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Anna11 [10]
4 years ago
11

What does n/5 - 3n/10 =1/5

Mathematics
1 answer:
dsp734 years ago
8 0
I assume you're looking for n.
so, take 2n/10-3n/10=2/10. Making everything have the same denominator is always easier.

This way, you have -n/10=2/10.

n=-2.
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Serenity picked 75% of the apples of a tree in her backyard. If she picked 30 apples, how many apples were on the tree to begin
Stells [14]

Given:

Serenity picked 75% of the apples of a tree in her backyard.

She picked 30 apples.

To find:

The number of apples on the tree in the beginning.

Solution:

Let x be the number of apples on the tree in the beginning.

Serenity picked 75% of the apples of a tree in her backyard.

Number of apples picked = 75% of x

                                           = \dfrac{75}{100}x

                                           = \dfrac{3}{4}x

She picked 30 apples.

\dfrac{3}{4}x=30

Multiply both sides by 4.

3x=4\times 30

3x=120

Divide both sides by 3.

x=\dfrac{120}{3}

x=40

Therefore, the number of apples on the tree in the beginning is 40.

3 0
3 years ago
Please help me with both of these questions I’m supper stuck
Vitek1552 [10]

Answer:

ONE SOLUTION

Step-by-step explanation:

When two points on a line are given, the equation of the line is given by the formula:

             $ \frac{y - y_1}{y_2 - y_1} = \frac{x - x_1}{x_2 - x_1} $

where $ (x_1, y_1) $ and $ (x_2, y_2) $ are the points on the line.

Here, the first set of points are: $ (-1, 3) $ and $ (0, 1) $.

Therefore, $ (x_1, y_1) = (-1, 3) $ and $ (x_2,y_2) = (0, 1) $.

The line passing through this is given by:

$ \frac{y - 3}{1 - 3} = \frac{x + 1}{1} $

$ \implies y - 3 = -2x - 2 $

∴ 2x + y - 1 =0

Now, for the second line, the points are:

$ (x_1, y_1) = (1, 4) $ and $ (x_2, y_2) = (0, 2) $.

Therefore, $ \frac{y - 4}{-2} = \frac{x - 1}{-1} $

$ \implies -y + 4 = -2x + 2 $

∴ 2x - y + 2 = 0

Now, to determine the number of solutions the two equations have, we solve these two equations,

Adding Eqn(1) and Eqn(2) we get:

4x = -1

$ \implies x = \frac{-1}{4} $

And $ y = \frac{3}{2} $.

Since, we arrive at unique values of 'x' and 'y', we say the lines have only one unique solution.

5 0
4 years ago
Pls someone help quick
koban [17]

Answer: Aleah i think the answer is g

Step-by-step explanation:

6 0
3 years ago
John gets 3 Dollars and 12 cents everyday by mowing lawns, but he's been noticing that every time he mows his lawns he get 0.2 m
emmainna [20.7K]
The correct answer is $21.84

Hope this helps :D
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3 0
3 years ago
Work out the size of the angle marked t
tiny-mole [99]

Answer:

<h2>35°</h2>

Step-by-step explanation:

This is an isoceles triangle

And as we all know an isoceles triangle has two equal base angles.

And we also know that the sum of all interior angles of the triangle is 180°

So based on this we can form an algebraic equation of solve for angke t (Let's do it :))

110 + 2t = 180 \\ 2t = 180 - 110 \\ 2t = 70 \\ t  =  \frac{70}{2}  \\ t = 35

So the base angle is 35°

3 0
3 years ago
Read 2 more answers
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