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2 years ago

What are the solutions to (x + 7)2 = 81?

Mathematics

1 answer:

koban [17]2 years ago

4 0

Answer:

the solutions are c because, when we say x +7=81 that will give us 74 which is there on c

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Graph: g(x)=5cos((\pi )/(2)x-(3\pi )/(2))-2

Tatiana [17]

$g(x)=5cos((\pi )/(2)x-(3\pi )/(2))-2$

generate by: Amplitude:5 Period:4

Phase shift:(3 to the right) Vertical shift:-2

x=3,g(x)= 3

x=4,g(x)= -2

x=5,g(x)= -5

x=6,g(x)= -2

x=7,g(x)= 3

the graph is like cos(x)

learn more about trigonometric graphs here:

brainly.com/question/18265536

#SPJ1

3 0

1 year ago

What number is 65% of 30?

muminat

65%=0,65

30×0,65=19,5 <-----------

7 0

3 years ago

Read 2 more answers

The points (-6, r)<br> and<br> (6,3) lie on a line with slope 3/4. Find the missing coordinate r.

NeTakaya

Answer:

r = -6

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept.

Slope 3/4

This means that $m = \frac{3}{4}$ , and thus:

$y = \frac{3}{4}x + b$

(6,3)

This means that when $x = 6, y = 3$ . We use this to find b. So

$y = \frac{3}{4}x + b$

$3 = \frac{3}{4}(6) + b$

$b = 3 - \frac{18}{4} = \frac{12}{4} - \frac{18}{4} = -\frac{6}{4}$

$y = \frac{3}{4}x - \frac{6}{4} = \frac{3x - 6}{4}$

(-6, r)

r is y when $x = -6$ . So

$y = \frac{3(-6) - 6}{4} = -6$

So r = -6.

5 0

3 years ago

Quadrilateral WXYZ has a length of five, six, seven, and eight. A new quadrilateral is created, using a scale factor of 1.2. Whi

mylen [45]

Answer:

8.4

Step-by-step explanation:

6 0

2 years ago

June had an equal lengths of yellow and green ribbons. After using 30cm of yellow ribbon and 3.3m of green ribbon,the remaining

Ratling [72]

Answer:

4.05 meters or 405 cm

Step-by-step explanation:

The equation to use is

(x - 330) x 5 = x - 30

330 is equal to 3.30 meters.

Then solve the equation.

(X - 330) x 5 = x - 30

5x - 1650 = x - 30

-x

4x - 1650 = -30

+1650 + 1650

4x = 1620

/4 /4

X = 405cm

7 0

2 years ago