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
charle [14.2K]
4 years ago
13

If 1 plus 4 = 5, 2+5 = 12, 3 plus 6=21 what does 5+8= ? I think 47

Mathematics
2 answers:
wolverine [178]4 years ago
6 0

Answer:

45 is correct

Step-by-step explanation:

klio [65]4 years ago
3 0
1 + 4 = 5, in this question, there is 1 "4", and 1 + 4 = 5

2 + 5 = 12, in this question, there are 2 "5", and 2 + 5 + 5  = 12

3 + 6 = 21, in this question, there are 3 "6", and 3 + 6 + 6 + 6 = 21

So for 5 + 8, there are 5 "8", so:

5 + 8 + 8 + 8 + 8 + 8 = 45

45 is your answer

hope this helps
You might be interested in
Roberto needs 6 cookies and 2 brownies for every 4 plates he makes for a bake sale. Drag cookies and brownies into the box to sh
ch4aika [34]
6 cookies for every 4 plates....6/4 = 1.5 cookies per plate
2 brownies for 4 plates.....2/4 = 0.5 brownies per plate

for 10 plates...
1.5(10) = 15 cookies <==
0.5(10) = 5 brownies <==
5 0
3 years ago
BRAINLIEST AND FIVE STARS TO THE RIGHT ANSWER
GrogVix [38]
★ Sigma Operator ★

Option C is the correct answer of the above summation series

Description -

Upper limit of sigma - ∞ [ where to stop ]

Lower Limit - 10 [ Where to start ]

Argument = n²

Hence we'll obtain - 100 + 121 + ... ∞

8 0
4 years ago
What does 1/5 x (3 x -2) equal
Harman [31]

Answer:

first multiply the numbers in side the parentheses, make the number an improper fraction(check for cross multiplication) then multiply.

Step-by-step explanation:


8 0
3 years ago
What is the solution to the system? <br><br> (___,___)
Rina8888 [55]
For the first line we have a slope of (y2-y1)/(x2-x1)

(2--2)/(1--1)=4/2=2 so we have:

y=2x+b, now solve for b with either of the points, I'll use: (1,2)

2=2(1)+b

b=0 so the first line is:

y=2x

Now the second line:

(1-10)/(4--2)=-9/6=-3/2 so far then we have:

y=-3x/2+b, using point (4,1) we solve for b...

1=-3(4)/2+b

1=-6+b

b=7 so 

y=-3x/2+7 or more neatly...

y=(-3x+14)/2

...

The solution occurs when both the x and y coordinates for each are equal, so we can say y=y, and use our two line equations...

2x=(-3x+14)/2

4x=-3x+14

7x=14

x=2, and using y=2x we see that:

y=2(2)=4, so the solution occurs at the point:

(2,4)


6 0
3 years ago
There are approximately 1.35 billion people in China. If the world population is 7.1 billion people, what percent of the world p
wlad13 [49]

Answer:

19.01%

Step-by- step explanation:

Percentage = \frac{1.35 billion }{ 7.1 billion } \times 100

                = \frac{ 1.35 \ times 1, 000, 000, 000} {7.1 \times 1,000,000,000} \times 100\\\\\\=\frac{1.35}{7.1} \times 100 = 19.01 \%

6 0
3 years ago
Other questions:
  • HELP ME PLS I LOVEU GUYS &lt;33
    8·1 answer
  • Which number comes next in this series? 99 33 11 3 2/3
    11·1 answer
  • 8(4k - 4) = -5k - 32
    15·2 answers
  • Solve the equation n+5 divided by -16 = -1
    14·1 answer
  • A certain spinner has equally sized slices. The probability of landing on a red slice is 5/8. What are the odds in favor of land
    8·1 answer
  • Solve for h. g=1/4hz
    12·1 answer
  • What is <br> x = 0.6x + 384
    9·2 answers
  • Find the percent of change from the original price of $184 to the sale price of $138.
    8·1 answer
  • Equivalent expression standard form of (2x+5)(x+1)
    5·1 answer
  • Which proportion satisfies the geometric mean (altitude) theorem for the triangle? startfraction 2 over h endfraction = startfra
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!