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Rainbow [258]
3 years ago
6

Please help me and my daughter.

Mathematics
2 answers:
valina [46]3 years ago
7 0

Step-by-step explanation:

3x2−7x−20=03x2-7x-20=0

Use the quadratic formula to find the solutions.

−b±√b2−4(ac)2a-b±b2-4(ac)2a

Substitute the values a=3a=3, b=−7b=-7, and c=−20c=-20 into the quadratic formula and solve for xx.

7±√(−7)2−4⋅(3⋅−20)2⋅37±(-7)2-4⋅(3⋅-20)2⋅3

Simplify.

Tap for more steps...

x=7±176x=7±176

The final answer is the combination of both solutions.

x=4,−53

garri49 [273]3 years ago
3 0

Answer:

you can either factorise or use tge formula method

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6 0
3 years ago
THIS IS URGENT 60 POINTS
IceJOKER [234]

Answer:

ok so first lets find the revunue in 2015 so

2.4*10=24

so their revunie was 24 dollars(i hope this is in like 24k or something bc this company is going bankrupt other wise)

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6 0
2 years ago
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Simplify each answer into a fraction, Please show work as well!
scoray [572]

Answer: 1) 8/15 2) 2 4/9 3) -13/45

Step-by-step explanation:

1/5 + 1/3 = 6/30 + 10/30 = 16/30 = 8/15

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7 0
2 years ago
I don't know how to solve this
sergiy2304 [10]
The answer that I got was side  WX = 12 inches

It says that WY is congruent to XY which means that they are the same. That means that XY is also 3m-4. It also says that the perimeter of the triangle is 76 inches.

With this information I set up an equation:

3m-4 + 3m-4 +m = 76

(The number on the right side is the perimeter given to us in the problem and the numbers on the left side are the 3 side lengths).

I combined like terms on the left side and ended up with:

7m-8=76 

I added 8 to both sides of the equation and got 7m=84.

Finally I divided both sides by 7 and got m=12

m is equivalent to side WX..

Hope this helps!
4 0
3 years ago
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