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Zanzabum
2 years ago
5

Jesse and her family are painting their house. When they first started, they bought four 16-cup cans of paint. In order to paint

their house, it took all of those cans plus they needed another 16-cup can of paint. How many cups of paint did it take Jesse and her family to paint their house?
Mathematics
1 answer:
yan [13]2 years ago
8 0

Answer:

80

Step-by-step explanation:

yes

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Solve the equation 2cosA = 3tanA
zavuch27 [327]
\bf sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\\\\
-----------------------------\\\\

2cos(A)=3tan(A)\implies 2cos(A)=3\cfrac{sin(A)}{cos(A)}
\\\\\\
2cos^2(A)=3sin(A)\implies 2[1-sin^2(A)]=3sin(A)
\\\\\\
2-2sin^2(A)=3sin(A)\implies 2sin^2(A)+3sin(A)-2

\bf \\\\\\
0=[2sin(A)-1][sin(A)+2]\implies 
\begin{cases}
0=2sin(A)-1\\
1=2sin(A)\\
\frac{1}{2}=sin(A)\\\\
sin^{-1}\left( \frac{1}{2} \right)=\measuredangle A\\\\
\frac{\pi }{6},\frac{5\pi }{6}\\
----------\\
0=sin(A)+2\\
-2=sin(A)
\end{cases}

now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1

now, we have -2 = sin(A), which simply is out of range for a valid sine, so there's no angle with such sine

so, only the first case are the valid angles for A
8 0
2 years ago
A right triangle has a rise of 16 and a run of 4.
Pie

Answer:

5/4

Step-by-step explanation:

Make a proportion:

16/4 = 5/x

Cross Multiply:

20 = 16x

x = 5/4

5 0
2 years ago
Read 2 more answers
Find the measure of angle 3=
andre [41]

Answer: <em>50°</em>

Step-by-step explanation:

<em>Since angle 3 is in a right triangle we can assume one angle is 90°</em><em> </em><em>and then the other missing angle will be 40°</em>

<em>Because you take 180°-140°(the angle next to it) which will equal 40°</em>

<em>Now every triangle must add up to 180°</em>

<em>so lets take the angles we have now</em>

<em>90° +40°=130°</em>

<em>now take that 130°</em>

<em>180°-130°=</em><em>50°</em>

<em>Now check your work</em>

90°+40°+50°=180°

Angle 3 is 50°

5 0
3 years ago
Dogs are inbred for such desirable characteristics as blue eye color, but an unfortunate by-product of such inbreeding can be th
Agata [3.3K]

Answer:

<h2>Option 2 is the right answer.</h2>

Step-by-step explanation:

We need to check if the two characteristics, <u>having blue eyes and being deaf are independent of each other or not</u>.

The above two characteristics will be independent if [Probability of being deaf with blue eyes] = {Probability of being deaf } {Probability of having blue eyes}

Now, the probability of having blue eyes is \frac{31}{100}.

The probability that the Dalmatians will be deaf is \frac{38}{100}.

The probability of being deaf with blue eyes is \frac{31}{100} \times\frac{42}{100}.

Since, 38 is not equals to 42, the two characteristics are not independent.

3 0
2 years ago
Alfred tosses a quarter and then rolls a six-sided number cube. What is the total number of outcomes for this event?
algol13

Answer:

6

Step-by-step explanation:

quarter and 1

quarter and 2

quarter and 3

quarter and 4

quarter and 5

quarter and 6

8 0
2 years ago
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