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Mamont248 [21]
3 years ago
13

Write a quadratic equation in standard form that has two solutions, -10 and 3

Mathematics
1 answer:
vlada-n [284]3 years ago
7 0

 

\displaystyle\bf\\\\x_1=-10~~and~~x_2=3\\\\(x-x_1)(x-x_2)=0\\\\(x-(-10))(x-3)=0\\\\(x+10)(x-3)=0\\\\x^2+10x-3x -30=0\\\\\boxed{\bf x^2+7x - 30=0}

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4 years ago
The basketball boosters are selling school t-shirts for $20 and warm up pants for $45. Last week they sold 100 items and collect
lesya [120]

They sold 76 t-shirts and 24 warm up pants.

Step-by-step explanation:

Cost of one t-shirt = $20

Cost of warm up pants = $45

Total sold = 100

Worth of sold items = $2600

Let,

x be the number of t-shirts.

y be the number of warm up pants.

According to statement;

x+y=100    Eqn 1

20x+45y=2600   Eqn 2

Multiplying Eqn 1 by 20

20(x+y=100)\\20x+20y=2000\ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 2

(20x+45y)-(20x+20y)=2600-2000\\20x+45y-20x-20y=600\\25y=600\\

Dividing both sides by 25

\frac{25y}{25}=\frac{600}{25}\\y=24\\

Putting y=24 in Eqn 1

x+24=100\\x=100-24\\x=76

They sold 76 t-shirts and 24 warm up pants.

Keywords: linear equations, elimination method

Learn more about elimination method at:

  • brainly.com/question/4657040
  • brainly.com/question/4528757

#LearnwithBrainly

5 0
3 years ago
Y=2x + 4<br> y = 2(x + 2)<br> what is x
Oxana [17]

Answer:

I believe 1.) is x=y-4/2 and 2.) x=y-4/2 as well

Step-by-step explanation:

1.)

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2.)

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y-2=2x

-divide 2 on both sides-

x=y-2/4

I dont know exactly if this is correct, but i hope it helps! :)

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3 years ago
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strojnjashka [21]

Answer:

6 is the answer bc 24/4 equals 6


Step-by-step explanation:


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3 years ago
What is linear graph​
Whitepunk [10]

Answer:

A linear graph is nothing but a straight line or straight graph which is drawn on a plane connecting the points on x and y coordinates.

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3 years ago
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