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allochka39001 [22]
3 years ago
11

Mr johnson sells erasers for 3 dollars each he sold 96 erasers last week and he sold 204 erasers this week about how many more m

oney did he make this week
Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
7 0
$324 more this week. (204*3) - (96*3)
You might be interested in
7/10 write the number as hundredths in a fraction form and decimal form
klemol [59]

7/10 as hundredths decimal: .07

7/10 as fraction: 7/100

7 0
3 years ago
Please help me now ! Thank you
jarptica [38.1K]
First we'll do two basic steps. Step 1 is to subtract 18 from both sides. After that, divide both sides by 2 to get x^2 all by itself. Let's do those two steps now

2x^2+18 = 10
2x^2+18-18 = 10-18 <<--- step 1
2x^2 = -8
(2x^2)/2 = -8/2 <<--- step 2
x^2 = -4

At this point, it should be fairly clear there are no solutions. How can we tell? By remembering that x^2 is never negative as long as x is real. 

Using the rule that negative times negative is a positive value, it is impossible to square a real numbered value and get a negative result. 

For example
2^2 = 2*2 = 4
8^2 = 8*8 = 64
(-10)^2 = (-10)*(-10) = 100
(-14)^2 = (-14)*(-14) = 196

No matter what value we pick, the result is positive. The only exception is that 0^2 = 0 is neither positive nor negative.

So x^2 = -4 has no real solutions. Taking the square root of both sides leads to

x^2 = -4
sqrt(x^2) = sqrt(-4)
|x| = sqrt(4)*sqrt(-1)
|x| = 2*i
x = 2i or x = -2i
which are complex non-real values


5 0
3 years ago
Evaluate if x =3 and y = -2: x squared + 2 y A. 5 B. 10 C. 2 D. 3
Luden [163]
Of you have 3 squared you get 9 then 2 times -2 is -4. then you add them 9=-4 which would be ...A: 5
5 0
3 years ago
Read 2 more answers
Some one please help me fast!!
Pie

Answer:

A) 10^23

Step-by-step explanation:

if bases are the same and you're multiplying then:

keep the base and add the exponents

8 0
2 years ago
Peter is 8 years younger than Alex. In 9 years time, the sum of their ages will be 76 . How old is Alex now?
Lera25 [3.4K]

Answer:

Peter is a-8 in 9 years, (a-8)+ 9+ a+ 9= 76

5 0
3 years ago
Read 2 more answers
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