Answer:
y= -1/4x - 6
Step-by-step explanation:
So the point slop form is y = mx + b, where m is the slope : -1/4, and b is the y-intercept (which we don't know yet).
To find b, all you need to do is plug in -1/4 for m and the point (4, -7) for x and y respectively, giving you:
-7 = (-1/4)(4) + b
Then do some algebra shenanigans: multiply -1/4 by 4 to get -1
-7 = -1 + b
then add the 1 to both sides.
b = -6
Then, you can plug the b and the m back into the problem to give you:
y = -1/4x - 6
Answer:
C
Step-by-step explanation:
Point slope form looks like this: [tex]y-y_1=m(x-x_1)[/tex]
We already have our slope (-1/4)
Our [tex]y_1[/tex] is -7 and our [tex]x_1[/tex] is 4
In this case, our equation would be [tex]y-(-7)=-1/4(x-4)[/tex] and the -(-7) would turn into +7
Therefore, the answer is C
what is 2 ½ divided by ⅘
Answer:
Step-by-step explanation:
2.5(2 1/2) / 0.8(4/5)
= 3.125Hope this helped!!
PLEASE HELP!! ILL GIVE YOU BRAINLIEST
Answer:
x = 3.33
y = -2
Step-by-step explanation:
x(4) + 7 = 20
4x +7-7 = 20-7
4x = 13
x = 3.33
(y+7)(4) = 20
y+7 = 20/4
y+7 = 5
y = -2
Explain why the triangles are similar. Then find the value of x.
Answer:
well u can find triangles in the shape and they are the same shape just smaller
Step-by-step explanation:
combine like terms
3x+4x= 7x
14-1= 13
then divide by 7
1.85(keep going) i think THINK this is right im sorry if it isn't
What is the simplified algebraic expression?
4x – 5
–8x – 5
–8x + 10
–8x – 10
2^2 x 3^4 x 2^5/ 9 x 4^2
Answer:
Please refer to the attachment
Hope it helps
Please mark me as the brainliest
Thank you
need more help on this question
Answer: 79
Step-by-step explanation:
6 ÷ 3 + 9 x² - 4=79
A bag contains 3 red, 5 yellow, and 7 purple marbles. Find the probability of drawing a purple marble followed by a red marble. The first marble is put back in the bag between draws.
Answer:
unsimplified : [tex]\frac{21}{225} or simplified: \: \frac{7}{75}[/tex]
Step-by-step explanation:
Work out : Look above at image.
Bearings Problem Solving Question:
From a lighthouse two boats can be sighted. Boat 1 on a bearing of 60° at a distance of 2km and Boat 2 on a bearing of 340° at a distance of 3km.
a) If Boat 1 is in need of assistance, what bearing would Boat 2 need to travel on to reach it?
b) Assuming Boat 1 does not move, how far would Boat 2 have to travel?
9514 1404 393
Answer:
a) 123.4°
b) 3.3 km
Step-by-step explanation:
In (N, E) coordinates, Boat 1 is located relative to the lighthouse at ...
2(cos(60°), sin(60°)) = (1.0, 1.732) . . . . . km
Boat 2 is located at ...
3(cost(340°), sin(340°)) = (2.819, -1.026) . . . . . km
So, relative to Boat 2, Boat 1 is located at ...
(1, 1.732) -(2.819, -1.026) = (-1.819, 2.758) . . . . . km
This is at a bearing of ...
arctan(2.758/-1.819) = 123.4°
and a distance of ...
√(1.819² +2.758²) ≈ 3.304 . . . . . km
a) Boat 2 would need to travel on a bearing of 123.4°.
b) Boat 2 would need to travel 3.3 km.
_____
Additional comment
We use (North, East) coordinates so we don't have to do the mental gyrations necessary to translate to and from (E, N) coordinates. The latter would correctly orient a map relative to the X-Y Cartesian plane. The former are equivalent to flipping the map over and looking at it from the back side. This is a "rigid transformation", so angles and distances remain unchanged.
How many tonnes is 1555kg
1.555 tonnes I think
PLEASE HELP FAST !!
What is the volume of the cylinder below?
A. 288 units
B. 324 units
C. 216 units
D. 432 units
The volume of the cylinder is 288π units²
How to find the volume of a cylinder?volume of a cylinder = πr²h
where
r = radiush = heightTherefore,
r = 6 units
h = 8 units
volume of the cylinder = π × 6² × 8
volume of the cylinder = π × 36 × 8
volume of the cylinder = 288π units²
learn more on volume here: https://brainly.com/question/12629046
#SPJ1
SOMEBODY HELP ME PLZ!!!!
Answer:
The Answer is c
Step-by-step explanation:
This is because the bus can hold up to 40 people so 0 to 40
which means that the least amount of people on the bus would be 0 and the most amount of people on the bus would be 40 so 0 < x < 40
what is the value of x if 85 + 19x
Answer:
we dont know what the equation equals yes im using this for free points im having a compition with my friend so ty im srry if i offended you
Step-by-step explanation:
Divide using "keep change flip": *
5
3
3
2
3 7/9
3 8/9
4 1/9
4 2/9
HELP!
Store A sold 330 boxes of candy.Store B sold 14% more boxes than store A.What's the total number of boxes that Store B sold?
Answer:
376
Step-by-step explanation:
Does anyone know what measure angle F is ??
Answer:
The angle of F is 30 :)))))))
What is the Pythagorean Theorem used for right triangles
Answer:
The Pythagorean theorem consists of a formula a^2+b^2=c^2 which is used to figure out the value of (mostly) the hypotenuse in a right triangle. The a and b are the 2 "non-hypotenuse" sides of the triangle (Opposite and Adjacent).
Answer:
Step-by-step explanation:
Used t find missing side angles when two sides are present. For example, if you have a short leg and a long leg, you can use the Pythagorean Theorem to find the hypotaneus and vse versa, using it to find the short or long leg if the other two are given.
What is the slope of the line that passes through the points (10, 2) and (19, 14) ?
Answer:
4/3
Step-by-step explanation:
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]
[tex]= \frac{14-2}{19-10}\\\\=\frac{12}{9}\\\\= \frac{4}{3}[/tex]
You rent an apartment that costs
$
1000
$1000 per month during the first year, but the rent is set to go up
$
160
$160 per year. What would be the monthly rent during the 10th year of living in the apartment?
Answer:
$2440
Step-by-step explanation:
a10 = a1 + (n-1)d <--- arithmetic sequence formula
a10 = 1000 + 9(160)
a10 = 2440
Help pls dont answer if you don’t know also ill give brainliest
Answer:
equation: 3x+4 = 31
x = 9
Step-by-step explanation:
1. -2x+5x = 3x
2. 3x + 6 - 2
3. 6+-2 = 4
4. 3x+4 = 31
5. equation: 3x+4=31
6. 31-4 = 27
7. 3x=27
8. 27/3 = 9
9. x= 9
The table below lists some of the characteristics of the houses on Katrina’s street.
Characteristics of Homes For Sale on Katrina’s Street
Bedrooms
Acres of land
Sale price
Appraised value
Property tax
2
0.17
$230,000
$200,000
$1,220
2
0.20
$210,000
$220,000
$1,232
3
0.20
$275,000
$250,000
$1,400
4
0.24
$275,000
$275,000
$1,540
4
0.52
$360,000
$310,000
$1,736
4
0.75
$350,000
$320,000
$1,792
5
1.23
$375,000
$350,000
$1,960
Which relationship describes a function?
(bedrooms, sale price)
(acres of land, appraised value)
(sale price, bedrooms)
(appraised value, property tax)
Answer:
the answer is actually D
Step-by-step explanation:
this is for the the perso above .......
its ashamed what u do for points there r ppl out there that rlly need help :)
Answer:
D) got it on edge
Step-by-step explanation:
A sport bag used to cost $40, then the store decides to change the cost to $52. What is the mark up? Write your answer like this 00% but instead of zeros, put the percent you found.
Answer:
Step-by-step explanation:
Use the given functions to set up and simplify
40=
52=
0%=0
How can you determine the number of solutions of a system of linear equations by inspecting its equations?
Step-by-step explanation:
To find - How can you determine the number of solutions of a system
of linear equations by inspecting its equations?
Proof -
There exists three types of solution for a system of linear equations.
1. No solution.
2. Unique solution.
3. Infinite many solutions.
Now,
Let the 2 linear equations are as follows :
y = ax + b
y = cx + d
1. For no solution -
a = c and b ≠d
For example-
y = -2x + 5
y = -2x - 1
Subtract first equation from second , we get
y - y = -2x - 1 - ( -2x + 5)
⇒0 = -2x - 1 + 2x - 5
⇒0 = -6
Not possible
So, There exist no solution.
2. For unique solution -
a ≠ c and b , d can be any value
For example -
If b and d are same ,
y = 2x - 4
y = -3x - 4
Subtract equation 1st from 2nd , we get
y - y = -3x - 4 - ( 2x - 4)
⇒0 = -3x - 4 - 2x + 4
⇒0 = -5x
⇒x = 0
⇒y = 2(0) - 4 = -4
∴ we get
x = 0, y = -4
If b and d are different
y = 2x - 4
y = -3x + 5
Subtract equation 1st from second
y - y = -3x + 5 - 2x + 4
⇒0 = -5x + 9
⇒-5x = -9
⇒x = [tex]\frac{9}{5}[/tex]
⇒y =2([tex]\frac{9}{5}[/tex]) - 4 = [tex]\frac{18}{5} - 4 = \frac{18 - 20}{5} = -\frac{2}{5}[/tex]
∴ we get
x = [tex]\frac{9}{5}[/tex] , y = [tex]-\frac{2}{5}[/tex]
3. Infinitely many solution -
a = c and b = d
For example -
y = -4x + 1
y = -4x + 1
Subtract equation first from equation second
y - y = -4x + 1 - ( -4x + 1)
⇒0 = -4x + 1 + 4x - 1
⇒0 = 0
Satisfied
So, Infinite many solution possible.
what is the surface area? PLEASE HELP WILL MARK BRAINLY
Answer:
Hiya!
Are there any answers I can choose from?
Thank you muchly,
Pandora
Step-by-step explanation:
1. If you multiply 6 by 1/4 will your answer be greater or less than 6. How do you know?
Answer:
less than 6
Step-by-step explanation:
when you multiply a number by a fraction less than 1 you are calculating a portion of that number so you get a result smaller.
4(x+4)+2x=52 please help lol
Answer:
x=6
Step-by-step explanation:
Given: 4(x+4)+2x=52
Distribute.
4x + 16 + 2x = 52.
Simplify.
6x + 16 = 52.
Subtract 16 on both sides to isolate out the variable.
6x = 36
Divide.
x = 6
Answer:
x = 6
Step-by-step explanation:
first we distribute the 4 to the (x + 4) by multiplying 4 times each of those
4x + 16 + 2x = 52
Then, combine like terms:
6x + 16 = 52
then subtract 16 from both sides of your equation
6x = 36
then divide both sides by 6
x = 6
let me know if you have questions
PLEASE HELP ME ASAP!
The difference between three times a number and the sum of twelve squared plus ninety-two equals five hundred fourteen.
Answer:
Number = 250
Step-by-step explanation:
Let x = "a number"
Difference means subtraction:
3x - (12^2 + 92) = 514
3x = "three times a number"
12^2 + 92 = "the sum of twelve squared and ninety two"
Solve from there.
helpppppp please.....
Answer:
124
Step-by-step explanation:
42+82=? (ext ∠'s of triangle equal to int opp)
42+82= 124°
What is the measure of angle x?
Need help on 10 and number 11
Answer:
Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020
Step-by-step explanation:
Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020
Here are six common ones. Lack of sleep. Not getting enough sleep is perhaps the greatest unappreciated cause of forgetfulness. Too little restful sleep can also lead to mood changes and anxiety, which in turn contribute to problems with memory.Apr 18, 2020
Laura scored a nine, eight, ten, and seven on her first four math tests. Assuming that the perfect score is ten, what score must she get on her fifth test to have total of at least 42 points?