Given:
To find:
The length of QR.
Solution:
We have,
Then, (CPCTC)
Divide both sides by 4.
Similarity,
(CPCTC)
Divide both sides by 2.
Now,
Therefore, the correct option is d.
Car travels 85miles at a speed of 34mph how many minutes did the journey take?
2 answers:
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Answer:
9/14
Step-by-step explanation:
The question is not clear enough. Here is a similar question as shown in the attachment
Given the expression
-3/2 ÷ -7/3
= -3/2 ×-3/7
= (-3*-3)/(2*7)
= 9/14
Hence the equivalent result expressed as a fraction is 9/14
The equation is 0.1x + 0.15(50-x)=1.20(50)
Step-by-step explanation:
Here you need 50ml of 12% alcohol solution.
You have 10% and 15% alcohol solutions.
Take volume of 10% alcohol solution to be x ml
Take volume of 15% alcohol solution to be y ml
Form equations;
x+y=50 ml--------------------------equation 1
0.1x +0.15 y= 12% of 50
0.1x+0.15y=6-----------------------equation 2
Now you have simultaneous equations, use a graph tool to solve for values of x and y as attached.
or use the mixture equation the get value of x
0.1x + 0.15(50-x)=1.20(50)
The values of x and y are ;
(x,y) (30,20) which means;
y is 20 ml of 15% alcohol
x is 30 ml of 10% alcohol
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Keywords : concentration, mixture
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Answer:
a. 0
Step-by-step explanation:
1. To find the slope given two points, use the following formula:
2. would be the second y-value (in the second ordered pair), 2, and
would be the first y-value (in the first ordered pair), also 2.
3. Same for the x-values. is -2 and
is 4
4. Now plug in the values.
5. This equals which simplifies to 0