Answer: 6 years
Step-by-step explanation:
Let Maria's age be x
Jonathan is four times Maria's age. This means that Jonathan age = 4x
In 3 years, he will be three times as old as Maria is then. This can be written as:
4x + 3 = 3(x + 3)
4x + 3 = 3x + 9
4x - 3x = 9 - 3
x = 6
Maria is 6 years
Answer: Option A, B, E are correct.
A. 8^x •8^x = 64^x
B. 8^2x = 64^x
C. 8•8^2x = 8^{1 + 2x}
D.8^2•8^x = 8^{2 + x}
E. (8•8)^x = 64^x
F. 8•8^x = 8^{1 + x}
Answer:
You CAN do it. triangle with the circle. find area of triangle first and subtract circle. (8*8)/2 = 32. minus circle. (2.5*pi^2) = 24.674011. so we have 32 - 24.7 (rounded) = 7.3 for triangle. as for the other? divide it into segments. we have a rectangle on bottom followed by 2 triangles on top of that rectangle. Recangle height is 2 * width. The width is 8 as we can see the top. 2*8= 16. plus the triangles. we know the triangle height is 6 minus the 2 from the rectangle height so 6-2=4 times the width which is the rectangle width minus the 6 from the middle divided by 2 because there are 2 triangles. 8-6=2/2 = 1. height * width = 4 divide by 2 = 2. that is the area of one triangle. but because there are 2 triangles multiply by 2. 2*2 = 4. 16+4=20 for the area of the second figure.
Step-by-step explanation:
Yes, because she can do 120 in four minutes and in one minute she can do 30 and 120 plus 30 is i fifty
