Answer:
Nicole is correct
Step-by-step explanation:
They need to get the 3y on one side of the equal sign and the known numbers on the other side. To do this, they must subtract the 4 from both sides.
Solve the system by graphing
6x – 9 = y
y = -3x
i can graph but how do you solve it
Answer:
I love algebra anyways
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
A racing shell, which is a boat a crew team rows, moves 20 km/h in still water. During practice, the team rows 36 km against the current and 22 km with the current. Find the speed of the river current if the team rows a total of 3 hours.
Answer:
2 km/h
Step-by-step explanation:
Let x represent the speed of the river current, t₁ be the time spent rowing against the current and t₂ be the time spent rowing with the current.
Since the speed of the still water = 20 km/h.
The speed of rowing against the current = (20 - x)
The speed of rowing with the current = (20 + x)
We know that velocity = distance / time. Hence time = distance / velocity
t₁ = 36 / (20 - x)
t₂ = 22 / (20 + x)
but t₁ + t₂ = 3 hours
Therefore:
3 = 36 / (20 - x) + 22 / (20 + x)
multiply through by 400 - x²
3(400 - x²) = 36(20 + x) + 22(20 - x)
1200 - 3x² = 720 + 36x + 440 - 22x
3x² + 14x -40 = 0
This gives x = -6.7 or x = 2
x cannot be negative therefore x = 2 km/h
The speed of the river current is 2 km/h
Answer:
2km/h is correct
Step-by-step explanation:
The other guy is absolutely correct
if the length of a certain rectangle is decreased by 4cm and the width is increased by 3cm,a square with the same area would result.find the perimeter of original rectangle
Answer:
The perimeter is 50
Step-by-step explanation:
The original area is LW
The new area is (L-4)(W+3)
These areas are the same
1: (L-4)(W+3)=LW
You are also told that the new figure is a square, hence
2: (L-4)=(W+3)
Equation (2) implies
3: L=W+7
Substitute for L in Equation (1) and solve for W
(W+7-4)(W+3)=(W+7)W
W^2+3W+7W+21-4W-12=W^2+7W
6W+9=7W
W=9
Now use Equation (3) to solve for L
L=16
The perimeter is 2W+2L
P=18+32=50
6th grade math help me pleaseee
Answer:
A) 3(2x-1) --> 6x - 3
B) 10(b+4c) --> 10b + 40c
C) 9(g-5h) --> 9g - 45h
D) 7(4n-5m-2) --> 28n - 35m - 14
E) a(b+c+1) --> ab + ac + a
F) (8j-3l+9)6 --> 48j - 18l + 54
G) (40s+100t)/10 --> 4s + 10t
H) (48p+24)/6 --> 8p + 4
I) (2b+12)/2 --> b + 6
J) (20r-8)/4 --> 5r - 2
K) (49g-7)/7 --> 7g - 1
L) (14g+22h) / 1/2 --> 28g + 44h
what was an important concern for the founding fathers when drafting the articles confederation?
Answer: They wanted the government to not be too powerful, in other words they wanted the states to have more power
Step-by-step explanation:
Evan subtracts 247 from 642 and get 395. What addition equation can he use to check his answer.
247+ ? =642
Answer:
Answer down below!
Step-by-step explanation:
When checking work, simply add your answer back in.
In this case, his answer was 395.
247 + 395 = 642
if he gets the same answer, then he is correct.
find the volume of this prism
Answer:
i think it's 46.............
Helpy helps me with this question
Answer:
it's the third one cuz the rest aren't divisible by 5:00 because the five usually goes up by then by fives then zeros so the end since it's a zero it's divisible by five
Answer:#3 5990
Step-by-step explanation:
5 10 15 20 25 the others dont have a five or a zero at the end
The perimeter of a square is given as 8x+20. Write two different expressions for the perimeter. Use factoring to write one of the expressoins. Are the expressions equivalen? Explain
Answer:
P = 4(2x + 5)
P = (2x + 5)+(2x + 5)+(2x + 5)+(2x + 5)
Step-by-step explanation:
Given that:
Perimeter of square = 4 * s
Where s = side length
If perimeter, P = 8x + 20
Then,
4s = 8x + 20
Divide both sides by 4
4s / 4 = (8x + 20) / 4
s = 2x + 5
P = 4s
P = 4(2x + 5)
Or
P = 2x + 5 in 4 places
P = (2x + 5)+(2x + 5)+(2x + 5)+(2x + 5)
Tax of northglenn city is calculated at 6.5%. Carlos is at a convenience store with his mom and needs to convert the percent the percent to a decimal to input it on his calculator. What decimal number should he use?
Jericho takes 3 tests in one month. The number of correct answers and the total
number of questions on each test are shown in the table. List the tests in order
from the least percent of questions correct to the greatest percent of questions
correct. Show your work.
Answer:
you need to show the table for this question to get solved
Answer:
kiygtfrsass2EDWWQASDCfe
Step-by-step explanation:
if h (x) = |5x - 17|, find h(3)
Answer:
2
Step-by-step explanation:
5x - 17
5(3) - 17 = 15 - 17 = -2
let me know if its right or wrong
Simplify
4y — 4ys + 2y – 5у — 54 – 34
Answer:
-4ys + y - 88
Step-by-step explanation:
When we have to simplify equations that have different variables, we always have to look at the like terms, which the like terms are ones that contain the same value and variable. So let's look at our equation :
4y — 4ys + 2y – 5у — 54 – 34
We can see three different terms here :
ys, y, and a constant term.
The rule is that we can only combine two properties that have the same like term, so in the equation :
4y — 4ys + 2y – 5у — 54 – 34
These have the same variable, therefore we can combine like terms.
4y + 2y - 5y
6y - 5y
y
Now implace it into the equation :
y — 4ys — 54 – 34
Onto the next property :
y — 4ys — 54 – 34
This is alone, therefore we can leave it :
y — 4ys — 54 – 34
These two are the same property, so do the following :
-54 - 34
-88
Impace into the equation :
y - 4ys - 88
Now that we have no same common like terms, we can order our equation to greatest value to least :
-4ys + y - 88
HELP ME seriously i have 40 minutes left
Answer:
10 dollars less
Step-by-step explanation:
just trust me bro
.What is the standard form of y – 8 = 2(x + 3)?
A line contains the points (2,4) and (6,16). Write the linear function for the line in the form y=Mx+b
Answer:
y = 3x - 2
Step-by-step explanation:
Given the points :
(2,4) and (6,16).
x1 = 2 ; y1 = 4 ; x2 = 6 ; y2 = 16
Y = mx + b
m = slope
b = intercept
m = Rise / Run
Rise = y2 - y1 = 16 - 4 = 12
Run = x2 - x1 = 6 - 2 = 4
m = 12 / 4 = 3
Y = 3x + b
4 = 3(2) + b
4 = 6 + b
4 - 6 = b
b = - 2
Equation becomes ;
y = 3x - 2
Look at the table below. For a certain tree, the table shows the relationship between the height of the tree in feet to its age in years.
What is the rate of change of the height of the tree to the age of the tree?
•The height of the tree increases by 2 feet for every year in the age of the tree.
•The height of the tree increases by 5 feet for every year in the age of the tree
•The height of the tree increases by 2 feet for every 5 years in the age of the tree.
•The height of the tree increases by 5 feet for every 2 years in the age of the tree.
Answer:
D
Step-by-step explanation:
The last option in the picture
Over the weekend Mary binge watched 3 out of the 12 seasons of her favorite television show. What percent of the shows did she watch?
Answer:
1/4 is answer.
Step-by-step explanation:
Divide 3 to 12 = 1/4
Hope this helps. :)
A ladder leaning against the wall makes an angle of elevation of 74. If the foot of the ladder is 6.5 feet from the
wall, how high up the wall is the ladder?
Answer:
the answer is 6.5 * tan74 = 22.67 feet
Step-by-step explanation:
Help pleaseeeeee! i dont remember all of this
Answer:
35cm3
Step-by-step explanation:
7x5=35
Answer: The correct answer is 35. 7 * 5 = 35
Step-by-step explanation:
Find the value of x.
106°
43°
X°
X =
Answer:
Maybe the figure of this question is a triangle.
If so...the answer comes something like this....
Hope it helps! :)
Color of socks
Number of socks
white
8
black
7
blue
2
brown
3
From the table, the ratio of white socks to brown socks is
Select two ratios equivalent to the ratio of white socks to brown socks.
32
A.13
B.15
41
C.32
12
D.40
15
Answer:
D.40:15 are equivalent to the ration of white socks to brown sock which is 8:3
Find the marked prices of the following , given the percentage discount and the sale prices: part a: 12% discount , and the sale price $77
part b : 25% discount , and the sale price $123
Answer:
A) $87.5
B) $164
Step-by-step explanation:
A) Marked Price (Original Price)
= [tex]\frac{Sale Price}{1 -Discount}[/tex]
=[tex]\frac{77}{1-0.12}[/tex]
=87.5
B) Marked Price (Original Price)
=[tex]\frac{Sale Price}{1 -Discount}[/tex]
=[tex]\frac{123}{1-0.25}[/tex]
=164
How to tell the difference between multiplication and division word problems?
Answer:
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction and division. The result of a multiplication operation is called a product. And division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication
In ΔHIJ, the measure of ∠J=90°, JI = 48, IH = 73, and HJ = 55. What is the value of the tangent of ∠H to the nearest hundredth?In ΔJKL, the measure of ∠L=90°, JL = 60, KJ = 61, and LK = 11. What ratio represents the tangent of ∠J?
Answer:
11:60
Step-by-step explanation:
In ΔHIJ, given the measure of ∠J=90°, JI = 48, IH = 73, and HJ = 55. We are to find tan<H
Using SOH CAH TOA
tan theta = opposite/adjacent
JI is the opposite (facing m<H)
HJ will be adjacent
tan m<H = JI/HJ
tan m<H = 48/55
tan m<H = 0.87 (to the nearest hundredth)
In ΔJKL, the measure of ∠L=90°, JL = 60, KJ = 61, and LK = 11. What ratio represents the tangent of ∠J?
Using SOH CAH TOA
tan theta = opposite/adjacent
LK is the opposite (facing m<J)
JL will be adjacent
tan m<J = LK/JL
tan m<H = 11/60
Hence the ratio that represents the tangent of ∠J is 11:60
Rhonda and Shalene live together in an apartment, so they combine their income each week to pay for their rent and bills. Rhonda's paycheck is modeled by the function r(x)=22x+50,r(x)=22x+50, where xx is the number of hours worked. Shalene's paycheck is modeled by the function s(x)=30x−25,s(x)=30x−25, where xx is the number of hours worked. Which function represents their household income if they work the same number of hours?
Answer:
(r+s)(x)=52x+25
Step-by-step explanation:
i dont know how to explain but this is what I choose and it was right.
Find the area of the
triangle.
Answer:
472.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
Base (b) = 30 yd
height (h) = 31.5 yd
Area of the triangle
= 1/2 * b * h
= 1/2 * 30* 31.5
=472.5 yd²
X + 2y = 10
3x + 4y = 8
Which point is the solution to the system of equations?
Answer:
x = -12
y = 11
Step-by-step explanation:
i used substitution and let 'x' = 10 - 2y
3(10 - 2y) + 4y = 8
30 - 6y + 4y = 8
30 -2y = 8
-2y = -22
y = 11
x + 2(11) = 10
x + 22 = 10
x = -12
A triangle has side lengths of 6, 8, and 9. What type of triangle is it? right obtuse equiangular acute
Answer:
acute
Step-by-step explanation:
Answer:
It is an acute triangle
Step-by-step explanation:
If it is an acute triangle, a^2 + b^2 > c^2
If it is a right triangle, a^2 + b^2 = c^2
If it is an obtuse triangle, a^2 + b^2 < c^2
If it is an equilateral triangle, a = b = c
6^2 +8^2 ? 9^2
36+64 ? 81
100 ? 81
? is >, meaning it is an acute triangle.
6 times a number is equivalent to 28 less than 2 times the number. What is the number
Answer:
Step-by-step explanation:
2x+28<=6x
28<=4x
7<=x