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2 years ago

Can somebody plz help answer these word prob questions plz thanks! (Grade7math( btw :)

Mathematics

1 answer:

Illusion [34]2 years ago

4 0

Answer:

3:1

8:5

Step-by-step explanation:

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A bank quotes an interest rate as 0.06341 annual effective yield. What interest rate, compounded monthly, will provide that

Leviafan [203]

9514 1404 393

Answer:

0.06164

Step-by-step explanation:

The effective annual rate obtained by compounding nominal annual rate r monthly is ...

eff rate = (1 +r/12)^12 -1

Then the value of r is ...

r = 12×((eff rate) +1)^(1/12) -1)

For the given effective rate, that is ...

r = 12×(1.06341^(1/12) -1) ≈ 0.06164 . . . . nominal annual interest rate

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3 years ago

Which expression is equivalent to -6(-2/3+2x) -4-12x -4+2x 4-12x 4+12x

Basile [38]

C. Is your answer to the question

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3 years ago

Read 2 more answers

*Will mark Brainliest (10 points)* Please explain, thanks!

MAVERICK [17]

Standard form Ax + By = C
so
(y - y1) = m(x - x1)
given (5, -7) and m = -1/5
so
y + 7 = -1/5(x - 5)
-5y - 35 = x - 5
x + 5y = -30

answer
d. x + 5y = -30

5 0

2 years ago

The temperature in buffalo, New York, one Saturday was 68F. The temperature that following Monday was 80F. Write an equation tha

Ugo [173]

the answer is 80F-68F=x

x=12

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3 years ago

Read 2 more answers

Emergency 911 calls to a small municipality in Idaho come in at the rate of one every two minutes. Assume that the number of 911

nordsb [41]

Answer: a) 30, b) 0.2138, c) 0.0820

Step-by-step explanation:

Since we have given that

X be the number of calls in 1 hour = 60 minutes

Rate of one call every two minutes.

$\lambda=\dfrac{1}{2}$

(a) What is the expected number of 911 calls in one hour?

$\lambda=\dfrac{1}{2}\times 60=30$

(b) What is the probability of three 911 calls in five minutes? If required, round your answer to four decimal places.

$\lambda=\dfrac{1}{2}\times 5=2.5$

Number of calls = 3

So, P(X=3) is given by

$P(X=3)=\dfrac{e^{-\lambda}\lambda^x}{x!}\\\\P(X=3)=\dfrac{e^{-2.5}\times (2.5)^3}{3!}\\\\P(X=3)=0.2138$

(c) What is the probability of no 911 calls during a five-minute period? If required, round your answer to four decimal places.

$P(X=0)=\dfrac{e^{-2.5}(2.5)^0}{0!}=0.0820$

Hence, a) 30, b) 0.2138, c) 0.0820

4 0

3 years ago