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ruslelena [56]
3 years ago
9

Lesson 4 practice problems.

Mathematics
1 answer:
aivan3 [116]3 years ago
4 0

Answer:

which is the question yours asking help for

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If f(a) = 2a ^ 3 + 3a ^ 2 + 5 , find f(- 2)
UkoKoshka [18]
<h2>Answer: 1</h2>

Step-by-step explanation:

Just plug in -2 anywhere you see an <u>a</u>

f(a)=2a^3+3a^2+5\\f(-2)=2(-2)^3+3(-2)^2+5\\f(-2)=2(-8)+12+5\\f(-2)=-16+12+5\\f(-2)=1

8 0
2 years ago
Read 2 more answers
Use the equation below to answer the question.
Ratling [72]

Answer:

The equivalent equation is correctly matched with a key feature of the graph is

y = 3(x + 2) highlights that the x-intercept is at -2.

Step-by-step explanation:

Given:

y=3x+6

Solution:

The Given Equation is in Slope - Point Form i.e

y=mx+c

Where,

m=slope\\\\c=y-intercept

On Comparing the given equation with above we get

slope=m=3\\\\y-intercept =6

Now we Know that

Intercepts:

The line which intersect on x-axis and y-axis are called intercepts.

There are two intercepts:

y-intercept: The line which intersect at y-axis. So when the line intersect at y-axis X coordinate is zero.

x-intercept: The line which intersect at x-axis. So when the line intersect at x-axis Y coordinate is zero.

For x-intercept

Put y = 0 in

y=3(x+2)

0=3x+6\\\\3x=-6\\\\\therefore x=\dfrac{-6}{3}=-2

∴ x-intercept of

y=3x+6

x-intercept = -2

The equivalent equation is correctly matched with a key feature of the graph is

y = 3(x + 2) highlights that the x-intercept is at -2.

6 0
4 years ago
7 guests coming to the party. Each guest drink 500ml of lemonade each. How many litres of lemondae yo buy. If rach litre costs &
Vedmedyk [2.9K]
1 guest = 500ml
7 guests = 500ml × 7 = 3500ml = 3.5litres
1 litre = $1.50
0.5 litre = $1.50 ÷ 2 = $0.75
3.5litres = $1.50 + $1.50 + $1.50 + $0.75 = $5.25
answer is $5.25
8 0
3 years ago
2. Solve for y.<br><br> A 10.5<br><br> B 9<br><br> C 13.5<br><br> D 12
Vera_Pavlovna [14]
It’s A
Because if you subtract 12 from 96 you’ll get 8y=84 then divide both sides by 8 you get 21/2 simplify and get 10.5 or 10 1/2
5 0
3 years ago
A spinner contains the numbers 1 through 50. What is the probability that the spinner will land on a number that is not a multip
ASHA 777 [7]

Answer:

The answer is 24.

Step-by-step explanation:

from 0 to 50 there are 12 numbers that are a multiple of 4 now we convert the 12 and 50 into a fraction it would look like this:

12/50

then we need to find the least common denominator of 50 and 100, it is 100 so we multiply 50 and 12 times 2 to get an answer of 24/100.

7 0
3 years ago
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