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r-ruslan [8.4K]
3 years ago
14

HURRY ASAP WILL GIVE BRAINLIEST TO THE FIRST PERSON NO LINKS!!!!

Mathematics
1 answer:
yawa3891 [41]3 years ago
8 0

Answer: It's the third one with 14 to 2, 28 to 4, and 42 to 6.

Step-by-step explanation:

They all have a proportion of 7 to 1.

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The sum of two numbers is 67 and the difference is 13 . What are the numbers? PLEASE HELP IM NEW TO THIS AND WANT MY GRADES TO C
Nikitich [7]

Answer:

The two numbers are 40, and 27.

Explanation:

Since there are only two numbers, with two different aspects, you can just make

a system, and solve.

A sum of two numbers adding up to 67 can be modeled by: x + y = 67.

A difference of those same two numbers being 13 can be modeled by: x – y = 13.

You can add the two equations together to eliminate the y value because the -y and y will cancel out:

x + y = 67.

+ x – y = 13.

And you get: 2x = 80.

Now to find x, just divide by 2 on both sides to cancel out the coefficient of 2 in 2x:

2x = 80

÷2 ÷2

x = 40.

So the first number is 40.

Since we know the first number, we can immediately find the other number by substituting it into the first equation.

x = 40 → x + y = 67

(40) + y = 67

-40. -40

Subtract from both sides to cancel the constant terms.

Then you will get that y or the second number is y = 27.

This is true because 40 + 27 = 67, and 40 - 27 = 13.

6 0
3 years ago
If the volume of a cubical box is 1728cm find its total surface area​
Lera25 [3.4K]

Answer:

<h2>864 cm²</h2>

Step-by-step explanation:

The formula of a volume of a cube:

V=s^3

<em>s</em> - <em>edge</em>

We have

V=1728\ cm^3

Substitute:

s^3=1728\to s=\sqrt[3]{1728}\\\\s=12\ cm[/texbecause[tex]12^3=1728

The formula of a surface area of a cube:

SA=6s^2

(6 square faces of a cube)

Substitute:

SA=6(12^2)=6(144)=864\ cm^2

8 0
4 years ago
Read 2 more answers
Proposition 2.30. Suppose X and Y are topological spaces, and f : X → Y is any map. (a) f is continuous if and only if f (A c f(
V125BC [204]

Answer:

54

Step-by-step explanation:

lkjiuyog

4 0
3 years ago
Help please !!!!!!! thanks, will give brainliest
ludmilkaskok [199]

The correct answer is D. I've had that question before


8 0
3 years ago
Write an explicit formula for the sequence 8, 6, 4, 2, 0, ... Then find a 14.
disa [49]

Answer:

the answer is -2n+10;-18

8 0
3 years ago
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