Can someone plz tell me the answers to these 3 questions!!! I’m so lost :(

Mathematics

1 answer:

Inga [223]2 years ago

5 0

1. (3,5)
2. (1,-3)
3. (3,10)

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Solve the equation x^2-4x+85=0

lara [203]

Can't factor
use quadratic
for
ax^2+bx+c=0
x= $\frac{-b+/- \sqrt{b^2-4ac} }{2a}$

given
1x^2-4x+85=0
a=1
b=-4
c=85

x= $\frac{-(-4)+/- \sqrt{(-4)^2-4(1)(85)} }{2(1)}$
x= $\frac{4+/- \sqrt{16-340} }{2}$
x= $\frac{4+/- \sqrt{-324} }{2}$
x= $\frac{4+/- (\sqrt{-1})(\sqrt{324}) }{2}$
remember that √-1=i
x= $\frac{4+/- i(\sqrt{324}) }{2}$
x= $\frac{4+/- i(18) }{2}$
x=2+/-9i

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3 0

3 years ago

Marsha's house is located on the coordinate plane below. Tasha's house is located 6 units from Marsha's house. Which of the foll

Gekata [30.6K]

B 4,2 because it is 6 units away from the point

3 0

2 years ago

Plz help!!!!!!!!!!!!!!!!!1

Wittaler [7]

Answer:

Area = 45 km

Step-by-step explanation:

The area of a parallelogram = base * height

It is given that:

Base = 6 km

Height = 9 km

When these values are substituted into the are equation, the result is:

Area = 6 * 9

Area = 45 km

Hope this helps :)

3 0

3 years ago

Can someone please help me answer my question

algol [13]

The surface area would be 150cm and the volume would be 125cm. To get volume you do 5 cubed to get the answer 125. To get surface area you would do 5 multiplied by 5 multiplied by the cubes 6 sides to get 150.

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3 years ago

Read 2 more answers

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