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Alexxx [7]
3 years ago
12

Use the given x and y values to write a direct variation equation. x = 5, y = 25

Mathematics
2 answers:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

k= 1/5

Step-by-step explanation:

x is proportional to y

x = ky (k is const.)

k = x/y

k= 5/25

k = 1/5

Helga [31]3 years ago
7 0

Answer:

Equation of direct variation is : \mathbf{y=5x}

Step-by-step explanation:

We are given: x= 5 and y=25

We need to write equation of direct variation.

The formula for direct variation is: \mathbf{y=kx}

So, if y=25 and x=5, k will be:

y=kx\\25=k(5)\\k=\frac{25}{5}\\k=5

So, equation of direct variation is : \mathbf{y=5x}

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What is the answer now in two minutes
Wittaler [7]

Answer:

60 degrees

Step-by-step explanation:

Cos of 60 is 1/2, unit circles helps with this.

4 0
3 years ago
4. find the real number roots. sqrt-0.25
e-lub [12.9K]

Given is square root of a negative real number, i.e. \sqrt{-0.25}

When we find square root of positive real numbers, we get Real answers.

But when we find square root of negative real numbers, we get Imaginary answers. To solve them, we can split the given negative number into product of -1 and the number itself but with positive sign. e.g. -4 = -1 x 4.

For square root of -1, we use english letter 'i' called Imaginary unit i.e. \sqrt{-1} = i

Now we can use -0.25 = -1 x 0.25

\sqrt{-0.25} =\sqrt{-1*0.25} \\\\ \sqrt{-0.25} =\sqrt{-1}*\sqrt{0.25} \\\\ \sqrt{-0.25} =i*0.5 \\\\ \sqrt{-0.25} =0.5i

Hence, "0.5i" is the final answer.

3 0
3 years ago
Read 2 more answers
How many ways can you make 6
stich3 [128]

1+5, 2+4, 3+3. 3 ways to make 6

3 0
3 years ago
Which is the translation of the expression below?
NNADVOKAT [17]
In English, the translation of those symbols is ...

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4 0
3 years ago
Assume that MTA Sandwiches sells sandwiches for $2.85 each. The cost of each sandwich follows:
mixas84 [53]

Answer:

a. profit is lower

b. lowest price $2.29

Step-by-step explanation:

a. We have to analyze how this especial order affect the profit of the company

Profit = Revenue- Total cost = P(x) =(Px * Q)-(FC + vc*Q)

Regular production profit= $2.85 x  18,400 units -$2.60  x  18,400 units=

Regular production profit=4600

Production with special order= (P1 * Q1)+(P2 * Q2)-(FC + vc*Q)

P2=  price of special order

Q2= quantity of special order

Q= Q1 +Q2

Production with special order= (P1 * Q1)+(P2 * Q2)-(FC + vc*Q)= $2.85 x  18,400 units +$1.85 x  800 units - $18,400- $1.60 x 19600=

Production with special order= 51888 +1480- $18,400- 30720

Production with special order= 4.248‬

b.Production with special order= (P1 * Q1)+(P2 * Q2)-(FC + vc*Q) =4600

=51888 +(P2 * 800)- $18,400- 30720 =4600

=(P2 * 800)= 4600- 51888 + $18,400+30720

P2=1.832/800 = 2,29

8 0
3 years ago
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