David's age: x
Joshua: x + 5
Simon: (x+5) + 4 or x + 9
Simon's age + David's age = 15
(x+9) + (x) = 15
2x = 15 - 9
2x/2 = 6/2
x = 3
The ages of the boys:
David: x = 3 years old
Joshua: 3+5 = 8 years old
Simon: 3+9 = 12 years old
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Step-by-step explanation:
eog=90
27+3y=90
3y=63
y=21
aob=180
x+90+3x+18=180
x+3x+108=180
4x=180-108
4x=72
x=18
good luck dude
7
Step-by-step explanation:
(x - 3)² = 16
x² - 6x + 9 = 16
x² - 6x + 9 - 16 = 0
x² - 6x - 7 = 0
(x - 7)(x + 1)
x = 7 \/ x = -1
so positive value of <u>x = 7</u>
Answer:
4 11/20
Step-by-step explanation:
We can start by converting all the fractions into improper fractions:
1 4/5= 4/5+5/5=9/5
2 3/20= 40/20+3/20=43/20
This means the equation would be
9/5+(43/20+3/5)=
We now need to get a common denominator.
We can do this by multiplying 9/5 and 3/5 both by 4/4.
This said, 9/5 would become 36/20
and 3/5 would become 12/20
Our equation is now:
36/20+43/20+12/20=
This equals
91/20
which simplifies to
4 11/20
Answer:
0%
Step-by-step explanation:
There are 4 navy shirts.
There are 12 red shirts.
The rest are white.
That means there isn't any green shirts.