Answer:
-3.8 is the additive inverse
Step-by-step explanation:
The additive inverse is the number you add to another number to get zero or the negative of a number...
three shapes. three areas to find. three areas to add together to find the whole area. gotcha.
Step-by-step explanation:
- smaller rectangle
- larger rectangle
- right triangle
<h2>
smaller rectangle: </h2>
length is 7 cm and width is 4 cm, so the area is <u>28 square cm</u>
<h2>
</h2><h2>
larger rectangle:</h2>
width is 4 cm and length is 10 cm, so the area is <u>40 square cm</u>
Because the weird shape's bottom length was 13 cm. There are 3 cm and 7 cm on the top length(s) of the weird shape, next to each other. Looking at the dash lines, when adding 3 cm and 7 cm together, the larger rectangle's length is 10 cm.
<h2>right triangle: </h2>
base is 3 cm and height is 8 cm, so the area is (3x8)/2 = 24/2 = <u>12 square cm</u>
With knowledge from figuring out the larger rectangle's length being 10 cm and the weird shape's bottom length being 13 cm, we know the right triangle's base is 3 cm. (13 cm - 10 cm = 3 cm for the base of the right triangle).
Due to adding 4 cm and 4 cm of weird shape's width, which is also a right triangle's height.
<h2>weird shape's area from adding three shapes' areas: </h2>
28 + 40 + 12
= 80 square cm (ANSWER)
<h2 />
Answer:
Step-by-step explanation:
We have that 
Then:
Finaly, the answer is 
Answer:
We have the relation:
aₙ = 10 + 2*(n - 1)
And we want to write this in fuction form:
y = f(n)
first we have:
aₙ = y = 10 + 2*(n - 1)
We can rewrite this as:
y = 10 + 2*n - 2
y = 2*n + (10 - 2)
y = 2*n + 8
Now we want to find the y-intercept, this is the value of the function when the variable is equal to zero.
Then if we take n = 0, we get:
y = 2*0 + 8
y = 8
The y-intercept is 8.
