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stiks02 [169]
3 years ago
5

How can you find f(3) if f(x) = -2x2 – 4?

Mathematics
2 answers:
Julli [10]3 years ago
8 0

Answer: f(3)=-20

Step-by-step explanation:

If you look at f(x) and f(3), you can see that 3 is in place of x. That means when x=3, what is f(x). You plug in x=3 into f(x) and solve.

f(3)=-2(3)²-2

f(3)=-2(9)-2

f(3)=-18-2

f(3)=-20

Citrus2011 [14]3 years ago
8 0

Answer:

-20

Step-by-step explanation:

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Aaron is 6 years old, Beth is 9 years old and Charlie is 15 years old. They are going to share £5940 in the same ratio as their
Andre45 [30]

Answer:

Aaron=1188

Beth=1782

Charlie=2970

Step-by-step explanation:

From the question we are told that

Ratio 6:9:15

Total amount to e shared N=£5940

Generally the Ratio can divide the Total amount mathematically as follows

Ratio

6:9:15/3=2:3:5

Sum of ratio

2+3+5=10

For Aaron

A=\frac{2}{10} *5940

A=1188

For Beth

B=\frac{3}{10} *5940

B=1782

For Charlie

C=\frac{2}{10} *5940

C=2970

Check answer

A+B+C=5940\\1188+1782+2970=5940

4 0
2 years ago
You know that 12x=60, and that x=5. Which property of equality would you use to conclude that 12•5=60?
alexandr402 [8]

ANSWER

The substitution property of equality.

EXPLANATION

We know that:

12x = 60

and that

x = 5

Since x=5 or 5=x , we can substitute x for 5 wherever we see x in the given equation.

When we do that, we obtain;

12 \bullet \: 5 = 60

This is what we refer to as the substitution property of equality.

5 0
3 years ago
√-90=ai√b what is the value of a and b?
OlgaM077 [116]

Answer:

what is this topic in math?

3 0
3 years ago
What is the value of <br> 56÷37?<br> 56÷37?
Galina-37 [17]

Answer:

exact form is 56/37

decimal form is 1.513

mixed number form is 1 19/37

Step-by-step explanation:

8 0
2 years ago
I put 80 POINTS into question please answer
anzhelika [568]
The answer is -0.4. hope this helps
8 0
3 years ago
Read 2 more answers
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