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spayn [35]
3 years ago
11

Need help please....

Mathematics
2 answers:
hammer [34]3 years ago
6 0
The answer is A.

When setting up a proportion, it doesn't really matter which numbers go where, as long as you are consistent.

A is the correct answer because it is set up as width/length = width/length. So when you solve for the missing length, you are finding what value of x will make 9/x the same ratio as 10/12.

Hope this helps!




Reil [10]3 years ago
4 0
The answer is A, hope i helped. Mark me as brainliest?
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Which method is used in elimination to find the solutions of x + 3y = 9 and x - 3y = 8?
weqwewe [10]

Answer:

x=17/2  y=1/6

Step-by-step explanation:

-1(x+3y=9)

1(x-3y=8)

_________

-x-3y=-9

x-3y=8

________

-6y/6=-1/6   y=1/6

x+3(1/6)=9

x+ 1/2=9

   - 1/2  - 1/2

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3 years ago
Look at the two patterns below: Pattern A: Starts from 4 and follows the rule "add 9" Pattern B: Starts from 4 and follows the r
bagirrra123 [75]

Answer:b

Step-by-step explanation:

The terms in Pattern B are one third the corresponding terms in Pattern A.

6 0
2 years ago
Justify each step in solving the equation 4X equals seven times X -3
torisob [31]
4x = 7(x-3)

1.  Distribute that multiplicand 7:  4x = 7x - 21

2.  Group the x terms together:  Subtract 4x from both sides:  0 = 3x - 21

3.  Solve for x:  Add 21 to both sides:  21 = 3x

4.  Divide both sides by 3 to obtain x = 7 (answer)
5 0
3 years ago
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The radius of a circle is 1 foot. What is the circle's area?
nikdorinn [45]

Answer:

3.14ft²

Step-by-step explanation:

Area of a circle= πr²

= 3.14 x 1²

= 3.14 x 1

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8 0
3 years ago
The quadratic regression graphed on the coordinate grid represents the height of a road surface x meters from the center of the
andrew-mc [135]

The height of the surface increases, then decreases, from the center out to the sides of the road.

<h3>What is quadratic equation?</h3>

The polynomial having a degree of 2 is defined as the quadratic equation it means that the variable will have a maximum power of 2.

Let

y------> the height of the surface

x------> the road

we know that

The quadratic regression graphed represent a vertical parabola open downward

The function increase in the interval --------> (-5,0)        

The function decrease in the interval -------->   (0,5)

therefore

The height of the surface increases, then decreases, from the center out to the sides of the road.

To know more about quadratic equation follow

brainly.com/question/1214333

#SPJ1

5 0
2 years ago
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