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NikAS [45]
3 years ago
13

8th grade math Ik but I do need help though

Mathematics
1 answer:
kramer3 years ago
7 0

Answer:

x =-4

Step-by-step explanation:

4x+9 = -2x-15

Add 2x to each side

4x+2x +9 = -2x+2x-15

6x+9 = -15

Subtract 9 from each side

6x +9-9=-15-9

6x = -24

Divide each side by 6

6x/6 = -24/6

x = -4

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What are the zeros of f(x) x^2-x-20
PolarNik [594]

Answer:

x = - 4, x = 5

Step-by-step explanation:

To find the zeros equate f(x) to zero, that is

x² - x - 20 = 0

Consider the factors of the constant term (- 20) which sum to give the coefficient of the x- term (- 1)

The factors are - 5 and + 4, since

- 5 × 4 = - 20 and - 5 + 4 = - 1, thus

(x - 5)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 4 = 0 ⇒ x = - 4

x - 5 = 0 ⇒ x = 5

8 0
3 years ago
Read 2 more answers
A teepee is designed to have a diameter of 10 ft and a volume of 366ft³ what is the height? A.15ft , b.14 ft, c 5ft, or 1 ft
Katarina [22]

Answer:

B.  14 ft approx

Step-by-step explanation:

Given data

A teepee  has a conical shape

Diameter= 10ft

radius= 5 ft

Volume = 366ft³

Height = ????

The expression for the volume is

V= 1/3πr^2 h

substitute

366= 1/3*3.142*5^2*h

366= 1/3*78.55*h

366= 26.18h

h= 366/26.18

h=13.98 ft

h= 14 ft approx

Hence the Height is 14 ft approx

5 0
3 years ago
Read 2 more answers
The quotient of three times a number and 4 is at least -16
vladimir1956 [14]
Ok to solve this just write it out how it sounds, like so.

3x/4\geq-16

Hope this helps!=)
4 0
3 years ago
Help Me Help Me Help!!!!
lions [1.4K]
X=6 because
9-6=3

X=3 because
2•3=6

X=2 because
1.5 or 1 1/2 • 2 = 3

Not sure if this was what you needed or not!
3 0
3 years ago
Read 2 more answers
A. Identify the percentage, rate and base.
Finger [1]

Answer:

1. rate = 30, base = 40, percentage = 12

2. rate = 6, base = 24, percentage = 25

3. rate = 16, base = 64, percentage = 25

4. rate = 4, base = 50, percentage = 20

5. rate = 75, base = 80, percentage = 60

Step-by-step explanation:

5 0
3 years ago
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