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Sedaia [141]
3 years ago
11

What is a function? and is this a function?

Mathematics
2 answers:
hichkok12 [17]3 years ago
8 0

Answer: it is not a function if the x repeats

Step-by-step explanation: My teacher always says THE X DOES NOT REPEAT that is the easiest way to remember it

Scrat [10]3 years ago
3 0

Answer:

Step-by-step explanation:

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

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James estimated the total cost of groceries to be $50. The actual cost of the groceries is $65. What is the percent error? Round
Yuki888 [10]

The percentage error is 23%

Explanation:

The estimated total cost of the groceries = $50

The actual cost of the groceries = $65

To find the error value, we need to subtract the value of actual cost and total cost of the groceries.

Thus,

error value = actual cost - total cost

error value = 65-50=15

Hence, error value = $15

The formula to determine the percent error is given by

Percent error $=\left(\frac{\text { error value}}{\text {actual value}}\right) \times 100$

Substituting the values in the formula, we get,

$\begin{aligned} \text { Percent error } &=\left(\frac{15}{65}\right) \times 100 \\ &=0.231 \times 100 \\ &=23.1 \end{aligned}$

Rounding off the value, we have, 23%

Thus, the percentage error is 23%

6 0
3 years ago
Solve and check:8a-4=25+6(a-8)
OlgaM077 [116]
8a - 4 = 25 + 6 (a - 8)

(distribute the 6)

8a - 4 = 25 + 6a - 48

(combine like terms 25 - 48)

8a - 4 = 6a - 23

( subtract 6a from both sides)

2a - 4 = -23

(add 4 to both sides)

2a = -19

(divide both sides by 2)

a = - 9.5

////CHECK/////

8 (-9.5) - 4 = 25 + 6 ( -9.5 -8)

(plug each side into a calculator)

-80 = -80

FINAL ANSWER:

a = -9.5
5 0
3 years ago
Anyone know how to do #21?
Andreas93 [3]
Would it be y2 ? idk im not sure but i tried


6 0
3 years ago
A brand of uncooked spaghetti comes in a box that is a rectangular prism with a length of 8 inches, a width of 2 inches, and a h
garik1379 [7]

Answer:

24 sq inches. Hope this helps :)

Step-by-step explanation:

4 0
3 years ago
Please help me I am clueless
Anastaziya [24]
The first one on the right

If b is greater, then it will be to the right of a
7 0
3 years ago
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