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4 years ago

A function with an input of 4 has an output of 10. Which of the following could not be the function equation?

1 answer:

6 0

If you would like to know which of the following could not be the function equation, you can find this using the following steps:

input ... 4
output ... 10

y = x + 6 ... y = 4 + 6 = 10

y = 2x + 3 ... y = 2 * 4 + 3 = 8 + 3 = 11

y = 14 - x ... y = 14 - 4 = 10

<span>y = (2.5)x ... y = (2.5) * 4 = 10
</span>
The correct result would be y = 2x + 3.

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What is 625 in exponential form

Anit [1.1K]

5 x 5 x 5 x 5 = 625,

3 0

4 years ago

Read 2 more answers

1. A tank is 3/5 full of water. After 330 litres of water is drawn out, it becomes 2/7 full. Find the capacity of the tank in li

Andreas93 [3]

Answer:

1050

Step-by-step explanation:

Let x = full capacity

$\frac{3}{5} x=\frac{2}{7} x+330$

Move the variable to the left side by subtracting both sides by $\frac{2}{7} x$

$\frac{3}{5} x-\frac{2}{7}x=\frac{2}{7} x+330 -\frac{2}{7}x$

$\frac{3}{5} x-\frac{2}{7} x=330$

Combine the like terms (don't forget about common denominator)

$\frac{21}{35} x-\frac{10}{35} x=330$

$\frac{11}{35} x=330$

Multiply both sides by $\frac{35}{11}$ to isolate the x

$(\frac{35}{11})\frac{11}{35} x=330(\frac{35}{11})$

$x = 1050$

5 0

3 years ago

A concrete driveway is 5 feet longer than twice its width. It has a brick walkway 3 feet wide on the front and side of the drive

KonstantinChe [14]

Answer:

The dimensions of the driveway are 21 ft x 47 ft, which is option "D" in your list of possible answers

Step-by-step explanation:

Notice that the length "L" of the driveway can be written in terms of its width as:

L = 2 w + 5

based on the given information.

Please see the attached diagram to understand the geometry of the problem, and what the area of the brick walkway involves (depicted in brick color) as the addition of the area of two rectangles:

1) one of length L= 2 w + 5 (w being the width of the driveway - depicted in grey) times 3 feet (the width of the brick walkway

and the other one:

2) w + 3 times 3

Therefore the total area of the brick walkway is given by the formula:

(2 w + 5) * 3 +(w + 3) * 3 = 213 square feet

Now we can solve for "w" in the above equation:

6 w + 15 + 3 w + 9 = 213

9 w + 24 = 213

9 w = 213 - 24

9 w = 189

w = 189/9

w = 21 feet

We can now solve for the L of the driveway, using the first formula we created:

L = 2 w + 5

L = 2 (21) + 5

L = 42 + 5

L = 47 feet

Therefore the driveway's width is w = 21 feet

and its length is L = 47 feet

7 0

3 years ago

Liz works as a lifeguard at her community pool and at the beach. On Saturday, she worked at the pool for 6 hours and earned $46.

Damm [24]

She earned 25 cents more at the pool than at the beach

8 0

3 years ago

Read 2 more answers

PLZ HELP

Roman55 [17]

She has 65 water bottles....and she is buying boxes of water bottles (x) that hold 16 water bottles each. She can only buy up to 5 water bottles.

f(x) = 16x + 65...where f(x) = total water bottles and x = number of boxes
x < = 5.....here is ur restriction

the range is ur f(x) values which represent the total number of water bottles...keep in mind, she can only buy 5. Therefore, the numbers that can be subbing in for x are 0 thru 5.

So when subbing in 0 thru 5 for x, the results for f(x) are :
{ 65,81,97,113,129 } <== ur range

4 0

4 years ago