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Lesechka [4]
3 years ago
12

Don is 7 years younger than maggie. the sum of their ages is 25. how old is don

Mathematics
2 answers:
inn [45]3 years ago
8 0
Don would be 9......

xz_007 [3.2K]3 years ago
6 0
D=m-7
d+m=25
m-7+m=25
2m-7=25
2m=32
m=16
d=16-7
d=9

don is 9
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A store is having a sale to celebrate president's Day. Every item in the store is advertised as one fifth off the original price
olya-2409 [2.1K]
1/5th off = 20% off

80% = $140
1% = $1.75
100% = $175

Answer is $175
6 0
3 years ago
If x+y=10 and x-y =6 what is the answer of x cube - y cube fast​
AfilCa [17]

Answer:

x+y=10 which means that x=10-y

Replace 10-y in the other equation which gives you:

10-y-y=6

10-2y=6

-2y=-4

y=2

Replace 2 in any of the 2 equations same answer for both:

x+y=10

x+2=10

x=8

So,

{x}^{3} - y^{3}

=  {8}^{3}  -  {2}^{3}

=512-8

=504

Hope this helps!

4 0
3 years ago
If y varies inversely as the square of x, and y = 1/8 when x = 1, find y when x = 5.
Kisachek [45]
Y = k / x² ( y varies inversely as the square of x ) 
y = 1/8 when x = 1:
1/8 = k / 1²
8 k = 1
k = 1/8
For x = 5:
y = 1/8  / 5² = 1/8 : 25 = 1/8 · 1/25 = 1/200
Answer: A ) 1/200


6 0
3 years ago
A class is 5 months long there are 2 weeks left what percent of class have we completed.
liraira [26]
Answer: 90%

There are about 4 weeks in a month so 4•5=20

Then subtract 2 from 20

Divide 18 by 20 which will equal .9 and covert to percent
6 0
3 years ago
Suppose f(x)=x^2. what is the graph of g(x)=1/3 f(x)
saw5 [17]

Step-by-step explanation:

f(x) = x^2

g(x)= 1/3 f(x) = 1/3 x^2

First lets make a table for f(x)= x^2

Lets pick some numbers for x  and find out y

x           y=x^2

-3           (-3)^2 = 9

-1              1

0             0

1              1

3             9

Now we use the same x  values and make a table for g(x)

x         g(x)= \frac{1}{3} x^2

-3          g(x)= \frac{1}{3}(-3)^2=3

-1          g(x)= \frac{1}{3}(-1)^2=\frac{1}{3}

0             0

1           g(x)= \frac{1}{3}(1)^2=\frac{1}{3}

3          g(x)= \frac{1}{3}(3)^2=3

Graph the above table



6 0
3 years ago
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