Answer:
Step-by-step explanation:
1) When you're finding ratios, the best thing to do is to add the parts together to find what one part is.
2+4= 6. Then divide this by the total- 18/6=3.
Therefore, the ratio of red to brown chairs is 2*3:4*3
Therefore, the amount of red chairs is 12.
2) The best thing to do i to find out how long it takes him to read one book them multiply this by 15.
To do this, simply divide the amount of time by the amount of books that he has read.
30/10= 3
Therefore, Rock can read a book in three minutes. As he is reading 15, you multiply these together.
3*15= 45
Therefore, it will take Rock 45 minutes to read 15 books.
3) The best thing to do is to find out what one pastry costs, and you can do this by dividing the cost by the amount of pastries.
160/8= 20.
Therefore, one pastry costs $20.
As you want to find the cost of 16 pastries, you simply times these together.
20*16= 320
Therefore, 16 pastries cost $320.
Hope this helps :)
Product = multiplication
product of four and a number = 4n
plus six = + 6
'is' indicates an equal sign
So we have:
4n + 6 = 18
or B
Answer:
d) Use the angle bisectors to find the center of the circle.
Step-by-step explanation:
Given that for a triangle a circle inscribed in a triangle is to be drawn.
For a incircle we must have the centre of the circle equidistant from the sides.
Then only the circle will touch all the three sides.
To get a point equidistant from all the three sides we must choose a point which lie on the three angle bisectors of the triangle.
Since angle bisectors are concurrent in a triangle, we can draw any two angle bisectors.
Option d is right
Answer:
x= -6
Step-by-step explanation:
2(+9)=4(+7)+2
2+18=4(+7)+2
2+18=4(+7)+2
2+18=4+28+2
2+18=4+28+2
2+18=4+30
Subtract
18 from both sides of the equation
Simplify
Subtract
4
4x4x
from both sides of the equation
Simplify
Divide both sides of the equation by the same term
Simplify
