and tell me if my answers right or wong Thank you

Mathematics
1 answer:
IgorC [24]3 years ago
7 0

Answer: 1.  a) discriminant

              4.  b) No. when < 0 it has no Real solutions

<u>Step-by-step explanation:</u>

All of the other answers are correct.

In the quadratic expression, the solutions are defined by the discriminant (b² - 4ac) as follows:

  • Discriminant < 0:   2 complex solutions (no Real solutions)
  • Discriminant = 0:    1 Real Solution
  • Discriminant > 0:    2 Real solutions

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Pls help I’ll give 23 points
Andrew [12]

Answer:

  • $2594.07

Step-by-step explanation:

  • Principal P = $2250
  • Interest rate r = 2.4% = 0.024 PA compounded
  • Compound number n = 1 (once per year)
  • Time t = 6 years

<u>Future amount formula:</u>

  • F = P(1 + r/n)^(nt)

<u>Substitute given values:</u>

  • F = 2250(1 + 0.024)^6 = 2594.07
8 0
3 years ago
Evaluate the piecewise at x=-4 and x=4
Umnica [9.8K]
If x = -4
f(x) = (-4)^2 = 16

if x = 4
f(x) = √4 = 2

hope it helps
3 0
3 years ago
A solution of salt and water contains 70 grams of water per 140 milliliters of the solution. if 1 mole of water weighs 16 grams,
Fynjy0 [20]
Be present in 35 milliliters of the solution. [round off your answer to two decimal places. if you answer is less than one, include the zero before the decimal point.]

6 0
3 years ago
How to do: -8(1-a)=-7-(1-3a)
Fiesta28 [93]

In this question, you're solving for a.

Solve for a:

-8(1 - a) =-7 -(1 - 3a)

<em>use the distributive property</em>

-8 + 8a = -7 -(1 - 3a)

-8 + 8a = -7 - 1 + 3a

<em>combine like terms</em>

-8 + 8a = -8 + 3a

<em>subtract 3a from both sides</em>

-8 + 5a = -8

<em>add 8 to both sides</em>

5a = 0

<em>divide both sides by 5</em>

a = 0

7 0
3 years ago
PLEASE HELP!!!! Find the value of -7 - 8 - (-8) - 7. 0 14 -14 -30
miskamm [114]

-7 - 8 - (-8) - 7 × 0(14) - 14 - 30

(I think that's what that says)

Do PEMDAS

0(14) = 0

-7 × 0 = 0

You're left with -7 - 8 - (-8) - 14 - 30

Go from left to right

-7 - 8 = -15

-15 - (-8) = -7

-7 - 14 = -21

-21 - 30 = -51

7 0
3 years ago
Read 2 more answers
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