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mash [69]
2 years ago
13

It’s a 4 digit number. The tens are double the ones. The thousands are double the tens. The sum of the digit is 19

Mathematics
1 answer:
Zielflug [23.3K]2 years ago
7 0
The tens are double the ones: c= 2d
the thousands are double the tens:
a = 2c = 4d
the sum of the digits is 19:: a+b+c+ d = 19

Substitute for a and c to get:
4d + b + 2d + d = 19
b + 7d = 19
d=2;b=5;0=4;a=8
Ans:8542
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Please tell me the answer to this. Very easy points if you ask me.<br> x + 8x = ?
siniylev [52]

x + 8x = 9x

(like 1 + 8 but with x's)

4 0
3 years ago
A. 292.6 <br> b. 235.7<br> c. 471.4<br> d. 625.8<br><br> pls help
MissTica

Answer:

d. 625.8

Step-by-step explanation:

LxWxH

L=6 you

W=7 you

H=14.9 yd

(6×7)×14.9

42x14.9

625.8

3 0
3 years ago
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Mr. Moore has 5 1/4 pounds of dry fish food. He will be putting an equal amount of food into 3 containers. How much fish food wi
Scorpion4ik [409]
5 and 1/4 can be 5.25 so all you have to do is divide that by 3 and you’ll get 1.75 per container.

If you wanted to keep it as a fraction, 5 and 1/4 would become 21/4 (you do 5 x 4= 20 + 1) and for fractions I always remembered dividing as ‘Keep, Change, Flip’ so you would do 21/4 for keep. Change would be to change the sign from division to multiplication. And for Flip you would flip 3 over 1 (3/1) to 1/3

Putting that all together would be 21/4 x 1/3 which also equals 21/12 by multiplying the denominators and numerators. Then you simplify, dividing it by 3 to equal 7/4 and another simplify to be 1 and 3/4 which is 1.75.


Hope this helps!
7 0
3 years ago
John was looking at his streaming music stats. the ratio of songs he liked to disliked was 5.2. If he listened to 63 songs total
Ilia_Sergeevich [38]

Answer:

liked = 45 ; disliked = 18

Step-by-step explanation:

Let the number of songs he liked be x & disliked be y.

The ratio of x & y :-

\frac{x}{y}  =  \frac{5}{2}  \\  =  > 2x = 5y \:  \:  \:  \:

And total number of songs he listened = 63

Then, x + y = 63...................eqn.1

=> x = 63 - y

Substituting the value of x in eqn. 2x = 5y gives :-

2(63 - y) = 5y

=> 126 - 2y = 5y

=> 7y = 126

=> y = 18

Substituting the value of y in eqn.1 gives

x = 63 - 18

= 45

Hence no. of songs he liked = 45 & disliked = 18

8 0
3 years ago
F(x) = x-5, g(x) =x^2 - 1 find (f+g)
DaniilM [7]
F(x)=x-5
g(x)=x^2
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x^2+x-6
x^2+(3-2)x-6
x^2+3x-2x-6
x(x+3)-2(x+3)
(x-2)(x+3) answer
5 0
3 years ago
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