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Alex777 [14]
3 years ago
9

Given . f(x) = 3x2 + 4x – 30 find f (4) Show your work on the sketch pad below.

Mathematics
1 answer:
weeeeeb [17]3 years ago
4 0

Answer:

Step-by-step explanation:

f(4) = 3*(4)^2 + 4*(4) -30

f(4)=48 + 16 -30

=34

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Find the area of a square if the perimeter is equal to 38 in.
Misha Larkins [42]
Hello! I would love to help!

Alright! We know that perimeter is basically adding all the sides of a shape together. We also know that a square has 4 sides, so 38 is the result of 4 sides being added. Now, we also know that all sides of a square are even. So, to find one side of a square, we just need to do 38/4


38/4=9.5


Alright. So now we know one side of a square is 9.5 in. We know that in order to find area, we have to multiply length and width. We know that since all sides of a square are even, 9.5 is both our length and width. So, in order to find the area, we just have to multiply 9.5 by 9.5

9.5*9.5=90.25

Alright! So we have determined your answer!!!


90.25 or in fraction form 90 1/4 inches squared!

Hope this helped! Comment if you have questions!!
8 0
3 years ago
Divide 50 by half and add 20 and <br> multiply by 2
aivan3 [116]

The value of the expression will be equal to 145.

<h3>What is an expression?</h3>

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that make an expression for divide 50 by half and add 20 and multiply by 2.

The expression will be solved as below,

E = 50/2 + 25 x 2 + 50 + 20

Solve the above expression by PEMDAS,

E = 25 + 50 + 70

E = 145

To know more about an expression follow

brainly.com/question/25968875

#SPJ2

8 0
1 year ago
Read 2 more answers
Write an equation in two variables in the standard form that can be used to describe the velocity of the car at different times.
ira [324]
Velocity of the car is equal to the distance travelled by the time spent.

If V= velocity, d = distance & time = t, then


the equation becomes V=d/t
3 0
3 years ago
Help ASAP I will mark as brainlisyt thing
Ann [662]

Answer:

The last choice.

Step-by-step explanation:

Logically that’s the only viable choice, he clearly isn’t handsome, he does appreciate the landlord’s daughter, and he never shared any traits that would make him “a good robber”.

8 0
3 years ago
Read 2 more answers
Solve the equation.<br><br> –3x + 1 + 10x = x + 4
SIZIF [17.4K]

First, simplify. Combine like terms

10x - 3x = 7x

7x + 1 = x + 4

Isolate the x. Subtract x from both sides, and 1 from both sides

7x (-x) + 1 (-1) = x (-x) + 4 (-1)

7x - x = 4 - 1

Simplify

6x = 3

Isolate the x. Divide 6 from both sides

6x/6 = 3/6

x = 1/2

1/2, or 0.5 is your answer for x.

hope this helps

4 0
3 years ago
Read 2 more answers
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