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azamat
3 years ago
8

F(x)= -3x+7 what is f(-20)?

Mathematics
1 answer:
TEA [102]3 years ago
6 0

Answer:

67

Step-by-step explanation:

Evaluate 7 - 3 x where x = -20:

7 - 3 x = -3 (-20) + 7

Hint: | Multiply -3 and -20 together.

-3 (-20) = 60:

60 + 7

Hint: | Evaluate 60 + 7.

60 + 7 = 67:

Answer: 67

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Help!!!!¡¡¡¡ i need help solving this it will increase my letter grade!!!!
Shtirlitz [24]

Answer:

The answer is below⬇️⬇️

Step-by-step explanation:

f(x) = 3x+4

g(x) = 2x

h(x) = x²+x-2

g(hx) = 2(x²+x-2)

= 2x²+2x-4

f(g(hx))=3(2x²+2x-4)+4

=6x²+6x-12+4

=6x²+6x-8

g(f(g(hx)))=2(6x²+6x-8)

=12x²+12x-16

f(g(f(g(hx))))=3(12x²+12x-16)+4

=36x²+36x-48+4

=36x²+36x-44

h(f(g(f(g(hx)))))=(36x²+36x-44)²+36x²+36x-44-2

=1296x⁴+2592x³-1872x²-3168x+1936+36x²+36x-46

=1296x⁴+2592x³-1836x²-3132x+1890

f(h(f(g(f(g(hx))))))=3(1296x⁴+2592x³-1836x²-3132x+1890)+4

=3888x⁴+7776x³-5508x²-9396x+5674

h(f(h(f(g(f(g(hx)))))))=(3888x⁴+7776x³-5508x²-9396x+5674)²+3888x⁴+7776x³-5508x²-9396x+5674-2

=15116544x⁸+60466176x⁷+17635968x⁶-158723712x⁵-71663616x⁴+657591048x³-255531048x²-106635204x+32194276

6 0
3 years ago
Does -7 • 8 = 7 • (-8) ?
goldenfox [79]
Yes, because it does not matter which order you multiply the factors in; you will always get the same answer.
3 0
3 years ago
Read 2 more answers
3x+4y=17
Readme [11.4K]
<span>A) 3x+4y=17
B) -4x-3y=-18 Multiplying B) by .75
</span><span>B) -3x -2.25y= -13.5 then adding this to A
</span><span><span>A) 3x + 4y = 17</span>
1.75y = 3.5
y = 2
</span><span>
A) 3x + 4*2 = 17</span>
3x + 8 = 17
3x = 9
x = 3

(3,2)


5 0
3 years ago
Juanita has saved 35% of the money for a bike. She has saved $63 dollars. How much does the bike cost?
lara [203]

Answer:

The total cost of the bike is $180.

Step-by-step explanation:

Given that Juanita has saved 35% of the money for a bike.

Let the total cost of the bike = x

As she has saved $63 dollars which represents the 35% of the money for a bike.

In other words, 35% of the total cost is $63 dollars.

As the total cost = x

Thus,

35% of x = 63

\frac{35}{100}x=63

Multiply both sides by 20

20\times \frac{35}{100}x=63\times \:20

simplify

7x=1260

Divide both sides by 7

\frac{7x}{7}=\frac{1260}{7}

Simplify

x=180 $

Thus, the total cost of the bike is $180.

8 0
3 years ago
Which equation can be used to find the value of b if side a measure 8.7 cm
valina [46]

b =y - 8.7cm
6 0
3 years ago
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