Answer:
In ∆ABD and ∆ACD
<BAD =<CAD ( each are half of <A )
<D=<D ( each equal to 90°)
AD = AD ( common)
So ∆ ABD is congruent to ∆ ACD.
Then AB =AC (by C.P.C.T)
Hence,∆ABC is an iso - sceles triangle.
Answer:
B
Step-by-step explanation:
For a line to be parallel it must have the same slope
6x-2y=-5
+5 +5
6x-2y+5 = 0
+2y +2y
6x+5 =2y
/2 /2
3x+5/2=y So the slope is 3 and we know it can only be either B or D
Now we need to find which line passes through (7,-2) and we find this by plugging 7 into B and D
B. -2= 21-23 TRUE
D. -2 = 21+ 23 FALSE
So the answer is B
Answer:
10
Step-by-step explanation:
because there are 20 girls and 10 boys = 30
Given :
Challenge given is to volunteer for about 1 1/2 hours per week .
Autum did at a rate of 6 3/4 hours per week .
To Find :
The comparison ( ratio ) her volunteers rate with the challenge rate .
Solution :
Simplifying challenge rate in in normal fraction , 
.
Also , simplifying her rate , 
.
Now , ratio of his work by challenge is :
Therefore , the ratio is 9/2 or 4 1/2 .
Hence , this is the required solution .
