-5x + 4y = -13
A. (0, -1)
B. (8,0)
C. (1, -7/8)
D. (2, -3/4)
Answer:
D. (2, -3/4)
Step-by-step explanation:
Using the substitution method:
-5x+4(1/8x-1)=-13
-5x+0.5x-4=-13
-4.5x/4.5=-9/4.5
-x=-2
x=2
You are supposed to replace 2 in the first equation now but as there is no other option with x value of 2 D is the answer.
If continued:
-5(2)+4y=-13
-10+4y=-13
4y=-3
y=-3/4
The number, 6.5892 , given that it ends, which fits the definition, is therefore a rational number.
A rational number is a number that can be expressed as a fraction of two integers, where the denominator is not 0. 6.5892 can be expressed as the fraction 65892/10000, which is a simplified fraction with an integer numerator and denominator.
An irrational number is a number that cannot be expressed as a fraction of two integers. Examples of irrational numbers include pi (π) and the square root of 2.
A simple reminder, Rational numbers can be written as fractions. Irrational numbers cannot be written as fractions.
Find out more on rational numbers at brainly.com/question/19079438
#SPJ3
Answer:
5r^2+2
Step-by-step explanation:
(4r^2 – 3r + 2) – (-r^2 – 3r) =
Distribute the minus sign
(4r^2 – 3r + 2) +r^2 + 3r =
Combine like terms
(4r^2 + r^2 – 3r+ 3r + 2) =
5r^2+2
Part B: Write the equation obtained in Part A using function notation.
Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals.
B. 56° and 56°
C. 28° and 90°
D. 56° and 62°
Answer: the answer is B
Step-by-step explanation:
Answer:
56 and 62
Step-by-step explanation:
Find the measure of Z2.
Z2 = [?]°
Answer:
40 = <2
Step-by-step explanation:
<1 and <2 are corresponding angles and corresponding angles are equal when the lines are parallel
<1 = <2
40 = <2