Will give brainliest and 5 starsPLEASE HELP
Determine whether the lines AB and CD would be parallel, perpendicular, or neither?
A(-5,3) and B(-5, 7)
What is the slope of AB?
C(1, 9) and D(-10, 9)
What is the slope of CD?
What are the lines? (parallel, perpendicular or neither)
Answers
Answer:
The slope of AB is undefined; the slope of CD is 0; The lines are perpendicular.
Step-by-step explanation:
Line AB would form a vertical line. Slope is Δy/Δx. To go from 3 to 7 (the y-coordinates) you need to go up 4 units. So we would then have Δy/Δx = 4/Δx. To go from -5 to -5 (the x-coordinates) we have to go left or right 0 units. So, Δy/Δx = 4/Δx = 4/0. Anything divided by 0 is undefined. Remember: vertical lines always have an undefined slope.
Line CD would form a horizontal line. To go from 9 to 9 (the y-coordinates) you need to go up or down 0 units. So, Δy/Δx = 0/Δx. To go from 1 to -10 (the x-coordinates) you need to go down 11 units. So Δy/Δx = 0/Δx = 0/1. 0 divided by anything is 0. Remember: horizontal lines always have a slope of 0.
If you picture a horizontal line and a vertical line intersecting, they would both form a right angle when they intersect. By definition, this would make both lines perpendicular.
Related Questions
Nevaeh has $560 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax.
She buys a new bicycle for $383.32.
She buys 4 bicycle reflectors for $9.09 each and a pair of bike gloves for $21.07.
She plans to spend some or all of the money she has left to buy new biking outfits for $39.75 each.
Write and solve an inequality which can be used to determine
x
x, the number of outfits Nevaeh can purchase while staying within her budget.
Answers
Answer:
22/3
Step-by-step explanation:
because it is
This recipe makes five portions of soup.
Navina follows this recipe but only wants to make enough for one portion of soup.
How much of each ingredient does she need?
Recipe: Serves 5
120 g onions
60 g carrots
2.5 tablespoons of oil
460 g tomatoes
1 L vegetable stock
Answers
Answer:
20g onions at 50 carrotsat 2tablespoon oil at 30 tomatos 1l vegtable stock
When does an equation involving rational expressions have straneous root
Answers
Answer:
Many mathematical operations are reversible, meaning you can go not just from A to B, but by the same reason go from B back to A.
Example x + 4 = 7. Subtract 4 from each side to get x = 7 - 4 = 3. But you could, if you wished, go from x = 3 to x + 4 = 7 by simply doing the opposite, adding 4.
Now consider an operation that is NOT reversible.
Example: Given sqrt(x) = x - 2. Square each side to get x = (x - 2)^2 =x^2 - 4x + 4, or
x^2 - 5x + 4 = 0. Factoring gives (x - 1) (x - 4) = 0. So, IF the original equation holds for a real number x, then the only possibilities are x = 1, x = 4.
If you plug x = 4 back into original equation, you get sqrt(4) = 4 - 2, which is true. But, if you plug in x = 1, you get sqrt(1) = 1 - 2, which is NOT true, as sqrt(1) = 1, not -1. The logic of the derivation was that, IF original equation were true, then x could possibly be only 1 and/or 4. In effect, it was really telling you what x is NOT, namely any number besides 1 and 4. Once you test the two “candidates” you see that one works and the other doesn’t.
Why does this happen? It has to do with the fact that square root is only a principal branch. Just as sqrt(16) is only 4 and not -4, so we are dealing with a limited possibility with which to start. Squaring glosses over this, and when you solve a quadratic equation, it generally gives two solutions (not nec. real). Because sqrt(x) started out to be nonnegative, that created the problem at end.
Use the remainder theorem to determine if x=6 is a zero of the following polynomial, and find the quotient and the remainder.
p(x)=x^4+4x^3-66x^2+45x-54
A. No, x=6 is not a zero of the polynomial.
The quotient is x^3-2x^2-54x+369, and the remainder is -2,268.
B. Yes, x=6 is a zero of the polynomial.
The quotient is x^3-2x^2-54x+369, and the remainder is 0.
C. Yes, x=6 is a zero of the polynomial.
The quotient is x^3+10x^2-6x+9, and the remainder is 0.
D. No, x=6 is not a zero of the polynomial.
The quotient is x^3+10x^2-6x+9, and the remainder is 0.
Answers
Mary spent three fourths of her allowance at the mall. One half of that was spent on snacks. If Mary’s allowance was thirty dollars, how much did she spend on snacks?
Answers
Answer:
$11.25
Step-by-step explanation:
Divide 30 by 4
30/4=7.50
multiply by 3
7.5*3=22.50
22.50 is 3/4 of her allowance
divide that by half to get how much she spent on snacks.
22.50/2=11.25
Hope this helps!
Need some help and fast
Answers
Answer:
highest 7/8, 0.5, -1/4, -1 1/5 lowest
Answer: i'm not certain but i think its -1 1/5 first then -1/4 next is 0.5 then 7/8
once again not certain but i think that's the answer
Determine which of the following equations define a function. For those that do not,
state the reason for your answer.
x +3=0
Answers
A vertical line has undefined slope because all points the line have the same x-coordinate.
A function is a relation in which no two ordered pairs have the same first component (x-values or input) and different second components (y-values or output).
Remember that a function can only take on one output for each input. Since a vertical line has the same x-coordinates for all values of y-coordinates, then it means that it is not a function.
Please mark my answers as the Brainliest if you find this explanation helpful :)
Find the slope of the line that passes through the points -2,-2 and -10,-9
Answers
Answer:
7/8
Step-by-step explanation:
the equation for finding a slope is (y2 - y1) / (x2 - x1)
basically it's the second y minus the first y all divided by the second x minus the first x
-9 - (-2) / -10 - (-2)
-7 / -8
7/8
0.9/0.5 = a/10 Plz help
Answers
Answer:
18
Step-by-step explanation:
10/0.5 = 20
20 * 0.9 = 18
Answer:
a = 18
Step-by-step explanation:
Step 1: Cross-multiply.
[tex]0.5 * a = 10*0.9[/tex] [tex]0.5a =9[/tex]Step 2: Divide both sides by 0.5
[tex]\frac{0.5a}{0.5} =\frac{9}{0.5}[/tex] [tex]a = \frac{90}{5}[/tex] [tex]a = 18[/tex]Step 3: Check if solution is correct.
[tex]\frac{0.9}{0.5}=\frac{18}{10}[/tex] [tex]\frac{9}{5} =\frac{18}{10}[/tex] [tex]\frac{18/2}{10/2} =\frac{9}{5}[/tex][tex]\frac{9}{5} =\frac{9}{5}[/tex]Therefore, a = 18.
What are the dimensions of A = [ 6 4 1 ]
5 -7 2
Answers
Explanation:
We have 2 rows and 3 columns, which directly leads to the answer 2 x 3
Always list the number of rows first, followed by the number of columns.
Answer:
Its 3x2
I swear I just took the test
Step-by-step explanation:
The process by which information is encoded, stored, and later retrieved is called
a. intellect b. cognition c. memory d. perception
Answers
Answer:
Memory is the process(cognitive) in which information is encoded,stored and retrieved.
Please help! (will mark as brainliest)
Answers
Using the numbers -5, 9, -2, 11, and -4, and the operations add and subtract, what is the largest possible answer you can make?
Answers
11+9=20-5-2-4=9
The largest possible value we can make using subtraction and addition from the given numbers -5, 9, -2, 11, and -4 is 31.
What are subtraction and addition?A mathematical operation that represents combining objects into a larger collection is called addition.
It is denoted by the plus sign (+).
A mathematical operation that represents the process of finding the difference between numbers is called subtraction.
It is denoted by the minus sign (-).
We have,
-5, 9, -2, 11, and -4
The largest possible value we can get is by using sign multiplication.
[ Negative x Negative = Positive ]
We will use addition and subtraction wherever necessary to make all the numbers positive.
= 9 - ( -5 ) - ( -2 ) + 11 - ( -4 )
= 9 + 5 + 2 + 11 + 4
= 31
Thus the largest possible value we can make using subtraction and addition from the given numbers is 31.
Learn more about additions and subtractions here:
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the diagram shows a tile in the shape of a trapizium.
work out the area of the tile.
12,12,26
Answers
Step-by-step explanation:
(a+b)×h
_______
2
= (12 + 12 ) × 26
= (24) × 26
= 624 ÷2
= 312
Ashley and Keely shared some Hershey Kisses in the ratio of 5:2. If Keely had 12 Hershey Kisses, how many did Ashley have?
Answers
Answer:
Ashely had 30 kisses! Muah!
Step-by-step explanation:
Ratio of Ashely to Keely is 5 : 2 and we know Keely had 12. Keely represents the 2 in this ratio, and how do we get from 2 to 12? We multiply by 6. We have to multiply by 6 on the other side too then. 5 times 6 is 30, so Ashely had 30 hershey kisses.
In real life, not in ratio form, Ashely had 30 kisses and Keely had 12.
Please mark brainliest if possible, have a nice day! :)
So I need help with this
Answers
Answer:
-5/14
Step-by-step explanation:
2/7 times 2 to get the denominator to be 14 since adding and subtracting fractions require the same denominator. 2/7 times 2 = 4/14. -9/14+4/14=-5/14.
make them the same denominator
[tex] \frac{2}{7} \times \frac{2}{2} = \frac{4}{14} [/tex]
[tex] \frac{ - 9}{14} + \frac{4}{14} = \frac{ - 5}{14} [/tex]
I need help please.
Answers
9514 1404 393
Answer:
a) 191 yards
b) 40 yards
c) 1.5 minutes
Step-by-step explanation:
Given:
ΔPQR is a right triangle with the right angle at Q
PQ = 40 yards; QR = 70 yards
M is the midpoint of PR
jogging rate is 150 yd/min
Find:
a) the perimeter of ΔPQR to the nearest yard
b) QM to the nearest yard
c) the time to jog the path PQMRQP to the nearest tenth minute
Solution:
a) The length of PR can be found from the Pythagorean theorem:
PR² = PQ² +QR²
PR² = 40² +70² = 6500
PR = √6500 ≈ 80.62 . . . . yards
Then the perimeter is ...
perimeter = PQ +QR +PR = 40 +70 +80.62 ≈ 191 yards
__
b) Segment QM divides triangle PQR into two isosceles triangles: PMQ and RMQ. The lengths MP, MQ, and MR are all equal to half the length of PR.
QM = PR/2 = (80.62 yd)/2 = 40.31 yd
QM ≈ 40 yd
__
c) The segments of path PQMRQP can be grouped to simplify the computation of the path length
PQMRQP = PQ +QM +MR +RQ +QP = PQ +(PQ +QR +(QM +MR))
Since QM +MR = PR, the length in the outer parentheses is the perimeter of the triangle. Then the jogger's total path length is ...
PQ + perimeter(ΔPQR) = 40 yd +191 yd = 231 yd
The time it takes to jog that path is ...
time = distance/speed
time = 231 yd/(150 yd/min) = 1.54 min ≈ 1.5 min
It takes about 1.5 minutes.
mrs. williams is deciding between two field trips for her class. The science center charges $225 plus $6 per student. The dino discoverry museum simply charges $11 per student. For how many students will the science center charge less than the dino discovery museum?
Answers
Answer:
Step-by-step explanation:
let x = number of students
Science Center will charge total of 135 + 3x
Dino Discovery Museum will charge total of 6x
for what x the Science Center charge less than the Dino Discovery museum that is
135 + 3x < 6x
135 < 6x - 3x
3x > 135
x > 135/3
x > 45
The Science Center charge less than the Dino Discovery museum for more then 45 students.
45students will the science center charge less than the dino discovery museum
What is Algebra?
One of the many branches of mathematics is algebra. Algebra, which is a common thread throughout practically all of mathematics, is broadly defined as the study of mathematical symbols and the rules for manipulating these symbols in formulas.
Suppose x is the number of Students
Total fees for Science Center will be,
135+3x.
Total fees for the Dino Discovery Museum will be 6x.
The Science Center charges a lower price than the Dino Discovery Museum for what x.
135 + 3x < 6x
135 < 6x - 3x
3x > 135
x > 135/3
x > 45
Hence, For classes with more than 45 Students, the Science Center charges less than the Dino Discovery Museum.
To learn more about Algebra click on the link
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The graph of a linear function has a slope of 5 and passes through the point (2,5). What
is the y-intercept of the graph of the function?
Answers
Answer:
-5 is the y intercept.
Step-by-step explanation:
Ok, lets do the steps in order.
1) Make a point-slope form equation.
We know that the format of it is y - y1 = slope(x - x1), so we know have to substitute our information in the equation.
y - 5 = 5(x - 2)
2) Convert our point-slope form equation into slope intercept form, and solve for the y-intercept.
y = slope(x) + b... right? So we now have to do math.
Distribute the right side of the equation to get :
y - 5 = 5x - 10
Now cancel out the -5, and then subtract on both sides.
y = 5x - 5
And -5 is your y intercept :)
Hope this helps! Mark me brainliest :)
a teacher writes on the borad 3 to 10 which scenario could model this radio
Answers
Answer:
D
Step-by-step explanation:
Since the ratio is 3 to 10 it would have to be 3 prizes for every 10 contestants
What is the point slope form for (-8,3) and m=5
Answers
Hello There!
y-y1=m(x-x1)
y-3=5(x+8)
y-3=5x+40
[tex]y=5x+43[/tex]
Hope this helps!
[tex]GraceRosalia[/tex]
Please help with this ASAP
Answers
Answer:
[tex]\frac{2}{5}[/tex] and [tex]\frac{2}{7}[/tex]
Step-by-step explanation:
We want to work backwards. Currently we have [tex]\frac{ }{ }[/tex][tex]\frac{?}{?}[/tex] ÷ 5 = [tex]\frac{2}{25}[/tex].
If we multiply both sides by 5, we get [tex]\frac{?}{?}[/tex] = [tex]\frac{2}{25}[/tex] × [tex]\frac{5}{1}[/tex].
We can use multiplication of fractions to solve this. To multiply fractions we multiply the two numerators together and multiply the two denominators together, giving an answer of [tex]\frac{?}{?}[/tex] = [tex]\frac{10}{25}[/tex].
This can be simplified to [tex]\frac{2}{5}[/tex].
We can use the same method on the other equation to get an answer of [tex]\frac{2}{7}[/tex].
**This content involves multiplying fractions and questions with the blanks not isolated, which you may wish to practice.
Janet can shovel snow from her driveway in 30 minutes. Tom can do the same job in 40 minutes. How long would it take
Janet and Tom to shovel the driveway if they worked together?
Answers
Answer: over 23 mins a little bit 23.157
Step-by-step explanation:
Smart
what is 6 7/16 as an imporoper fraction
Answers
Answer:
answer is
frghhfgyyuu67.5
Each bag of cookies contains x cookies. At the start, Jude has 16 bags of cookies and 5 extra cookies. Elias has 8 bags of cookies and 4 extra cookies. If Elias doubles the number of cookies he has, how many more cookies will he have than Jude?
Answers
Answer:
3
Step-by-step explanation:
J = 16 bags + 5
E= 8 bags +4
If E doubles his cookies, he has 16 bags and 8 extra cookies.
They both have the same amount of bags. 8-5= 3 extra
Suppose line g is the line with equation y=x. Given A(9,-5), B(6,3), and C(-1,-6), what are the coordinates of the vertices of A'B'C' for the reflection?
(type an ordered pair)
A'=___
B'=___
C'=___
Answers
Answers:
A ' = (-5, 9)
B ' = (3, 6)
C ' = (-6, -1)
=====================================================
Explanation:
When reflecting over the line y = x, we swap the locations of the x and y coordinates. For example, the point (5,7) becomes (7,5)
This means we have the following reflections
A(9,-5) moves to A ' (-5, 9)B(6,3) moves to B ' (3, 6)C(-1,-6) moves to C ' (-6, -1)This operation is commonly done when determining the inverse of a graph. This is because the inverse basically undoes everything the original function applies. So this "backwards" nature of things means that x becomes y and vice versa.
____× 3 × 4= 24 __=___
Answers
Answer:
2×3×4=24
Step-by-step explanation:
2×3=6----> 6×4=24
How can I help you with the last two blanks after the 24?
Answer:
2 x 3 x 4 = 24
24 = 24 True
Step-by-step explanation:
I used a calculator :)
plz help, look at the screenshot
Answers
Answer:
1. D
2. E
3. C
Step-by-step explanation:
f(x)=(5x³-x²-3x+9)+(3x²-x-7)-(3x³+x²-4)
f(x)=(5x³-x²-3x+9)+(3x²-x-7)+(-3x³-x²+4)
f(x)=(2x³-x²-3x+9)+(2x²-x-3)
f(x)=2x³+x²-4x+6
1. D (the degree is the largest value of an exponent)
2. E (the constant term is the number without a variable)
3. C (the leading coefficient is the coefficient of the largest variable exponent in the value)
given that (x-3)(Ax²+bx+c)=x³-7x-6,find the value of A,B and C
Answers
Answer:
Given that (x-3) (Ax²+bx+c) = x³-7x-6, find the value of A, B and C
Given that (x-3) (Ax²+bx+c) = x³-7x-6, find the value of A, B and C
evaluate h(x)=12-5.2x when x = -4,0, and 3.5
Answers
Answer:
h(-4) = 32.8
h(0) = 12
h(3.5) = -6.2
Step-by-step explanation: