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3 years ago

I will give you brainiest :) solve for k 9/10 = 10/k

Mathematics

1 answer:

Ahat [919]3 years ago

5 0

Answer:

k = 100/9

Step-by-step explanation:

In this question, we will be solving for "k".

Solve:

9/10 = 10/k

Cross multiply.

(9 · k) = (10 · 10)

9k = 100

Divide both sides by 9

k = 100/9

Your answer would be k = 100/9

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If Jenny has 43 apples, and gives 12 to John. How many apples does Jenny have left ?

jonny [76]

Answer:

Well, if Jenny starts out with 43 apples but then gives 12 to John that would leave Jenny with 31 apples.

Step-by-step explanation:

43 - 12 = 31

(40 - 10) + (3 - 2)

40 - 10 = 30

3 - 2 = 1

30 + 1 = 31

Here is your answer, have a nice day!

6 0

2 years ago

What is 2x+13-5=7x-30

kogti [31]

Solve for x by simplifying both sides of the equation then isolating the variable.

x = 38/5

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4 years ago

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You have $90,000 for investment. You will invest S dollars in stocks and B dollars in bonds. You expect a 10% return on stocks a

SIZIF [17.4K]

The dollar amount for the return on stocks is $3375 and the dollar amount for the return on bonds is $1125.

Two equations can be derived from the question:

s + b = $90,000 equation 1

0.1s + 0.02b = $4500 equation two

$4500 = 0.05 x $90,000

The above equation is a simultaneous equation and it would be solved using the elimination method.

The following steps would be take to determine the value of b

Multiply equation 1 by 0.1

0.1s + 0.1b = 9000 equation 3

Subtract equation 2 from 3

0.08b = $4500

b = $56,250

The following step would be taken to determine the value of s

Substitute for b in equation 1

s + $56,250 = $90,000

$90,000 - $56,250 = s

s = $33,750

Dollar amount for the return on stocks = $33,750 x 0.1 = $3375

Dollar amount for the return on bonds = $56,250 x 0,02 = $1125

To learn more about simultaneous equations, please check: brainly.com/question/23589883?referrer=searchResults

7 0

3 years ago

The normal price of a jacket is £54 in a sale, the price is reduced by 30% what is the sale price

elena55 [62]

Answer:

£37.80

Step-by-step explanation:

To find the sale price of a jacket during a 30% off sale, first subtract 0.30 from 1.00, obtaining 0.70, and then multiply the regular price (£54) by 0.70:

0.70(£54) = £37.80

7 0

4 years ago

Please help me: What's the domain? What's the range? Is it a function?

VladimirAG [237]

Answer:

$\displaystyle Yes \\ Range: Set-Builder\:Notation → [f(x)|-2 ≤ f(x) ≤ 4] \\ Interval\:Notation → [-2, 4] \\ \\ Domain: Set-Builder\:Notation → [x|0 ≤ x ≤ 7] \\ Interval\:Notation → [0, 7]$

Step-by-step explanation:

Just by looking at the graph vertically and horisontally, you can tell what the range and domain is, depending on whether the segments are closed or opened.

* This is a function because it passes the vertical line test.

** This is kind of like a sine wave.

I am joyous to assist you anytime.

6 0

3 years ago

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