What is the measure of the angle formed by a side of the given angle and the given angle's bisector? c 172° and b 171°30'

Francine has $4.35 in dimes and quarters. The number of dimes is five more than the number of quarters. How many of each coin do

Leya [2.2K]

344676 I hope that helps

6 0

3 years ago

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Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.

Anarel [89]

Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59

Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm

Given that the density of air at room temperature is $0.00118g/cm^3$ , thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg

Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 = 8.88 mg.</span>

7 0

3 years ago

Select all expressions that are equivalent to 2x+2+4x-2x-5 **

Umnica [9.8K]

The answer that you’re looking for is B & D

6 0

3 years ago

Find the derivative of y with respect to the appropriate variable<br> y=cos^-1(x^2)

Ksju [112]

Answer:

a. Practically speaking, you compute the differential in much the same way you compute a derivative via implicit differentiation, but you omit the variable with respect to which you are differentiating.

Aside: Compare this to what happens when you differentiate both sides with respect to some other independent parameter, say :

b. This is just a matter of plugging

Step-by-step explanation:

like if this was helpful

3 0

3 years ago

What values for theta (0 less than or equal to theta less than equal to 2pi) satisfy the equation?

Novosadov [1.4K]

Solve this as you would an equation that does not involve trig. Don't let the trig scare you. If you had to solve 2x+8=0, the first thing you would do is factor out the common 2. In our equation, we have a common cos theta. I'm going to use beta as my angle. When we factor out beta, here's what we have. $cos \beta (2sin \beta +1)=0$ . The Zero Product Property tells us that at least one of those factors has to equal zero. So we set them both equal to zero and solve. Let's get the equations first, then we will need our unit circle. First equation set to equal zero is $cos \beta =0$ . On our unit circle, cos is the value inside the parenthesis that is in the x position within our coordinate. Look at all those coordinates as you go around the unit circle once (once around is equivalent to 2pi). You will find that the the cos is 0 at $\frac{ \pi }{2}, \frac{3 \pi }{2}$ . The next equation is $2sin\beta +1=0$ . Move the 1 over by subtraction and divide by 2 to get $sin \beta =- \frac{1}{2}$ . Same as before, go around the unit circle one time and look to see where the coordinate in the y place is -1/2. Sin corresponds to the y coordinate. You will find that sin is -1/2 at $\frac{7 \pi }{6}, \frac{11 \pi }{6}$ . And there you go! Trig is so much fun!!!

7 0

3 years ago