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4 years ago

If f(x)=2x+9, then f(-1)= _____

Mathematics

1 answer:

Pavlova-9 [17]4 years ago

4 0

Answer:

f(-1) = 7

Step-by-step explanation:

Put -1 where x is and do the arithmetic.

f(-1) = 2(-1) +9 = 7

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Multiplication is doing what to the same number continuously?

SashulF [63]

Answer:

mutiplying it

Step-by-step explanation:

it is multiplying it because 2×2=4

8 0

3 years ago

Read 2 more answers

2/3÷2⁴+(3/4+1/6)÷1/3 How do you figure this out

Alecsey [184]

Answer: $\frac{67}{24}$

Step-by-step explanation:

$\frac{2}{3} /2^{4}+(\frac{3}{4} +\frac{1}{6})/\frac{1}{3} \\\\\frac{2}{3} /2^{4}+ \frac{11}{12} /\frac{1}{3} = \frac{2}{3} /16+ \frac{11}{12} /\frac{1}{3}$

Use the rule a÷b/c=a*c/b

$\frac{2}{3} *\frac{1}{16}+ \frac{11}{12}/ \frac{1}{3}$

Use the rule a/b*c/d=ac/bd

$\frac{2}{3*16}+ \frac{11}{12}/ \frac{1}{3} \\\\\frac{2}{48} +\frac{11}{12}/ \frac{1}{3} \\\\\frac{1}{24}+\frac{11}{12}/\frac{1}{3}$

Use the rule a÷b/c=a*c/b

$\frac{1}{24} +\frac{11}{12} *3$

Use the rule a/b*c=ac/b

$\frac{1}{24}+ \frac{11*3}{12}$

Simplify three times then you're done.

$\frac{1}{24}+ \frac{33}{12}= \frac{1}{24}+ \frac{11}{4} =\frac{67}{24}$

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

5 0

3 years ago

8 22/66 in lowest terms

dlinn [17]

In lowest terms the answer would be 8 1/3

4 0

3 years ago

Carol drove 720 km in 9 hours. What was her rate in km/hr? Please help

Nastasia [14]

Answer:

80 km/hr

Step-by-step explanation:

This is asking for speed.

Speed=Distance/Time

Speed=720/9

Speed=80 km/hr

4 0

3 years ago

7 twelveths divided by 2 fifths.

9966 [12]

Answer: 1 11/24

Do Keep Change Flip (KCF)

Keep: 7/12

Change: ÷ into ×

Flip: 2/5 into 5/2

Your new problem should be 7/12*5/2

Multiply

7/12*5/2=35/24

Turn 35/24 into a Mixed Number (Dvide)

35÷24 = 1 11/24

5 0

3 years ago