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4 years ago

If f(x) = 3x 7, what is f(-2)?

Mathematics

1 answer:

xxMikexx [17]4 years ago

6 0

-6×7
-42
It's answer is -42

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PLSSS HELP WILLING TO HELP ANYONE

Bess [88]

I can't see the whole thing

6 0

3 years ago

The area of trapezoid TRAP is 100. Furthermore, TR = 32, AP = 8, and TP = RA. If AngleT = AngleR, what is the length of segment

Elenna [48]

Answer:

TP: 13

Step-by-step explanation:

A=((b1+b2)/2)*h

100=((8+32)/2)*h

100=(40/2)*h

100=20h

h=5

A=8*5+((32-8)/2)*0.5*5*2

100=40+(24/2)*5

60=12*5

thus, point E is is 12 away from T

Triangle TPE:

the catets are TE:12 and PE:5

Lets use the Pythagorean theorem:

a^2+b^2=c^2

12^2+5^2=c^2

144+25=c^2

169=c^2

c=(+/-)13

since distance can only be positive, the answer is:

segment TP has the length of 13 units

7 0

3 years ago

The radius of a semicircle is 5 feet. What is the semicircle's diameter?<br>

Naddika [18.5K]

Answer:

The diameter of the semicircle is 10 feet.

Step-by-step explanation:

This is because d=r2 or diameter=radius*2

7 0

3 years ago

Read 2 more answers

Luther evaluated 2 with the exponent of 3 as 9 and Wade evaluated 3 with the exponent of 2 as 9. Are both students correct?

8090 [49]

Answer:

No.

Step-by-step explanation:

2^3 is 8. An easy way to check this is by doing 2*2*2.

3^2 however is 9 because 3*3 is 9

5 0

4 years ago

The average cost of online photos decreased

SCORPION-xisa [38]

Answer:

The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year

Step-by-step explanation:

Given that

Price of print in 2002 = p1 =$0.50

Price of print in 2013 = p2 =$0.13

y1 = 2002

y2 = 2013

The rate of change is given by the formula:

$r = \frac{decrease}{run}$

Here decrease is the change in price and run is the difference in years.

Mathematically, it can be written as:

$r = \frac{p_2-p_1}{y_2-y_1}$

Putting the values

$r =\frac{0.13-0.50}{2013-2002}\\r = \frac{-0.37}{11}\\r =-0.0336\\r = -0.034$

Hence,

The average rate of change is -0.034 which means that the decrease is -0.034 in the cost of per print per year

6 0

3 years ago