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gavmur [86]
3 years ago
15

If k(x) = 5x – 6, which expression is equivalent to (k + k)(4)?. . 5(4 + 4) – 6. 5(5(4) – 6) – 6. 54 – 6 + 54 – 6. 5(4) – 6 + 5(

4) – 6
Mathematics
2 answers:
Dmitrij [34]3 years ago
6 0
K(x) = 5x-6
(k+k)(x) = k(x) + k(x) = 5x-6 +5x-6
just plug in x = 4,
(k+k)(4) = 5(4) -6 + 5(4) -6
thats your answer, the last option.
Ghella [55]3 years ago
5 0

Answer:

d

Step-by-step explanation:

100%

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The container that holds the water for the football team is 2/3
Kipish [7]

Answer:

18 gallons

Step-by-step explanation:

We'll find out how much of the total container was lost when pouring out by subtracting 2/3 from 1/2.

2/3 = 4/6

1/2 = 3/6

4/6 - 3/6 = 1/6

1/6 of the total amount the container could hold was lost when 3 gallons was poured out. This means that 1/6 of the container equals to 3 gallons. We can then simply multiply 3 by 6 to find the number of gallons of liquid the container can hold.

3 * 6 = 18 gallons

Checking my answer:

18 * 2/3 = 6 * 2 = 12

12 - 3 = 9

1/2 of 18 = 9

This means that our answer is correct.

8 0
3 years ago
If y = -x² + 14x + 7 , then x = 10 is a counterexample for which conjecture?
Misha Larkins [42]

Answer:

The correct answer is B

Step-by-step explanation:

If we plug in x=10 to the equation, we get y=47

Since y is positive, A is not an counterexample

Since y is a function of x, C is not an counterexample

Since the graph of y is a parabola, D is not an counterexample

Hope this helped and mark as brainliest!

6 0
3 years ago
In step one do you found the volume (in cubic feet) of the main tank(359,006.67). The maximum density of killer whales per cubic
Luba_88 [7]

Answer:

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Step-by-step explanation:

The dimensional analysis is ...

  (whales/ft³)(ft³/tank) = whales/tank

Putting the numbers with the units, we get ...

  (1.1142·10^-5 whales/ft³)(3.5900667·10^5 ft³/tank) = 4.00005... whales/tank

The maximum number of killer whales allowed in the main show tank is 4.

6 0
3 years ago
What percent of 80 is 42?
ASHA 777 [7]

Answer:

I think it's 52.5%

Step-by-step explanation:

42/80

42 ÷ 80 = 0.525

0.525 * 100/100 = 52.5

4 0
3 years ago
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a scientist began a study with a simple of 1,500 bacteria . he noticed that the number of bacteria in the simple after t days ca
Aneli [31]

Answer:

the variable

Step-by-step explanation:

7 0
3 years ago
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