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3 years ago

Which set of ordered pairs does not represent a function?

1 answer:

6 0

D because X values can not repeat, for it to be a function it must pass the vertical line test and if we graphed that, a vertical line would hit two spots, therefore D is not a function.

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Sarah answered 24 questions on her test correctly and earned an 80%. How many questions were on the test?

MaRussiya [10]

Answer:

43 questions in total

Step-by-step explanation:

the original equation with the unknown (total number of questions on the test) will look like this

$\frac{total \: number \: of \: questions \: on \: exam}{24 \: answered \: questions} = 80\%$

we know this because to work out a percentage in the 1st place you need the total ÷ number (in this case it's ÷ how many questions out of the total she did answer)

now you rearrange.

you need to move the 24 to get the total on it's own here's how you do it

$\frac{tot \: num \: of \: qs}{24} \times 24 = 80\% \times 24$

what you do to one side of equation you have to do to the other. the 24 and 24 on the left will cancel because 24÷24=1 and we don't write

got mum of Q's x 1= 80 x 24

now you convert % to decimal

$80\% \times 100 = 0.80$

replace

$tot \: num \: qs \: = 24 \times 0.80 = 19$

now you take the original and + the 19

$24 + 19 = 43$

therefore there are a total of 43 questions on the exam

5 0

3 years ago

A grocery store manager received two shipments of oranges. According to the distributor of the oranges, the oranges in both ship

Volgvan

The answer is
<span>The two shipments have the same range of weights but a different mean weight.
Hope i helped </span>

7 0

3 years ago

Read 2 more answers

The formula below gives T the approximate time in years it takes a population to double if the annual growth rate is r percent

valkas [14]

T=70/r
T=70/4.6
T=15 years

It's b

6 0

3 years ago

Read 2 more answers

Please answer this question, ONLY IF YOU KNOW THE ANSWER. No guessing, 20 points and brainliest!

Anika [276]

B. 3. Because if you have two people rolling a six sided die, with odd and even number contributions, you would divide 6 by 2. This is because there are TWO people going for TWO different types of numbers, odd and even. 6/2 gives us 3.

Hope this helps :)

6 0

3 years ago

Assume that a watermelon dropped from a tall building falls y = 16t ^ 2 ft in t sec. Find the watermelon's average speed during

mojhsa [17]

Answer:

A.) 96 ft/sec

Step-by-step explanation:

to find the average speed of the watermelon's fall in 6 seconds, substitute 6 as t in the equation and then divide by 6: $y = \frac{16(6)^{2} }{6} = 96 ft/sec$

7 0

2 years ago