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1 year ago

Which of the following graphs has a zero at (-5)?

Mathematics

1 answer:

guapka [62]1 year ago

6 0

Graph B would be the correct answer

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Write a statement that why isn't 6.5 / 0.5 = 3.25

maxonik [38]

Step-by-step explanation:

6.5 / 0.5

= 6.5 / (1/2)

= 6.5 * (2/1)

= 13.

Since 13 is unequal to 3.25,

we conclude 6.5 / 0.5 = 3.25 is false.

7 0

2 years ago

Read 2 more answers

You are knitting a blanket. You want the area of the blanket to be 24 ft². You want the length of the blanket to be 2 feet longe

Finger [1]

With the facts you got here, you can make the following equation:

x*(x+2)=24

x^2+2x=24
x^2+2x-24=0

Then you can use the following formula (which you might have seen before):
x = (-b +/- sqrt(b^2-4ac))/2a

where
ax^2+bx+c=0

(-2 +/- sqrt(4+96))/2
(-2 +/- 10)/2

x_1 = 4
x_2 = -6

3 0

2 years ago

There are 54 students in a class. The Venn diagram below shows how many students play a sport, take a foreign language, do both,

andrew11 [14]

Doesn't play sport

Plays sport |

| |

V V

Takes language | 21 | 17 |

-----------------

Doesn't take language | 12 | 4 |

4 0

2 years ago

1. Solve -35 = -5x ........................

Valentin [98]

Answer:

x = 7.

Step-by-step explanation:

-5x = -35

x = -35 / -5 = 7.

3 0

2 years ago

Read 2 more answers

X2 + 45x = -200 Using the quadratic formual and the discirimnat

dybincka [34]

Answer:

Positive discriminant = 2 real solution

x= -5,-40

Step-by-step explanation:

The discriminant is used to see how many solutions an equation has. If it is negative, the equation has no real solutions, if =0 the equation has 1, and if it is positive, the equation has two real solutions.

The discriminant is the part of the quadratic formula inside the square root:

$b^{2}-4ac$

Every quadratic formula has the structure:

$ax^{2} +bx+c=0$

So first, in order to meet this structure we need to add 200 to both sides so the equation is equal to 0. This gives us:

$x^{2} +45x+200=0$

Our a=1, b=45 and c=200

Now we can substitute these values into the discriminant:

$(45)^{2} -4(1)(200)$

Solve:

$2025-800=1225$

The discriminant is a positive number which means this equation will have 2 real solution. Now we just need to plug in our values into the quadratic formula to solve this equation. Quadratic formula:

$x=\frac{-+/-\sqrt{b^{2}-4ac} }{2a} \\x=\frac{-45+/-\sqrt{1225} }{2}$