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aksik [14]
3 years ago
14

What is a quick way to solve ratios other than adding them

Mathematics
2 answers:
kykrilka [37]3 years ago
7 0
First 0:0 second 0/0 third 0.0
dezoksy [38]3 years ago
3 0
A ratio can be written in three different ways:
x to y 
x:y
x/y
These all mean dividing.
For example, one package contains 20 cookies so the equation would be:
20/1 so to find how many cookies are in 2 packages you would multiply 20 by 2 which would equal 40 so the equation would equal 40/2 which means 40 cookies in 2 packages.
You might be interested in
Find the vector projection of B onto A if A = 5i + 11j – 2k,B = 4i + 7k​
valkas [14]

Answer:

\frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\

Step-by-step explanation:

Given A = 5i + 11j – 2k and B = 4i + 7k​, the vector projection of B unto a is expressed as proj_ab = \dfrac{b.a}{||a||^2} * a

b.a = (5i + 11j – 2k)*( 4i + 0j + 7k)

note that i.i = j.j = k.k  =1

b.a = 5(4)+11(0)-2(7)

b.a = 20-14

b.a = 6

||a|| = √5²+11²+(-2)²

||a|| = √25+121+4

||a|| = √130

square both sides

||a||² = (√130)

||a||²  = 130

proj_ab = \dfrac{6}{130} * (5i+11j-2k)\\\\proj_ab = \frac{30}{130} i+\frac{11}{130} j-\frac{12}{130} k\\\\proj_ab = \frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\\\

<em>Hence the projection of b unto a is expressed as </em>\frac{3}{13} i+\frac{11}{130} j-\frac{6}{65} k\\<em></em>

7 0
3 years ago
PLEASEEEEE HELP MEEEEEE!! ILL GIVE BRAINLIEST + POINTSSS!! :)
Anton [14]

The probability of “landing” in the shaded region to the nearest hundredth is equal to 0.79 or 79.0%.

<h3>How to determine the probability?</h3>

First of all, we would determine the area of the given geometric shapes.

For the square, we have:

Mathematically, the area of a square can be calculated by using this formula;

Area = x²

Area = 50²

Area = 2500 ft².

For the circle, we have:

Mathematically, the area of a circle can be calculated by using this formula;

Area = πd²/4

Area = (3.142 × 50²)/4

Area = 1,963.75 ft².

Now, we can determine the probability as follows:

Probability = 1963.75/2500

Probability = 0.79 or 79.0%.

<h3>When the side length is 40 ft.</h3>

Area = x²

Area = 40²

Area = 1600 ft².

For the circle, we have:

Area = πd²/4

Area = (3.142 × 40²)/4

Area = 1256.8 ft².

Probability = 1256.8/1600

Probability = 0.79 or 79.0%.

Read more on probability here: brainly.com/question/24441555

#SPJ1

8 0
2 years ago
Pls answer the question (I'll give brainliest)
AlekseyPX

Answer:

10.6 oz

Step-by-step explanation:

To find the answer, we need to divide 2.65/0.25

This will give us how many ounces she bought

So our final answer is…

10.6 oz!

If this was helpful, please award brainliest I would REALLY appreciate it!

5 0
2 years ago
What is the image of (4,-7) after a reflection over the y-axis?
Nitella [24]

Answer:

It would be a point which is at (-4,-7).

8 0
3 years ago
(AAAA HELP PLS XD WILL MARK BRAINLIEST) Nhia is setting up a marble tournament for the kids in her
aksik [14]

Given that we have 47 kids and each kid needs 10 marbles, find out how many bags of 24 marbles will we need.

First, we will multiply 47 by 10 to get the amount of marbles needed.

47 x 10 = 470

So, that means we need 470 marbles in total.

Then, we divide 470 by 24 to see how many bags of 24 marbles 470 marbles is.

470 / 24 = 19.5833

Since, we can't have 19.5833 bags, we have to check what it would be if we only used 19.

19 x 24 = 456

470 - 456 = 14

Since, 18 is the closest number of bags but it has less than 470 it would not be correct.

Therefore, the best answer would be B. 25 since it is better to have extra marbles but not a very wide margin.

4 0
3 years ago
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