There are two of them:
1). (n * a) means n + n + n + n + n + n + n + . . . 'a' times.
2). (n * a) also means a + a + a + a + a + a + a + a + . . . 'n' times.
She can draw a triangle and then write the lenghts of the triangles with the same numbers
Answer:
1/2b * h
or b * h : 2
Step-by-step explanation:
in the right triangle h is a side, watch the picture.
<h3><u>The value of x is equal to -4.076</u></h3><h3><u>The value of y is equal to 5.057</u></h3>
3x + 4y = 8
7x - 8y = -69
<em><u>To make this easier, we can multiply each term in the first equation by 2.</u></em>
6x + 8y = 16
Now, we can use elimination to isolate one variable.
<em><u>Combine equations.</u></em>
13x = -53
<em><u>Divide both sides by 13.</u></em>
x = -4.076
We can plug this value of x into the equation to find the value of y.
3(-4.076) + 4y = 8
-12.228 + 4y = 8
<em><u>Add 12.228 to both sides.</u></em>
<em><u>4y = 20.228</u></em>
Divide both sides by 4.
y = 5.057