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koban [17]
3 years ago
10

2cos(3pi/4) – 4 sin(7pi/6)

Mathematics
1 answer:
dangina [55]3 years ago
7 0

Answer:

0.58578643762

Step-by-step explanation:

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What is the equation of the line with an x-intercept of -1 and a y-intercept of 2?
Radda [10]

Answer:

y = 2x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 1, 0) and (x₂, y₂ ) = (0, 2) ← coordinates of intercepts

m = \frac{2-0}{0+1} = 2

Note the line crosses the y- axis at (0, 2) ⇒ c = 2

y = 2x + 2 ← equation of line

7 0
3 years ago
The perimeter of the square kitchen floor measures 48 feet. What is the area of the kitchen floor?
Ivahew [28]

I hope this helps you...

6 0
3 years ago
I don’t know if my answer is correct? Helpp
Alex Ar [27]
Yes you are correct
4 0
3 years ago
Read 2 more answers
Need help with this. Write an equation that is parallel to the line whose equation is y = −8x − 7?
shutvik [7]

Answer:

Problem 4: y = -8x+b

Problem 5: C: 3x-2

Step-by-step explanation:

<u>Problem 4:</u>

The given line is in slope intercept form.

The slope-intercept form is:

y = mx+b

Here the co-efficient of x is the slope of the line. Comparing the given equation with general form

m = -8

Two parallel lines have same slope so the slope of line will be -8.

y=mx+b\\y = -8x+b

b can be any positive or negative integer as we don't know any point on the line parallel to given line.

<u>Problem 5:</u>

Slope = 3

y-intercept = -2

Slope intercept of line is given by:

y = mx+b

here m is slope and b is y-intercept

Putting the values

y = 3x-2

Option C: y=3x-2 is the correct answer

Hence,

Problem 4: y = -8x+b

Problem 5: C: 3x-2

6 0
2 years ago
Find the measure of each angel
mr_godi [17]
<h3>1.</h3>

We will write and solve an equation that expresses the given relation. Let x represent the angle measure. Its complement is (90-x).

... x =(1/4)(90 -x)

Subtract x and simplify

... 0 = (90/4) - (5/4)x

Divide by the coefficient of x, which is -5/4.

... 0 = -18 +x

Add the opposite of the constant.

... 18 = x

The angle is 18°.

<h3>2.</h3>

The attachment shows the intersction of road AB with road CD.

<em>Supplementary angles:</em> ∠CXA and ∠CXB; ∠BXC and ∠BXD; ∠DXA and ∠DXB; ∠AXC and ∠AXD.

<em>Complementary angles:</em> none

<em>Vertical angles:</em> ∠AXC and ∠BXD; ∠BXC and ∠AXD.

4 0
3 years ago
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