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2 years ago

Hey gus i have a end of half term test soon on maths do you know what the best way is to revise

Mathematics

2 answers:

boyakko [2]2 years ago

8 0

Answer:

You can go through your notes, go step by step of the equation to understand what you have to do

Step-by-step explanation:

valentinak56 [21]2 years ago

7 0

Write notes on key info and key equations

Read through notes

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For any two integers x and y, l x + y l = l x | + l y l<br><br> true or false?

melomori [17]

True because of the absolute value bars

7 0

2 years ago

In this line of circles, the ratio of red circles to blue circles is 1:3 How many more circles would need to be added to make th

zaharov [31]

Answer:

The number of red circles to be added would be equal to 8 times the original amount of red circles

Step-by-step explanation:

Let

x ----> the number of red circles

y ----> the number of blue circles

Originally

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

$y=3x$ ----> equation A

How many more circles would need to be added to make the ratio of red to blue 3:1

Let

n ----> the number of additional red circles

$\frac{x+n}{y}=\frac{3}{1}$ ----> equation B

substitute equation A in equation B

$\frac{x+n}{3x}=\frac{3}{1}$

solve for n

$x+n=9x\\n=9x-x\\n=8x$

therefore

The number of red circles to be added would be equal to 8 times the original amount of red circles

5 0

3 years ago

SOMEONE PLS HELP WILL GIVE BRAINLIEST ANSWER IF CORRECT

Mamont248 [21]

Complementary angles add up to 90°
and supplementary angles add up to 180°

Add the two angles together
82+98=180
So the measure of these two angles are supplementary

6 0

2 years ago

linda's container of cranberry juice holds 200 milliliters. Harry's container holds 7/8 as much juice. How many juice do two con

Svet_ta [14]

The first container contains 200 mL. The second container contains 7/8 that much so the second container contains 200*7/8. The second container holds 175 mL. Together the containers contain 200+175 mL, so 375 mL in total.

6 0

3 years ago

Dan mows 1/4 of his grandmother's lawn and uses 1/2 gallon of gas. What fraction of the lawn can Dan mow per gallon?

goldfiish [28.3K]

$\frac{1}{2}$ of the grandmother's lawn Dan can mow per gallon.

Option C

<u>Solution:</u>

Given that, mowing $\frac{1}{4}$ uses $\frac{1}{2}$ gallon of gas.

To find: The fraction of the lawn can Dan mow per gallon

According to unitary method,

$\frac{1}{2}$ gallon of gas is required to mow $\frac{1}{4}$ of lawn that is $\frac{1}{2}\rightarrow \frac{1}{4}$

Therefore, 1 gallon of gas will be required to mow $\frac{1}{2}\times2\rightarrow \frac{1}{4}\frac2$

$\Rightarrow1 \text{ gallon }\rightarrow \frac{1}{2} \text{ of lawn}$

Therefore, one gallon will be enough to mow $\frac{1}{2}$ of lawn.

Unitary method:

The unitary method is a technique to solve a problem by finding the value of a single unit first, and then finding the required value by multiplying the single unit value. In essence, this method is used to find the value of a unit from the value of a multiple, and hence the value of a multiple.

5 0

2 years ago