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
nadya68 [22]
3 years ago
11

I solved this problem : 33 + 45 + 78 how could i check my answer?​

Mathematics
2 answers:
seraphim [82]3 years ago
7 0
You can check the answer by: adding the numbers together, then add only 2 of the numbers together and subtract the sum of the 2 numbers that you added, from the sum of all of the numbers. for the answer, you should get the number that you left out.

i hope this helped! :)
Vlad [161]3 years ago
4 0

Step-by-step explanation:

So the answer for 33+45+78 is 156.

If you want to check that, you can use inverse operations, so subtract.

156-78=78. (Check 78)

78-45=33 (Check 45 and 33)

Well, now it's checked because we used all the factors of the equation!

You might be interested in
The radius of circular pond is 35 m.
Goshia [24]

Answer:

3848,451001

Step-by-step explanation:

A = πr²

A = π[35]²

A = 1225π

A = 3848,451001

I hope this is correct, and as always, I am joyous to assist anyone at any time.

3 0
3 years ago
A room has three lightbulbs. Each one has a 30% probability of burning out within the month. Write the probability as a percenta
lesantik [10]

Answer:

97.3%

Step-by-step explanation:

Let the three bulbs be A, B and C respectively.

Let P(A) denote the probability that the first bulb will burn out

Let P(B) denote the probability that the second bulb will burn out

Let P(C) denote the probability that the third bulb will burn out

Now, we are told that Each one has a 30% probability of burning out within the month.

Thus;

P(A) = P(B) = P(C) = 30% = 0.3

Now, probability that at the end of the month at least one of the bulbs will be lit will be given as;

P(at least one bulb will be lit) = 1 - (P(A) × P(B) × P(C))

P(at least one bulb will be lit) = 1 - (0.3 × 0.3 × 0.3) = 0.973 = 97.3%

3 0
4 years ago
a shipping company makes a display to show how many cubes can fit into a large box. each cube has a side of 2 inches. the large
ehidna [41]

1 The volume of the cube is 2 * 2 * 2 or 2 ^ 3 in ^ 3 while the volume of the large box is 10 * 10 * 10 or 10 ^ 3 in ^ 3.

2 The answer is 125. Just divide the large box to the volume of the cube 1000 / 8 = 125.

3 The box will hold the same number of balls as small boxes. With the balls, there is empty space.

4 The answer is still 125. Just find the volume of the box and of the cube. Divide the box volume by the cube volume.

4 0
3 years ago
Polygon ABCDE and polygon FGHIJ are similar. The area of polygon ABCDE is
Anestetic [448]

Answer:

b 125

Step-by-step explanation:

first you know that you have 2 and 5 as similar numbers you both square them so that they become a ratio of area which is 4/25 after you do 4/25=20/x and you do cross multiply then you find 125. hope that helped understand.

8 0
3 years ago
Read 2 more answers
Using the pie chart below, if 300 students were polled on their favorite ice cream flavor, how many more students preferred stra
Paladinen [302]
Since there are 300 students you have to use proportions to solve the percents. First for strawberry you need to set up a proportion such as x/300=30/100 to show you are trying to find 30%of 300. Then you must cross multiply so 300 times 30 and 100 times x. Then you have 9,000 and 100, so you divide 9,000 by 100 and then you get 90 which is the portion of kids who liked strawberry flavored ice cream. You should do the exact same thing for vanilla ice cream like this: x/300=29/100 but since you’re finding 29% you need to put a 29 over 100. Then you cross multiply and do 300 times 29 and do x times 100. Which makes you get 8,700 and 100, and then you divide 8,700 by 100 and get 87 for vanilla ice cream. Lastly you need to subtract 87 from 90 since it asked how many more students liked strawberry than vanilla: 90-87=

Can you please mark branliest? Thank you!
3 0
3 years ago
Other questions:
  • Derek has 4.8 pounds of potting soil. He puts equal amounts of soil in 6 pots. Derek draws the model to show how much soil is in
    13·2 answers
  • Which is right??????
    5·2 answers
  • Salía works for Pizza Hut. She earns $9 per hour and $5 for every delivery she makes. She wants to earn more than $150 in an 8-h
    7·1 answer
  • The probability of winning a particular game at the Game Place is 14 1/4 . Find the odds against winning the game.
    7·1 answer
  • Triangle ABC has coordinates A(-3,4), B(3, 2), and C(1,-2). Find the perimeter of triangle ABC.
    10·1 answer
  • Please help me out!!!!!!!!!!!
    15·1 answer
  • Which graph represents 4x + 7y < -21
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D-5x-24%3D0" id="TexFormula1" title="x^{2}-5x-24=0" alt="x^{2}-5x-24=0" align="absmi
    11·1 answer
  • Someone please help! what is the measure of x?
    11·2 answers
  • Hello please help me with this I will give Brainlyst
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!