Answer:
Step-by-step explanation:
The ratio of corresponding sides DN and KI is 12 : 4 = 3 : 1. The same ratio applies to altitudes DQ and KO. Since the difference between these altitudes is 6 and the difference between their ratio units is 3-1 = 2, each ratio unit must stand for 6/2 = 3 units of linear measure. That is, ...
DQ = (3 units)·3 = 9 units
KO = (3 units)·1 = 3 units
Then the base lengths QN and OI can be found from the Pythagorean theorem:
KI² = KO² +OI²
4² = 3² +OI²
OI = √(16 -9)
OI = √7
QN = 3·OI = 3√7
Answer: 40
Step-by-step explanation:
3x-10=x+70
3x-x=70+10
2x=80
x=8<u>0</u>
2
x=40
Someone is answering the question.
Answer:
<6 = 50 percent
Step-by-step explanation:
<2 = <5 = <7 = <9 = 130 percent
<1 + <2 = <6 + <7 = 180 percent
180 percent - <7
180 percent - 130 percent = 50 percent
<6 = 50 percent
Answer:
a = 1/2
Step-by-step explanation:
The given equation is :
2y=ax-7 ...(1)
The point (2,-3) lies on the graph of this equation.
We need to find the value of a.
Put x = 2 and y = -3 in equation (1)
2(-3) = a(2) -7
-6 = 2a-7
-6+7 = 2a
2a = 1
a = 1/2
Hence, the value of a is 1/2.
