MATHEMATICS MIDDLE SCHOOL

X-Y3-4
9-?
18-24

What number is missing from the table of equivalent ratios?
A) 10
B) 12
C) 15
D) 16

Answers

Answer 1
Answer: b) 12

3•3=9 so 4•3=12
Answer 2
Answer: The answer is B) 12. This is because 3 times 6 is 18 and 4 times 6 is 24. 3 times 3 is nine so the answer must be 4 times 3. That is 12.

Related Questions

WHOEVER IS RIGHT WILL GET BRAINLIST
What is 1.36,1.3 and 1.63 from least to greatest
amy has 72 Suites in a bag she keeps one fourth of them for herself and share the rest with their friends how many sweets will he get her friends
Explain why 2.15 and-2.15 opposite
Henry is making a recipe for biscuits. A recipe calls for 5/10 kilogram flour and 9/100 kilogram sugar.how much sugar and flour will he have?

I am very weak in this help me please. There are 1800 gym members in total.3/4 are aged 25 to59 years, 1/5 are over 60 years and remainder are under 25 years. How many members are under 25 years?

Answers

Steps to solve:

1. 3/4+1/5
Change both denominator to the same- 4*5=20
So far its: ?/20 + ?/20

2. For the first fraction (3/4) we do 3*5=15
Because when we found the denominators we multiplied each denominator by each other. For the second one we do pretty much the same. We do 1*4=4.

3. The final equation is 15/20 + 4/20.
Now add both numerators, which is 19. You leave the denominator as it is. So the final fraction is 19/20.

4. Next to get a full fraction from 19/20 you need 1/20 to get 20/20=1.
On the calculator you type in: 1/20*1800
OR... 1800/20
OR... (18/2)100

So the final answer is 90. 1800/20=90
= 90 members under the age of 25.
To solve this, we add , 3/4 + 1/5

To add fractions we different denominators we have to find a common multiple.. 4 * 5 = 20   and 5 * 4 = 20

We multiply everything by 5 (for 3/4), to get 15/20
We multiply everything by 4 (for 1/5), to get 4/20

= 15/20 + 4/20 (add the numerators)
= 19/20

If 19/20 people are 25 to 60+, 
that means 1/20 of people are under 25

We apply this to 1800 gym members:

 1800 / 20        <- get's us 1/20 of 1800
= 90

There are 90 members under 25

How can I solve this system of linear equations by substitution 3x-2y=9 and y=2x-7

Answers

y=2x-7
therfor we can SUBSITUTE 2x-7 for y whereever we see y in the other equation

3x-2(2x-7)=9
3x-4x+14=9
-x+14=9
minus 14 both sides
-x=-5
mulitly -1
x=5

sub back

y=2x-7
y=2(5)-7
y=10-7
y=3

(5,3)

Please help me with this problem

Answers

Answer:

½

Explanation:

According to the Unit Circle, tan240° [when it falls in between 180° and 270°] is √3, so we plug this into the sine function to get this:

sin240° - 210° → sin30° >> ½

If you are ever in need of assistance, do not hesitate to let me know by subscribing to my You-Tube channel [USERNAME: MATHEMATICS WIZARD], and as always, I am joyous to assist anyone at any time.

** I do not have Unit Circle video uploaded yet, but if I need to, just notify me in the comments or on of course, You-Tube.

*** Plus, we need to make sure that the x-value falls in between 0 and π\2, which it did, so no need to worry.

**** Now, 60° is the main possible answer, however, it falls in between 0° and 90°, not 180° and 270°.

Rena and Grace like to share stickers. If Rena gives 60 stickers to Grace, the ratio of Rena to Grace's stickers will be 1 : 3. If Rena gives 70 stickers to Grace, their ratio will be 1 : 7. How many stickers does Rena have?

Answers