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3 years ago

15

Match each quadratic equation with its solution set. arrowRight arrowRight arrowRight arrowRight

2 answers:

quester [9]3 years ago

8 0

Answer:

1 is 7 2 is -3 3 is -2 4 is 3

Step-by-step explanation:

Need points

vova2212 [387]3 years ago

7 0

Answer:

Step-by-step explanation:

For this case we solve each of the equations:

Adding 32 to both sides of the equation:

Dividing between 2 on both sides of the equation:

Applying square root to eliminate the exponent:

Second equation:

Adding 100 to both sides of the equation:

Dividing between 4 on both sides of the equation:

Applying square root to eliminate the exponent:

Third equation:

Adding 55 to both sides of the equation:

Applying square root to eliminate the exponent:

Fourth equation:

Adding 140 to both sides of the equation:

Applying square root to eliminate the exponent:

Fifth equation:

Adding 18 to both sides of the equation:

2x ^ 2 = 18

Dividing between 2 on both sides of the equation:

Applying square root to eliminate the exponent:

Answer:

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What is the equation of this line?<br> Please Help <br><br> Y=4x<br> Y=-1/4x<br> Y=-4x<br> Y=1/4x

Sveta_85 [38]

Answer: Y=-1/4x

Step-by-step explanation:

A good way to find an equation of a line is to look for the slope. An obvious spot on this line would be when it crosses (0,0), and another one to the right would be when it crosses at (4,-1).

The slope is rise over run, or if we use the two points we found, "rise" would be -1, because it's dropping 1 unit when going from (0,0) to (4,-1), and the "run" would be 4, because it moves to the right 4 from (0,0) to (4,-1).

Putting these two values together we get:

m (slope) = rise / run

m = -1 / 4

Out of all the equations we're given, we can look for the one with a slope of -1/4, which is given to us:

y = (-1/4)x

7 0

3 years ago

Check my answer?

Effectus [21]

D = 2r => 12.6 = 2*r => r=6.3
A = π*r^2 = (3.14) * (6.3)^2 = (3.14)*(39.69) = 124.6266 which is approximately 124.63

Hope this helps!

6 0

3 years ago

Read 2 more answers

What is the inverse of the function f(x)=1/9x+2

Anna35 [415]

Answer:

$f^{-1}(x)=9x-18$

Step-by-step explanation:

we have

$f(x)=\frac{1}{9}x+2$

Let

$y=f(x)$

$y=\frac{1}{9}x+2$

Exchange variables x for y and y for x

$x=\frac{1}{9}y+2$

Isolate the variable y

$x-2=\frac{1}{9}y$

$y=9(x-2)$

$y=9x-18$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=9x-18$ -------> inverse function

7 0

3 years ago

Read 2 more answers

Can someone help me,it would be appreciated.Thanks!!! :D

Ierofanga [76]

The number of pieces of 1/3 foot tall to make a 6 feet skyscraper is 18 pieces.

The model of a skyscraper comes in pieces and each piece is 1/3 feet tall.

After all the pieces are put together the skyscraper is 6 feet tall.

We have to calculate how many pieces were put together to make the 6 feet skyscraper.

Let X be the number of pieces put together to make a 6 feet skyscraper.

Now,

Each piece = 1/3 feet tall.

Since all the pieces together make 6 feet tall, we can write the number of pieces needed to make 6 feet tall as:

X x (1/3) = 6

X = 6 x 3 = 18

Thus, we need 18 pieces of 1/3 foot tall to make a 6 feet skyscraper.

Learn more about multiplication word problems here:

brainly.com/question/4686237

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7 0

1 year ago

The campers at a summer camp were asked to choose a favorite activity. The table shows the activities chosen by 200 campers.

faltersainse [42]

Answer: 30
200(.15) = 30

7 0

2 years ago

Read 2 more answers