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Katyanochek1 [597]
3 years ago
8

Please help! i need to pass this class!!

Mathematics
2 answers:
svetoff [14.1K]3 years ago
6 0

Answer:

m∠B = 54°

Step-by-step explanation:

Note: Complementary angles add up to 90°

Thus, m∠A and m∠B must add up to 90.

We can then write this equation.

x - 15 + x + 3 = 90

Simplify.

2x - 12 = 80

Add 12 to both sides.

2x = 102

x = 51

m∠B is (x + 3) , so m∠B = 51+ 3 = 54°

Just in case, let's double check. Plug 39 for x into m∠A to get

m∠A = 51 - 15 = 36

Then, plug the angle measures in.

36 + 54 = 90

90 = 90

Thus, the answer is correct.

I hope this helps! Feel free to ask any questions! :)

torisob [31]3 years ago
3 0

Angle B = 54°

Step-by-step explanation:

complimentary means they add up to 90

54 + 36 (angle A) = 90

also x= 51

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X + (2x + 5) = 3(x – 4)+7
eduard

Answer:

Not true

Step-by-step explanation:

x + (2x + 5) = 3(x – 4)+7

Opening bracket on left and side and distributing 3 over (x-4) on right hand side

x+2x+5=3x-3 x 4 + 7

adding like terms

3x+5=3x-12+7

3x+5=3x-5

Hence

5 = -5

Which is not possible , Hence the equation given to us is false.

5 0
3 years ago
The sutton police department must write, on average, 6 tickets a day to keep department revenues at budgeted levels. suppose the
lakkis [162]
The Poisson distribution defines the probability of k discrete and independent events occurring in a given time interval.
If λ = the average number of event occurring within the given interval, then
P(k \, events) = e^{-\lambda } ( \frac{\lambda ^{k}}{k!} )

For the given problem,
λ = 6.5, average number of tickets per day.
k = 6, the required number of tickets per day
The Poisson distribution is
P(k \, tickets/day)=e^{-6.5} ( \frac{6.5 ^{k}}{k!} )
The distribution is graphed as shown below.

Answer: 
The mean is λ = 6.5 tickets per day, and it represents the expected number of tickets written per day.
The required value of k = 6 is less than the expected value, therefore the department's revenue target is met on an average basis.

8 0
3 years ago
Plz help me with these two questions I have no idea how to do this
viktelen [127]
(7-3+4^3/2) / (9-5)
7-3+64/2) / 4
(7-3 + 32) / 4
(4 + 32) / 4
36/4 = 9

48 + 72
24(2 + 3)

8 0
3 years ago
Find the length of MA<br> What is the area of triangle MNT?
tia_tia [17]
The length is 7 and there is no N
4 0
2 years ago
Read 2 more answers
Olivia ties 2.5 feet of ribbon on to one bollon. how many yards of ribbon does olivia need to tie 18 balloons.
Montano1993 [528]
1 yard = 3 feet
2.5×18=45 feet
45÷3= 15 yards
4 0
3 years ago
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