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2 years ago

Pls pls pls pls help!

Mathematics

2 answers:

katen-ka-za [31]2 years ago

8 0

Answer:

1440 ounces

Step-by-step explanation:

80 pounds+ 10=90

90 pounds to ounces is 1440 ounces

Inga [223]2 years ago

5 0

Answer:

1/2 - C

1/4 - B

1/8 -D

? - A

1/2*1/4*1/8 = 1/16 of the class got an A

2) 40 lb = 840 oz

840 x* 2 1/4 = 1890 oz

Archie's dog eats 1890 oz of dog food in 2 1/4 years.

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Question 1 (1 point)

ratelena [41]

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3 years ago

Help please:Suppose that x and y inversely, and x=10 when y=8 write the function that models the inverse variation

jarptica [38.1K]

SOLUTION

From the question, we are told that y varies inversely as x

This is mathematically written as

$\begin{gathered} y\propto\frac{1}{x} \\ \propto\text{ is a sign of proportionality } \end{gathered}$

Now, we will remove the proportionality sign and replace it with equal to sign =

If we do this, we will intoduce a constant k

$\begin{gathered} y\propto\frac{1}{x} \\ y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}$

So we have the formula

$y=\frac{k}{x}$

We will substitute the values of x for 10 and y for 8 into the formula to get k, we have

$\begin{gathered} y=\frac{k}{x} \\ 8=\frac{k}{10} \\ k=8\times10 \\ k=80 \end{gathered}$

Now, we will substitute k for 80 back into the formula to get the inverse function, we have

$\begin{gathered} y=\frac{k}{x} \\ y=\frac{80}{x} \end{gathered}$

Hence the answer is option C

7 0

1 year ago

Tewanda read 2,000 word news article in 8 minutes. How fast did she read the news article? Explain how you found your answer.

Blababa [14]

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She read 250 words per minute.

Step-by-step explanation:

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Hope this helped!

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2 years ago

You make $5000 per morth. If you spend 50% on necessitles, 30% on stuff you want and 20% of it you end up saving, how much money

liubo4ka [24]

Answer:

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Step-by-step explanation:

5000 dollars is 100 percent so we put 5000 over 100

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then since we need to find 20 percent of something, we put x over 20

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Then we cross multiply

<u>5000</u> times <u>x </u>

100 20

so 100x = 100000

and x = 1000

Good luck, and hope I did this correctly

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