Sometimes the easiest thing to do is test the hypotheses.
In order for A to be correct, when we plug 1 in for t, we should get 8.
2.5^(1-1) = 2.5 ^ 0 = 1, so yes. In year one, the coin is valued at $8.
We have our answer, but for kicks let's do the rest.
For B, if we pick the year 2, the value should then be 16.
2.5 ^ (2-1) = 2.5 ^ 1 = 2.5. 8*2.5 = 20.
For C, there is no reason to infer number of coins. It has nothing to do with the question being answered.
For D, we look at the answers to A and B again. Is B 8 times A?
So, the only answer which comes back correct is A.
Answer:
Step-by-step explanation:
What we need to do is figure out the answer to, "1/2 of 1/8 is how many?" 2/4 reduces to 1/2. If 1/8 of the flowers are tulips, and 1/2 the tulips are red, then 1/2 * 1/8 is the number of red tulips, which is 1/16.
Answer:
The answer is rotation 270° about the origin
Step-by-step explanation:
If (x , y) is a point in xy-coordinates
If the point rotate about the origin ⇒ (The positive direction is anti-clockwise)
1- 90°
Its image is (-y , x)
2- 180°
Its image is (-x , -y)
3- 270°
Its image is (y , -x)
If we assume A is (1 , 7)
1- ⇒ (-7 , 1) ⇒ rotation 90° about the origin
2- ⇒ (-1 , -7) ⇒ rotation 180° about the origin
3- ⇒ (7 , -1) ⇒ rotation 270° about the origin
∵ x-coordinate of point A small and +ve and y-coordinate large and +ve
∵ x-coordinate of point A' large and +ve and y-coordinate small and -ve
∴ The answer is rotation 270° about the origin
∴ The answer is rotation 270° about the origin
Answer:
539
Step-by-step explanation:
Answer and Step-by-step explanation:
First work out the area of the semi circle so, To do this we find the area a circle and half it.
<em><u>We know that:</u></em>
→ The radius of the semi circle is 4.
→ To find the area of a circle is it radius² x π
→ Therefore the area of the semi circle is 4 ² x π
→ Then divide this by 2.
→ Then you should get 16 π which equals 50.26548246 cm ².
Now, to find the area of the triangle:
→ The area of a triangle is base x height divided by 2.
→ Therefore you should get 9 x 8 divided by 2 which you should get to 36 cm ².
→ Then add the two together to get:
86. 26548246.
→ Then round to the newest hundredth to get to the final answer of : <u>86.27cm².</u>