2 years ago

Help on number 20 please?

Mathematics

1 answer:

adell [148]2 years ago

8 0

Answer:

1/8

Step-by-step explanation:

P(-3, 0) and Y(5,-1)

If PLAY is reflected over x-axis, then P-->P'(-3,0) and Y-->Y'(5,1)

Slope of P'Y' = (1 - 0)/(5+3) = 1/8

You might be interested in

sin alpha = 7/25, alpha lies in quadrant ii, and cos beta = 2/5, beta lies in quadrant i. find cos(alpha-beta).

Ilia_Sergeevich [38]

Answer:

Therefore $\cos(\alpha-\beta)=\frac{48+7\sqrt{25}}{125}$

Step-by-step explanation:

Given values are

$\sin \alpha=\frac{7}{25}$

$\cos \beta=\frac{2}{5}$

$\sin^2x+\cos^2=1$

$\cos \alpha=\sqrt{1-\sin^2\alpha}$

$\cos \alpha=\sqrt{1-(\frac{7}{25})^2}$

$\cos \alpha=\sqrt{1-\frac{49}{625}}$

$\cos \alpha=\sqrt{\frac{576}{625}}$

$\cos \alpha=\frac{24}{25}$

$\sin \beta=\sqrt{1-\cos^2\beta}$

$\sin \beta=\sqrt{1-(\frac{2}{5})^2}$

$\sin \beta=\sqrt{1-\frac{4}{25}}$

$\sin \beta=\frac{\sqrt{21}}{5}$

$\cos(\alpha-\beta)=\cos\alpha\cos\beta+\sin\alpha\sin\beta$

$\cos(\alpha-\beta)=\frac{24}{25}\times\frac{2}{5}+\frac{7}{25}\times\frac{\sqrt{21}}{5}$

$\cos(\alpha-\beta)=\frac{48+7\sqrt{25}}{125}$

7 0

2 years ago

Jim Moore opens a new savings account. He deposits $12,000 at 12% compounded semiannually. At the start of the fourth year, Jim

Anna35 [415]

12,000×(1+0.12÷2)^(2×6)+50,000×(1+0.12÷2)^(2×2)=87,270.21

8 0

3 years ago

PLEASEEEEEEE HELPPPPPP

Zinaida [17]

Answer:

bajajakakakakkakakskakallalalalalallakakakaka

Step-by-step explanation:

hey ypuuuuuuuuuuuuuuuuuuuuu is opción a hajajakskamqmsjkwkqkqkqkwnanannanaan

8 0

2 years ago

A researcher randomly surveyed 122 college professors to determine what types of courses they teach and their sleeping habits. T

pav-90 [236]

Answer:

C 16/33

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.

scoray [572]

Answer: B. x is all real numbers.

Step-by-step explanation: The domain of a graph is how far the x value can go left or right. Because this is a horizontal line, the domain or x could be any value.

5 0

2 years ago

Read 2 more answers

Help on number 20 please?​

Help on number 20 please?