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ankoles [38]
3 years ago
8

Can somebody tell me if this is factorable? I've been trying this with a friend and we can't come up with any numbers. x^2 + 9x

- 4

Mathematics
1 answer:
FrozenT [24]3 years ago
5 0
It cannot be factored, just use the quadratic formula or graph and find the minimum.

Hope I helped :)

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I really really need this answer PLSSSSSSSSS
ikadub [295]

Answer: x=112

Step-by-step explanation: If you add 35 and 33 you would get 68 and if you subtract 68 from 180 you will get 112. I hope this helps!

5 0
3 years ago
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What is 21/35 in its simplest form?
Leno4ka [110]

21/35

use the 7 times table

divide the fraction by 7

21/7= 3

35/7= 5

Answer:

3/5

6 0
3 years ago
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Question
hichkok12 [17]

Answer:

Area: 201.06

Circumference:50.26

Step-by-step explanation:

Area of a circle: pi*r^2

8^2=8*8=64

64*pi=201.06193 Rounded to the neares hundredth=201.06

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4 0
2 years ago
Help to solve -7 - 3a = 1 - 4a
Evgesh-ka [11]

Answer:

-7 - 3a = 1 – 4a  

Step one: Add 4a to -3a  

 

-7 + a = 1  

 

Step two: Add 7 to 1  

 

A = 8  

 

You're done! A=8 for this problem!  

 

 

Hopefully this helps! Feel free to mark brainliest!  

6 0
3 years ago
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If the current in a circuit is 2 +j2 amps and the resistance is 3-j2 ohms, what is the voltage
victus00 [196]

Answer:

The voltage is 10 + 2j volts.

Step-by-step explanation:

Ohm's first law:

By Ohm's first law, the voltage is the multiplication of the current by the resistance, that is:

V = R*i

The voltage is measured in Volts, the current in amps and the resistance in ohms.

In this question:

Both the current and the resistance have complex parts. We have to know that:

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We have that:

R = 3 - 2j, i = 2 + 2j

Then

V = R*i

V = (3 - 2j)*(2 + 2j)

V = 6 + 6j - 4j - 4j^{2}

V = 6 + 2j - 4(-1)

V = 10 + 2j

The voltage is 10 + 2j volts.

4 0
3 years ago
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