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4 years ago

PLEASE HELP WILL MARK BRAINLIEST!!

Mathematics

1 answer:

Arturiano [62]4 years ago

7 0

Answer:

Yes.

Step-by-step explanation:

Though x and y can be achieved in a system of equations. The equation

x (t)=0.0411905(t^2)+(-0.164619)t+28.0114

And

y (t)=-0.024127(t^2)+(-0.591143)t+(-87.4403)

Are not system of equations but rather two different models of equations. Nevertheless

To find t in the first equation, x(t) has to be equal to zero.

When the t is substituted in the second equation, t will completely disappear. Given the value of y(t) and vice versa.

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PIT_PIT [208]

The answer is a and b hope I help

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A goodness of fit test will be conducted for the following hypotheses. This type of test is always an upper tail test. The p-val

Sladkaya [172]

Answer:

1. 80

2. 80

3. 40

Step-by-step explanation:

The question requires us to Use the sample size of 200 to find the expected frequency for categories A, B and C

1. (Category proportion)(sample size)

eA = 0.40x200

= 80

2. (Category proportion)(sample size)

eB = 0.40x200

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3. (Category proportion)(sample size)

eC = 0.20 x 200

= 40

The answers are 80, 80 and 40 respectively.

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3 years ago

3. Judy took a taxi. The meter said $45. She tips the driver 15%. How much money does the the driver get in tips?

Anettt [7]

Answer:

6.75$

Step-by-step explanation:

because 15% of 45$ is 6.75$

7 0

3 years ago

a surveyor measures the distance to the two landmarks as shown in the diagram what is the distance d. between the landmarks

Inessa [10]

<h3>The distance between two landmarks is 123 meters</h3>

<em><u>Solution:</u></em>

We have to find the distance between two landmarks

<em><u>Use the law of cosines</u></em>

The third side of a triangle can be found when we know two sides and the angle between them

$c^2 = a^2 + b^2 - 2ab\ cos c$

Here, angle between 90 meters and 130 meters is 65 degrees

From figure,

a = 90

b = 130

c = d

Therefore,

$d^2 = 90^2 + 130^2 - 2(90)(130)\ cos 65\\\\d^2 = 8100 + 16900 - 23400\ cos\ 65\\\\d^2 = 25000 - 23400 \times 0.4226\\\\d^2 = 25000 - 9889.267\\\\d^2 = 15110.73\\\\d = 122.92\\\\d \approx 123$

Thus, the distance between two landmarks is 123 meters

8 0

4 years ago

Gerald bought 3 shirts for 8.40 each, 2 shirts for 12.89 each, and one shirt for 18.90. What was the average cost of the shirts?

Vanyuwa [196]

So first, you add all the numbers together

8.40*3=25.20
12.89*2=25.78
18.90*1=18.90
____________
$69.88

Divide the number of shirts: 6 by the total amount

69.88
_____ = $11.64666= $11.65 is your answer!
6

8 0

4 years ago

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