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2 years ago

Please help im stuck

Mathematics

1 answer:

Nadusha1986 [10]2 years ago

5 0

The answer is y=3x-12

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A boat traveled 150 miles downstream (with the current) and back (against the current). The trip downstream took 10 hours. The t

Margarita [4]

Answer:

b= 10 miles/hr and c= 5 miles/hr

Step-by-step explanation:

Let it's downstream and upstream speed be d and u respectively

also speed of the boat be b and speed of stream be c.

as per question d = 150/10= 15 miles/hr

and, u= 150/30= 5 miles/hr

also we know d= b+c = 15.....i and u = b-c= 5....ii

solving i and ii we get b= 10 miles/hr and c= 5 miles/hr

3 0

3 years ago

Samantha sends her son, Barry, to a preschool center on certain days. The cost of preschool is $45 per day along with a fixed mo

Travka [436]

Answer: Option D

D. $880 = 45d + 70$ ; $18\ days$

Step-by-step explanation:

We know that the cost of preschool is $ 45 per day plus a monthly fee of $ 70.

We also know that a total of $ 880 was paid last month

To write an equation that represents this situation, let us call "d" the number of days that Barry attends school

So the cost was:

$45d + 70 = 880$

Now we solve the equation for the variable d

$45d= 880-70$

$d= \frac{810}{45}$

$d= 18\ days$

Therefore answer is the option D

8 0

3 years ago

A spinner has ten equal sectors labeled from 1 to 10. The spinner is spun once.

trapecia [35]

Answer:

With probability you can multiply your chances in this case.

Getting an odd number: 1/2

Getting a number greater than 4: 1/6

Therefore it is a 1/12 chance to be both odd and greater than 4

8 0

3 years ago

Read 2 more answers

What is the reciprocal of<br> 8/5

azamat

Answer:

0.025

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

It is estimated that 91% of senior citizens suffer from sleep disorders and 9% suffer from anxiety. Moreover, 6% of seniors suff

Fofino [41]

The probability of senior citizens suffer from sleep disorders is

$P(A)=0.91$

The probability of senior citizens suffer from anxiety is,0.09.

$P(B)=0.09$

The probability of seniors suffer from both sleep disorders and anxiety is,

$P(A\cap B)=0.06$

a. The probability that a senior citizen suffers from anxiety, given that he or she has a

sleep disorder.

$P(A|B)=\frac{P(A\cap B)}{P(B)}$ $P(A|B)=\frac{0.06}{0.09}$ $P(A|B)=0.67$

8 0

1 year ago