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Liula [17]
3 years ago
13

PLEASE !!! HELP D: lord pls

Mathematics
2 answers:
Sonja [21]3 years ago
8 0
It might be 4 I think
pickupchik [31]3 years ago
6 0

Answer:

the answer is 4 have a nice day

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Calculate the difference between the 1990-1997 average blue crab population and the 1998-2009 average blue crab population predi
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The difference of the blue crab population From 1990-1997, the average was (800+750)/2 = 775; and from 1989-2009: (350+350)/2 = 350. I predict that from 2010 to 2020 the population will increase to about 500 because it seems to go on trends of increasing and decreasing.
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3 years ago
A box contains 19 large marbles and 10 small marbles. Each marble is either green or white. 8 of the large marbles are green, an
notsponge [240]

Answer:

25/29

Step-by-step explanation:

see the attached picture.

7 0
3 years ago
Alice created a kite out of two sticks and some fabric. The sticks were 10 inches and 15 inches long.
DENIUS [597]

Answer:

Area = 25 square inches.

Step-by-step explanation:

Consider the large base triangle first. The height is 15 - 5 = 10

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Area = 1/2 * 10 * 10 = 50

Now the smaller triangle is the same base (the smaller stick of 10) * the height of 5

Area = 1/2  b * h

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6 0
2 years ago
Read 2 more answers
What is the area of △ABC?
kirza4 [7]
Answer:
Area = 492.4 m²

Explanation:
The area of the triangle can be calculated using the side-angle-side method as follows:
Area = 0.5 * first side * second side * sin(angle included between these two sides)

This rule is illustrated in the attached image.

Now, we have:
AB = 40 m
BC = 25 m
angle B which is the angle included between AB and BC = 80 degrees

The given angle is included between the two given sides, therefore, we can apply the above rule to get the area.
Area of triangle = 0.5*40*25*sin(80)
Area of triangle = 492.4 m²

Hope this helps :)

3 0
3 years ago
To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the
natta225 [31]

Answer: We should reject the null if the test statistic is greater than <u>1.895</u>.

Step-by-step explanation:

We assume the population to be normally distributed.

Given:  Sample size : n=8, which is asmall sample (n<30), so we use t-test.

We always reject the null hypothesis if the absolute t-value is greater than critical value.

Therefore, We should reject the null if the test statistic is greater than <u>1.895</u>.

3 0
3 years ago
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