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3 years ago

On a coordinate plane, a triangle has points F (3, 4), D (5, negative 3), and E (1, negative 2).

Mathematics

2 answers:

FrozenT [24]3 years ago

6 0

The coordinates of image of vertex D after a reflection across the x-axis is (5, 3).

Elena L [17]3 years ago

3 0

Answer:

Step-by-step explanation:

Just took the test

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kramer

D. 32 square inches.

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3 years ago

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Identify the property used in the first five steps to solve the equations (2x-5)-6x=-22

Bad White [126]

Combine like terms
Add to both sides
Divide both sides
I only see three steps, man

4 0

3 years ago

FRÉD AND ETHEL WACHED TV FOR SEVERAL HOURS ONE AFTERNOON. THEY BEGAN AT 1:30 P.M AND CONTINUED WACHING TV FOR 3 HOURS AND 45 MIN

QveST [7]

$30 + 45 =75$
$3 + 1 = 4$
There are 60 minutes in one hour, so 75 minutes is equal to 1 hour and 15 minutes.

$4 + 1 = 5$
Their mom turned the TV off at 5:15.

7 0

3 years ago

Find the least squares regression line for the data points. (Let x be the independent variable and y be the dependent variable.)

solniwko [45]

Answer:

y = - 0.9167 - 0.75x

Step-by-step explanation:

Given the data:

(−1, 0), (1, −2), (3, −3)

X : - 1, 1, 3

Y : 0, - 2, - 3

The regression model is written in the form:

y = C + mx

Where ;

C = intercept ; m = slope / gradient

Using the regression model calculator on the data values given above :

Slope (m) = - 0.75

Intercept (c) = - 0.9167

Hence,

y = - 0.9167 - 0.75x

6 0

3 years ago

What is the value of cos(150°)?

baherus [9]

ANSWER

$-\frac{\sqrt[]{3}}{2}$

EXPLANATION

Given

$\begin{gathered} \cos \text{ 150} \\ \end{gathered}$

We can find cos 150 by using

$\begin{gathered} \cos (180-\theta)=-\cos \theta \\ \Rightarrow\cos (180-\theta) \\ =-\cos 30 \end{gathered}$

recall that

$\begin{gathered} \cos 30=\frac{\sqrt[]{3}}{2} \\ \end{gathered}$

Hence,

$\begin{gathered} \cos 150=-\cos 30 \\ =-\frac{\sqrt[]{3}}{2} \\ \end{gathered}$

Therefore, the value of cos 150 is

$-\frac{\sqrt[]{3}}{2}$

4 0

1 year ago