Suppose that x and y are real numbers, and x^2 + y^2 = 4. Find all ordered pairs (x, y) that satisfy this equation. A) (2, 0) B) (0, 2) C) (-2, 0) D) (0, -2)
Answers
Answer:
All of them satisfy the equation.
Step-by-step explanation:
x^2 + y^2 = 4
2^2 + 0^2 = 4 True
0^2 + -2^2 = 4 True
-2^2 + 0^2 = 4 True
0^2 + -2^2 = 4 True
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Ms. Wong spent $9.20 to buy a total of 18 pens and pencils. A pen costs $0.80 and a pencil costs $0.40. How many pens did Ms. Wong buy?
Write as ratio in simplest form91%, 12%, 6%, 93%, 62%, 14%, 70%, 400%,.
Whats the square root of 1.69?
do you think making a table is the best way to find the total area of the rooms given in the example is there another problem solving strategy you think would work just as well or better describe the alternate method and why you think it works
Answers
We have then:
k = 6/4 = 3/2
Then, the area will be given by:
A '= k ^ 2 * A
Substituting values:
A '= ((3/2) ^ 2) * (20)
A '= 45 cm ^ 2
Answer:
The area of PQR is:
A '= 45 cm ^ 2
Answer:
Area of ΔPQR = 45 cm²
Step-by-step explanation:
From the given figure we can see that triangle ABC and triangle PQR are similar triangles.
If two triangles are similar the the ratio of area of two triangle is equal to the square of ratio of corresponding sides
To find the area of triangle PQR
Ar(ABC) = 20, AB = 4 cm and PQ =6 cm
From figure we can write,
Ar(ABC)/ar(PQR) = (AB/PQ)²
20/ar(PQR) = (4/6)²
20/ar(PQR) = 16/36
ar(PQR) = (36 x 20)/16 = 45 cm²
Answers
Answer:
.5 hours per mile
Step-by-step explanation:
We want hours per mile
7 hours / 14 miles
1/2 hours per mile
.5 hours per mile
Final answer:
Evan's walking rate is 0.5 hours per mile, meaning it takes him half an hour to walk one mile.
Explanation:
The question is asking for Evan's walking rate in hours per mile. To find this, you need to divide the total time taken by the total distance covered. Therefore, the walking rate would be 7 hours divided by 14 miles.
To calculate, divide 7 by 14, which equates to 0.5. So, Evan's walking rate is "0.5 hours per mile." This means it takes him half an hour to walk one mile.
Learn more about Walking Rate here:
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b.there will be only one solution
c.there will be 2 solutions but they will both be negative
d.there will be 2 solutions but they will both be positive
the
e.none of these
Answers
Answer:
e. none of these
Step-by-step explanation:
The correct answer is e. none of these because a negative discriminant means that there will be no solutions at all!
Answers
25.83/x times 52.5/100
2. Do 25.83 times 100 which equals 2,583
3. Do 2,583 divided by 52.5 which equals 49.2
4. Your answer is 49.2
Answers
Answer: The ratio of blue cars to cars that are not blue in simplest form = 7:18
Step-by-step explanation:
Given: There are 21 blue cars and 75 cars total.
Then, number of cars that are not blue = 75 -21 = 54
Now, the ratio of blue cars to cars that are not blue = [Divide numerator and denominator by 3.]
Hence, the ratio of blue cars to cars that are not blue in simplest form = 7:18
(B) this relation is not a function
Answers
Answer:
(b) this relation is not a function because this relation is a one to many ,functions are only many to one and one to one