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
Novay_Z [31]
3 years ago
5

Explain how estimation helps you place the decimal point when multiplying 3.9 &5.3

Mathematics
1 answer:
kow [346]3 years ago
6 0
3.9 and 5.3, when rounded off and mult. together, produce the product 20.
Thus, the decimal point must follow the first two digits of your answer, whether estimate or "exact."

3.9*5.3 = 20.67 by calculator.
You might be interested in
An executive invests $26,000, some at 8% and some at 6% annual interest. If he receives an annual return of $1,860, how much is
S_A_V [24]
Let x = amount invested at 8%
 26000 - x = amount invested at 6%

0.08x + 0.06(26000 - x) = 1860

solving the equation you get x = 15000
and subtract that from 26000 you get 11000
8% investment = 15000
6% investment = 11000
5 0
3 years ago
13.At the Finch School bake sale, donuts sell
aliina [53]

Answer:

c)

Step-by-step explanation:

create a system of equations:

d + m = 104

2d + 3m = 243

now use substitution method based on 'd = 104 - m'

2(104 - m) + 3m = 243

208 - 2m + 3m = 243

208 + m = 243

m = 35

So, 35 muffins and 69 donuts were sold.

This is 34 more donuts than muffins.

7 0
3 years ago
Convert without rounding: 5/8 into a decimal = ?
SOVA2 [1]

Answer:

5/8 as a decimal is 0.625.

6 0
3 years ago
It is given that<br> H=(x:x
Ludmilka [50]

Answer:

is rational number.......

5 0
3 years ago
HELP MY MOM IS GOING TO KILL ME
alex41 [277]

Answer:

−a2+17b

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • sarah earns $3,120 every month her monthly expenses total to $2,130 determine how much money will be spent on rent
    7·1 answer
  • Qual o resultado da subtração dos dois polinômios abaixo? (2x2 + 4x) (–2x2 + x – 6)
    8·1 answer
  • 7x + 2y = -1<br> 3x – 4y = 19
    9·2 answers
  • Oil is leaking from a tanker at the rate of R(t) = 2000e^(-0.2t) gallons per hour where t is measured in hours. How much oil lea
    7·1 answer
  • Distance between 0,2 and 8,8
    6·1 answer
  • Is there a faster way for me to remember my mupilying like my 6,7,8,12
    9·2 answers
  • SOMEONE HELPPP.ILL GIVE BRAINLEST​
    8·1 answer
  • Please help me please!!
    13·1 answer
  • You flip a coin and roll a dice.
    5·1 answer
  • For z = 13 + 13i and w = StartRoot 6 EndRoot + i , which geometric transformation describes the product of z and w on the coordi
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!