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Tamiku [17]
3 years ago
10

Two-thirds a number plus 4 is 7.

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
8 0
The variable I am going to us is x. 

2/3x+4=7

That will be your algebraic expression.
Rudiy273 years ago
4 0
2/3 x n + 4 = 7. 

I believe it's this equation.
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Please help me im strugeling
Aleksandr [31]

Answer:

C

Step-by-step explanation:

Use distributive property  =====>  multiply everything inside the parentheses by 9 to get answer C

6 0
1 year ago
Help is needed please help
Anna007 [38]

You have to do Pythagorean theorem:

a^{2} +b^{2}  = c^{2}

"a" and "b" are the legs. In this case 7 is a leg and x is a leg

"c" is the hypotenuses, which is 19 here

so...

a = 7

b = x

c = 19

Plug the numbers above into the equation:

7^{2} + x^{2} = 19^{2}

49 +x^{2} = 361

Isolate x by subtracting 49 to both sides:

(49-49) + x^{2} = 361 - 49

x^{2} = 312

To solve for x you have to take the square root to both sides of the equation:

\sqrt{x^{2} } = \sqrt{312}

x = 17.6635

x = 17.7

Hope this helped!

6 0
3 years ago
Is 27/51 =18/34? explain your reasoning
yaroslaw [1]
They are = because both can be reduced to 9/17
Also their cross products are equal   27 x 34 = 18 x 51  - Both equal 918 so both fractions are equal to each other.
8 0
3 years ago
Read 2 more answers
How would you solve this?
gulaghasi [49]

Answer:

Step-by-step explanation:

Find the slope = -2/1

Find the y-intercept = 5

Go to graph

put a dot at (0,5)

since it's a negative slope you will go up 2 and left 1

draw your line

_________________________________________________

Find the slope = 3/1

Find the y-intercept = 0

go to graph

Put a dot at (0,0)

Since it is a positive slope you will go down 3 and left 1.

To find the slope and y-intercept use this formula=

y=mx+b

m=slope

b=y-intercept

I'm sorry I don't know how to do a check equation for these.

3 0
3 years ago
X^2 + 2x + 5 find the zeros
Dvinal [7]

Answer:

Step-by-step explanation:

This is what I got

8 0
3 years ago
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