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
Anika [276]
3 years ago
14

Use the digits 0-9, find out how many 4 digit numbers can be configured based on the stated conditions:

Mathematics
1 answer:
Alexeev081 [22]3 years ago
3 0
A) On the first place we can put 9 digits, on the second 9, on the third place 8 and on the last place 7 ( because no digits can be repeated ):
9 · 9 · 8 · 7 =4536 numbers
b) There are 5 odd digits can be repeated. So:
5 · 10 · 10 · 5 = 2500 numbers
c) On the first place we can put:5,6,7,8,9 (5 digits) On the last place is just one (0), because the number must be divisible by 10:
5 · 10 · 10 · 1 = 500 numbers
d) on the first place we can put 2 digits ( 1, or 2 - there are no 4-digit numbers starting with 0). The last digit must be even, but the order can be:
X - odd - odd - even           2 · 5 · 4 ·  5 = 200
X - odd - even - even         2 · 5  · 5 · 4 = 200
X - even - odd - even         2 · 5  · 5 · 4 = 200
X - even - even - even       2 · 5 ·  4 · 3 = 120 
Finally: 200+ 200 + 200 + 120 = 720 numbers
You might be interested in
I= $169.67,P= $2000,t= 8 months
olga55 [171]

If ur trying to find the rate its 12.7252%

Step-by-step explanation:

3 0
3 years ago
Question 1:
AnnyKZ [126]

Answer(1):

Given that h(y)=2y-7.

h(8) means  plug y=8 into h(y)=2y-7.

h(8)=2*8-7=16-7=9

Hence C) 9 is the final answer.


Answer 2:

(7/8) = (m/32)

to solve for m, we begin by cross multiply

8m=7*32

8m=224

m=28

Hence choice C) 28 is final answer.


Reflection symmetry occurs when a line is drawn to divide a shape in halves so that each half is a reflection of the other.


Rotational symmetry is to check if the given picture is symmetric after some rotation.


Answer 3:

Letter "E" will have

B) the letter has reflection symmetry only

So B) is correct.


Answer 4:

Which statement is true?

Letter "Z" will have

B) the letter has rotation symmetry only

Hence B) is correct.


Answer 5:

Letter "X" will have

A) the letter has both reflection and rotation symmetry

Hence A) is correct.

5 0
3 years ago
Read 2 more answers
What is the length of the red segment in the graph below?
Anon25 [30]

Answer: b 1.20

Step-by-step explanation:

b 1.20

7 0
2 years ago
2 questions in the 2 pictures and then im done thank you
Tamiku [17]

Answer:

Hey there!

For the first question we use the triangle area formula: 1/2bh, or 1/2(8)(5). This gives us 20 for the area.

For the second question we get a trapezoid, since the cross section does not pass through the vertex.

Hope this helps :)

3 0
3 years ago
Help for brainliest answer
guajiro [1.7K]

Step-by-step explanation:

SA=ph+2A, that is, perimeter × height+ twice area

p=21+20+29=70cm

h=22cm

70×22=1540cm

A=1/2 ×20×21=210×2=420

1540+420=1960cm2

8 0
2 years ago
Other questions:
  • WILL GIVE BRAINLIEST!!!!!!
    6·1 answer
  • A flying disc has a radius of 6 inches. What is the area of one side of the flying disc to the nearest square inch? Use 3.14 as
    10·1 answer
  • If f(x)=x^2 and g(x)=1÷2x+3 find g(f(-1))
    13·1 answer
  • I need help with this one please d÷12=1/6
    12·2 answers
  • The half-life of a radioactive kind of
    7·2 answers
  • 8x-6+2x=44 what does x equal
    15·2 answers
  • A triathlon course includes a 400m swim,a 40.1km bike ride,and a 12.2km run what is the total length of the course
    8·1 answer
  • Help pleaseeeeeeeeee
    8·2 answers
  • QUESTION 15
    8·1 answer
  • Triangles T S R and Q R S overlap at point P. Angle S T R is 66 degrees and angle S Q R is 66 degrees. The lengths of T S and Q
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!