3 years ago

Estimate, then find the sum of 312+397

Mathematics

2 answers:

Irina18 [472]3 years ago

6 0

312 397 ___ 709 that the answer if summary number by number you going to find it.

Klio2033 [76]3 years ago

4 0

The estimate is 700 and the answer is 709.I did this all on paper so don't worry I am very good at estimating and adding.

You might be interested in

123 divided by 5? Please help I need the answer now!!!

inysia [295]

Answer:

24.6

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Find the surface area of the pyramid. The side lengths of the base are equal.

Pachacha [2.7K]

Answer:

A = 177.46

Step-by-step explanation:

$A = lw + l\sqrt{(\frac{w}{2})^{2} + h^{2}} + w \sqrt{(\frac{l}{2})^{2} + h^{2}$

A = 6*6+6root((6/2)^2+11.4^2)+6root((6/2)^2+11.4^2)

A = 177.46

4 0

2 years ago

Read 2 more answers

At a surf shop in Malibu, California, a used blue surfboard is on sale for $100. According to the salesperson, the new price rep

Leokris [45]

Answer:

$125

Step-by-step explanation:

if there was a discount of 20%, the sales price is 100 - 20 = 80% of the original price

let a = original price

this equation can be used to represent the question

a x 0.8 = 100 ]]divide both sides by 0.8

a = 100 / 0.8 = 125

4 0

2 years ago

a purse contains $2.95 in quarters and dimes. there are 9 more quarters than dimes. find the number of quarters and dimes.

Firdavs [7]

There are 11 quarters and 2 dimes in the purse

5 0

3 years ago

Read 2 more answers

Write the standerd form for thirty thousand,four hundred five and three thousandths.

sveta [45]

30 Thousand: 30,000
4 Hundred and Five: 405
3 Thousandths: 3/1000
Final Answer; 30,405 $\frac{3}{1000}$

6 0

2 years ago

Read 2 more answers