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snow_lady [41]
3 years ago
10

What is this equation factored 3x^2+7x-8=0

Mathematics
1 answer:
Vesna [10]3 years ago
7 0

Answer:

−

7

−

√

145

6

,

−

7

+

√

145

6

Step-by-step explanation:

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BIG POINTS!!!+BRAINLIEST ANSWER!!! BONUS!!!
Alekssandra [29.7K]

Answer:

30

Step-by-step explanation:

let number of questions in the test be x

9 of the first 10 questions are correct

so only x-10 questions remain

3/10 of the (x-10) = 3/10(x-10) questions are correct

scored 50% for the whole test

so only half of x = x/2 questions are correct

combining the above:

9+3/10(x-10) = x/2

9+3/10x-3=x/2

9-3=(1/2-3/10)x

1/5x=6

x=30

5 0
4 years ago
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I need help please I am having hard time doing this
Studentka2010 [4]
I believe it’s undefined *shrugs* haven’t done those in a while
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3 years ago
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43. Write a system of equations that is equivalent to each of the systems of equations below
olchik [2.2K]

1.

The <u>new system</u> of equivalent equations are 4x + 6y = 8 and 12x + 3y = 1

To get an equivalent equation, we multiply the original equation by a constant and replace it with the new equation.

So, 2x + 3y = 4 (1)

12x + 3y = 1 (2)

We multiply equation (1) by 2

So, 2x + 3y = 4 (1) × 2

⇒4x + 6y = 8 (3)

Replacing (1) by (3), we have

4x + 6y = 8 (3)

12x + 3y = 1 (2)

So, the <u>new system</u> of equivalent equations are 4x + 6y = 8 and 12x + 3y = 1.

2.

The <u>new system</u> of equivalent equations are 3x - 21y = 24 and 5x + 4y = 20

To get an equivalent equation, we multiply the original equation by a constant and replace it with the new equation.

So,

x - 7y = 8  (1)

5x + 4y = 20 (2)

We multiply equation (1) by 3, we have

So, x - 7y = 8 (1) × 3

⇒3x - 21y = 24 (3)

Replacing (1) by (3), we have

3x - 21y = 24 (3)

5x + 4y = 20 (2)

So, the <u>new system</u> of equivalent equations are 3x - 21y = 24 and 5x + 4y = 20.

Learn more about equivalent equations here:

brainly.com/question/2972832

6 0
3 years ago
How many 2cm2 pieces of paper can be cut from a square sheet of side length 1.2m?
stiv31 [10]
Hi there!

To solve this problem, we need to first convert 1.2 m into cm, and then find the area of the square sheet of paper, before dividing it by 2 cm squared pieces of paper to get the answer.

1 m = 100 cm
1.2 m = 120 cm

120 × 120 = 14400

14400 ÷ 2 = 7200

So, your answer is 7200.

Hope this helps!
4 0
3 years ago
A service man deposited his saving of Rs 4500 in a bank. At the end of 3year if he received a amount of Rs 5715 from the bank fi
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Answer: financial stabibilities is the answer

Step-by-step explanation:

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4 years ago
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