Answer:
14 years old
Step-by-step explanation:
Assume Ray's sister's age is x.
Ray's age is (x/2)+3, i.e (x+6)/2
If Ray is 10yrs old,then
(X+6)/2 = 10,
x+6 = 20
x = 14
Therefore,Ray's siSter's /e is 14years
Well this is an equilateral triangle so then a=b. so then b=4 as well. so then now you have a^2 + b^2=c^2.
4^2+4^2=c^2
16+16=c^2
32=c^2
Find the square root of 32 which is approximately 5.65685.
Find the square root of c^2 which is c.
so then 5.65685=c
Answer:
Tq for giving me free
Step-by-step explanation:
please mark me as brainlest
Answer:
Last month the grocery store sold 578.88 gallons of ice cream and 632.8 pounds of broccoli.
Step-by-step explanation:
Since a grocery store manager notices that this month her store sold a total of 521 gallons of ice cream, which represents a decrease of 10% from last month, and on the other hand, her store sold 791 pounds of broccoli this month, which It represents an increase of 25% from last month, to determine how much ice cream and broccoli did the store sell last month, the following calculation must be performed:
Ice cream = 100 - 10 = 90
90 = 521
100 = X
100 x 521/90 = X
52,100 / 90 = X
578.88 = X
Broccoli = 100 + 25 = 125
125 = 791
100 = X
100 x 791/125 = X
79,100 / 125 = X
632.8 = X
Therefore, last month the grocery store sold 578.88 gallons of ice cream and 632.8 pounds of broccoli.
You essentially have four triangles. The area of a triangle is: A=bh/2 (b=base length and h=height)
So the area is simply the sum of the four triangle areas...
A=(3*2)/2+(3*2)/2+(7*2)/2+(7*2)/2
A=20 ft^2
