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3 years ago

14

0.66×1691 = type a Integer or a decimal estimate the answer by first rounding the first number to the nearest tenth and the seco

nd number to the nearest hundred

1 answer:

Naya [18.7K]3 years ago

8 0

2340 will be the answer

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Riley invested $1,000 in savings bonds. If bonds earn 6.75% interest compounded semi-annually, how much will riley earn in 15 ye

lara31 [8.8K]

Answer:

$2,706.86

Step-by-step explanation:

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2 years ago

Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022

miss Akunina [59]

Answer:

80.66

Step-by-step explanation:

$L\left( x \right) = f\left( a \right) + f'\left( a \right)\left( {x - a} \right)$

$f(x, y, z) = x^2+y^2+z^2$

Since we have three variables,

$L(x, y,z) = f(a, b,c) + f_x (a, b,c) (x - a) + f_y (a, b,c) (y - b) +f_z(a,b,c)(z-c)$

$f(4, 4, 7) = 4^2+4^2+7^2=81$

$f_x (a, b,c)=2x=2*4=8\\f_y (a, b,c)=2y=2*4=8\\ f_z(a,b,c)=2z=2*7=14$

Therefore:

$L(x, y,z) = 81+ 8(x - 4) + 8 (y - 4) +14(z-7)$

Using the above:

f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.

The approximation of $4.02^2 + 3.99^2 + 6.97^2$ is 80.66000.

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3 years ago

February 10: Decimal Operations Graded Review

arsen [322]

Hi there!

Hope this helps!

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2 years ago

Need help with this one

alexgriva [62]

Answer:

3%

Step-by-step explanation:

13 is 25% of 52. If Mickey´s first diamond is aimed to be drawn on the 8th draw, then you need to divide 25% by 8.

This would result in 3.125%

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3 years ago

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Two competing internet companies have recently restructured their payment plans. Quick Net requires a $10 activation fee and cha

DedPeter [7]

55x + 10 = 57x....where x = number of months
10 = 57x - 55x
10 = 2x
10/2 = x
5 = x.....they will cost the same at 5 months...they will each cost $ 285 at 5 months

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3 years ago

Read 2 more answers