3 years ago

How can you find f(4) if f(x)=7x^(2)-5

Mathematics

1 answer:

VashaNatasha [74]3 years ago

7 0

Answer:

107

Step-by-step explanation:

f(x)=7x^(2)-5

f(4) means that x=4

f(4)=7*4^(2)-5

= 7 * 16 -5

= 112 -5

= 107

You might be interested in

"During the winter snow season, the Snowy Mountain Coffee Spot sells hot chocolate for 47 cents. If Katrina paid for a cup of ho

eduard

Answer:

4 dimes an 7 pennies

Step-by-step explanation:

it should be easy

3 0

3 years ago

Which of the binomials below is a factor of this trinomial?

FromTheMoon [43]

Answer:

6 X2 6X-72

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Find x in this proportion. 5/2x=25/4 x=__? 2/5 5/2 4/5 8/5

8_murik_8 [283]

Correct answer is A.

$\frac{5}{2x} = \frac{25}{4} 
\\
\\2x\times 25=5\times 4
\\50x=20
\\
\\x= \frac{20}{50}= \frac{2}{5}$

8 0

3 years ago

Read 2 more answers

Simplify radical -81

Solnce55 [7]

Step-by-step explanation:

-81

$\sqrt{ - 1} \: \times \sqrt{81}$

$\sqrt{ - 1} = i$

$i \times \sqrt{9 {}^{2} }$

$i \times 9$

$9i$

5 0

3 years ago

A grocer can buy strawberries for $1.38 per pound. write an equation relating c, the cost, and p, the pounds of strawberries.

slamgirl [31]

Answer:

1.38p=C

Step-by-step explanation:

each pound is $1.38 and pounds is p they have to equal to C, the total.

5 0

3 years ago