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____ [38]
4 years ago
9

Will mark brainliest. Find cos(a-(π/4)), if cos(a)= -(1/3)

Mathematics
1 answer:
grigory [225]4 years ago
6 0

Answer:

Step-by-step explanation:

cos(\frac{-1}{3}-\frac{\pi }{4})

cos(\frac{-4}{12}-\frac{3\pi }{12})

cos(\frac{-13.42}{12})  = 0.44 <- rounded to the nearest hundredth

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Solving Rational equations. LCD method. Show work. Image attached.
Dmitry [639]

Answer:

b=1

Step-by-step explanation:

The given rational equation is

\frac{2b-5}{b-2} -2=\frac{3}{b+2}

The Least Common Denominator is (b+2)(b-2).

Multiply each term in the equation by the LCD.

(b+2)(b-2)\times \frac{2b-5}{b-2} -(b+2)(b-2)\times2=(b+2)(b-2)\times\frac{3}{b+2}

Simplify;

(b+2)\times \frac{2b-5}{1} -2(b+2)(b-2)=(b-2)\times\frac{3}{1}

(b+2)(2b-5) -2(b+2)(b-2)=3(b-2)

Expand and group similar terms

2b^2-5b+4b-10 -2(b^2-4)=3b-6

2b^2-5b+4b-10 -2b^2+8=3b-6

-b-2=3b-6

3b+b=-2+6

4b=4

b=1

3 0
3 years ago
What is the end behavior of the polynomial function
PSYCHO15rus [73]
Even-degree polynomials behave like quadratics, while odd-degree polynomials behave like cubic graphs. If an even-degree polynomial has a positive leading coefficient, the two ends of the graph point upward. If an even-degree polynomial has a negative leading coefficient, the two ends of the graph point downward. If an odd-degree polynomial is positive, the left end points down and the right end points up. If an odd-degree polynomial has a positive leading coefficient, the left end points up and the right end points down.
3 0
3 years ago
295% of what number is 177?
Fofino [41]

Answer: 522.15 I think

Step-by-step explanation:

1. We assume, that the number 177 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 177 is 100%, so we can write it down as 177=100%.

4. We know, that x is 295% of the output value, so we can write it down as x=295%.

5. Now we have two simple equations:

1) 177=100%

2) x=295%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

177/x=100%/295%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 295% of 177

177/x=100/295

(177/x)*x=(100/295)*x       - we multiply both sides of the equation by x

177=0.33898305084746*x       - we divide both sides of the equation by (0.33898305084746) to get x

177/0.33898305084746=x

522.15=x

x=522.15

now we have:

295% of 177=522.15

3 0
3 years ago
Find the circumference of the circle to the nearest tenth. Use 3.14 for pi.
Grace [21]
The correct answer is C, or 157 m.
6 0
4 years ago
___________ is a standard of measure for a physical quantity and is included as part of the x and y axes labels on a line graph.
zlopas [31]

Answer:

Unit of measure

Step-by-step explanation:

Unit of measure

When we construct any type of graph the unit of measure needs to be present, becuase the numbers without units are just numbers and with just the numbers we can't have physical interpretation of the situation.

For this reason is importatn to include the units of meausre with the plots since with that we have a point of reference for the variables used.

And satisfy the condition "A standard of measure for a physical quantity and is included as part of the x and y axes labels on a line graph."

8 0
4 years ago
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