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notsponge [240]
2 years ago
14

Sorry um but help pleasee

Mathematics
2 answers:
Lisa [10]2 years ago
7 0

Answer:

#1 = 2

Step-by-step

exis [7]2 years ago
4 0

Answer:

For the first one the answer is the 2nd and 3rd one

Step-by-step explanation:

the 2nd one is the 2nd and 3rd one

make brainliest please

I hope i am rigth

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john currently has enough money to buy 45 books. If the cost of each book was 10 cents less.john could buy 5 more books. How muc
SVEN [57.7K]
Let the cost of one book= x cents
Let the money john have= y cents

According to the question,

45x=y                                               ...eq(1)
(45+5)(x-5)=y                                  
50(x-5)=y                                         
50x-250=y                                        ...eq(2)

On subtracting (1) from (2).
(50x-250)-45x=y-y
5x-250=0
x=250/5
x=50

Thus, cost of each book is 50 cents and john has 2250 cents.

Hope it helps.
Don't feel shy in saying thx if it helps.


4 0
3 years ago
Are the triangles congruent?
Bezzdna [24]

Answer:

yes by SAS

it is Side angle Side

5 0
2 years ago
In 8 years, Sophia's age will be 21 years old. Let x represent Sophia's current
Aloiza [94]

Answer:

a. x+8=21

b. x = 13

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
REE PLEASE HELP ASAP!!!!!
Drupady [299]

the last one i think

3 0
2 years ago
How many 3 digit palindromes are divisible by 9?
ludmilkaskok [199]

Interesting problem.

A palindrome is a number which is identical when read/interpreted left-to-right or right-to-left.   For example, 14241 is a palindrome, so is 444444.


A three digit palindrome must be made up of two distinct digits only, one for the first and last digits, and one for the middle, for example, 424, or 515, etc.


For a number to be divisible by 9, the sum of the digits must add up to a multiple of 9, such as 0, 9, 18, 27, etc.


We can now form a table of the possible 3-digit palindromes divisible by 9, starting with the first/last digits (=A), and finding the middle digit (=B).  The number is therefore represented by the pattern ABA.

For example, when A=1, we have the number 1B1.  For the number to be divisible by 9, B=7 so that sum=1+7+1=9, which is divisible by 9.

For each value of A (from 1 to 9) we can only find one value of B that makes the number divisible by 9.   Thus we can only find nine such numbers, with A equal to 1 to 9.

Here's a list of the numbers

A   B   number

1    7    171

2   5    252

3   3    333

4   1     414

5   8    585

6   6    666

7   4    747

8   2   828

9   0   909

3 0
3 years ago
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