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NISA [10]
3 years ago
8

If f(x) = 7x2 - 4x, what is the value of f(2)? F -8 J 17 G 2 K 20 H 6

Mathematics
1 answer:
kow [346]3 years ago
4 0

Answer:

K 20

Step-by-step explanation:

f(x) = 7x2 - 4x

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

= 28 - 8

= 20

Since they replaced the x inside f(x) with 2, just do that the same to the right side, change all x into 2

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Help! Please! You can just give answers if want to make It faster.
sergiy2304 [10]

Answer:

X' = (-3 , -5)

Y' = (-1, -1)

Z' = (4, -8)

General rule: (x,y) = (y, -x)

I am 1 brainly away from the next rank, your help would be appreciated

8 0
3 years ago
Given that√7=2.65 and √70=8.37,find the value of
dolphi86 [110]

Answer:

A) 0.265

B) 0.0265

C) 0.837

D) 0.0837

E) 0.00265

F) 0.00837

Step-by-step explanation:

We are given;

√7 = 2.65 and √70 = 8.37

A) √0.07 can be rewritten as;

√(7 × 1/100)

Let's deal with the digits in the bracket.

Square root of 100 is 10. Thus;

√(7 × 1/100) = (1/10)√7 = (1/10) × 2.65 = 0.265

B) √0.0007

Rewrite to get;

√(7 × 1/10000)

Square root of 1/10000 is 1/100

Thus;

√(7 × 1/10000) = (1/100)√7 = (1/100) × 2.65 = 0.0265

C) √0.7

Like above;

√0.7 = √(70 × (1/100))

>> (1/10)√70 = (1/10) × 8.37 = 0.837

D) √0.007

Like above;

Rewrite to get;

√(70 × 1/10000)

Square root of 1/10000 is 1/100

Thus;

√(70 × 1/10000) = (1/100)√70 = (1/100) × 8.37 = 0.0837

E) √0.000007

Rewritten to;

√(7 × (1/1000000))

√(1/1000000) = 1/1000

Thus; √(7 × (1/1000000)) = 1/1000 × √7 = 1/1000 × 2.65 = 0.00265

F)√0.00007

Rewritten to;

√(70 × (1/1000000))

√(1/1000000) = 1/1000

Thus; √(70 × (1/1000000)) = 1/1000 × √70 = 1/1000 × 8.37 = 0.00837

8 0
3 years ago
What is the solution for -10 < x - 9?
enyata [817]
<span>-10 < x - 9

</span><span>-10+9 < x - 9+9

-1<x, or
x> - 1</span>
4 0
3 years ago
Question 34 please help me
tino4ka555 [31]
740 + 850 x 100=? And there!!
7 0
3 years ago
Simplify 4+2 squared
Tanya [424]
4+2^2
=4+(2×2)
=4+(4)
=4+4
=8

or

(4+2)^2
=(4+2) × (4+2)
=16+8+8+4
=36

hope this helps!! please make my answer brainliest to help me out, thx!!
5 0
3 years ago
Read 2 more answers
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