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maw [93]
3 years ago
14

in order to solve the system of equations below , harvey multiplies each equation by a constant to eliminate the x terms.

Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

Answer:

14x + 6y = 10 \\  - 14x - 35y = 77

multiply all terms in the top equation by 2

multiply all terms in the second equation by -7. it would then add the two equations together to cancel out the variable x

You will then have two equations in terms of y

solve for y and either equation then substitute that value for y into the other equation then solve for x

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What is 14x + 9y + 6x<br><br><br><br> fastfastfastfast
Fudgin [204]

Answer:

20x+9y

Step-by-step explanation:

add the numbers that have the same variable(x in this problem)this is also called combining like terms. Then put the other numbers that have different variables. hope this helped

4 0
2 years ago
100% is 75 oranges what percent is 250 oranges?
Whitepunk [10]

Answer:

x=333.33%

Step-by-step explanation:

hello

you can resolve this by using the rule of 3,let´s see

75 oranges =100%

250 oranges = x%?

75 oranges* x%=250 oranges *100%

x=\frac{250*100}{75}

x=333.33%

Have a great day.

4 0
3 years ago
What is the value expression of 42 times 28
Aleksandr [31]
To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations.
8 0
2 years ago
Round this number to the nearest million<br><br> 135,458,267
Svet_ta [14]
1,000,000 is million
to round look at hundred thousand place or 100,000
see number before million (after comma)

if it is greater than or equal to 5, add 1 to current value of million and say all after is 0
if less than 5 then leave million value as is and make after 0


135,458,267
hundred thousand value is 4
4<5
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4 0
3 years ago
!LOOK AT THE PICTURE!<br><br>Simplify 15.6 divided by negative 3
muminat

Answer:

c -5.2 tell me if you need the explanation

Step-by-step explanation:

3 0
3 years ago
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