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3 years ago

Use the X method to find the solutions of 6x2 + 2x – 20 = 0

Mathematics

2 answers:

SVEN [57.7K]3 years ago

5 0

The X method?
2x=8
X=4

Hunter-Best [27]3 years ago

3 0

Answer:

x= 4

Step-by-step explanation:

first move 20 so you add it

6 x 2 + 2x -20 =0

+20 +20

6 x 2 + 2x =20

12 + 2x =20

-12 -12

2x = 8

div

x=4

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How do you solve 3y=6x-5?

jeka94

Answer:

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Step-by-step explanation:

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3 years ago

Two semicircles are attached to the sides of a rectangle as shown.

melomori [17]

Answer:

$157\ in^{2}$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of rectangle plus the area of two semicircles

The area of rectangle is equal to

$A=14*5=70\ in^{2}$

The area of the small semicircle is equal to

$A=\pi r^{2} /2$

$r=5/2=2.5\ in$ -----> radius is half the diameter

substitute

$A=(3.14)(2.5^{2})/2=9.8125 in^{2}$

The area of the larger semicircle is equal to

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substitute

$A=(3.14)(7^{2})/2=76.93\ in^{2}$

The area of the figure is equal to

$70+9.8125+76.93=156.7425=157\ in^{2}$

8 0

3 years ago

Read 2 more answers

Write an equation in slope intercept form that passes through the points (-2,-6) and (4,-15).

Vesnalui [34]

Equation of the line:

y = -1.5x – 9

or
y =
- 3 x
2
– -9
When x=0, y = -9
When y=0, x = -6

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7 0

2 years ago

Analyze prism shown, thank you.

inn [45]

A.
Faces - 8
Lateral Faces - 6

B.
Vertices - 12

C.
Edges - 18

D.
The base of the prism is a hexagon and the figure as a whole is a hexagonal prism.

6 0

3 years ago

I really need help with this please ! I don't understand it, and I have a quiz tomorrow

erik [133]

You can do this by finding a number close to it, and then finding out how to do it.

For example with 63(square root sign), find out what is close to it.

7x7=49 while 8x8=64

Because of this, we now know that it is between 7 and 8 but is also really close to 8.

Our number could be 7.9

Hope this helped!!!

3 0

2 years ago