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
Llana [10]
3 years ago
8

Which method do you prefer to use to find sums- count by tens and ones, use compatible numbers, or use friendly numbers and adju

st? Explain why.
Mathematics
1 answer:
elena-s [515]3 years ago
5 0
Count by tens and ones.
You might be interested in
Mrs.Maxwell is buying pencils for her students. She has 3 classes of 28 students each. For Valentine’s Day, she wants to give ea
kirill115 [55]

Answer:

the answer might be 336 sorry if i am not right

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Emily wants to know the volume of a beach ball. She deduces that the beach ball has diameter of 12 inches, and then uses the fol
Over [174]

Answer:

D. She used the beach's ball's diameter when she should have used the radius

Step-by-step explanation:

To find the volume of the beach ball, using the volume of a sphere is the right formula to use, which is ⁴/3πr³.

The formula she used is correct.

Since the diameter of the ball is assumed to be 12 inches, what is needed to find the volume is the radius.

Radius (r) = ½(diameter) = ½(12) = 6 in.

This is where Emily made a mistake.

She used the diameter of the beach ball instead of its radius (r) which is needed in the equation.

She should have gotten,

V = ⁴/3(3.14)(6)² = 904.32 cubic inches

7 0
2 years ago
Plz help
frozen [14]

Answer:

a. Required system of equations is:

c+p = 10

5c+4p = 46

b. 6 cakes were sold

Step-by-step explanation:

Let p be the number of pies and c be the number of cakes.

Then according to given statement " the store sold 10 baked goods"

c+p = 10\ \ \ Eqn\ 1

And

"A cake costs $5 and a pie costs $4"

5c+4p = 46\ \ \ \ Eqn\ 2

Using equation 1,

c=10-p

Putting this value of c in equation 2:

5(10-p)+4p = 46\\50-5p+4p = 46\\-p = 46-50\\-p = -4\\p = 4

Putting p = 4 in equation 1

c+4 = 10\\c = 10-4\\c =6

Hence,

a. Required system of equations is:

c+p = 10

5c+4p = 46

b. 6 cakes were sold

7 0
3 years ago
Oliva ties 2.5 feet of ribbon on to 1 balloon how many yards of ribbon dose olivia need for 18 balloons
Bezzdna [24]

Olivia needs 15 yards of ribbon.

2.5x18=45 feet

divide 45ft by 3 to see how many yards that would be.

45/3=15

Hope that I helped

4 0
3 years ago
Can you help me out on this question?
astra-53 [7]

Answer:

4. x= 18

Step-by-step explanation:

We solve the problem like this:

Since 3 is proportional to 6 and 9 is proportional to x, we set up a proportion.

3/9 = 6/x  

We then use cross-multiplication to solve for x.

7 0
3 years ago
Other questions:
  • 70 p x 2 1/2 = how many pounds
    5·1 answer
  • Solve x ym = y x3 for m.
    15·1 answer
  • The Science Club went on a two-day field trip. The first day the members paid $30 for transportation plus $20 per ticket to the
    8·1 answer
  • What are the coordinates of the image of point R(3,-4) after a reflection over the line x=5?
    15·2 answers
  • Shaw’s parking lot has spaces for 1,000 cars. 2 5 of the spaces are for compact cars. On Tuesday, there were 150 compact cars in
    11·1 answer
  • Is (2,10) a solution of the equation y=9x
    15·1 answer
  • What value of n makes the following equation true
    15·2 answers
  • Jake and Katerina are enjoying breakfast at a café in Prague. The crepes cost $2.25 each, and strawberries cost $0.25 each. They
    5·2 answers
  • -6x-2y=9 what is the slope
    6·1 answer
  • What experience did ramses have that made him a great military leader?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!