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Digiron [165]
3 years ago
15

For the following system, use the second equation to make a substitution for y in the first equation.

Mathematics
1 answer:
alisha [4.7K]3 years ago
7 0

Answer:

Option A:  3x + 5x - 4 = 1

Step-by-step explanation:

Given equations:

3x + y = 1  ------------ eq1

y + 4 = 5x ---------- eq2

eq2 can also be written as:

y = 5x - 4 ----------- eq3

By substituting value of y from eq 3 into eq1, the resulting equation will be:

3x + 5x - 4 = 1

i hope it will help you!

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HELPPP
Mazyrski [523]

Answer:

Hello,

Step-by-step explanation:

y-intercept: x=0 ,f(0)=-10

x^3-8x^2+17x-10\\\\=x^3-5x^2-3x^2+15x+2x-10\\\\=x^2(x-5)-3x(x-5)+2(x-5)\\\\=(x-5)(x^2-3x+2)\\\\=(x-5)(x^2-x-2x+2)\\\\=(x-5)(x(x-1)-2(x-1))\\\\=(x-5)(x-1)(x-2)\\

x-intercepts are: 5,1,2.

6 0
2 years ago
Liam wants to buy a car. He has $100. The car that he wants costs $120,000. His parents is willing to give him $1,300. How long
mario62 [17]
Suspecting that his parents are going to give him $1,300 continually you would solve like this

$120,000-$100= $19,900
$19,900/$1,300= 92.23
92.23 is the amount of $1,300 donations it would take from his parents, so if he was getting $1,300 month it would take 92.23 months
5 0
2 years ago
Write as a fraction and simplify. (use the symbol / in your answer).<br> 0.878787.....
Alika [10]

Answer:

.878787.. to a fraction is 29/33

Step-by-step explanation:

\frac{(0.87*100)-0}{99} = 87/99

Simplify 87/99, which is 29/33

3 0
3 years ago
The donut shop is 3 times as likely to sell a glazed donut as an apple donut . If the shop sells 231 glazed donuts, how many don
Vedmedyk [2.9K]

Answer

the number of  donuts sold is: 693

Step-by-step explanation:

i get this answer by taking:

231 x 3 = and that equal 693. this is the number  of donuts sold.

5 0
3 years ago
What's the answer of 75% of what number is 60
elena55 [62]
75% of 60
OF MEANS times
75/100 * 60
180/4
45 
the answer is 45
4 0
3 years ago
Read 2 more answers
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