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LUCKY_DIMON [66]
3 years ago
8

GUYS! I need help! since I'm too lazy to answer these, please answer them for me. that would be very nice. ok, so here is the pr

oblem. what is "The sum of two numbers is 19 and their difference is 7." what is the answer?
Mathematics
2 answers:
nordsb [41]3 years ago
6 0

Answer: 6 & 13

Step-by-step explanation:

6 + 13 = 19

13 - 6 = 7

professor190 [17]3 years ago
3 0

Answer:

Step-by-step explanation:

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Let X represent the number of children in a Canadian household. The probability distribution of X is: x 1 2 3 4 p(x) 0.30 0.35 0
Anestetic [448]

Answer:0.45

Step-by-step explanation:

7 0
3 years ago
Does anyone know the answer?
ozzi
Maybe d. but u should probably wait for another answer
8 0
3 years ago
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. Y
Troyanec [42]
Staals half
1 gram left
0.3 grams left
half lives are normally written in years
it goes likt this

A=P( \frac{1}{2})^ \frac{t}{h}
A=final amount
P=initila amount
t=time elapsed
h=time half life is (same units as time)

let's use days as the units of time


we are given
initial amount=1gram
final amount=0.3gram
time=4 days

so
0.3=1( \frac{1}{2})^ \frac{4}{h}
solve for h
0.3=( \frac{1}{2})^ \frac{4}{h}
take the ln of both sides
ln(0.3)=ln( \frac{1}{2})^ \frac{4}{h}
ln(0.3)=\frac{4}{h}ln( \frac{1}{2})
times both sides by h
hln(0.3)=4ln( \frac{1}{2})
divide both sides by ln(0.3)
h= \frac{4ln( \frac{1}{2}) }{ln(0.3)}
use calculator
h=2.30287
3 sig figs
h=2.303 days
6 0
3 years ago
-v + 5 + 6v = 1 + 5v + 3
Vedmedyk [2.9K]
Combine your like terms: 5v + 5 = 5v +4
subtract the 5v and 4 from each side:  0 = 1

because 0 \neq 1, there is no solution
8 0
3 years ago
Read 2 more answers
School A has graduated 1,700 students and graduates
Alisiya [41]

Answer:

the answer is 11 years

Step-by-step explanation:

if school A is graduated 50/years,

the graduated in 11 years is 550

added of graduated 1,700 in 550 is 2,250

if school B is graduated 150/years,

the graduated in 11 years is 1650

added of graduated 600 in 1650 is 2,250

so School A and B is to be equal in 11 years

4 0
3 years ago
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