Solve and then use estimation to make sure your answer is reasonable.

Please help! (listing BRAINLIST and giving points) :)

NikAS [45]

Answer:

Tan B = 12/5

Sin B = 12/13

Cos B = 5/13

Step-by-step explanation:

sine B = opposite (12)/hypotenuse (13)

= 12/13

Cosine B = adjacent/hypotenuse

= 5/13

Tangent B = opposite/adjacent

= 12/5

Here is a picture that can always help you with the three trig ratios.

3 0

3 years ago

The equation that models this trip is T= 36x + 60 where T represents the total cost for the group to take the trip and X equals

Archy [21]

We are given

The equation that models this trip is T= 36x + 60

T represents the total cost for the group to take the trip and

X equals the number of people going

we know that

Domain is all possible values of x for which any function is defined

Since, number of people can neither be negative nor in decimals

so, x can not be negative or in decimals

now, we will check each options

option-A:

x=40

This is positive and whole number

so, this can be domain

so, this is TRUE

option-B:

x=60

This is positive and whole number

so, this can be domain

so, this is TRUE

option-C:

0< x< 40

It also includes decimals numbers

and we know that

x can not be in decimals

so, this is FALSE

option-D:

0< x< 39

It also includes decimals numbers

and we know that

x can not be in decimals

so, this is FALSE

4 0

3 years ago

Read 2 more answers

Write the expression 44(4–7)(4) using a single exponent.

Ghella [55]

<h3>The given expression as single exponent is:</h3>

$4^4 \times 4^{-7} \times 4 = 4^{-2}$

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

<em><u>Given expression is:</u></em>

$4^4 \times 4^{-7} \times 4$

In exponents,

When the base is same, exponents can be added

Which means,

$a^m \times a^n = a^{m+n}$

Therefore,

$4^4 \times 4^{-7} \times 4 = 4^{4-7+1}\\\\Simplify\\\\4^4 \times 4^{-7} \times 4 = 4^{-3+1} \\\\4^4 \times 4^{-7} \times 4 = 4^{-2}$

Thus the given expression as single exponent is:

$4^4 \times 4^{-7} \times 4 = 4^{-2}$

8 0

3 years ago

Read 2 more answers

The table below represents the closing cost of ABC for the last 5 days. What is the r -value of the linear regression that fits

Gnoma [55]

Answer:

The correct option is D.

Step-by-step explanation:

The linear regression equation is in the form of

$y=bx+a$

Where,

$b=\frac{n(\sum xy)-(\sum x)(\sum y)}{n(\sum x^2)-(\sum x)^2}$

$a=\frac{(\sum y)(\sum x^2)-(\sum x)(\sum xy)}{n(\sum x^2)-(\sum x)^2}$

The formula of r is

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n(\sum x^2)-(\sum x)^2][n(\sum y^2)-(\sum y)^2]}}$

The values are

$\sum x=15,\sum y=98.91,\sum x^2=55,\sum y^2=1957.8295,\sum xy=293.78, n=5$

Using above formula, we get

$r=-0.85650$

Therefore option D is correct.

3 0

3 years ago

Read 2 more answers

Jared has two dogs spot and rover. Spot weights 75.25 pounds.rover weights 48.8 pounds more than spot how much does river weight

vichka [17]

Answer:

River weight is 124.05 pounds

Step-by-step explanation:

We are given

Spot weights 75.25 pounds

so,

Spot =75.25 pounds

rover weights 48.8 pounds more than spot

so, we get

Rover = Spot +48.8

now, we can plug value

and we get

Rover = 75.25 +48.8

Rover = 124.05 pounds

So,

River weight is 124.05 pounds

4 0

3 years ago