MATHEMATICS MIDDLE SCHOOL

Which fraction is equivalent to 6 over -8
-8/6
-6/8
-6 over -8
8/6

Answers

Answer 1
Answer: According to statement, it would be: 6/-8
which can be re-write as: -6/8

In short, Your Answer would be Option B

Hope this helps!
Answer 2
Answer: it is the second one -6/8 

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Round to the given place value hundreds and tens 547 , 609 and 990

Answers

the first number will be 500
the second number will be 600
and the last number will be 990
1. 500, 550
2. 600, 610
3. 1000, 910

These triangles are similar. find Y and X

Answers

It these triangles are similar, then the sides of the triangles are in proportion:

(y)/(10)=(y+4)/(15)      cross multiply

15y=10(y+4)    use distributive property

15y=10y+40       subtract 10y from both sides

5y=40           divide both sides by 5

\boxed{y=8}


(x)/(4)=(6)/(8)            cross multiply

8x=(4)(6)

8x=24           divide both sides by 8

\boxed{x=3}

HELP PLEASEDory and Nemo go to Taco Bell for lunch. Dory orders three soft tacos and three double deckers for $11.25. Nemo pays $10.00 for four soft tacos and two Double Deckers. Write a system of equations that represents the lunch orders for Dory and Nemo. Use x to represent soft tacos and y to represent Double Deckers.

Answers

x = soft tacos
y = double deckers

Dory:
3x + 3y = 11.25 

Nemo:
4x + 2y = 10.00

---Now to solve for x and y---
---We find LCM of either x or y then make them cancel each other---
Dory multiply by 2:
6x + 6y = 22.50

Nemo multiply by 3:
12x + 6y = 30.00

--eliminate y--- 
Nemo subtract Dory:
6x = 7.50
Therefore x = 7.50 ÷ 6 = 1.25
---Now substitute x = 1.25 in either equation.---

Dory:
3.75 + 3y = 11.25
Therefore 3y = 11.25 - 3.75
therefore 3y = 7.50
there fore y = 2.50

y = 2.50 , x = 1.25

Sorry, that this is so long, I hope you understand. This is called simultaneous equations, you can read up on it.

Answer:

Dory: 3x+3y=11.25

Nemo: 4x+2y=10.00

Step-by-step explanation:

Have a good day :)

Isn’t it easier to write sin 2theta = 2 sin theta and not bother memorizing the double-angle formula

Answers

First off, sin 2 theta = 2 sin theta cos theta. Also, the answer to your question is no. There are multiple double angle formulas, and it is important that you remember them so that you can answer questions correctly.

A migrating bird flies 420 miles in 12 hours . How many miles does it fly in 7 hours

Answers

first find miles per hour then multiply by 7
so 420/12=35
35 times7=245 mph
420 divided by 12 = 35 hours flown by the bird in 1 hour.
35 x 7(hours) = 245 miles flown in 7 hours

the cost price of machine is 2,50,000.if the rate of depreciation is 10% per year find the depreciation in price of machine after two years.​

Answers

Step-by-step explanation:

cost price= 250000

depreciation= 10%

time or years= 2

depreciation price = cost price× depreciation%

2,50,000×10%

2,50,000×10/100

25,000

then 2 years depreciation = 1 year depreciation price ×number of years

25,000× 2

50,000

therefore depreciation price of machine after 2 years is 50,000
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