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3 years ago

Please help i dont know how to do these so please include explanation

Mathematics

1 answer:

anzhelika [568]3 years ago

4 0

Your answer is 6

Explanation so
L=15
W=4
D=2

15x4=60
60x2=120
Then you use 120divide it by 20 (per hour) and your answer is 6hours

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Suppose cos(a)=.325

tatyana61 [14]

The value of tan a is 2.9098

Explanation:

The given value is $\cos (a)=0.325$

Now, we shall find the value of sin (a), using the identity,

$\sin ^2(a)+\cos^2(a)=1$

Substituting the value of cos (a), we get,

$\sin ^2(a)+(0.325)^2=1\\\sin ^2(a)+0.1056=1$

Subtracting both sides by 0.1056, we have,

$\sin ^2(a)=0.8944$

Taking square root on both sides, we get,

$sin a= 0.9457$

Now, we shall substitute the value of sin (a) and cos (a) to determine the value of tan (a) in the identity $tan (a) =\frac{sin(a)}{cos(a)}$

$tan (a) =\frac{0.9457}{0.325}\\tan (a) = 2.9098$

Thus, the value of tan (a) is 2.9098

7 0

3 years ago

If the area of the vegetable garden is 170 square feet, which equation could be used to find the length of the tomato patch?

lara [203]

Answer:

b is the answer because you divide it by 10

3 0

3 years ago

Read 2 more answers

Which would be included in a probability model for rolling a cube with faces numbered 1 through 6. Select all that apply. A. Sam

Step2247 [10]

Answer:

A,B, D and E.

Step-by-step explanation:

When a cube with faces numbered 1 through 6 is rolled:

(A)The sample space is 1,2,3,4,5,6. Option A is correct

(B) P(rolling a 1) =1/6, Option B is correct

(C)P(rolling a 2)=1/6, therefore option C is incorrect.

(D)P(rolling a 6)=1/6, Option D is correct

(E)In an experimental trial, the outcome must be members of the sample space. Therefore, the outcomes in option (E), 2, 2, 2, 5, 3, 2, 6, 5, 6, 1 are valid.

Options A,B, D and E would be included in the probability model.

5 0

4 years ago

Needing Answers! Thanks!

kari74 [83]

Answer:

1: 4 1/2 hrs. | 2: 16 | 3: yes

Step-by-step explanation:

1: 1.5 x 3 = 4.5 = 4 1/2

2: 24 ÷ 3 = 8 24 - 8 = 16

3: 16 x 5.5 = 88

hope this helps :)

5 0

3 years ago

Read 2 more answers

You and your friend each purchase an equal number n of magazines. Your magazines cost $1.50 each and your friend's magazines cos

slava [35]

Given:

You and your friend each purchase an equal number n of magazines.

Your magazines cost = $1.50 each

Your friend's magazines cost = $2 each

Total cost = $10.50

To find:

The equation to find number of magazines you purchased.

Solution:

Your magazines cost = $1.50 each

Your friend's magazines cost = $2 each

Number of magazines purchased by you and your friend = n

Total cost = $1.50n+2n$

It is given that total cost is $10.50.

$1.50n+2n=10.50$

$3.50n=10.50$

Divide both sides by 3.50.

$n=\dfrac{10.50}{3.50}$

$n=3$

Therefore, required equation is $1.50n+2n=10.50$ and the number of magazines purchased by you is 3.

7 0

3 years ago