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
tester [92]
3 years ago
8

Is -18.75 a real number,irrational,rational,integer,whole or natural? it can be more than one choice

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0
It's irrational, number and intiger
You might be interested in
A phone was purchased for $318. Each year the value is 1/2 of its value the previous year. Write a function that describes the v
zubka84 [21]

Answer:

y=318(1-0.5)^x

Step-by-step explanation:

x represents the amount of years and y is the ending price

8 0
3 years ago
Evaluate the following expression. (-3)-2
harkovskaia [24]
Integers are whole numbers that are either positive or negative. Operation of signs is important when dealing with integers.
In this case, -3 and -2 are integers that are being added.
if we add -3 by -2 we get -6 because when a negative number is added to a negative number the negative sign does not change
thus, (-3)-2 = -5
3 0
3 years ago
Solve for x. (16x + 23)°
erma4kov [3.2K]
16x +23
-16 -16
X = 7....................
6 0
2 years ago
Draw an area model to multiply 1.1 x 2.4
Lemur [1.5K]
1.1
×
2.4
____
 44 
+
 22
____
.66
I think this is it I did this when I was in 5th grade so I don't remember that much might wanna check with an adult.
6 0
3 years ago
The mean number of children among a sample of 15 low-income households is 2.8. The mean number of children among a sample of 19
gtnhenbr [62]

Answer:

Step-by-step explanation:

Let's put the data as below:

n1=15    x1=2.8      s1=1.6       and s1²=2.56

n2=19   x2=2.4     s2=1.7        and s2²=2.89

alpha= 0.05

To test the hypothesis:

H0= There is no sufficient evidence that low income household have fewer children

H1=There is sufficient evidence that low income household have fewer children

Assume that population variances are equal.

the t-static for two samples,

t=\frac{x1-x2}{Sp\sqrt{\frac{1}{n1}-\frac{1}{n2} \\} } } ~t with min (n1-1,n2-1)df

The pooled variance estimate Sp equals:

Sp^{2}=\frac{(n1-1)s1^{2}+(n2-1)s2^{2}  }{n1+n2-2}

Sp²=2.7456

Sp=1.65699

Degrees of freedom=n1+n2-2=32

Under null hypothesis:

tcal=\frac{|2.8 - 2.4|}{1.6599\sqrt{\frac{1}{15}+\frac{1}{19}  } }

tcal=0.6989

The critical value ttab=2.0369 for alpha=0.05

So we reject our null hypothesis H0

So there is sufficient evidence that low income households have fewer children than high income households

6 0
3 years ago
Other questions:
  • Which of the following represents a geometric sequence? I 1/4, 1/4, 1/4, 1/4 II 1/4, 1/5, 1/6 III 1/4, 1, -4, 1/6 IV 1/4, -4, 1/
    7·2 answers
  • What do you think the difference is between a shape being congruent or similar?
    5·1 answer
  • CAN SOMEONE PLEASE HELP ME WITH THESE PEOPLE​
    5·1 answer
  • Please HELP HELP HELP ME
    10·2 answers
  • At a movie theater tickets for children cost 6.5 dollars each and adult tickets cost $8.75 each if tickets sales for a group of
    5·1 answer
  • Complete the sentence the length of a segment from a vertex to the centroid is the length of the median from that vertex
    13·1 answer
  • HELP ASAP! What is the smallest positive number that can be added to 55 so that the resulting number and 45 have 9 as their grea
    7·1 answer
  • -7+ 3x-2(3x+4)= 5(2x-3) + 4 (3x - 1) - 4.
    15·1 answer
  • Get more math help pls
    12·2 answers
  • Help asap check picture
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!