Answer:
25
Step-by-step explanation:
10 + (b - a) · 5
10 + (7 - 4) · 5
10 + 3 · 5
10 + 15 = 25
The second option shows AA symmetry.
The angles of a triangle have to add up to 180. When adding the given angles, you will find that the missing angle is equal to what is given in the other triangle.
An example is how in the second option’s triangle, the two given number add up to 91. 89 is needed to make it equal 180 and 89 is in the same position is the first triangle.
Answer:
Step-by-step explanation:
The proportion that Alan solved was
x/200 = 8/25
His working as shown was
(8)(x) = (25) (200)
8x = 5000
He divided both sides of the equation by 8. It became
8x/8 = 5000/8
x = 625
The correct steps are
25x = 200 × 8 = 1600
Dividing both sides of the equation by 25, it becomes
x = 1600/25
x = 64
Alan's error were:
1) He got the wrong product when he multiplied 25 by 200.
2)He got the wrong quotient when he divided 5,000 by 8.
Answer:
I drew it in the photo.
Step-by-step explanation:
In order to show a model of 2/6 divided by 1/12, we can draw 2 rectangles. In 1 rectangle, it would be divided into 6 sections with 2 shaded sections. In the other rectangle, it would be divided into 12 sections with 1 section shaded. We can show the division in a question: How many 1/12's fit into 2/6? 4 1/12's fit into 2/6.
Answer:
x=55
Step-by-step explanation:
(2x+6)+(x+9)=3x+15
3x+15=180
3x=165
x=55