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3 years ago

Find the mesure of angle b

Mathematics

2 answers:

Fantom [35]3 years ago

5 0

Answer:

It's C

Step-by-step explanation:

because there is a 90 degrees sigh behind it and those two angles need to add up to 90

Basile [38]3 years ago

5 0

Answer:

Step-by-step explanation:

b+59=90

b=90-59

b=31

hope it helps

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To drive safely along a road, drivers need to maintain a speed of at least 50 miles per hour and at most 60 miles per hour. Writ

elixir [45]

Answer:

50 -60= and that is it

Step-by-step explanation:

3 0

3 years ago

15 POINTS: A motorboat traveling downstream covers the distance between port M and port N in 6 hours. Once, the motorboat stoppe

pav-90 [236]

Answer: S=18

Step-by-step explanation:

D = distance between M and N

S = speed of the boat

S + 2 = speed down streem

S - 2 = speed upstream

T = time on the downstream leg until the boat made its turn

9-T= time on the upstream leg

6(S + 2) = D

T (S + 2) = D - 40

(9-T)(S-2) = D - 40

now we have 3 equations and 3 uknowns

lets multply everything out

6S + 12 = D

ST + 2T = D - 40

9S - 18 - ST + 2T = D - 40

add the second 2 together to get rid of the ST term

9S - 18 + 4T = 2D - 80

and lest subtract them from one annother

2ST - 9S + 18 = 0

if we can find T in terms of S we will have a quadratic equation, and will be able to use the quadratic formula / factor

9S - 18 + 4T = 2(6S + 12) - 80

9S - 18 + 4T = 12 S + 24 - 80

4T = 3S - 38

T = 0.75 S - 9.5

2S(0.75 S - 9.5) - 9S + 18 = 0

1.5 S^2 - 28 S + 18 = 0

S = 18, 2/3

now it doesn't make sense for S to equal -2/3 as it suggests the boat moves backward when it is going up stream. (and that it travels downstream for negative time)

S = 18

8 0

3 years ago

If g(x) = 2(x − 4), find the value of x if g(x) = 20. 32 12

nlexa [21]

Answer:

The value of x is $14$

Step-by-step explanation:

we have

$g(x)=2(x-4)$ ------> equation A

In this problem we have

$g(x)=20$

Substitute the value of g(x) in the equation A and solve for x

$20=2(x-4)$

Divide by $2$ both sides

$20/2=2(x-4)/2$

$10=(x-4)$

Adds $4$ both sides

$10+4=(x-4)+4$

$x=14$

6 0

4 years ago

Read 2 more answers

Write the following equation. The sum of four times a number, and 3, is equal to three times the number.

svetlana [45]

Answer: 4x+3=3x

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Suppose you would like to save P9000 invested at 8% compounded quarterly for 5 years and 6 months. (Note: Round off your answer

Sever21 [200]

Answer:

a) 13913

b) 4913.82

Step-by-step explanation:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

In this question:

Investment of 9000, so $P = 9000$