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3 years ago

Which graph represents a function with direct variation?

Mathematics

1 answer:

morpeh [17]3 years ago

6 0

Answer:

Step-by-step explanation:

I took the test, trust me bru

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I am the 2nd digit number with two prime factors each to the second power. what number am i?

Semmy [17]

Answer:

Step-by-step explanation:

Let's start by taking two of the smallest prime numbers: 2&3

Then we square both of them:

2²=4

3²=9

Then we multiply 4*9 to get 36.

5 0

3 years ago

A jeweler wants to make 14 grams of an alloy that is precisely 75% gold.. The jeweler has alloys that are 25% gold, 50% gold, &a

Goryan [66]

Given that the jeweler has alloys that are 25% gold, 50% gold, and 82% gold.

As he wants to make 14 grams of an alloy by adding two different alloys that is precisely 75% gold, so one alloy must have a percentage of gold more than 75%.

One alloy is 82% gold and, the second can be chosen between 25% gold, 50% gold, so there are two cases.

Case 1: 82% gold + 50% gold

Let x grams of 82% gold and y grams of 50% gold added to make x+y=14 grams of 75% gold, so

75% of 14 = 82% of x + 50% of y

$\Rightarrow 75/100 \times 14 = 82/100 \times x + 50/100 \times y \\\\$

$\Rightarrow 75/100 \times 14 = 82/100 \times x + 50/100 \times (14-x)$ [as x+y=14]

$\Rightarrow 75 \times 14 = 82 \times x + 50 \times (14-x) \\\\\Rightarrow 75 \times 14 = 82 \times x + 50 \times14-50\times x \\\\\Rightarrow 75 \times 14 = 32 \times x + 50 \times14 \\\\\Rightarrow 32 \times x =75 \times 14 - 50 \times14 \\\\$

$\Rightarrow x =(25 \times 14)/32=10.9375$ grams

and $y = 14-x= 14-10.9375=3.0625$ grams.

Hence, 10.9375 grams of 82% gold and 3.0625 grams of 50% gold added to make 14 grams of 75% gold.

Case 2: 82% gold + 25% gold

Let x grams of 82% gold and y grams of 25% gold added to make x+y=14 grams of 75% gold, so

75% of 14 = 82% of x + 25% of y

$\Rightarrow 75/100 \times 14 = 82/100 \times x + 25/100 \times y \\\\\Rightarrow 75/100 \times 14 = 82/100 \times x + 25/100 \times (14-x) \\\\ \Rightarrow 75 \times 14 = 82 \times x + 25 \times (14-x) \\\\\Rightarrow 75 \times 14 = 82 \times x + 25 \times14-25\times x \\\\\Rightarrow 75 \times 14 = 57 \times x + 25 \times14 \\\\\Rightarrow 57 \times x =75 \times 14 - 25 \times14 \\\\$

$\Rightarrow x =(50 \times 14)/57=12.28$ grams

and $y = 14-x= 14-12.28=1.72$ grams.

Hence, 12.28 grams of 82% gold and 1.72 grams of 50% gold added to make 14 grams of 75% gold.

3 0

3 years ago

Write a real-world problem for the given inequality,15x + 3 < 14x + 5

svetlana [45]

Answer:

Step-by-step explanation:

8 0

3 years ago

Meg wants to take tennis lessons. In the chart, four instructors are listed with what they charge. Which instructor gives the be

Ierofanga [76]

So,

Mark wants $100 for 10 hrs., or $10/hr.

Rick wants $80 for 9 hrs., or $\frac{80}{9} /hr. or$ $8.89/hr.

Steve wants $75 for 8 hrs., or $ $\frac{75}{8}$ /hr. or $9.38/hr.

Finally, Andy wants $60 for 5 hrs., or $12/hr.

We can see that <u>Rick</u> offers the best deal, at $8.89/hr.

8 0

3 years ago

Read 2 more answers

I GIVEEE BNRANILISTT .

denpristay [2]

Answer:

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Step-by-step explanation:fdfbdfbdfbfdfbdf

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6 0

3 years ago