All categories

3 years ago

1/2 - 20 [ 14- 3 4/15] / 6/5 ^2

Mathematics

1 answer:

lidiya [134]3 years ago

6 0

Step-by-step explanation:

hope it's helpful for you

You might be interested in

Can you help me plz.

gavmur [86]

Answer:

Step-by-step explanation:

pls gimme brainliest if im correct

3 0

3 years ago

Read 2 more answers

Find the exact value of cos(theta) for an angle (theta) with tan (theta)= -2/3 and with its terminal side in Quadrant II.

Naya [18.7K]

Answer:

$-\frac{3\sqrt{13}}{13}$ .

Step-by-step explanation:

Since we are in quadrant two, cosine value is negative while sine value is positive.

We are going to use the Pythagorean Identity: $1+\tan^2(\theta)=\sec^2(\theta)$ .

$1+(\frac{-2}{3})^2=\sec^2(\theta)$

$1+\frac{4}{9}=\sec^2(\theta)$

$\frac{9+4}{9}=\sec^2(\theta)$

$\frac{13}{9}=\sec^2(\theta)$

$\pm \sqrt{\frac{13}{9}}=\sec(\theta)$

$\pm \frac{\sqrt{13}}{3}=\sec(\theta)$

Since cosine and secant are reciprocals then they will have the same sign as along as they both exist.

$\sec(\theta)=-\frac{\sqrt{13}}{3}$

$\cos(\theta)=-\frac{3}{\sqrt{13}}$ .

I don't see this answer as I'm going to rationalize the denominator.

$\cos(\theta)=-\frac{3}{\sqrt{13}} \cdot \frac{\sqrt{13}}{\sqrt{13}}$ .

$\cos(\theta)=-\frac{3\sqrt{13}}{13}$ .

8 0

4 years ago

Read 2 more answers

$1,554.31 With an 30% discount

Ierofanga [76]

Answer:

Original: $1,554.31

You Pay: $1088.02

You Save: $466.29

6 0

4 years ago

A mother is currently 7 times older than her son. In 2 years time, she will be 5 times older than her son.

shtirl [24]

Answer:

y=-x+7

Step-by-step explanation:

every year she goes down how many times she is younger than him by 1 so -x is actually -1x, and it starts at 7 years so we put that as our y intercept

4 0

4 years ago

Read 2 more answers

Given the function, d(t) = 50t, the variable t represents which of the following? Select all that apply. input output function i

34kurt

Answer:

Input

Independent variable

Step-by-step explanation:

we know that

Independent variables, are the values that can be changed or controlled in a given model or equation

Dependent variables, are the values that result from the independent variables

we have the function

$d(t)=50t$

In this problem

The function d(t) represent the dependent variable or the output

The variable t represent the independent variable or input

6 0

3 years ago

Read 2 more answers