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Vsevolod [243]
3 years ago
5

The sum of two numbers is 21 The second number is six times the first number

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer:

3+18=21

Step-by-step explanation:

first see the second number

let us assume as x & y

3+ (3×6)= 21

3+18=21

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You have just bought a new television and it has an aspect ratio of 16:9. The screen on the television is 65 inches. What is the
sp2606 [1]

Answer:

A

Step-by-step explanation:

The TV to have a 16:9 ratio and have a diagonal of 65 inches must have a length & width whose squares add to 4,225 (65 squared) and whose ratio length and width simplifies to 16/9.

B is not an option because 16^2+9^2\neq 65^2.

C is not an option because \frac{42.59}{21.22}\neq \frac{16}{9} which is 1.777777777778 as a decimal.

D fails for the same reason as C.

Therefore A is the solution because \frac{56.65}{31.86}=\frac{16}{9} and 65.65^2+31.86^2 = 65^2


4 0
3 years ago
Which is not a representation of the equation y = 0.5x - 2?
Studentka2010 [4]

Answer:

D is incorrect so ur answer is D

8 0
3 years ago
What is 1856.4÷5.2? pls help me!
kaheart [24]
The answer is 357 hope it helped
8 0
4 years ago
What is 4+(−1 2/3) simplified?
Vika [28.1K]

Answer:

i think the answer is 7/3

Step-by-step explanation:

hope it helps hun :)

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4 0
2 years ago
Read 2 more answers
Use the substitution method to solve the given system of equations. Write your answer as an ordered pair, (x, y).
Gnoma [55]

Answer:

(-3, -2)

Step-by-step explanation:

Look at the second equation, we can easily rearrange it to make x the subject.

x - 4y = 5

x = 4y + 5

Now lets put that into the second equation

2x - 2y = -2

2(4y + 5) - 2y = -2

6y + 10 = -2

6y = -12

y = -2

Now lets find x!

x = 4y + 5

x = 4(-2) + 5

x = -3

Now lets format the answer like the question says (ordered pair)

(-3, -2)

Recap: We used substitution and made an equation to work out one of the variables first, then found the second variable using the first.

3 0
3 years ago
Read 2 more answers
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