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3 years ago

What is P = 2a + 2b for a

Mathematics

1 answer:

stiks02 [169]3 years ago

8 0

The answer to b is:

b = p/2 - a

the answer to a is:

a= p - 2b/2

I am also homeschooled :-)

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Solve the given equation over the interval [0, 2π): csc^2 x + 2 csc x = 0.

Anastaziya [24]

$csc^2x+2cscx=0$
Factor out the GCF which is csc x
$cscx(cscx+2)=0$
Set each factor equal to zero.
$cscx=0$ or $cscx+2=0$
Using the reciprocal sine function we can replace csc in the equations.
$\frac{1}{sinx} =0$ or $\frac{1}{sinx} +2=0$
The first equation yields 1 = 0 which is not true. However the second equation does offer 2 possible answers.
When solved for sinx you get $sinx=- \frac{1}{2}$
The sine function is negative in the 3rd and 4th quadrants.
You can use the unit circle or the $sin^-^1$ feature on your calculator $sin^-^1(1/2)$
$210^o or 330^o$ alter radian answer which is probably what you want is $\frac{7 \pi }{6} or \frac{11 \pi }{6}$

8 0

3 years ago

Mon wants to make 5 lbs of the sugar syrup. How much water and how much sugar does he need to make 75% syrup?

Julli [10]

Answer:

He needs 3.75 lbs of sugar and 1.25 lbs of water.

Step-by-step explanation:

Let x lbs be the amount of sugar in the syrup. Then 5-x lbs is the amount of water in this syrup.

Note

5 lbs - 100%

x lbs - 75%

Write a proportion:

$\dfrac{5}{x}=\dfrac{100}{75}$

Cross multiply:

$100x=5\cdot 75\\ \\100x=375\\ \\x=\dfrac{375}{100}=3.75$

So, he needs 3.75 lbs of sugar and 5 - 3.75 = 1.25 lbs of water.

7 0

3 years ago

Whats 1x to the 3rd power and y to the third power divided by 3x squared and y to the 4th power

Alex787 [66]

The answer would be 1 by 3 y to the first power

6 0

3 years ago

I need help with this question!

alekssr [168]

Answer:

a) 2(x+12) and 2 times X+ 2 times 6

b) 12y+8

Step-by-step explanation:

for (A) the equation that i choose are the distributed from of the equation

for (B) I combined like terms and they only equation that made sense is this one

5 0

4 years ago

PLEASE HELP!!!!!!!!

Anastaziya [24]

Answer:

There are 76 students:

g + b = 76

girls is 13 more than twice the boys:

g = 2b + 13

replace g with 2b + 13 in 1st equation

2b+13+b = 76

3b + 13 = 76

3b = 63

b = 21 boys

g = 76-21 = 55 girls

Step-by-step explanation:

8 0

3 years ago