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Nat2105 [25]
3 years ago
11

You answered 14 questions correctly on a 15-question quiz. what percent did you receive on the quiz?

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

93.3

Step-by-step explanation:

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Oliga [24]
B.28 Years Hope it help
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3 years ago
The water level in a tank decreased 8 inches in 4 minuets. The tank drains at a steady rate. What is the change in the water lev
Vanyuwa [196]
2 inches per minute. Just divide the total amount of inchs by the number of minutes and you have your unit rate.
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3 years ago
Read 2 more answers
How many solutions are there to the equation below?<br> 8x + 47 = 8(x + 5)
qaws [65]

Answer:

there are 0 solutions to the equation

Step-by-step explanation:

To know how many solutions are in the problem, we have to solve for x and see what result we have left. According to the result, we will know how many solutions there are

8x + 47 = 8(x + 5)

8x + 47 = 8*x + 8*5

8x + 47 = 8x + 40

8x - 8x = 40 - 47

0 = -7

As we can see we are left with an equality that is not fulfilled, this means that there is no solution to the problem, at least in the field of real numbers

4 0
3 years ago
Evaluate the expression with the given variable replacements.<br> 2x3 (if x = 3)
MArishka [77]

Answer:

if the expression is 2x^3 then answer is 54

Step-by-step explanation:

2x^3

substitute in x=3

2* (3)^3

= 2*3*3*3

= 2*27

= 54

please give thanks, hit that heart button :) good luck

5 0
3 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.

3 0
3 years ago
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