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
Umnica [9.8K]
3 years ago
12

FIRST TO ANSWER GETS BRAINLIEST

Mathematics
1 answer:
iVinArrow [24]3 years ago
5 0

Step-by-step explanation:

3x - y = 74

4y = x

Replace x in the first expression by 4y

3x - y = 74 ➡ 3(4y) - y = 74

12y - y = 74

11y = 74

y = 74/11 we can use this to find x

4y = x

4 × 74/11 = x

296/11 = x

You might be interested in
David estimates that he will have expenses totaling $24,870 for one year of college, He will receive$7,560 in grants. Howmuch wi
noname [10]

Since there are 2 semesters per year we have:

(1/2)(24,870 - 7,560) = $8,655

David would have to contribute $8,655 per semester.

5 0
3 years ago
Read 2 more answers
Consider the linear equation x- 3/2y = 2
Allisa [31]

Answer:

don't know

Step-by-step explanation:

not really sure

7 0
3 years ago
The average and standard deviation of a measurement is 15.0 ± 5.0. if 100 students measured the value, how many would you expect
AURORKA [14]

Solution: We are given:

\mu=15, \sigma=5

Using the empirical rule, we have:

\mu \pm \sigma covers 68% of data.

Also the percentage of values below mean = Percentage of values above mean = 50%

Now, let's find the z score for x=20

z=\frac{20-15}{5}=1

Therefore, the percentage of values greater than 1 standard deviation above mean 50\% - \frac{68\%}{2} =50\%-34\%=16%

Expected number of students = 16% of 100 = 16


4 0
3 years ago
Subtract -7x^2+4x+2−7x 2+4x+2 from x^2-3x 2 −3.
expeople1 [14]

Answer:

The answer is 4

Step-by-step explanation:

4 0
3 years ago
If f(x)=-2x-3 what is f(r+2) ?
fiasKO [112]

Answer:

f(x) =  - 2x - 3

when x is r + 2 :

f(r + 2) =  - 2(r + 2) - 3 \\  =  - 2r - 4 - 3 \\  =  - 2r - 7 \\  \\ { \boxed{ \boxed{f(r + 2) =  - 2r - 7}}}

4 0
3 years ago
Other questions:
  • Audrey needs to cut 1 meter of yellow ribbon and 28 centimeters of blue ribbon. In total, how many centimeters of ribbon does sh
    13·2 answers
  • Sentence with this numérico expression 24-6+3
    5·1 answer
  • Will Brown who pays weekly union dues of $3.00 earns $289 per week his federal income tax a$39.13 and his Rica tax is 6.2% he pa
    6·1 answer
  • Write an equation of the line, in point slope form, that passes through the two given points.
    9·1 answer
  • The angle of depression from D to F measures 40°. If DE = 100 m, find DF. Round your answer to the nearest tenth.
    6·2 answers
  • Please help I will mark brainly!!!
    7·1 answer
  • Y = -3x + 1 <br> What is the slope?
    13·2 answers
  • How many beans stacked on top of each other would it take to reach the moon. And we're talking Lima beans here.
    13·1 answer
  • To make dough, Reba needs 2 cups of
    14·2 answers
  • Two birds sit at the top of two different trees 57.4 feet away from one another. the distance between the second bird and a bird
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!