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Stolb23 [73]
2 years ago
5

System of equations!!!

Mathematics
1 answer:
ololo11 [35]2 years ago
5 0

Answer:

Step-by-step explanation:

1. x^2-x-20=3x-15

x=5, x=1 substitute

y=3*5-15 = 0

y=3*(-1)-15 = -18

Solution: (5,0) & (-1,-18)

2. x^2+2x+3=x+5

x=-2, x=1 substitute

y= -2+5 = 3

y=1+5 = 6

Solution: (-2,3) & (1,6)

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List all the factors of 16 ​
Ronch [10]

Answer:

1,2,4,8,16

Step-by-step explanation:

prime factorization: 2x2x2x2 =16

4 0
2 years ago
Find the area please don’t lie to me
astra-53 [7]

Answer:

<h2>108 yd²</h2>

Step-by-step explanation:

The formula of an area of a trapezoid:

A=\dfrac{b_1+b_2}{2}\cdot h

<em>b₁, b₂</em><em> - bases</em>

<em>h</em><em> - height</em>

From the picture we have

b_1=19yd,\ b_2=5yd,\ h=9yd

Substitute:

A=\dfrac{19+5}{2}\cdot9=\dfrac{24}{2}\cdot9=12\cdot9=108\ yd^2

3 0
3 years ago
In the number 3,394,143 the 4 in the tens place is (blank) the value of the 4 in the thousands place.
cluponka [151]

it is 0.01 times the value because it is a hundreds time smaller than the other four.

5 0
3 years ago
Find the value of x so that the function has the given value.<br><br> t(x)=-4x-5 <br><br> t(x)=3
Sveta_85 [38]

Answer:

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4 0
2 years ago
Complete the rational operation <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7Bx%20-%205%7D%20%20-%20%20%5Cfrac%7Bx%7
prisoha [69]
We have
                             3 / (x-5) - x/5
We make the GCF and we have
                                    15/[ 5(x-5) ] - x(x-5)/[ 5(x-5)]
                                  = [ 15 - x(x-5) ]  [5(x-5)]
                                  = [ 15 - x^2 + 5x] / [ 5 (x-5) ]
                                  = [15 - x^2 + 5x]/[5x - 25]
An answer to your question is (15-x^2+5x)/(5x-25)
6 0
3 years ago
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