so, it went down from 1250 to 1000, namely 1250 - 1000 = 250.
now, if we take 1250 to be the 100%, what is 250 off of it in percentage?
![\bf \begin{array}{ccll}amount&\%\\\cline{1-2}1250&100\\250&x\end{array}\implies \cfrac{1250}{250}=\cfrac{100}{x}\implies 5=\cfrac{100}{x}\implies x=\cfrac{100}{5}\implies x=20](https://tex.z-dn.net/?f=%5Cbf%20%5Cbegin%7Barray%7D%7Bccll%7Damount%26%5C%25%5C%5C%5Ccline%7B1-2%7D1250%26100%5C%5C250%26x%5Cend%7Barray%7D%5Cimplies%20%5Ccfrac%7B1250%7D%7B250%7D%3D%5Ccfrac%7B100%7D%7Bx%7D%5Cimplies%205%3D%5Ccfrac%7B100%7D%7Bx%7D%5Cimplies%20x%3D%5Ccfrac%7B100%7D%7B5%7D%5Cimplies%20x%3D20)
Answer: The numbers are 4 and 6.
Step-by-step explanation:
Let one number be represented as
x
and the other as
y
.
According to the problem:
x
=
2
3
y
and
x
+
y
=
10
From the second equation we get:
x
+
y
=
10
∴
y
=
10
−
x
(subtracting
x
from both sides)
Replacing the value of
y
in the first equation we get:
x
=
2
3
y
x
=
2
3
(
10
−
x
)
Multiplying both sides by
3
we get:
3
x
=
2
(
10
−
x
)
Opening the brackets and simplifying we get:
3
x
=
20
−
2
x
Add
2
x
to both sides.
5
x
=
20
Divide both sides by
5
.
x
=
4
Since from the second equation we have:
x
+
y
=
10
substituting
x
with
4
we get:
4
+
y
=
10
Subtract
4
from both sides.
y
=
6
Answer:it's C!!
Step-by-step explanation:
(5x+7) + (8x-21) = 90
13x-14 = 90
13x= 104
X=8
The angle measurements are 47, and 43
Answer:
10, 15, 20, 25
Step-by-step explanation:
I think this is the answer but I'm not 100% sure??