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hram777 [196]
3 years ago
12

A teacher had 39 students in her classes. If each student completed 73 problems which expression shows about how many problems s

he'd have to grade?
Mathematics
1 answer:
kumpel [21]3 years ago
6 0
39 x 73 - use a calculator or something if you need the answer for it.
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Knowing that 2i is one answer to the equation x^4 - 2x^3 + 6x^2 - 8x + m = 0, find the 'm' and the other possible answers.
kakasveta [241]
Ok so remember
if a+bi is a root, then a-bi is also a root

since 2i is a root, -2i is also a root
use synthetic division and the fact that when we divide by 2i and -2i, we have to get all real coeficients and end witha zero at the end
I will show the division in the attachment

we find m=8


we then find th resulting equation that is x^2-2x+2=0
quadratic formula
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}
x=1+i or 1-i







m=8 and the other roots are
x=-2i, 1+i, 1-i


4 0
3 years ago
Is √25 a real, rational, irrational, integer, whole, or natural number?? Btw it could be more than one!
UkoKoshka [18]
The square root of 25 is an irrational, real number.
4 0
3 years ago
Read 2 more answers
Find the equation of the line passing<br> through the points (2, 4) and (3,2).
sineoko [7]

Answer:

y=-2x+8

Step-by-step explanation:

first is to find the slope

m=(y2-y1) /(x2-x1)= (2-4)/(3-2)=-2/1= -2

now using the line formula of y=m*x+b, put in one of the points and solve for b.

2= -2*3 + b

2= -6 + b

8 = b

so y= -2*x+8

3 0
3 years ago
Plsss help me rn What is 100+3+200+7
Dafna1 [17]

Answer:

310

Step-by-step explanation:

100+3=103

103+200=303

303+7=10

4 0
2 years ago
What's the solution set of –5 &lt; 2x – 1 &lt; 3?
Dmitry [639]

Answer:

The answer is - 2 < x < 2

Step-by-step explanation:

–5 < 2x – 1 < 3

Add 1 to both sides to eliminate - 1

That's

- 5 + 1 < 2x - 1 + 1 < 3+ 1

- 4 < 2x < 4

Divide both sides by 2

That's

- 4/2 < 2x/2 < 4/2

The final answer is

<h3 /><h3>- 2 < x < 2</h3>

Hope this helps you

8 0
3 years ago
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