Answer:
Step-by-step explanation:
Since x=-4 plug in the -4 into the equation to find y,
-5(-4)-4y=16
20-4y=16 -20 -20 __________
-4y=-4
-4y/-4=-4/-4
___________
y=1
So now you found both x and y so plug in both now to check if both are correct.
-5(-4)-4(1)=16
20-4=16
16=16
So both y and x are correct.
Hope this helps!:)
y = 5x - 9
y - 5x = 4
(3,2)
no solution
an infinite number of solutions
Answer:
(3, 2)
2 = 5 x 3 - 9
= 15 - 9
= 6
2 is not = 6
y = 5x - 9
y - 5x = -9
y - 5x = 4
Use elimination
-15
ANSWER: So there are no solutions
Find the value of y
Answer:
y=3/2
Step-by-step explanation:
.......................
Plz help!!!!!!!!!!!!!!!!!!!!!
Pairs of shoes are manufactured for $24. They are sold to a warehouse with a mark-up of 15%. The warehouse sells the shoes to a distributor after charging a holding fee of $10 per pair. The distributor sells them to ‘Fine Shoes’ for a percentage profit of 12%. The store then marks them up by 30%.
a. Determine the price of a pair of shoes if you buy it from one of the ‘Fine Shoes’ stores (round to the nearest 5 cents). Show working out.
Answer: $54.75
Step-by-step explanation:
The price the shoes are sold to the warehouse is:
= 24 * ( 1 + 15%)
= 24 * 1.15
= $27.60
The price the warehouse sells it is:
= 27.60 + 10
= $37.60
Price distributor sells is:
= 37.60 * 1.12
= $42.112
Fine shoes will then sell at 30% profit:
= 42.112 * 1.3
= $54.7456
= $54.75
A triangle has an area of 36 square meters. What could its base and height be?
b = 12 m, h = 6 m
b = 9 m, h = 4 m
b = 9 m, h = 9 m
b = 8 m, h = 9 m
Answer: b = 9 m, h = 4 m
Step-by-step explanation:
9x4 equals 36, but all of these other answers do not equal 36. :)
Answer:
b = 9 m, h = 4 m
Step-by-step explanation:
A coupon discounts the total grocery bill by $3.50. How many dollars g is the bill after the discount if the bill before the discount is b dollars? Write an equation to represents the situation.
Answer:
g=b-3.50
Step-by-step explanation:
i’ll mark brainliest or whatever
Answer:
i think its 75 because 90 should equal x+15 so 90-15=75
The equation of a line is y= -3x - 18. What are the coordinates of the point on the
line when the value of yis 3?
Answer:
-7
Step-by-step explanation:
3=-3x-18
3x=-18-3
3x=-21
x=-7
Work out the size of obtuse angle DOF, giving a reason for your answer.
Answer:
104
This is because angle at the center is twice the angle at the circumference
Step-by-step explanation:
104 is the size of obtuse angle DOF because the angle at the center is twice the angle at the circumference.
What is an obtuse angle?An obtuse angle is any angle greater than 90 °: Straight angle is a measurement angle equal to 180 °: Zero angles is a measurement angle equal to 0 °: Complementary angle is the angle at which the sum of the measurements is 90 °: Complementary angles are the following angles: The total dimensions are 180 °.
Now we know that angles below 180 degrees and above 90 degrees are obtuse. Examples of bluntness include 110 °, 135 °, 150 °, 179 °, 91 °. Therefore, all angles in the range of 90 ° to 180 ° are obtuse.
Learn more about the circumference. here: https://brainly.com/question/14283575
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Find the vertex of the parabola y = 2x2 + 10x + 8
Answer:
The vertex is -5/2 and -9/2
Step-by-step explanation:
I looked it up on math
way
A parabola is a mirror-symmetrical planar curve that is nearly U-shaped. The vertex of the parabola y = 2x² + 10x + 8 is (-2.5, -4.5).
What is a quadratic equation?A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers. It is written in the form of ax²+bx+c.
Then its roots are given as:
[tex]x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]
A parabola is a mirror-symmetrical planar curve that is nearly U-shaped.
y = a(x-h)² + k
where,
(h, k) are the coordinates of the vertex of the parabola in the form (x, y);
a defines how narrower the parabola is, and the "-" or "+" that the parabola will open up or down.
The general form of a parabola is written in the form ax²+bx+c, which is a quadratic equation. While the vertex form of the parabola is written as y=a(x-h)² + k.
Given that the equation of the parabola is y = 2x² + 10x + 8. Now if we compare the general equation of the parabola with ax²+bx+c, the value of a, b, and c will be 2, 10, and 8, respectively.
Further, the vertex of the parabola can be written as,
h =−b/2a
h = -10 / 2(2)
h = -10/4
h = -2.5
k = -(b² - 4ac) / 4a
k = -[10² - 4(2)(8)] / 4(2)
k = (100 - 64) / 8
k = -36/8
k = -4.5
Hence, the vertex of the parabola y = 2x² + 10x + 8 is (-2.5, -4.5).
Learn more about Quadratic Equations:
https://brainly.com/question/2263981
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factor 9x-12xy plss help thx
need help please somebodt
Please guy help me I will mark you as brainliest if you give me a good answer !!
You are selling candy bars for
$2.50 each. The cost of those
candy bars was $1.25 plus a setup
fee of $200 for manufacturing.
1) what is the profit from selling 220 candy bars?
Answer: 75 dollars
Step-by-step explanation:
220 times 2.5 is 550 which means you make 550 dollars. However, it cost 4575 dollars to make the candy bars because 220 times 1.25 is 275 and 275+200 is 475. You have to subtract 475 from 550 to get your answer which is 75 dollars.
Answer:
$75
Step-by-step explanation:
multiply total bars by cost 275+ 200=475
multiply total bars by sale price =550
can u pls help me i need help
Answer:
cbbbbb
Step-by-step explanation:
Need help with questions 3
Answer:
Step-by-step explanation:
B
Answer:
1. I cant see 2. 32 3.60
Step-by-step explanation:
how many grams are in 4.0 moles of H2O
Answer:
There are 72.06 grams in 4 moles of H2O. I hope this helps!
1. observe the following tables and find if x and y are directly proportional:
Give answer plzz
yes here x and y are directly proportional when looking at the x-coordinate
Step-by-step explanation:
here,
x1=7, y1=14
x/y=7/14
=1/2.
when considering the second coordinates,
X2=9/18=we will get the answer again
1/2.
all the coordinates is proportional in this form it is all will get the answer one by two so this x -axis and y-axis are directly proportional
Do not really speak Spanish need help
7) 4r^2- 12r + 5=0 in quadratic form
Answer:
(2r-1)(2r-5)
Step-by-step explanation:
4r^2-10r-2r+5=0
2r(2r-5)-(2r-5)
(2r-1)(2r-5)
What is the value of x
A 19
B 22
C 67
D71
Answer:
Step-by-step explanation:
(2x+4)° + 42° = 180°
x = 67°
Name the angle pair relationship for the pair of angles in the picture.
Answer:
Supplementary
Step-by-step explanation:
These angles are on the same line, they add up to 180
Which ones are true?
Answer:
The last three answers.
Step-by-step explanation:
Keisha is saving money to buy a game. So far she has saved $24, which is three-fourths of the total cost of the game. How much does the game cost?
HELPPPPP
Answer:
32 dollars is the cost of the total game
Step-by-step explanation:
24 divided by 3 is 8
8 times 4 is 32
What’s the area of this parallelogram
Answer:
360%
if not u question isnt correct
hope this might help you
Answer: Multiply the base by the height
for example A=B x H
Step-by-step explanation:
a sequence of numbers is 8, 15, 22, 29. explain why 96 will not be a term in this sequence?
Answer:
It want touch/Connect Either way the closest it can get was 99
8, 15, 22, 29, 36, 43, 50, 57, 64, 71, 78, 85, 92, 99.
Enter the correct answer in the box.
The formula for centripetal acceleration, a, is given by this formula, where v is the velocity of the object and r is the object’s distance from the center of the circular path:
a=v^2/r
.
Solve the formula for r.
Answer:
Step-by-step explanation:
For this case we have the following equation:
a = v ^ 2 / r
From here, we must clear the value of speed.
We have then:
v ^ 2 = a * r
v = root (a * r)
Answer:
the formula for the velocity is:
v = root (a * r)
What is the lowest common denominator of the following two fractions?
3/4 and 1/5
Answer:
20
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
What is the equation of a line that goes THROUGH (-2, 3) and is PERPENDICULAR to the line
y = -3x+2
6 3/7 as a improper fraction
Answer:
45/7
Step-by-step explanation:
6 × 7 = 42 + 3 = 45
45/7
good luck i hope this helps :)
Answer: 45/7
Step-by-step explanation:
Multiply the denominator by the whole number
7*6
Add the answer from Step 1 to the numerator
42+3=45
Write answer from Step 2 over the denominator
45/7
In decimal form:
6.42
WRITE AN EXPRESSION WITH ATLEAST FIVE TERMS THAT SIMPLIFIES TO 9X+25
Answer: 19 + 11x - 7 - 2x + 13
Step-by-step explanation:
19 + 11x - 7 - 2x + 13
Bring like terms together
11x - 2x + 19 - 7 + 13
9x + 12 + 13
9x + 25
