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kifflom [539]
2 years ago
11

Please help this is affecting my grade pls help i beg of you <3

Mathematics
1 answer:
fredd [130]2 years ago
4 0

Answer:

C - On the number line, move 3 units to the left. End at -7. The dolphin was 7 feet below sea level.

Step-by-step explanation:

The dolphin's starting point was -4 (4 feet below sea level). If the dolphin if diving down by 3 feet, you add -3 to its starting point.

-4 + -3 = -7.

You might be interested in
If P(A) = 0.2, P(B) = 0.2, and P(A ∪ B) = 0.4, then P(A ∩ B) = _______.
Pavlova-9 [17]

Answer:

P(A ∩ B) = 0.

a) NO

b) YES

Step-by-step explanation:

Thinking about this through Venn diagrams we can sort of understand that:

if P(A) = 0.2 and P(B) = 0.2, and P(A∪B) = 0.4.

there's no overlapping between P(A) and P(B).

(If there was overlapping then P(A∪B) < 0.4, since you'd be excluding the overlapped part from getting counted twice.

Think of it in terms of calculating areas circles A and B, if the circles were disjoint, then the sum of the areas A and B would be 0.2+0.2. But if the circles were overlapping then the sum of the areas would be 0.2+0.2-P(A ∩ B), where P(A ∩ B) is the overlapping part)

since there's no overlapping P(A ∩ B) = 0.

a) NO

events A and B are only independent when P(A ∩ B) > 0 (or overlapping)

b) YES

events A and B are mutually exclusive when P(A ∩ B) = 0 (or disjoint)

8 0
3 years ago
A grocery store is selling 90 fl. oz of detergent for $6.99. To the nearest cent, what is the unit price?
Ganezh [65]

Answer:

A

Step-by-step explanation:

6.99 - 6 = 0.99

8 - 6.99 = 1.01

1.01>0.99

So it's A

Brainliest???

5 0
3 years ago
Read 2 more answers
#5
Zigmanuir [339]

Answer:

6

Step-by-step explanation:

because 5 is greater than 4

6 0
2 years ago
Find the y-intercept of 2x - 3y = 6
Ksju [112]

Answer:

(0, - 2)

Step-by-step explanation:

The y-intercept is the value of y when x = 0. Substitute 0 for x in the equation and solve for y.

2x - 3y = 6

2(0) - 3y = 6

- 3y = 6

\frac{ - 3y}{ - 3}  =  \frac{6}{ - 3}

y =  - 2

When x = 0, y = - 2.

4 0
3 years ago
To get admitted to top universities, the applicant's SAT (Scholastic Aptitude Test) score must be on a very high side. In terms
Gekata [30.6K]

Answer:

A) The applicant's SAT z-score has to be positive and large.

Step-by-step explanation:

The zscore measures how much above or below the mean a value is in a normally distributed sample. The value can be a grade, for example.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by

Z = \frac{X - \mu}{\sigma}.

When the zscore of X is negative and large, this means that the grade is on the very low side(very below the mean).

When the zscore of X is negative and small, this means that the grade is on the low side(a bit below the mean).

When the zscore of X is close to 0, the grade is close to the mean.

When the zscore of X is positive and small, this means that the grade is on the high side(a bit above the mean).

When the zscore of X is positive and large(Z > 1), this means that the test score is on a very high side.

The problem states that:

To get admitted to top universities, the applicant's SAT (Scholastic Aptitude Test) score must be on a very high side. So, the correct answer is:

A) The applicant's SAT z-score has to be positive and large.

6 0
3 years ago
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