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
ollegr [7]
3 years ago
5

Evaluate 3/7r + 5/8s when r= 14 and s= 8

Mathematics
1 answer:
jasenka [17]3 years ago
6 0

Answer:

11

Step-by-step explanation:

Step 1:

3/7r+5/8s

Step 2:

So u multiply 3/7 by 14

3/7 x 14= 42/7= 6

Step 2.5:

Now u multiply 5/8 by 8

5/8 x 8= 40/8= 5

Step 3:

<u><em>6+5=11</em></u>

You might be interested in
How do i do this and tell me how u got the answer
EastWind [94]
Substitute.
2x+(2x -15) = -3

4x -15 = -3
Add 15 to both sides

4x = 12

Divide by 4

X=3

2(3) + y = -3

6+y=-3
-6 from both sides
Y=-9

(3,-9)
3 0
3 years ago
Graph the function y = |8 - 2x| + 3. Which is a point on the function? (6.2, 7.4) (7.8, 11.2) (8.6, 6.8) (9.6, 7.3)
Fiesta28 [93]
For this case we have the following function:
 y = | 8 - 2x | + 3&#10;
 The first thing you should do is graph the function to see the behavior.
 When observing the graph (in the attached image) we observe that the following point belongs to the graph:
 (6.2, 7.4)&#10;
 To prove it, let's evaluate the point in the function:
 7.4 = l 8 - 2 (6.2) l + 3&#10;&#10;7.4 = l 8 - 12.4 l + 3&#10;&#10;7.4 = l -4.4 l + 3&#10;&#10;7.4 = 7.4
 The equation is fulfilled and therefore the point belongs to the graph.
 Answer:
 
(6.2, 7.4)
 
See attached image

8 0
3 years ago
Substitution method <br><br> x-7y=-9<br> -x+8y=10
max2010maxim [7]

Answer:

x = -2, y=1

Step-by-step explanation:

x-7y=-9---------------------equation 1

-x+8y=10-------------------equation 2

From equation 1, make x the subject of formula

x=7y-9----------------------equation 3

substituting x=7y-9 in equation 2,

-(7y-9)+8y=10

Expanding bracket

-7y+9+8y=10

Collecting like terms

8y-7y=10-9

y=1

substituting y=1 in 3

x=7(1)-9

x=7-9

x=-2

7 0
2 years ago
Share £405 in the ratio 4:11
Advocard [28]
I think the answer to your question is 15 hope this helps
6 0
3 years ago
Explain how to use the graph-and-check method to solve a linear system of two equations in two variables.
telo118 [61]
You have to explain more
4 0
3 years ago
Read 2 more answers
Other questions:
  • Tom and Diane start to race.Tom took 4 seconds to run 6 yards.Diane ran 5 yards in 3 seconds. If they continued to run at the sa
    7·1 answer
  • Kathy has an orange tree in her front yard. The oranges are beginning to ripen. The first day, Kathy picks 2 oranges. The second
    13·2 answers
  • What is 98.38 divided by 59.6
    15·1 answer
  • What is 7 1/2 - 4 1/4
    11·2 answers
  • Ratio 4 bananas to 12 oranges. write the ratio as a fraction in simplest form. explain the meaning.
    7·1 answer
  • An angle measures 70 degrees. Identify the type of angle
    14·1 answer
  • The linear​ model, y equals . 1967 x plus 15.66 comma provides the approximate​ enrollment, in​ millions, between the years 2003
    8·1 answer
  • Can someone help me with this, thanksssss
    5·2 answers
  • PLEASE HELP!!!!!
    8·1 answer
  • Can you help me i Don’t understand
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!