1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirza4 [7]
3 years ago
9

Evaluate 3x^2- 9 when x=-2

Mathematics
2 answers:
murzikaleks [220]3 years ago
6 0

Answer:

3

Step-by-step explanation:

We know x = -2, so we can substitute -2 in for x

3x^2- 9

3*-2^2-9

Solve the exponent first (PEMDAS)

3*4-9

Multiply next

12-9

Subtract

3

FrozenT [24]3 years ago
3 0

Answer:

3

Step-by-step explanation:

3x^2- 9 =

= 3(-2)² - 9

= 3×4 - 9

= 12 - 9

= 3

You might be interested in
(PLEASE HELP)<br><br> Find the area of the parallelogram.
Bess [88]

Answer:

A=B*H

Step-by-step explanation:

multiply B (base) by H (height)

5 0
3 years ago
Write this ratio 1:3.5 in the form p:q where p and q are whole numbers
Orlov [11]

We have to express the ratio 1 : 3.5 in the form p:q where p and q are whole numbers.

Consider the ratio of 1 and 3.5,

1 : 3.5 = \frac{1}{3.5}

= \frac{10}{35}

Reducing the above fraction to its lowest form.

So, we get \frac{10}{35}=\frac{2}{7}

Therefore, the ratio 1 : 3.5 is expressed as \frac{2}{7}

where 2 and 7 are the whole numbers.

4 0
3 years ago
I need help plz.
viva [34]

Answer:

slope = \frac{1}{2}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 8, 0) and (x₂, y₂ ) = (4, 6) ← 2 points on the line

m = \frac{6-0}{4+8} = \frac{6}{12} = \frac{1}{2}

8 0
3 years ago
Find the value of 48 - 32 = 4.2.<br> 8
MariettaO [177]

Answer:

48 - 16 = 32

Step-by-step explanation:

Use the PEMDAS method to help you solve the problem.

Parenthesis

Exponents

Multiply (Left to right)

Divide (Left to right)

Add (Left to right)

Subtract (Left to right)

32 ÷ 4 = 8

8 x 2 = 16

48 - 16 = 32

3 0
3 years ago
Using the formula for initial velocity h=-16t2+VT the height of any object can be found by the time, Annalee serves a volleyball
Zolol [24]

Answer:

evvvvvvvvv

Step-by-step explanation:

errrrrrrrrrrrrrrv

5 0
3 years ago
Other questions:
  • Alicia had 2/3 of a pound of berries. Alicia let her friend Jennifer eat
    14·2 answers
  • craig like to collect vinyl records.last year he had 10 records in his collection.now he has 12 records.what is the percent incr
    9·1 answer
  • Enter the correct answer in the box. Use the sum of cubes identity to find the factors of the expression 8x^6 + 27y^3
    5·2 answers
  • Which equation is y=(x+3)2+(x+4)2 rewritten in vertex form
    15·1 answer
  • Can someone please explain the answer to 4 1/3+ 2 3/4+ 1/6
    5·1 answer
  • How do i solve this question
    11·1 answer
  • Graph f(x) = |x - 6| -4
    14·1 answer
  • Can anyone answer me bc this is confusing
    11·2 answers
  • Please help me I don’t understand this
    8·1 answer
  • Whats thr answer to this? 3( -2d + 1) (pre alg)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!