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
diamong [38]
3 years ago
13

Evaluate 7r-15/8 when r=3 and 8=5​

Mathematics
2 answers:
Natali [406]3 years ago
8 0

Answer:

18

Step-by-step explanation:

multiply 7 and 3

reduce 15/5 to 3

subtract 21-3

18

statuscvo [17]3 years ago
6 0

Answer:

18

Explanation:

7(3)-15/5

21-15/5

21-3=18

You might be interested in
You have just bought a new television and it has an aspect ratio of 16:9. The screen on the television is 65 inches. What is the
dem82 [27]

Answer:

Width of T.V. is 21.94 inches Height is 39 inches and area is 855.66 square inch.

Step-by-step explanation:

When we buy an electronic item like T.V or Blue Ray aspect ratio is the term which is used by the salesmen or technicians. Aspect ratio is actually the ratio of length and breadth of the screen of a device or ration of width and height.

In this question aspect ratio of television is given as 16:9

This can be written as \frac{W}{H}=\frac{16}{9} or W=\frac{16}{9} H

Screen of the T.V. is 65 inch which is the diagonal length of the screen.

We know from pythagoras theorem in a right angle triangle

(diagonal)^{2}=(base)^2+(height)^2

(65)^2=(Base)^2+(height)^2

(65)^2= W^2+H^2 = (\frac{16}{9}H)^2+H^2

(65)= \sqrt{\frac{16}{9}H^2+H^2}\\ 65=H\sqrt{\frac{16}{9}+1}\\ 65=H\sqrt{\frac{25}{9}}\\ 65=\frac{5}{3}H\\ H=39 inches

Now height of the T.V.will be

\frac{W}{H}=\frac{16}{9} \\\\\frac{H}{W}=\frac{9}{16}\\ H=\frac{9}{16}W = (\frac{9}{16})39= 21.94 Inches

now area of the T.V.=W×H=39×21.94=855.66 square inch


8 0
4 years ago
Read 2 more answers
Which is larger 0.035 or 0.17
BabaBlast [244]
0.17 is larger as .035 is in the hundredth spot and is lower in value than the tenth spot, in which 0.17 is at. <span />
7 0
3 years ago
Read 2 more answers
What is the precent of increase from 5 to 6?
Law Incorporation [45]

Answer:

20

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Can someone help me on this question? Harry and Tim both made New Years resolutions. Harry made 5 more resolutions than Tim. Tog
solniwko [45]

Answer:7 I think

Step-by-step explanation:

6 0
3 years ago
Find 1722 divided by 6 then estimate to check if your answer is reasonable
Whitepunk [10]
When you divide 1722 by 6 you get 287 so it's not a repeating number so if you estimate 287 to 290 then you get 1740 so your answer is 287.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Given the parent function, y=2^x, write an equation for a function that has a vertical shift down 5 units.
    15·2 answers
  • Convert 5460 feet per minute to miles per hour. Round to the nearest whole number
    10·1 answer
  • A number n divided by 4
    8·2 answers
  • Find x3 − 2y2 − 3x3 + z4 if x = 3, y = 5, and z = −3
    8·2 answers
  • Please help me with just this one question.<br> 7th grade math
    13·1 answer
  • PLEASE ANSWER! Stewart is playing a video game. He earns the same number of points for each prize he captures. He earned 1,200 p
    6·2 answers
  • Given the functions f(x) = 7x + 13 and g(x) = x + 2, which of the following functions represents f[g(x)] correctly?
    6·2 answers
  • Guys I need help on this question
    9·1 answer
  • 10 points
    15·1 answer
  • GIVING BRAINIEST IF CORRECT!!<br><br> Find rad 45 + rad 18
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!