3 years ago

Select the correct answer.

Mathematics

1 answer:

Serhud [2]3 years ago

8 0

Answer:b

Step-by-step explanation:

You might be interested in

Solve for x in x²+8x+15=0 in factorisation method

Genrish500 [490]

Answer: $x=-5, -3$

Step-by-step explanation:

$x^2 +8x+15=0\\\\(x+5)(x+3)=0\\\\x=-5, -3$

7 0

2 years ago

Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph.

MakcuM [25]

Answer:

Distance to appointment point = 5 miles

Step-by-step explanation:

Let s be the distance to the appointment point,

We have Maria drove to a business appointment at 50mph in the morning.

Time taken in the morning

$t_m=\frac{s}{50}=0.02s$

Her average speed on the return trip in the afternoon was 40 mph.

Time taken in the afternoon

$t_a=\frac{s}{40}=0.025s$

Given that the return trip took 1/4hr longer because of traffic.

That is

$t_a-t_m=\frac{1}{4}hr=0.025hr$

Substituting

$t_a-t_m=0.025hr\\\\0.025s-0.02s=0.025\\\\s=5miles$

Distance to appointment point = 5 miles

7 0

3 years ago

What is the best definition for “sample” as used in statistics? *

AVprozaik [17]

Answer:

a part of the population that represents the entire population

Step-by-step explanation:

6 0

3 years ago

What theorem or postulate can be used to justify that HIG=FIE

oksano4ka [1.4K]

Answer:

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Help plz!! Show work , need help on this

lilavasa [31]

Answer:

Step-by-step explanation:

n = 3 => f(n) = -4*-3+8 = -44

n= 0 => f(n) = -4*0+8 = 8

n= 2 => f(n) = -4*2+8 = 0

n= 7 => f(n) = -4*7+8 = -20

5 0

3 years ago