Answer:
y =3x + 5
Step-by-step explanation:
The slope intercept form of an equation is expressed as;
y = mx+c
m is the slope
c is the intercept
Get the intercept
Substitute m = 3 and (-2,-1) into y = mx+c
-1 = 3(-2)+c
-1 = -6 + c
c = -1+6
c = 5
Get the equation.
Recall that y = mx+c
y =3x + 5
This gives the required equation
A? is a graphical display of a set of data where each separate piece of data is shown as a
mark above a number line.
Answer:
dot plot a visual display in which each piece of data is represented by a dot above a number line.
Step-by-step explanation:
[tex]4x + 2x = 20 \\ x + 3x = 50[/tex]
simotenus equation
Answer:
I think there is an error in the question, I assume it reads:
4x+2y=20
x+3y=50
If not, please make appropriate corrections to the question.
Answer: x=-4, y=18
Step-by-step explanation:
4x+2y=20
Simplify, divide by two,
2x+y=10.....................(1)
x+3y=50....................(2)
Multiply (2) by 2
2x+6y=100 ....................(2a)
Subtract (1) from (2a)
2x+6y - (2x+y) = 100 - 10
5y = 90
y=18..............................(3)
Substitute (3) into (1)
2x+(18)=10
2x = 10-18 =-8
x=-4 ............................(4)
Substitute (3) and (4) into (1) for verification
2x+y = 2(-4)+18 = 18-10 = 10 checks.
Substitute (3) and (4) into (2) for verification
x+3y=-4+3(18) = -4+54 = 50 checks.
Have a nice day!
Please help and thank you! Will mark whoever answers right the brainliest!
John will paint the walls and ceiling of the room shown. The windows measures 3 feet by 6 feet. The door measures 7 feet by 3 feet.
Part A: Describe the surfaces John will not paint.
Part B: Judy says you need to use subtraction to find the area of the surfaces John will paint. Is Judy correct? Explain.
Part C: A gallon of paint covers about 350 squared feet. How many gallons of paint will John need to buy to paint the walls and ceiling of the room? Justify your answer.
Answer:
Step-by-step explanation:
Part A. John will not be painting the floor area of that of the door or window openings.
Part B. Subtracting the areas of the floor, door, and window from the total surface area will provide the area to be painted so Judy is correct.
Part C.
We first need to find the area to be painted.
A=floor+2(wall1)+2(wall2)-window-door
A=14(7)+2(7)8+2(14)8-3(6)-3(7)
A=98+112+224-18-21
A=395 ft^2
Since a gallon of paint will cover 350 ft^2
395ft^2(gal/350ft^2)=1.13 gal
John will need approximately 1.13 gallons of paint. (Rounded to nearest hundredth of a gallon)
What is the place value of the 7 in 436.967
Answer:
thousandths
Step-by-step explanation:
Find the solution of the system of equations.
y=1 = -x + 5 and y = 1/6-1
PLEASE HELP ME !!
A negative number is always = the absolute value of a number
Answer:
To find the absolute value of an negative number, just take away the negative sign
The absolute value of a number can NEVER be negative
Step-by-step explanation:
For example, to find the absolute value of -22, it would be 22, since it is 22 points away from zero. To find the absolute value of -99.9, it would be 99.9.
A negative number is NOT always the absolute value of a number.
For example, the absolute value of 34 is, 34. If you plot it on a number line, it is 34 points away from zero, therefore proving a negative number is NOT always the absolute value of a number.
The absolute value of a number can NEVER be negative.
Answer:
The absolute value of a number is always POSITIVE! To find the absolute value, all you need to do is take away the negative sign!
Have a great day!
Which graph represents 49x2 + 4y2 + 196x – 40y + 100 = 0?
Answer:
D
Step-by-step explanation:
Answer:
its D
Step-by-step explanation:
desmos
WILL GIVE BRAINLST
HAVE A AMAZING DAy !!
Answer:
u 2
and stay positive :)
Step-by-step explanation:
Hello! I do not know if you meant to put up a question, but I also hope that you have an amazing day! :)
Joe and Nancy decide to take a road trip. The first 72 miles of the drive are pretty easy, while the last 84 miles of the drive are filled with curves. They drove at an average 7 miles per hour faster for the first 72 miles of the trip. The entire trip took 3 hours. How fast were Joe and Nancy driving for the first 72 miles of the trip?
Answer:
120
Step-by-step explanation:
let r be the rate for the slower, 84 miles, portion of the trip
let t1 be the time for the 120 miles portion of the trip and t2 for the 84 miles portion
:
1) t1 + t2 = 3
2) (r+9)*t1 = 120 and r*t2 = 84
3) (r+9)*t1 + r*t2 = 120 + 84 = 204
:
expand the left side of equation 3
:
r*t1 + 9*t1 + r*t2 = 204
r*(t1+t2) +9*t1 = 204
:
substitute for (t1+t2) by using equation 1)
:
3*r + 9*t1 = 204
:
divide both sides of = by 3
:
4) r + 3*t1 = 68
:
use the equation for t1 from the equations defined at 2)
:
t1 = 120 / (r+9)
:
substitute for t1 in equation 4)
:
r + 3*(120/(r+9)) = 68
:
r^2 +9r +360 = 68 * (r+9)
:
r^2 -59r -252 = 0
:
(r-63)*(r+4) = 0
:
r = 63 and r = -4
:
we reject the negative value for r
:
***************************************************************************
Joe and Nancy drove 63+9 = 72 miles per hour for the first 120 miles of the trip
A tortoise can reach speeds of 0.12 m/s. Work out the speed of a tortoise in
kilometres per hour (km/h)
T
Answer:
yous should multiply it by 3.6;
0.12*3.6=0.432 km/h
Turner’s backyard deck cost $38.31 per square meter to build. The deck is 9 meters wide and 11 meters long. How much did it cost to build the deck?
Answer:
$3792.69
Step-by-step explanation:
First, we would find the area,
Area = width x length
Area = 9 x 11
Area = 99[tex]m^{2}[/tex]
Since each square meter costs $38.31, we would multiply the cost with the area,
Total Cost = 99 x 38.31
Total Cost = $3792.69
(Anyone can correct me if I'm wrong)
ill mark brainlist plss help
Answer:
kilometers
Step-by-step explanation:
I hope it´s right for you
If DB = 18cm and AC = 24cm, Use the properties of rhombus to find the length of one side of the rhombus please helppp!!!!
Answer:
15 cm
Step-by-step explanation:
You need to remember 2 theorems about a rhombus.
1. The diagonals of a rhombus bisect each other
2. The diagonals of a rhombus are perpendicular to each other
In other words, the diagonals of a rhombus are perpendicular bisectors.
BE = 9 and AE = 12
ΔAEB is a right triangle. So, the Pythagorean theorem says
[tex]9^{2} + 12^{2} = AB^{2}[/tex]
[tex]AB^{2}[/tex] = 81 + 144
= 225
AB = [tex]\sqrt{225} = 15[/tex] cm
I really need help Will give brainyest!!!
Answer:
C.
Step-by-step explanation:
The median is the middle line of the box. 30 is for Town A and 40 is for Town B. 30 is less than 40
h(x)=-5(x-1)^2+45
what is the maximum height
9514 1404 393
Answer:
45
Step-by-step explanation:
The equation is that of a parabola in vertex form.
y = a(x -h)^2 +k
where 'a' is the vertical scale factor and (h, k) is the vertex.
Comparing this to the given function, you find ...
a = -5
h = 1
k = 45
The negative value of 'a' tells you the parabola opens downward, so the y-value of the vertex is the maximum value of the function: 45.
Can someone help
Me with this please I will mark u brilliant
Answer:
Option 3 Is your answer
Step-by-step explanation:
Brainlist plz
help please my tutor is being annoying and she finally left she said i have to finish before she comes back
Answer:
2x-6
Step-by-step explanation:
The product of s and 10
Answer:
10s
Step-by-step explanation:
The product of s and 10
In mathematic, when the word "product" is used, it means multiplication.
10 × s ---> 10s *Both of them are the same.*
Hope this helps and stay safe, happy, and healthy, thank you :) !!
Answer:
The product of s and 10 = 10s
Step-by-step explanation:
The term “product” determines a multipaction problem.
The variable S is unknown within the value
so with a numerical and a algebraic number, the number comes together
Determine the domain and range of each graph. Use inequalities to write your answer.
Answer: Domain is [3,∞), The range is All real numbers.
Step-by-step explanation:
Write the word as an equation
2 1/2 is the same as the sum of the number w and 1/2
An equation that represents this sentence is...
The word as an equation 2 1/2 is the same as the sum of the number w and 1/2 is 2 1 / 2 = w + 1 / 2
How to write word as an equationEquations are mathematical statements containing two algebraic expressions on both sides of an 'equal to (=)' sign.
Therefore, the word as an equation 2 1/2 is the same as the sum of the number w and 1/2 is as follows;
The sum of the number w and 1/2 is w + 1 / 2.
Then, the word as an equation 2 1/2 is the same as the sum of the number w and 1/2 is
2 1 / 2 = w + 1 / 2
learn more on equation here: https://brainly.com/question/26352475
What is the correct expanded form and value of 43?
O 4+4+4= 12
O 4.4.4=64
O 3+3+3+3= 12
O 3.3.3.3= 81
Your answer would be 4.4.4=64.
Answer:
B. 4・4・4= 46 I hope it helps.
There are at least 5 slices of bread left in the bag. Use p as your variable
The inequality is:
Answer: p ≤ 5
Step-by-step explanation: The inequality is: p ≤ 5
What's the probability/area to the RIGHT of z = 1.35 ?
Answer:
Who was the first president of United States?
A Benjamin Franklin
B George Washington
C Abraham Lincoln
D John Adams
...
Dear Math, I am sick and tired of finding your x. Just accept the fact that she is gone. MOVE ON, DUDE.
Answer:
honestly lile wth are you obessed
Answer:
ahem,
Step-by-step explanation:
Dear math, solve your own problems, i have too much of my own. Amen
Question 10 (2 points)
Solve.
3x²+2=17
Answer:
x1
Step-by-step explanation:
How I find total surface area
Answer:
there's this site called ixl.com that I use to help me it works very good I highly recommend it !
Step-by-step explanation:
GIVING BRAINIEST!!!!!!What is the equation of the line that passes through 6,4 and 2,10
Answer:
y = -3/2x + 13
Step-by-step explanation:
(6,4) and (2,10)
Slope:
m=(y2-y1)/(x2-x1)
m=(10-4)/(2-6)
m=6/(-4)
m = -3/2
Point-slope intercept:
y - y1 = m(x - x1)
y - 4 = -3/2(x - 6)
y - 4 = -3/2x + 9
y = -3/2x + 13
HURRY PLEASE!!!! Based on the information given, can you determine that the quadrilateral must be a
parallelogram? Explain.
Given: XN NZ and NY Z NW
X
Y
Z
Answer:
I'm going to say no.
Step-by-step explanation:
What you are given is true of a parallelogram but you still need some more information.
You would need at least one of the angles.
What is the volume of the cone to the nearest cubic millimeter (use pi)
I need help with this problem will mark the brainliest
Answer:
angle C = angle E. that my answer