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juin [17]
3 years ago
7

Find the quadratic equations whose roots are 3 and -4​

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

Step-by-step explanation:

\displyastyle \Large \boldsymbol{} (x-x_1)(x-x_2)  \ \  x_1 \ ; \ x_2 -roots \\\\(x-3)(x-(-4))=(x-3)(x+4)=\boxed{x^2+x-12}

Alisiya [41]3 years ago
4 0

Answer:

Hello,

Step-by-step explanation:

(x-3)*(x+4)=0 or <u>x²+x-12=0</u>

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Genrish500 [490]

Answer:

delta =  {7}^{2}   - 4 \times 2 \times ( - 3) \\  = 49 + 24 = 73 \\ x 1=  \frac{ - 7 +  \sqrt{73} }{4}  \\ x 2=  \frac{ - 7  -  \sqrt{73} }{4}

3 0
3 years ago
(1) The Yearling is one of my favorite novels.(2) It is by Marjorie Kinnan Rawlings. (3) It is about a yearling, which is a youn
weqwewe [10]

Yea u have to do that the most effective is the 10 bc penny is right

7 0
3 years ago
3. Jenny puts two wooden blocks together. One block has a length of 5 in., a width of 4 in., and a
Mazyrski [523]

Answer:

140 inches cubed

Step-by-step explanation:

Use the formula V = length * width * height to find the volumes of each block, then add them together to get the combined volume. So, (5 * 4 * 5) + (4 * 5 * 2) = 140 inches cubed, which is the combined volume.

Hopefully this helps- let me know if you have any questions!

3 0
2 years ago
WILL GIVE BRANLIEST! pls help thank you!
nordsb [41]

Answer:

12x+12 = 7x+56

Step-by-step explanation:

12 / (x+8) = 7 / (x+1)

We can use cross products

12 (x+1) = 7(x+8)

Distribute

12x+12 = 7x+56

3 0
3 years ago
Read 2 more answers
A plot of land in the shape of a horizontal ellipse has a pole at each focus. the foci are 16 feet from the center. if the plot
Leviafan [203]

If a plot of land in the shape of a horizontal ellipse has a pole at each focus. the foci are 16 feet from the center. if the plot of land is 40 feet across one axis, how long is it across the other axis is: c. 24 feet.

<h3>Length across the other axis</h3>

Using Pythagoreans theorem formula

a²=b²+c²

Where:

c=16 feet

a=40/2=20 feet

Hence:

20²=b²+16²

b²=20²-16²

b²=400-256

b²=√144

b=12

2b=12×2

2b=24 feet

Therefore if the plot of land is 40 feet across one axis, how long is it across the other axis is: c. 24 feet.

The complete question is are:

A plot of land in the shape of a horizontal ellipse has a pole at each focus. The foci are 16 feet from the center. If the plot of land is 40 feet across one axis, how long is it across the other axis?

a. 34 feet

b. 46 feet

c. 24 feet

d. 30 feet

Learn more about Length across the other axis here:

brainly.com/question/2005046

brainly.com/question/16492329

#SPJ1

6 0
2 years ago
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