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padilas [110]
3 years ago
9

Solve the system of equations 4x-5y=-64x−5y=−6 and -6x+7y=12−6x+7y=12 by combining the equations.

Mathematics
1 answer:
Aleksandr [31]3 years ago
7 0

Answer: let me think

Step-by-step explanation:

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Solve the system by substitution 5x+3y=8 3x+y=8
Yakvenalex [24]
3x+y=8
y=8-3x

5x+3(8-3x)=8
5x+24-9x=8
-4x+24=8
-4x=-16
x=4

5x+3y=8
5(4)+3y=8
20+3y=8
3y=-12
Y=-4

5x+3y=8
5(4)+3(-4)=8
20+-12=8
8=8
4 0
4 years ago
Given x=-3, y=6, and z=-4 xz/-2y
zimovet [89]

Answer:

-1

Step-by-step explanation:

sub in the values of x, y and z into the equation

you get:

(-3)(-4)/(-2)(6)

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= -1

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3 years ago
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Elizeabeth bought a necklace that has a mass of 35 grams which measure is equivlent to 35 grams
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If you were to convert the measure of grams to kilograms it would me 35 grams= 0.035 grams
6 0
3 years ago
If you have 3/8 of one pie what does the denominator tells you
Viktor [21]
The denominator tells you the total amount of pieces.
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3 years ago
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A bank loaned out $8200, part of it at a rate of 7.9% per year and the rest of it at a rate of 7.4% per year. The total amount o
Lady bird [3.3K]

The amount that the bank loaned out at 7.9% is $1,574.00

How do represent the amounts lent at different rates?

On the assumption that x amount was loaned at 7.9% and that the remaining amount, (8,200-x) was loan out at 7.4%, we can determine the interest charged on each loan as the loan multiplied by the interest rate

interest on 7.9% loan=7.9%*x=0.079x

interest on 7.4% loan=7.4%*(8200-x)

interest on 7.4% loan=606.80-0.074x

total interest=0.079x+606.80-0.074x

total interest=0.005x+606.80

total interest on loans=614.67

614.67=0.005x+606.80

614.67-606.80=0.005x

7.87=0.005x

x=7.87/0.005

x=amount loaned at 7.9%=$1,574.00

y=$8200-$1574

y=$6,626.00

Find out more about bank loan interest rate on:brainly.com/question/20796174

#SPJ1

3 0
2 years ago
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