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lakkis [162]
3 years ago
13

Explain how estimation helps you to place the decimal point when multiplying 3.9 x 5.3 ?

Mathematics
2 answers:
Marina CMI [18]3 years ago
3 0
Well the answer to that is 20.67.
Also, you can simply find this out by placing the decimal as you solve the problem, meaning as when you solve like this
  3.9
x5.3
--------
    .
Drag the decimal down.
Nimfa-mama [501]3 years ago
3 0
If you round 3.9 to 4 and 5.3 to 5 you can easily multiply those numbers together and get 15.
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Original price: $105; markdown:75
Marina86 [1]
105 - 75 = 30 That should do it.
6 0
4 years ago
Albert deposits $2785 in an account that earns 3.9% interest compounded monthly. this function models the amount in the account
Step2247 [10]

The amount for the given data is found as,\rm a = 2825(1+\frac{3.9}{12} )^{12t}.The given expression is true.

<h3>What is the amount?</h3>

The complete repayment of money at the end of the period for which it was borrowed is referred to as the amount.

The given data in the problem is;

P is the annual payment=2827

r is the rate of interest = 3.9%

n is the time period=12

The formula for the amount is found as;

\rm a = p(1+\frac{r}{n} )^{nt}

Substitute the given value;

\rm a = 2825(1+\frac{3.9}{12} )^{12t}

Hence the given expression is true.

To learn more about the amount, refer to the link: brainly.com/question/12184047.

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5 0
2 years ago
Help! i dont know how to do it
Lesechka [4]
I think it is 1.6
sorry if i am wrong
8 0
3 years ago
Divide ₹960 between Manu and Swapna in the ratio 5: 7
il63 [147K]

Ratio gives the fractional division of a whole into a given portion. Manu's will get 400 while Swapna will get 560.

To divide 960 in the ratio 5 : 7

  • Sum the ratio = (5 + 7) = 12
  • Manu's share = 5 × (960/12) = 400

  • Swapna's share = 7 × (960/12) = 560

Therefore, Manu and Swapna's share is 400 and 560 respectively.

Learn more : brainly.com/question/13218948

5 0
3 years ago
Read 2 more answers
Grayson is flying a kite, holding his hands a distance of 2.75 feet above the ground and letting all the kite’s string play out.
sergiy2304 [10]

The position of the kite with the point directly beneath the kite at the same

level with the hand and the hand for a right triangle.

  • The height of the kite above the is approximately <u>66.314 feet</u>.

Reasons:

The height of his hands above the ground, h = 2.75 feet

Angle of elevation of the string (above the horizontal), θ = 26°

Length of the string, <em>l</em> = 145 feet

Required:

The height of the kite above the ground.

Solution:

The height of the kite above the ground is given by trigonometric ratios as follows;

\displaystyle Height \ of \ kite, \, k_h = \mathbf{h + l \times sin(\theta)}

Therefore;

\displaystyle Height \ of \ kite, \, k_h = 2.75 + 145 \times sin(26^{\circ}) \approx \mathbf{66.314}

The height of the kite above the, k_h ≈ <u>66.314 feet</u>

Learn more about trigonometric ratios here:

brainly.com/question/9085166

8 0
3 years ago
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