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PolarNik [594]
3 years ago
13

I need help ASAP (20points)

Mathematics
1 answer:
Leto [7]3 years ago
5 0

y = x^2 + 2x...eqn 1

y = 3x + 20...eqn 2

subst for y in eqn 1...

=> x^2 +2x = 3x +20

=> x^2 - x - 20 =0

=> (x-5) (x+4) =0

=> x = 5 or -4

for x =5, y = 35 (sub for x in eqn 1 or 2)

for x = -4, y = 8 (sub for x in eqn 1 or 2)

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<img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%2B5x%2B2" id="TexFormula1" title="2x^{2} +5x+2" alt="2x^{2} +5x+2" align="absm
Allushta [10]

Answer:

(2x+1)(x+2)

Step-by-step explanation:

Ez pz

5 0
2 years ago
HELPPPPP PLEASE WITH THIS
natulia [17]
0.000000000224 i think thats the answer could be wrong
7 0
3 years ago
If you save $3,000 at an interest rate of
juin [17]
Amount earned in compound interest = P(1 + r)^n; where P is the principal, r is the rate and n is the number of periods.

Amount = 3,000(1 + 14%)^6 = 3,000(1 + 0.14)^6 = 3,000(1.14)^6 = $6,584.91
7 0
2 years ago
Read 2 more answers
What is the slope of the graph of y= 3x -<br> 2x–5?<br> b<br> -5<br> 2<br> 3
Ksenya-84 [330]

Answer:

2

Step-by-step explanation:

8 0
2 years ago
X+1/3y=4 in slope intercept form EXPLAIN
skad [1K]

Answer:

Y = 12

Step-by-step explanation:

x + 1/3y = 4

Multiply both sides of the equation by 3.

3  ⋅  1 3  ⋅  y  =  3  ⋅  4

Simplify both sides of the equation:

1. Simplify both sides of the equation.

2. Multiply 3 by 4

How to simplify:

Cancel the common factor of 3

Rewrite the expression.

Multiply by 1

y  =  3  ⋅  4

Multiply 3 by 4

(12)

7 0
3 years ago
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