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scoray [572]
3 years ago
6

I need help on this, if anyone knows how to do this can you help me out pls

Mathematics
1 answer:
ASHA 777 [7]3 years ago
6 0
<h3>Answer:  (3, 0)</h3>

=================================================

Explanation:

Let's isolate x in the first equation.

x-2y = 3

x = 3+2y

Then we'll plug this into the second equation

Afterwards, solve for y.

2x + 4y = 6

2(3+2y)+4y = 6

6+4y+4y = 6

8y+6 = 6

8y = 6-6

8y = 0

y = 0/8

y = 0

Use this to find x.

x = 3+2y

x = 3+2(0)

x = 3

The solution is therefore (x,y) = (3, 0)

If you were to graph both lines, then they would intersect at the location (3,0).

-----------------------------

Checking the answer:

Plug x = 3 and y = 0 into the first equation.

x-2y = 3

3-2(0) = 3

3 - 0 = 3

3 = 3 that works

Repeat for the other equation

2x+4y = 6

2(3) + 4(0) = 6

6 + 0 = 6

6 = 6 that works as well

Both equations are true when (x,y) = (3,0).

The solution is confirmed.

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denis-greek [22]

Answer:

There would be 63 grams of protein in 9 ounces of tuna.  

Step-by-step explanation:

Equivalent ratios compare two different quantities the have the same rate regardless of the amount.  In this example, for every 3 ounces of tuna, there are 21 grams of protein.  We can write this as a ratio of:  3/21.  Like fractions, we can simplify ratios by dividing the numerator and denominator by the same greatest common factor.  In this case, we would divide both the numerator and denominator by 3:  (3÷3)/(21÷3) = 1/7. So, our new ratio is for every ounce of tuna, we have 7 grams of protein.  Using equivalent ratios, we can set up our ratios to solve for the grams of protein in 9 ounces of tuna:  1/7 = 9/x.  Since we have to multiply both the numerator and denominator by the same factor, in this case 9, then our x = 63 grams of protein.

5 0
3 years ago
What do you multiply by 80 to get 55
Ray Of Light [21]

Answer:

\frac{11}{16}

Step-by-step explanation:

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Myra wants to practice the piano for at least 22 minutes each day. Which of the following inequalities represents the number of
schepotkina [342]

Answer:

x\geq 22

Step-by-step explanation:

If someone wants to practice for at least 22 minutes a day, they want to practice 22 minutes or more. This is the same as greater than or equal to, and  we want the minutes practices to be greater than or equal to 22. We can assume minutes practiced is x, and create the inequality x\geq 22.

Hope this helped!

4 0
4 years ago
Can someone who is eligible help me with this.?
Murrr4er [49]

Answer:

Step-by-step explanation:

volume of one cube = ½×½×½ = ⅛ cm³

volume of prism = 5×3×6 = 90 cm³

90/(⅛) = 720 cubes to fill the prism.

volume of bottom layer of cubes = 5×3×½ = 7.5 cm³

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4 0
3 years ago
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salantis [7]

Answer:

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Step-by-step explanation:

We know that  √ 42  will lie between  √ 36  and  √ 49

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3 0
3 years ago
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