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3 years ago

Energy Basics:Question 1

Mathematics

1 answer:

marin [14]3 years ago

5 0

Answer:

B and C, only

Step-by-step explanation:

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In a circle, if the arc length of Arc AB is 18 cm and the measure of Arc AB is 39°, then find the radius of the circle. (Use 3.1

Elena L [17]

Answer:D

Step-by-step explanation:

4 0

3 years ago

Please help I kind of understand but not fully

Anit [1.1K]

Answer:

Graph #1 - y=-20x+40

Graph #2 - y=5x+10

Step-by-step explanation: The first thing that you do is pull two points from each of the graphs and find the slope. To find the slope you use

<u>FROM GRAPH #1:</u>

(x1,y1) (x2,y2)

80-40/2-3

20/-1

M = -20

<u>FROM GRAPH #2:</u>

(x1,y1) (x2,y2)

20-10/3-1

10/2

M = 5

2. Now once you find the slope you will use the equation of a line formula to form an equation.

The (mx) is your slope, the (b) is the y-intercept. (any value on the y-axis)

3. Since we now know the equation of a line and the slope we will substitute the variables.

<u>Graph #1:</u>

y=mx+b

y=-20x+40

<u>Graph #2:</u>

y=mx+b

y=5x+10

<h3>HOPE THIS HELPS :)</h3>

3 0

3 years ago

What’s the answer (no link I give brainly)

liq [111]

Answer:

the answer is A

Step-by-step explanation:

I had the same question and I got it correct

6 0

3 years ago

What is the value of x to the nearest<br> tenth?

Colt1911 [192]

Answer:

C. 17.6

General Formulas and Concepts:

Rounding

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality<u> </u>

<u>Trigonometry</u>

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] tanθ = opposite over adjacent

Step-by-step explanation:

<u>Step 1: Identify Variables</u>

Angle θ = 40°

Opposite Leg = <em>x</em>

Adjacent Leg = 21

<u>Step 2: Solve for </u><em><u>x</u></em>

Substitute in variables [tangent]: $\displaystyle tan(40^\circ) = \frac{x}{21}$
[Multiplication Property of Equality] Isolate <em>x</em>: $\displaystyle 21tan(40^\circ) = x$
Rewrite: $\displaystyle x = 21tan(40^\circ)$
Evaluate: $\displaystyle x = 17.6211$
Round: $\displaystyle x \approx 17.6$

6 0

3 years ago

Read 2 more answers

A 1 -liter bucket is filled with ice cream to the 1/4 mark. How much ice cream is in the bucket.

fgiga [73]

The answer would be D)

6 0

3 years ago