Ask question

Ask question

All categories

3 years ago

14

PLZ HELP!!! I HAVE AN EXAM!! Find cscΘ if sinΘ=

"\frac{-2}{7}" alt="\frac{-2}{7}" align="absmiddle" class="latex-formula"> and theta is between 180 to 270 THANK U!!
(with explanation pls)

1 answer:

Allisa [31]3 years ago

8 0

$\boxed{\bold{\red{csc\theta=-\frac{7}{2}}}}$

$\large{\red{Solution\: given:}}$

$Sin\theta=\frac{-2}{7}$

we have

$cosec \theta=\frac{1}{Sin\theta} =\frac{1}{\frac{-2}{7}}\\=-\frac{7}{2}$

You might be interested in

Savannah bought barn wood for $60 for 5 pieces. She spent $40 on materials to paint

Kisachek [45]

Her profit per each wood is $5 so her total profit is $25

because
60 divided by 5 is 12, so each wood is 12 dollars
she spent 40 dollars on materials so 40 divided by 5 is 8, so she spent $20 on each piece of wood to paint it because 12(price of wood)+8(cost of materials per wood)= 20
and shes sells them for 25
so 25-20=5
5x5=25
so the answer is $25 profited

3 0

3 years ago

Fran swims at a speed of 2.9 km/h in still water. The Lazy River flows at a speed of 0.1 km/h. How long will it take Fran to swi

slega [8]

Answer:

Fran's upstream speed (against the current):

2.9 km/hr - 0.1 km/hr = 2.8 km/hr

Fran's downstream speed (with the current):

2.9 km/hr + 0.1 km/hr = 3.0 km/hr

Using the distance formula for calculating time:

rate x time = distance

time = distance / rate

Fran's upstream time = 9 / 2.8 = 3.21 hrs

Fran's downstream time = 9 / 3.0 = 3.0 hrs

6 0

3 years ago

Please help this is my question worth 25 points THANKS PLEASE

notsponge [240]

Answer:

sorry but need more info y could be any number

3 0

3 years ago

Read 2 more answers

My license plate is a 4-digit number. The products of the digits is 0; their sum is 9; the numbers appear in descending order; a

Lilit [14]

The product of the 4 numbers is 0. that means that one or more of the numbers is 0. because they appear in defending order we know that the digit in the ones place is 0. the only common factor of 10 and 15 is 5 so we know that our number is 5 _ _ 0. because they add up to 9 the second 2 digits have to add up to 4. the only two numbers that add up to four and are not the same(they have to be in descending order so it can't be the same digit twice) are 1 and 3 so your license plate is 5310

3 0

4 years ago

What is the value of x in the equation below 6 (x - 8) equals 72

olga_2 [115]

Here is the equation:

$6(x-8)=72$

In the equation, 6 is being multiplied by x - 8. There are two ways to solve this equation.

FIRST METHOD

<h3> $6(x-8)=72$ </h3>

You need to remove the parentheses by multiplying everything in the parentheses by 6.

$6(x-8) = (6\times x) + (6 \times -8)$

Multiply:

$6 \times x = 6x\\6 \times -8 = -48$

Remember:

NEGATIVES

Negative(-) times(×) negative(-) = positive(+)

Negative(-) times(×) positive(+) = negative(-)

Negative(-) divided(÷) by positive(+) = negative(-)

Negative(-) divided(÷) by negative(-) = positive(+)

POSITIVES

Positive(+) times(×) positive(+) = positive(+)

Positive(-) times(×) negative(-) = negative(-)

Positive(+) divided(÷) by positive(+) = positive(+)

Positive(+) divided(÷) by negative(-) = negative(-)

Now combine the two values and rewrite the equation:

$6x+-48 \rightarrow 6x-48=72$

Since you're looking for x alone, you will need to remove the -48. This can be done by adding 48 to both sides, -48+48=0, which cancels it out).

$6x-48+48=72+48\\6x=120$

Lastly, divide both sides by 6 to leave x alone.

$\frac{6x}{6} = \frac{120}{6}$

$x=20$

SECOND METHOD

While the first step is somewhat complicated, there is a much easier way.

$6(x-8)=72$

Start by dividing both sides by 6 to remove the number next to the parentheses.

$\frac{6(x-8)}{6} =\frac{72}{6}$

$x-8=12$

(The 6 is cancelled out since 6 divided by 6 equals 1, and 1 × any number is that number).

Now you need to leave the variable alone, which can be done by adding 8 to both sides(-8+8=0 and -8 is cancelled out).

$x-8+8=12+8\\$

$x=20$

Either method can be used, but the second one is definitely shorter!

The answer is x = 20.

8 0

3 years ago

Read 2 more answers