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3 years ago

If h(x) = 3x − 1 and j(x) = −2x, solve h[j(2)] and select the correct answer below.

Mathematics

1 answer:

mamaluj [8]3 years ago

5 0

Answer:

- 13

Step-by-step explanation:

To evaluate h(j(2)) substitute x = 2 into j(x) then substitute the value obtained into h(x)

j(2) = - 2 × 2 = - 4, then

h(- 4) = (3 × - 4) - 1 = - 12 - 1 = - 13

Hence h(j(2)) = - 13

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A local hamburger shop sold a combined total of 712 hamburgers and cheeseburgers on Tuesday. There were 62 more cheeseburgers so

hammer [34]

A local hamburger shop sold a total of 712 burgers on Tuesday

There are 62 more cheeseburgers than hamburgers

let cheeseburers = c
let hamburgers = h

h + 62 = c
c + h = 712

Plug in h + 62 for c

(h + 62) + h = 712
2h + 62 = 712
2h + 62 (-62) = 712 (-62)
2h = 650
2h/2 = 650/2
h = 325

There are 325 hamburgers sold on Tuesday

c = 325 + 62
c = 387

There are 387 chesseburgers sold on tuesday (in case you were wondering)

hope this helps

4 0

3 years ago

What are the roots of the function f(x) = x2 + 2x – 1? a. x = ± √ _ 2 b. x = − 1 ± √ _ 2 c. x = 2 ± √ _ 2 d. x = 1 ± √ _ 2

Masteriza [31]

Step-by-step explanation:

Root of the function, where y = 0

f(x) = x² + 2x - 1

0 = x² + 2x - 1

x² + 2x - 1 = 0

x² + 2x = 1

x² + 2x + 1 = 1 + 1

(x + 1)² = 2

x + 1 = ±√2

x = -1 ± √2

Roots → x = -1 ± √2

7 0

2 years ago

Me podrian ayudar en esto porfavor

Vilka [71]

Answer:

desafortunadamente no hablo español jajaja aunque lo estoy hablando bien no voy a ayudar solo quiero puntos gratis

Step-by-step explanation:

4 0

3 years ago

You were gonna skip this wernt you. i guess you dont love me ;(

irina1246 [14]

Actually when i saw it i stopped

explanation: tryna get points

4 0

3 years ago

PLS HELP ASAP TRUE FALSE

WITCHER [35]

I think the correct answer would most likely be true

8 0

3 years ago