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emmainna [20.7K]
2 years ago
5

Simplify the expression -4 + 3 + 5 =

Mathematics
1 answer:
xenn [34]2 years ago
8 0

Answer:

4

Step-by-step explanation:

-4+3=-1

-1+5=4

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Lol again another math solver help pls! LOL
gladu [14]

Answer:

b = 4

Step-by-step explanation:

5-1=5b-4b

4=b

4 0
2 years ago
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Dina and Masha start cycling on a 20 km bike path at the same time. When Dina reaches the end of the path, Masha still has 4 km
sammy [17]

Answer:

0.5 hour

Step-by-step explanation:

Given

Speed of Dina = 10 km/h

Distance = 20 km

So the time Dina taken to complete the track is:

Speed=\frac{distance}{time}\\10=\frac{20}{time}\\time=\frac{20}{10}\\ time=2\ hours

The time taken by Dina is 2 hours. As masha started with dina but she was 4 km of the path left to cycle,

her distance covered in 2 hours was:

Distance\ covered\ by\ Masha\ in\ 2\ hours=20-4\\=16 km

So we know the time and distance:

Now,

Speed\ of\ Masha=\frac{distance}{time}\\ =\frac{16}{2}\\ =8\ kilometer\ per\ hour

We have to calculate the time that will be needed by MAsha to complete the track:

As we know the speed and remaining distance

Speed=\frac{distance}{time}\\8=\frac{4}{time}\\ time=\frac{4}{8}\\time=0.5\ hours

Masha needs 0.5 hour to complete the track ..

7 0
3 years ago
Read 2 more answers
Let f(x)= 7-2x Find a. f(4) b. f(h) c. f(4) + f(h) d. f(3+h)
anyanavicka [17]

Step-by-step explanation:

a) f(4) = 7-2(4)

= -1

b) f(h) = 7-2(h)

= 7-2h

c) f(4) + f(h) = -1 +(7-2h)

= 6-2h

h = 3

d) f(3+h) = 7-2(3+h)

= 7-6-2h

= -1-2h

2h= -1

h = -1/2

p/s = if the real answer is different with my answer, tell me also please. Im just a student that still learning.

4 0
2 years ago
Please Help. I’m confused. I will give Brainliest Answer.
RUDIKE [14]

Answer:

A

Step-by-step explanation:

The other situations do not represent a 60% probability.

B is a situation in which 40% of people prefer aisle seats.

C is a situation in which 33% of people prefer aisle seats

D is a situation in which 66% of people prefer aisle seats.

3 0
3 years ago
What’s 9/4 - 9/8 need it in a reduced fraction
Tasya [4]

Answer:

9/8 or 1 1/8

Step-by-step explanation:

9/4 - 9/8

Need a common denominator, multiply 9/4 x 2/2

18/8 - 9/8

Subtract the top numbers

18-9 = 9

The eight stays the same

9/8 or 1 1/8

7 0
3 years ago
Read 2 more answers
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