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salantis [7]
2 years ago
15

18kg in the ratio 2:7​

Mathematics
1 answer:
fredd [130]2 years ago
8 0

Answer:

Step-by-step explanation:

Let the ratios be 2x and 7x respectively.  

Now,

2x + 7x = 18

= 9x = 18

= x = 18/9

= x = 2

Hence, 2x = 2*2 = 4

And, 7x = 7*2 = 14

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umka21 [38]

Answer:

yes your answer is 45 degree

8 0
2 years ago
Read 2 more answers
The jar only contains nickels and dimes altogether there are 10 coins total of the value is 90 cents how many nickels and how ma
lilavasa [31]
Write a system of equations and solve.

x + y = 10
5x + 10y = 90

Multiply and combine equations

-5x - 5y = -50
5x + 10y = 90
------------------
5y = 40
y = 8
x = 2

There are 2 nickels and 8 dimes in the jar. Hope this helps! :)
3 0
3 years ago
There are 33 questions on Allison's
Brums [2.3K]

Answer:

x=15

y=18

Step-by-step explanation:

then x+y=33

and 2x+5y=120

then x=33–y

since 2x+5y=120

then 2(33–y)+5y=120

then 66–2y+5y=120

then 66+3y=120

then 3y=120–66

then 3y=54

then y=54/3

then y=18

then x=33–18=15

4 0
3 years ago
Is (3,-4) a solution of x=-4
jekas [21]

Answer:

no

Step-by-step explanation:

3 is the x coordinate/ integer and -4 is the y coordinate and the integer so it wouldn't make sense

x=  3 is a solution

and id you don't understand the first thing i said watch this

#1. 3, - 4

#2. x= - 4

#3. substitute/replace the x with what the x coordinate is

#4. it will be 3= - 4

#5. as you can see the numbers don't equal each other so it's a no solution

4 0
3 years ago
Chad boughtsome things at the store he paid for them was $6 he received $4.52 in change how much did the things that he bought c
avanturin [10]

Answer:$1.08 cents.

Step-by-step explanation:

$6 - $4.52 = $1.08.

6 0
2 years ago
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