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
Viktor [21]
3 years ago
11

Mel is 3 years older than Rahfat and Aurelio is twice as old as Mel. The sum of their ages is 57. How old is Mel.

Mathematics
2 answers:
ladessa [460]3 years ago
7 0
<span>Mel is 3 years older than Rahfat and Aurelio is twice as old as Mel. The sum of their ages is 57. How old is Mel.
</span>
M=15
julia-pushkina [17]3 years ago
3 0
Mel's Age = xRahfat's Age = x-3Aurelio's Age = 2x 2x + x +x -3 = 574x -3 = 574x = 60x = 15So Mel's age is 15.Hope this helps! :D
You might be interested in
105.6 L/h = ___ L/min?
borishaifa [10]

Answer:

(105.6 L / hour) x (hour / 60 min) = (105.6 / 60) = 1.76L / min .



6 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!! Why would someone choose to use a graphing calculator to solve a system of linear equatio
ohaa [14]

Answer:

A graphing calculator is more accurate than graphing by hand. If the slope and/or y-intercept is a fraction or decimal, it is more difficult to accurately graph by hand.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
HELP WILL GIVE BRANLIEST! WILL RATE! AND SAY THANKS!!!
Drupady [299]

Answer:

9.57 inch

Step-by-step explanation:

(4/3)×pi×8³ = 14×16×h

h = (4/3)×pi×8³ ÷ (14×16)

h = 64pi/21 inch

Or, 9.57 inch (3 sf)

5 0
3 years ago
The midpoint of (3 x, -2) and (-4, 5y) is (1,4). find x, -y​
Mariana [72]

Answer:

(x,-y): (2,-2)

Step-by-step explanation:

M=(x+x)/2,(y+y)/2

Given (1,4)=

\frac{3x - 4}{2}

This implies:

1 =  \frac{3x - 4}{2}

3x - 4 = 2 \\ 3x = 2 + 4 \\  \frac{3x }{3}  =  \frac{6}{3}  \\ x = 2

In a similar way,

4 =  \frac{ - 2 + 5y}{2}  \\  - 2 + 5y = 8 \\ 5y = 10 \\ y = 2

The question demanded (x,-y)

Hence(2,-2) is the answer

7 0
2 years ago
In a manufacturing process a random sample of 9 bolts manufactured has a mean length of 3 inches with a standard deviation of .3
Serggg [28]

Answer:

The correct option is (C) (2.769, 3.231).

Step-by-step explanation:

The confidence interval for mean when the standard deviation is not known is:

CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}

Given:

\bar x = 3\\s=0.3\\n=9\\\alpha =1-0.95=0.05

Compute the critical value as follows:

t_{\alpha/2, (n-1)}=t_{0.05/2, (9-1)}=t_{0.025, 8}=2.31

**Use a <em>t</em>-table.

The 95% confidence interval for true mean length of the bolt is:

CI=\bar x\pm t_{\alpha/2, (n-1)}\frac{s}{\sqrt{n}}\\=3\pm 2.31\times \frac{0.30}{\sqrt{9}}\\ =3\pm 0.231\\=(2.769, 3.231)

Thus, the 95% confidence interval for true mean length of the bolt is (2.769, 3.231).

The correct option is (C).

7 0
3 years ago
Other questions:
  • Factor each completely 3r^2+7r
    9·2 answers
  • What is 12 x 15 (405 x 10)
    8·2 answers
  • Every column of AB is a combination of the columns of A. Then the dimensions of the column spaces give rank(AB) ≤ rank(A). Probl
    13·1 answer
  • Finding the slope of the line.
    11·1 answer
  • Like terms for 3xy<br> 2x<br> -5xy<br> 4<br> 7y<br> xy<br> -3
    15·1 answer
  • ZA and ZB are supplementary angles. If mZA = (5x + 25)° and m
    6·1 answer
  • Concert marketing: The college’s performing arts center wanted to investigate why ticket sales for the upcoming season significa
    14·1 answer
  • What does the product of the two circled numbers (3 and 7) represent? ​​
    6·1 answer
  • Which is the best definition of the properties of equality? A group of rules you can use to solve equations that only involve di
    9·1 answer
  • Can you do it on paper and photos? the answer! <br>help me
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!