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satela [25.4K]
3 years ago
5

For question 19 and 20 can you please solve! Ill award 50 points to however does it! Thank you soo much!

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0

Answer:

19--

(2x-3) (x+2)=0

20--

x = 3,-5

Step-by-step explanation:

Fittoniya [83]3 years ago
4 0

Answer:

Step-by-step explanation:

19.

2x^2+x-6=0

x^2+x-12=0

(x+2)(2x-3)=0

x=-2,3/2

20.

x^2+8x+15=0

(x+3)(x+5)=0

x=-3,-5

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the length of a rectangle is 5 less than twice the width. If the perimeter of the rectangle is 146 centimeters, find the dimensi
d1i1m1o1n [39]

Answer:

26x47

Step-by-step explanation:

To calculate the length of the rectangle we would do 2(2x - 5) + 2(x) = 146

We simplify and get 6x - 10 = 146,

then divide both side by 6 and plus 10 both sides,

we will get

x = 26

Now we've found one of the length,

to find the other side we do 26 * 2 = 52, and subtract 52 from 146,

which would get 94, then we divide it by 2

94/2 = 47

The dimensions is 26x47

7 0
3 years ago
Help me asap!!!!!!!!
nikitadnepr [17]

Answer:

the last option

Step-by-step explanation:

8 0
2 years ago
CAN U SOLVE THIS
balandron [24]

Hello!

To the value of b, or the y-intercept, we need to substitute an ordered pair/point into the given equation.

Since we are given two points, we can use those two points to find two different equations.

Remember that ordered pairs are written as (x, y).

A(-2, 4)

y = -3x + b

4 = -3(-2) + b

4 = 6 + b (subtract 6 from both sides)

-2 = b

A) Therefore, the equation of the first ordered pair is y = -3x - 2.

B(5, 2)

2 = -3(5) + b

2 = -15 + b (add 15 to both sides)

17 = b

B) The equation of the second ordered pair is y= -3x + 17.

<u>Final answers</u>:

  • A) y = -3x - 2
  • B) y = -3x + 17
8 0
3 years ago
PLEASE HELP EASY!!
Orlov [11]

Answer:

$2000

Step-by-step explanation:

The amount of interest you pay (for simple interest) is the product of the original amount, the interest rate and the time in years. Let x be the original amount (how much money she borrowed):

720=x(0.09)(4)

720=0.36x

x=2000

8 0
3 years ago
The sides of a square are each 6.5 centimeters long. The square is
Taya2010 [7]
Sorry really don’t know just make a guess
6 0
3 years ago
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