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Tanzania [10]
3 years ago
12

I need help is it A B C or D

Mathematics
2 answers:
BARSIC [14]3 years ago
8 0
It's A
Subtract 10 from both sides and you get y=-x-1
lana [24]3 years ago
3 0
I'm thinking b
or c is what i think hope i could help ^-^

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Thalia, a quiz show contestant, answered 20 questions. She was awarded 2 points for every correct answer that she gave, but she
DIA [1.3K]

The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28. Instead modifications should have been made before applying the equation.

<h3>What is an Equation ?</h3>

An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.

Total Questions = 20

Total Points = 28

Correct Answers = +2 points

Incorrect Answers = -1 point

The viewer represents the correct answers with x and the incorrect ones with y.

x+y = 20

for every correct answers 2 points;

and for every incorrect answers, -1 point

This can be written as

2x-y = 28

The viewer's mistake is that; instead of subtracting total incorrect points from the correct points, the viewer added them together;

now

2x-y = 28

x+y = 20

On adding the equations

]3x = 48

x = 16

y = 4

This means that the contestant answered 16 questions correctly and 4 questions incorrectly

The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28.

To know more about Equation

brainly.com/question/10413253

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3 0
2 years ago
If a ball is dropped near the surface of the earth, then the distance it falls is directly proportional to the square of the tim
damaskus [11]
ABOUT 143.2 meters im pretty sure

7 0
3 years ago
Read 2 more answers
What is the value of x ; 32x + 53 = 501
kirill [66]
32x + 53 = 501 
       -53       - 53 

<u>32x</u> = <u>448</u>
32       32

x = 14 
6 0
3 years ago
Read 2 more answers
NEED HELP! Which equation represents a circle with a center at (-5,5) and a radius of 3 units?
Alja [10]

Equation of the circle is (x + 5)² + (y - 5)² = 9

Step-by-step explanation:

  • Step 1: Given center is (h, k) = (-5, 5) and radius is 3. Equation of a circle is given by (x - h)² + (y - k)² = r²

Equation is (x - -5)² + (y - 5)² = 3²

⇒ (x + 5)² + (y - 5)² = 9

7 0
3 years ago
Read 2 more answers
Which is equivalent to sin^-1(.75)
Neko [114]
<h2>Answer: 0.85 radians</h2>

Step-by-step explanation:

We have the following trigonometric expression:

sin^{-1}(0.75)=arcsin(0.75)

The result of this calculation is:

sin^{-1}(0.75)=48.59\° where the angle is in degrees

If 360\°=2\pi rad then:

48.59\°(\frac{2\pi rad}{360\°}=0.848 rad \approx 0.85 rad  

Therefore the answer is 0.85 radians

3 0
3 years ago
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