Ask question

Ask question

All categories

4 years ago

12

PLEASE HELP ME GUYS!!

1 answer:

Maru [420]4 years ago

5 0

Answer:

$\frac{7}{3}$

Step-by-step explanation:

csc(Ф) is equivalent to the inverse of sin(Ф)

$csc = \frac{1}{sin}$

Since sin(Ф) = 3/7, the inverse of this would be 7/3

So, $csc = \frac{1}{\frac{3}{7} }=\frac{7}{3}$

You might be interested in

Solve the equation 3^(2x) -4*3^(x+1) + 27 = 0. use rules of exponents to change 3^(x+1)

Leviafan [203]

Answer:

$\huge\boxed{x=1\ \vee\ x=2}$

Step-by-step explanation:

$3^{2x}-4\cdot3^{x+1}+27=0\\\\\text{use}\ (a^n)^m=a^{nm}\ \text{and}\ a^n\cdot a^m=a^{n+m}\\\\\left(3^x\right)^2-4\cdot3^x\cdot3^1+27=0\\\\\left(3^x\right)^2-12\cdot3^x+27=0\\\\\text{substitute}\ 3^x=t>0\\\\t^2-12t+27=0\\\\t^2-3t-9t+27=0\\\\t(t-3)-9(t-3)=0\\\\(t-3)(t-9)+0\iff t-3=0\ \vee\ t-9=0\\\\t-3=0\qquad\text{add 3 to both sides}\\\boxed{t=3}\\\\t-9=0\qquad\text{add 9 to both sides}\\\boxed{t=9}$

$\text{We return to substitution:}\\\\3^x=t\\\\3^x=3\ \vee\ 3^x=9\\\\3^x=3^1\ \vee\ 3^x=3^2\\\\\boxed{x=1}\ \vee\ \boxed{x=2}$

4 0

3 years ago

Can someone please help me?

Fittoniya [83]

Answer:

x²+4x+5

Step-by-step explanation:

i provided a picture explanation.

3 0

3 years ago

Read 2 more answers

Y/2 - (-1.12) = 3.12

ahrayia [7]

$\fbox{y=4}$

$\frac{y}{2} -(-1.12)=3.12$

Simplify:

$\frac{1}{2} y+1.12=3.12$

Subtract 1.12 on both sides:

$\frac{1}{2} y+1.12-1.12=3.12-1.12$

$\frac{1}{2} y=12$

Multiply both sides by 2:

$2\times(\frac{1}{2} y)(2)\times(2)$

$y=4$

4 0

1 year ago

What is 1/2 times 5/8???

Setler79 [48]

1/2 x 5/8 = .3125

If you plug it into the calculator.

3 0

3 years ago

Vince made a scale drawing of the middle school. He used the scale 5 inches : 8 feet. If the gym is 45 inches wide in the drawin

mrs_skeptik [129]

Scale drawings are used to show an actual image using lesser dimensions.

The width of the actual gym is 72 feet

The scale is given as:

$Scale = 5\ inches : 8\ feet$

Represent the width of the actual gym with w, so, we have the following equivalent ratio

$45\ inches : w = 5\ inches : 8\ feet$

Cancel out the common units

$45: w = 5: 8\ feet$

Express as fraction

$\frac{45}{w} = \frac{5}{8\ feet}$

Cross multiply

$5w = 45 \times 8\ feet$

Divide both sides by 5

$w = 9\times 8\ feet$

$w = 72\ feet$

Hence, the width of the actual gym is 72 feet

Read more about scale drawing at:

brainly.com/question/14934768

5 0

3 years ago