Answer:
The answer to your question is: 21
Step-by-step explanation:
Data
AB = BC = CD
BQ = 21
QD = ?
PC = 11
Process
Here there are 2 triangles
ΔQCB and ΔQCD
These triangles share one side QC
And one side measures the same BC = CD
And the ∠ BCQ = ∠ DCQ
Then these triangles are congruents SAS
if QB = 21 then QD = 21
The answer is 2 in 20 or 1 in 10, all you have to do is add up the total number of marbles and then have the number of yellow in the total. So 2 in 20. Hope this helps you!
Answer:
Step-by-step explanation:
#22
<h3>Given </h3>
- Equation x² -4x + 1 = k(x - 4) with equal roots
<h3>To find</h3>
<h3>Solution</h3>
<u>The equation in standard form is:</u>
- x² -4x + 1 = k(x - 4)
- x² - 4x - kx + 1 + 4 = 0
- x² - (k + 4)x + 5 = 0
<u>When the quadratic equation has equal roots its discriminant is zero</u>
- D = 0
- b² - 4ac = 0
- (k + 4)² - 4*5 = 0
- (k + 4)² = 20
- k + 4 = ± √20
- k = - 4 ± √20
- or
- k = -4 ± 2√5
Answer:
Step-by-step explanation:
33.414−33.36
=33.414−33.36
=33.414+−33.36
=0.054
