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2 years ago

Variable y varies directly with variable x, and y = 6 when x = 20.

Mathematics

1 answer:

-BARSIC- [3]2 years ago

7 0

In a direct proportion, the equation can be set up as
y = kx
k = y/x
k = 6/20
k = 0.3

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Identify the constants in the expression below.<br><br> 5x - 3y + 2x -15 +2y + 9

anzhelika [568]

Answer:

The constants are -15 and 9

Step-by-step explanation:

Constants are those numerical values that will never change, despite the value of x. The easiest way to find them are by finding those numbers that are not affecting x in any way.

5 0

2 years ago

Read 2 more answers

Factorising quadratics 2nd page

mihalych1998 [28]

A^2-b^2=(a+b)(a-b)

1: x^2-4=(x+2)(x-2)
2: (x+8)(x-8)
3: (x+10)(x-10)
4: (x+14)(x-14)

7 0

2 years ago

The product 33 × 90 is more than 32 × 90. How much more? Complete the explanation for how you know without multiplying.

Tju [1.3M]

Answer:

90, there are 32 ninetys in 32 X 90 and there are 33 ninetys in 33 X 90, meaning there is one more 90 in 33 X 90 than 32 X 90

5 0

2 years ago

A house that you are interested in has the following facts listed online: Price = $214,000 APR = 1.15% Down Payment must be 9.5%

gizmo_the_mogwai [7]

9514 1404 393

Answer:

$20,330 down
$193,670 loan
$560.35 monthly
$255,677 total price

Step-by-step explanation:

a) The down payment is 9.5% of the price, so is ...

down = 0.095×$214,000 = $20,330

b) The amount of the loan is the remaining value after the down payment is made:

$214,000 -20,330 = $193,670

c) The monthly payment is given by the amortization formula:

A = P(r/12)/(1 -(1 +r/12)^(-12t))

payment on Principal P at interest rate r for t years

A = $193,670(0.0115/12)/(1 -(1 +0.0115/12)^(-12·35)) ≈ $560.35

d) The total cost of the house is ...

down + (monthly payment)×(number of months)

= $20,330 + $560.35×420

= $255,677

6 0

3 years ago

50 - 5 to the second power divided by 5

Llana [10]

Hey!

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Steps To Solve:

50 - 5² ÷ 5

~Solve for exponent

50 - 25 ÷ 5

~Divide

50 - 5

~Subtract

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Answer: $\Large\boxed{\mathsf{45}}$

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Hope This Helped! Good Luck!

4 0

2 years ago