1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivanzaharov [21]
3 years ago
5

Simplify the expression -4.6+( -1.4) .on the test , when maureen simplified the expression she got 3.2 .

Mathematics
1 answer:
Sav [38]3 years ago
4 0

Answer:

Step-by-step explanation:

-4.6+( -1.4)=

-4.6-1.4=-6 maureen is wrong, because both have the minus , so she should add with the minus symbol.

You might be interested in
A farmer was counting his chickens and pigs. He had 16 animals in all and counted 54 legs. How many chickens does he have
Vikentia [17]

Answer:

5 chickens

Step-by-step explanation:

Let's set chickens and pigs with variables "c" and "p" respectively.

We know there a 16 animals in all, so there are:

c+p=16

We know there are 54 legs and chickens have 2 legs and pigs have 4 legs each:

2c+4p=54

Now we have our system of equations:

c+p=16

2c+4p=54

We are trying to find the number of chickens, so we write the first equation in respect to c.

p=16-c

Substituting the first derived equation to equation two:

2c+64-4c=54

Simplifying:

64-2c=54

2c=10

c=5

So there are 5 chickens.

8 0
3 years ago
You are given a circle of radius 12. What is the segment area of an arc that is 90 degrees?
Pachacha [2.7K]

Answer:

36π - 72 sq in.

Step-by-step explanation:

π×12² = 144π

90/360 × 144π = 36π

Triangle = ½ × 12 × 12 = 72

Segment = 36π - 72

7 0
3 years ago
Read 2 more answers
Many people feel that the drying of pavement marking paint is much too slow. You spend several days looking for the fastest dryi
slavikrds [6]

Answer:

21

Step-by-step explanation:

Using<em> Simple Random Sampling</em>, we can estimate the sample size by the formula

\bf n=\frac{Z^2S^2}{e^2}

where  

n = sample size

Z = the z-score corresponding to the confidence level 99.5%

S = the assumed standard deviation = 3 seconds

e = margin of error = 2 seconds

<em>It is worth noticing that the higher the confidence level, the larger the sample should be. </em>

The z-score corresponding to a confidence level of 99.5% can be obtained either with a table or the computer and equals

Z = 3.023

Replacing the values in our formula

\bf n=\frac{(3.023)^23^2}{2^2}=20.5616\approx 21

So the size of the sample should be at least 21.

7 0
3 years ago
Determine whether the graph can represent a normal curve. If it cannot, explain why.
FromTheMoon [43]

Answer:

The answer would be C

Step-by-step explanation:

The answer would be C because It is the most resnible and becaue I took that not to long ago.

Hope this helps

Please give me Brainliest

7 0
3 years ago
Write the ratio in simplest form: 27 red markers to 12 blue markers
elena-14-01-66 [18.8K]
What do you mean by this? Do you have a picture
6 0
3 years ago
Other questions:
  • A wise man gave his students this riddle; “how old am I if 400 reduced by three times my age is 175
    9·1 answer
  • A scientist is observing the grizzly bear population in two state parks. The parks each have 150 bears when he begins observing
    7·2 answers
  • Which is shorter 96in or 12ft
    8·1 answer
  • Help plz which one is it?
    8·1 answer
  • The five interior angles in a  pentagon are in the ratio 2:3:4:5:6. What is the measure of the pentagon's largest angle?
    15·1 answer
  • Need help with this problem pls
    7·1 answer
  • Solve each equation.<br> |n+3|+8=15
    5·2 answers
  • Rate of change of y respect to x as y=4-5/8x
    14·1 answer
  • Need help please help I got time limit
    11·1 answer
  • Find the total surface area of the shape
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!