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Free_Kalibri [48]
3 years ago
7

Which of the following is equivalent to log7 50 rounded to three decimal places?

Mathematics
1 answer:
DerKrebs [107]3 years ago
5 0
15.467834291012322212445454
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Please help me on 18 and 19
Sidana [21]

Answer: 18: 0, because they have the same number of quarts

19: she will make 20 quarts

Step-by-step explanation:

18: 8 lemon lime- 8 orange =0

19: 8+4+8

12+8

=20 quarts

3 0
3 years ago
True or false, areas under the standard normal curve cannot be negative, whereas z-scores can be positive or negative.
Veseljchak [2.6K]

Answer:

True.

Step-by-step explanation:

We have been given a statement. We are asked to determine the given statement is true or false.

Statement: Areas under the standard normal curve cannot be negative, whereas z-scores can be positive or negative.

We know that area under the standard normal curve is equal to 1, so area under normal curve cannot be negative.

We know that a z-score represents that a data point is how many standard deviation above or below mean.

When a data point is less than mean, then z-score will be negative and when a data point is greater than mean, the z-score will be positive.

Therefore, our given statement is true.

5 0
2 years ago
What is the value of the expression –12 – 3 + 9?
yKpoI14uk [10]
<span>–12 – 3 + 9
(-12 - 3) + 9
-15 + 9
-6</span>
5 0
3 years ago
Find the equation of the sphere passing through P(negative 4 comma 7 comma 6 )and Q(8 comma negative 3 comma 5 )with its center
Juli2301 [7.4K]

Answer: The equation of the sphere is:

(x-2)^2 + (y-2)^2 + (z-5/2)^2 = sqrt(245)/2

Step-by-step explanation:

The centre of the sphere is the midpoint of the diameter, which is

1/2

[(-4,7,6) + (8,-3,5)] =(2,2,5/2)

The length of the diameter is

=sqrt |(8,-3,5) - (-4,7,6)|^2

=sqrt (12^2 + (-10)^2 + (-1)^2)

=sqrt (144+100+1)

=sqrt(245)

so the radius of

the sphere is:

1/2(sqrt(245)) = sqrt(245)/2.

The equation of the sphere is:

(x-2)^2 + (y-2)^2 + (z-5/2)^2 = sqrt(245)/2

4 0
3 years ago
A circular mirror is surrounded by a square metal frame. The radius mirror is 6x the side length of the medal frame is 18x. What
wolverine [178]

Answer:

Step-by-step explanation:

Given:

Radius of circular mirror, r = 6x

Length of metal frame, l = 18x

Area of square, As = l^2

Area of square = 18x × 18x

= 324 x^2.

Area of circular mirror, Ac = pi × r^2

= π × (6x)^2

= 36π x^2.

The expression for the area of the frame is subtracting the mirror from the metal frame = As - Ac

= 324x^2 - 36πx^2

= 36x2 (9 - π).

4 0
3 years ago
Read 2 more answers
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