If the point (2k− 3,k + 2) is a solution of linear equation 2x + 3y + 15 = 0, find the value of k.
Answers
Answer:
value of k = -15/7
Step-by-step explanation:
...........
k + 3 ——> y-coordinate
2x + 3y + 15 = 0
Sub (2k-3 , k+2) into the equation,
2(2k - 3) + 3(k + 2) + 15 = 0
4k - 6 + 3k + 6 + 15 = 0
4k + 3k = 0 - 15 - 6 + 6
7k = -15
k = -15/7
Related Questions
The trajectory of a golf ball hit from a tee on the ground at an angle of 40 degrees with an initial
speed of 50 meters per second can be modeled by the parabola f(x) = 0.84x - 0.0033x2, where the
x-axis is the ground. Find the height of the highest point of the trajectory and the horizontal distance
the golf ball travels before hitting the ground.
PLEASE HELP ME IM USING ALL MY
POINTS
Answers
Answer:
53.45 m254.55 mStep-by-step explanation:
Given function:
f(x) = 0.84x - 0.0033x²Rewrite in the standard form:
f(x) = - 0.0033x² + 0.84xThe maximum height is the vertex with x- coordinate -b/2a, which is:
x = -0.84/2(-0.0033) ≈ 127.27The highest point is:
f(127.27) = -0.0033(127.27)² + 0.84(127.27) ≈ 53.45 mThe horizontal distance the golf ball travels before hitting the ground:
f(x) = 0- 0.0033x² + 0.84x = 033x² - 8400x = 0x(33x - 8400) = 0x = 0- initial point33x = 8400 ⇒ x = 8400/33 ≈ 254.55 mA rope is 3/4 yard long is cut into 9 pieces. Each piece is the same length . How long is each piece?
Answers
Answer:
1/12 yard
Step-by-step explanation:
divide the total length by the amount of pieces
3/4 / 9
or multiply the bottom number by 9
4 *9 then divide by 3
36/3 = 12 and put it under 1
1/12
PLEASE SOMEONE HELP LIKE MY GRADE IS ON THE LINE...
Todd orders pictures from a photographer. Each picture cost $7.50. A one time shipping fee of $5 is added to the cost of the order. The total cost of Todd’s order before tax is $80. How many pictures did Todd order?
Answers
Answer:
80-5=75 75/7.5=10
jkvhaoek
Plzz help, its in the picture. Dont do the file stuff.
Answers
Answer:
the second one
Step-by-step explanation:
Answer: y=10.50x+420
Step-by-step explanation:
If you take
y=10.50x+420
and you plugin 2 for 2 weeks of work, you will get the total amount that she has after 2 weeks of work
y=10.50(2)+420
y=21+420
y=441
y=10.50x+420
Pls help with my homework I need help
Answers
Answer:
32/12
Step-by-step explanation:
To calculate the tangent you need to divide the opposite side by the adjacent side: 70/24=35/12
Answer:
tan G = 2.9167
Step-by-step explanation:
tan G = 70/24
tan G = 2.9167
If Angel N = angel L, find the perimeter of AMLN.
A. 26
B. 28
C. 37
D. 41
Answers
Answer:
b would be the correct answer
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Can somebody explain to me what algebra is
Answers
Hopefully this helps!
If Jim paints a house in 5 hours and john paints a house in 3 hours. How long does it take them to paint it together
Answers
Answer:
I'll take 8 hours to paint the house
Step-by-step explanation
If you take 5 add it by 3, since the question represents puting the total of how many hours are in together. So i'll take 8 hours to paint the house.
will mark right answer brianlyist
Answers
Answer:
x = 26°
Step-by-step explanation:
for these triangles to be congruent m∡B must equal m∡E
m∡B = 180 - (114+23) = 43°
to find 'x': x + 17 = 43
x = 43 - 17 = 26
There are 5 green marbles, 4 red marbles, 3 blue marbles and 3 yellow marbles in a bag. Bryan select's a marble at random. Determine the probability that two green marbles are chosen. And here are your answer choice you have A.2/21, B.4/45, C.2/15, D.1/3
Answers
Answer:
1/3
Step-by-step explanation:
(5 + 4 + 3 + 3) x 2 = 30
Multiplied by two because two marbles are being picked.
10/30 = 1/3
plzzz help
calculate b and a
Answers
Answer:
b=61
a=14
Step-by-step explanation:
The two lines are parallel, so
b= a+47
180- (47*2)=180-94= 86
33+86=119
b=180-119=61
a=b-47
a=61-47=14
Please help need this ASAP!!!
Answers
Answer:
I'm sorry I don't know this
Step-by-step explanation:
(-1,-11) and (-6, -7)
Slope
Answers
--------
x₂-x₁
=
-7 + 11
----------
-6 + 1
4
----
-5
slope = -4/5
Jenna used a probability simulator to roll a 12-sided number cube 100 times. Her results are shown in the table below:
Number on the Cube Number of Times Rolled
1 14
2 12
3 10
4 5
5 16
6 5
7 8
8 18
9 2
10 5
11 2
12 3
Using Jenna's simulation, what is the frequency of rolling a 1 on the number cube
Answers
Answer:
The answer is 89 over 100!
Step-by-step explanation:
I have already said this but i saw it again so decided to help again!
<3
write a equation for the table below representing the relationship between the number of hours and earring dollars
Answers
Answer:
Answer of the equation is 3x-4=y
Answer:
3x-4=y
hope it helps!!!
help!! are x and y proportional?
Answers
find the value of given expression
[tex] \sqrt{0} [/tex]
Answers
Answer:
√0=0 is your answer look it once
Answer:
the sqrt of zero is equal to zero
If you know please help I’ll give Brainliest
Answers
Answer:
-9.3 meters per minute
Step-by-step explanation:
a=−2.3(1)−7
Multiply −2.3 and 1 to get −2.3.
a=−2.3−7
Subtract 7 from −2.3 to get −9.3.
a=−9.3
ANSWER !
20 characters rule
Answers
Answer:
-2x + 15y = -24
2x + 9y = 24
= 0 = 24y =0
y = 0
-2x + 15(0) = -24
-2x = -24
----- ------
2 2
x = 12
A man paid $296 for 8 books. How much did he pay for each book?
Answers
Divide total pain by number of books.
296/8 = 37
He paid $37 per book
If you could have one superpower, what would it be and why?
Answers
Answer:
I would have to reverse time
Step-by-step explanation:
so I can see my grandma that had passed away 2 days ago :C
Answer:I would want to be able to move things with my hands.
Step-by-step explanation:
Asia's new boat has a cruising speed of 27 miles per hour. At that rate, how long will it take her to travel the 3 miles across the lake?
Answers
Answer: 1/9 of an hour
Step-by-step explanation: 1/27•3
80% of x is 48. Write an equation that represents this statement.
Answers
(To solve this you cross multiply and divide)
Is anyone available to help me out with this problem?
Answers
Answer:
A'= (0,4)
B'= (-1,2)
C'= (2,1)
D'= (2,3)
Step-by-step explanation:
Hope that this helps! :)
HELP ASAP !!
Suppose you have a total of $2.25 in dimes and
nickels. You have twice as many dimes, as nickels.
Which system of
equations could be used to
determine how many of each coin you have?
Answers
Answer:
Step-by-step explanation:
total money = $2.25 = 225 cents
types of denomination in coins or cents are dimes and nickels
dime = 10 cents , nickel = 5 cents
twice of dimes to nickels
let no of dimes = x and no of nickels = y
our equation
10x + 5y = 225
x = 2y
10(2y) + 5y = 225
20y +5y = 225
25 y = 225
y=9
x =2y 2x9 = 18
so the number of dimes = 18 and nickels = 9
cross verification:
10x18 + 5x9 = 180 +45 = 225
4164 x 37 whats the answer .-.
Answers
Answer:
154,068
Step-by-step explanation:
It might be easier to reformat the problem:
4164
x 37
____
154,068
Several items in a store are on sale. Complete the table with the correct prices.
Original Price
Percent of Discount
Sale Price
$60 20% __?
$140 65% __?
__? 40% $54.60
__? 10% $10.80
Answers
Answer:
1. $48
2.$49
3.$91
4.$12
Step-by-step explanation:
For 1 and 2
To find the sale price, you find out how much is the percentage of the original price. Example :
(20/100)/60 = $12
So $12 is the discount
thus sales price will be $60-$12=$48
Same thing for no.2, find the amount of the percentage and subtract it from the original price
For 3 and 4
To find the original price
1. Subtract the percentage from 100%
2. Multiply the sales price by 100
3. Divide the ans from no.2 by ans from no.1
Example :
100%-40%=60%
$54.60×100=5460
$5460÷60%= $91 (original price)
Same thing for no.4
Hope this helps haha
Find the measure of the indicated angle to the nearest degree.
Please help me!!!
Answers
The mean number of sick days taken by the employees of Company A is 9, with the number of days taken ranging from 0 to 16. The mean number of sick days taken by the employees of Company B is 6, with the number of days taken ranging from 2 to 9. Which BEST compares the number of sick days taken by the employees of the two companies?
Answers
Answer: C) On average, the employees of Company A take more sick days than the employees of Company B.
Step-by-step explanation: USATESTPREP
Answer:
B
Step-by-step explanation:
On average the employees of company a takes more sick days than employees of company b
Mean of company a=9 mean b=6. 9>6
What is the slope of the line?
Answers
Answer:
3/4
Step-by-step explanation: