1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Charra [1.4K]
3 years ago
11

What is the value of m? 12+(7+m)=30 11 19 25 35 49

Mathematics
2 answers:
mafiozo [28]3 years ago
6 0
We can do anything to an equation as long as we do it to both sides
remember the associative property of addition

a+(b+c)=(a+b)+c
so
12+(7+m)=(12+7)+m=19+m

19+m=30
minus 19 both sides
19-19+m=30-19
0+m=11
m=11
Marat540 [252]3 years ago
4 0
The answer is 11
hope that helps
You might be interested in
This season, the probability that the Yankees will win a game is 0.5 and the probability that the Yankees will score 5 or more r
NemiM [27]

Answer:

The answer is .64

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
-5х + Зу = -8<br> 3х - 7y = -3<br> Ordered pair
tatiyna

Answer:

1. y= 2x-5        

2. y= x+3

3. y=2x+7

Step-by-step explanation:

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=4%20%5Ctimes%20%20%7B2%7D%5E%7B2%7D%20" id="TexFormula1" title="4 \times {2}^{2} " alt="4 \ti
My name is Ann [436]
2^2= 4
4x4= 16
answer is 16
4 0
3 years ago
Read 2 more answers
The average height of 20-year-old American women is normally distributed with a mean of 64 inches and standard deviation of 4 in
Murrr4er [49]

Answer:

Probability that average height would be shorter than 63 inches = 0.30854 .

Step-by-step explanation:

We are given that the average height of 20-year-old American women is normally distributed with a mean of 64 inches and standard deviation of 4 inches.

Also, a random sample of 4 women from this population is taken and their average height is computed.

Let X bar = Average height

The z score probability distribution for average height is given by;

                Z = \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \mu = population mean = 64 inches

           \sigma = standard deviation = 4 inches

           n = sample of women = 4

So, Probability that average height would be shorter than 63 inches is given by = P(X bar < 63 inches)

P(X bar < 63) = P( \frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } } < \frac{63-64}{\frac{4}{\sqrt{4} } } ) = P(Z < -0.5) = 1 - P(Z <= 0.5)

                                                        = 1 - 0.69146 = 0.30854

Hence, it is 30.85%  likely that average height would be shorter than 63 inches.

7 0
3 years ago
A mixture of compounds X and Y in a 0.100-cm cell had an absorbance of 0.215 at 272 nm and 0.191 at 327 nm. Find [X] and [Y] in
Oksi-84 [34.3K]

Answer: The concentration of X is 7.13582\times 10^{-6} and the concentration of Y is 2.53159\times 10^{-5}.

Step-by-step explanation:

Since we have given that

At 272 nm, absorbance = 0.215

At 327 nm, absorbance = 0.191

As we have given that

                               Compound X             Compound Y

272                               16400                            3870

327                                3990                             6420

So, our equations becomes

16400C_1+3870c_2=0.215\\\\3990C_1+6420C_2=0.191

By solving these two equations, we get that

C_1=7.13582\times 10^{-6}\\\\C_2=2.53159\times 10^{-5}

Hence, the concentration of X is 7.13582\times 10^{-6} and the concentration of Y is 2.53159\times 10^{-5}.

5 0
3 years ago
Other questions:
  • When Roberto got a puppy from the shelter, it weighed 11 pounds. The puppy gained 40% of it's original weight in the first month
    10·2 answers
  • The point, (-4, 1) is located in which quadrant?
    7·1 answer
  • Please help its urgent ​
    13·1 answer
  • What is the ratio of 48 to 60
    15·1 answer
  • 0.000000000009256 scientific method
    15·1 answer
  • Simplify. 5 2+20 <br> 5 <br> 30 <br> 45 <br> 72<br> (The 5 2 is an exponent.)
    10·2 answers
  • The second and third terms of a G.P is 6 times the fourth term. Find the possible values of the common ratio. ​
    14·1 answer
  • Answer all the questions for a bunch of points, no scam answers please
    15·1 answer
  • ¿Cuántos de éstos?
    12·1 answer
  • Evaluate the expression w+9 when w=1​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!