Answer:
C) 9n - 3
Step-by-step explanation:
make an expression
2n - 1 - (-7n + 2)
open the parenthesis
2n - 1 + 7n - 2
combine like terms
9n - 3
9 = -5b - 23
What is b?
Answer:
9=-5b-23 +23
32=-5b ÷(-5)
-6.4=b
Step-by-step explanation:
prove me wrong
The diameter of a circle is 2 centimeters. What is the circle's circumference?
Answer:
i wont give you the answer, but i can help you find it.
Step-by-step explanation:
the equation to find the answer is C= 2 x 3.14
I need help my teacher never taught me well
Answer:
3:20
Step-by-step explanation:
Answer:
4:18
hope it helps.....
help for math ratios
Answer:
72:56
Explanation:
is the answer because 9 can be divided by 18 and 36. 7 can also be divided by 14 and 21. So, that leaves you with the answer 72:56
Which points are on the graph of g(x) = (1/5)x?
Select each correct answer.
(3, 125) (-2,5) (1, 0) (-1, 5)?
Given:
The function is
[tex]g(x)=(\dfrac{1}{5})^x[/tex]
To find:
The correct ordered pairs.
Solution:
We have,
[tex]g(x)=(\dfrac{1}{5})^x[/tex]
For x=3,
[tex]g(3)=(\dfrac{1}{5})^3[/tex]
[tex]g(3)=\dfrac{1}{125}[/tex]
So, the ordered pair is [tex](3,\dfrac{1}{125})[/tex].
For x=-2,
[tex]g(-2)=(\dfrac{1}{5})^{-2}[/tex]
[tex]g(-2)=(5)^2[/tex] [tex][\because (\dfrac{a}{b})^{-n}=(\dfrac{b}{a})^n][/tex]
[tex]g(-2)=25[/tex]
So, the ordered pair is [tex](-2,25)[/tex].
For x=1,
[tex]g(1)=(\dfrac{1}{5})^1[/tex]
[tex]g(1)=\dfrac{1}{5}[/tex]
So, the ordered pair is [tex](1,\dfrac{1}{5})[/tex].
For x=-1,
[tex]g(-1)=(\dfrac{1}{5})^{-1}[/tex]
[tex]g(-1)=(5)^1[/tex] [tex][\because (\dfrac{a}{b})^{-n}=(\dfrac{b}{a})^n][/tex]
[tex]g(-1)=5[/tex]
So, the ordered pair is (-1,5). This is the correct answer.
Therefore, the correct option is D.
I need help solve and explain it plz and this you will get 20 points
Answer:
Y=-1
Step-by-step explanation:
-4(y-2)
-4y+8=12
-8. -8
-4y=4
-4. -4
y=-1
Answer: Y = -1
Step-by-step explanation:
This is solved using the distributive property.
1. Distribute, so now it should look like -4y + 8 = 12
2. Now subtract the 8 from both sides to isolate -4y = 4
3. Divide -4 on both sides to get y = -1
Carlos needs to save an additional $565 before he can purchase a car for his son he plans to save $25 each week at this rate at the end of how many full weeks will he have enough money to purchase the car
Given:
Savings for each week = $25
Amount required before Carlos purchase a car = $565
To find:
The number of full weeks in which he will have enough money to purchase the car.
Solution:
Let the required number of weeks be x.
Savings for 1 week = $25
Savings for x week = $25x
Savings must be greater than equal to $565 to purchase the car.
[tex]25x\geq 565[/tex]
Divide both sides by 25.
[tex]x\geq \dfrac{565}{25}[/tex]
[tex]x\geq 22.6[/tex]
So, the smallest possible integer value of x is 23.
Therefore, 23 week are required to have enough money to purchase the car.
Select the reason why these triangles are
similar. If they are not, select "Not similar".
A. AA
B. SAS
C. SSS
D. Not similar
Answer:
The reason why these triangles are similar is;
A. AA
Step-by-step explanation:
A two column proof can be presented using the drawing of the question diagram created with Microsoft Visio as follows;
Statement [tex]{}[/tex] Reason
[tex]\overline {AB}[/tex] ║ [tex]\overline {DE}[/tex] [tex]{}[/tex] Given
∠ACB ≅ ∠DCE [tex]{}[/tex] Vertically opposite angles
∠BAC ≅ ∠DEC [tex]{}[/tex] Alternate interior angles theorem
∠ABC ≅ ∠CED [tex]{}[/tex] Alternate interior angles theorem
ΔABC ~ ΔCDE [tex]{}[/tex] By Angle-Angle (AA) similarity postulate
Therefore, the correct option is AA.
A dress that costs r dollars is on sale for 25% off. Which expressions represent the sale price, in dollars, of the
dress? Select all that apply.
A 0.252
B0.752
C 1.252
D 2(1 – 0.25)
E
2 - 0.25
F -0.752
Answer:
b because its correct and they solved the equation
xiokijhgfcxyuiuhygfdxsghjkmjnbv m,kjhgtfrdsxcvbnmkiuytredxcvbnfytumvjgcrdhg
Evaluate the expression:
-(-49)
-48
-49
49
50
PLEASE HURRY AND ANSWER THIS
49, here's why...
a negative multiplied by a negative equals a positive, and if you're working with parentheses, and you don't see a sign, at all, then it means you have to multiply.
hope I helped :)
help please ! so i can finish this assignment
Answer:
-0.1, -0.02, [tex]\frac{5}{6}[/tex], [tex]|\frac{9}{8}|[/tex], 10
Step-by-step explanation:
Write an equation of the line passing through point P(2, 3) that is perpendicular to the line y -4 = -2(x+3)
Simplify 30 - 5(15- 10).
A. -55
B. 125
c. 20
D. 5
Answer:
Your answer is D i guess
Step-by-step explanation:
Here you go mate
step 1
30 - 5(15- 10) equation/question
step 2
30 - 5(15- 10) simplify
30-(5)^2
30-25
answer
5
Jif peanut butter costs $3.29 for 16 oz. Skippy peanut butter costs $7.69 for 40 oz. Which is the better buy?
A pair of linear equations is shown below: y = −3x + 5 y = x + 2 Which of the following statements best explains the steps to solve the pair of equations graphically? (4 points) On a graph, find the point of intersection of two lines, the first line has y-intercept = 5 and slope = −3, and the second line has y-intercept = 2 and slope = 1. On a graph, find the point of intersection of two lines, the first line has y-intercept = −3 and slope = 5, and the second line has y-intercept = 1 and slope = 2. On a graph, find the point of intersection of two lines, the first line has y-intercept = −5 and slope = 3, and the second line has y-intercept = −2 and slope = −1. On a graph, find the point of intersection of two lines, the first line has y-intercept = 3 and slope = −5, and the second line has y-intercept = −1 and slope = −2.
Answer:
On a graph, find the point of intersection of two lines; the first line has y-intercept = 5 and slope = −3, and the second line has y-intercept = 2 and slope = 1.
- sorry I answered late! but I just did the test and got a 100 :)
5
Thrifty Rentals charges $8.85 per hour to rent a
tiller. About how much will Rodney pay if he rents
the tiller for 10.25 hours?
A
$2.15
B
$19.85
С
$90.00
D
$109.00
What is the slope and what does the slope represent in this situation
Answer:
Step-by-step explanation:
slope is -60
it's the rate of change... in the distance to the destination
Which equation best represents the line on
the graph?
3
y
B.
-
A. y--3-4
y
-x-4
C. y ---4
D. y-r+4
Answer:
B. y=3/2x - 4
Step-by-step explanation:
As you see in the graph the y intercept was lying on -4 and you rise 3 time and run 2 time to get to your next point.
5.
In the given right triangle, find the missing length to the nearest tenth.
A. 25 ft
B. 24.1 ft
C. 8.5 ft
D. 7.9 ft
Answer:
The answer is A. 25 ft
Step-by-step explanation:
Given a=24 and b=7,
c = 25
∠α = 73.74° = 73°44'23" = 1.287 rad
∠β = 16.26° = 16°15'37" = 0.28379 rad
h = 6.72
area = 84
perimeter = 56
inradius = 3
circumradius = 12.5
I need to use the Pythagorean Theorem to find X. I don’t know how to do that!!
Answer:
17) x=8
18) [tex]x=\sqrt{189}[/tex] or [tex]x= 3\sqrt{21}[/tex]
Step-by-step explanation:
So the rule is [tex]a^{2} +b^{2} =c^{2}[/tex], "c" being the hypothenuse, or the long line that is opposite to the right angle.
17) We know that both values of x are equal to each other, which makes everything 10x easier!
[tex]x^{2} +x^{2} =(8\sqrt{2}) ^{2}[/tex]
(by the way we know the x values are our a and b values because they are legs! the way I like to remember the legs is that they are connected to the right angle box, and therefore support the hypothenuse)
simplify (╥︣﹏╥)
[tex]2x^2=8^2(\sqrt{2} )^{2}[/tex]
[tex]2x^2=64(2)[/tex]
[tex]2x^2=128[/tex]
[tex]x^{2}= 128/2[/tex]
[tex]x^{2} =64[/tex]
x=8
18) Just pretend that the flipped triangle doesn't exist. It's parallel to the other triangle with values on it, and basically servers no purpose other than being parallel to the sister triangle :)
Anyways, since we know the hypothenuse (15) but we don't know one of our leg values (x), we're going to change our equation a bit!
[tex]c^{2} - b^{2} = a^{2}[/tex]
It doesn't matter if you put the one leg value in a or b, just as long as you stick to that same equation you started with the entire time!
[tex]15^{2} -6^{2} =x^{2}[/tex]
[tex]225-36=x^{2}[/tex]
[tex]x^{2} =189[/tex]
[tex]x=\sqrt{189}=3\sqrt{21}[/tex]
The more you do these, the easier they'll get, so don't worry!
WILL GIVE BRAINLIEST PLEASE HELP
Answer:
Yes they are similar using the SSS postulate
Step-by-step explanation:
All sides are in the same ratio!
Another tip is that one triangle is a dilated shape of the other
Sadie's office had already recycled 13 kilograms this year before starting the new recycling plan, and the new plan will have the office recycling 8 kilograms of paper each week. How many weeks will it take Sadie's office to recycle a total of 29 kilograms of paper?
Answer: 2 weeks
Step-by-step explanation:
The office had already recycled 13 kilograms of paper this year and need to recycle a total of 29.
The number of kilograms left is:
= 29 - 13
= 16 kilograms of paper
Recycling at a rate of 8kg per week, the number of weeks it will take them to reach 16 kilograms is:
= 16 / 8
= 2 weeks
Write an algebraic expression or equation to represent each word phrase.
Five times the sum of a number n and eleven
Answer:
{ N+11 }x5
Step-by-step explanation: First you have to add <n> plus eleven. In order to get a sum, you must multiply by five.
Write an equation in slope-intercept form for the graph shown.
Answer:
y = -3x + 2
Step-by-step explanation:
b is your y intercept, where the line crosses the y axis
m is your slope, since the line is going down we know it is negative
the slope was -6/2, which simplifies to -3
A soccer team paid $28 per uniform. They bought 16 uniforms. How much money did the team spend on uniforms?
Answer:
$448
Step-by-step explanation:
3y=-6x+1 solve for y
Answer:
y= 2x +1/3
Step-by-step explanation:
3y= 6x+1
divide the whole equation by 3 to isolate y
y= 2x+1/3
Following are the calculation to the given value:
Given:
[tex]3y=-6x+1[/tex]
To find:
[tex]y=?[/tex]
Solution:
[tex]\to 3y=-6x+1\\\\\to y=-\frac{6x+1}{3}\\\\\to y=-\frac{6x}{3}+\frac{1}{3}\\\\\to y=-2x+\frac{1}{3}\\\\[/tex]
The final value of y is "[tex]=-2x+\frac{1}{3}\\\\[/tex]".
Learn more:
brainly.com/question/22800706
Only answer if you 100% KNOW its correct! :)
Replace the question mark in the above problem with the appropriate number.
Answer:
The ? should be a 6
Answer:
Step-by-step explanation:
6
3. The Statue of Liberty is 305 feet tall. Lisa has a replica that is 9 inches tall and the
length of the right arm holding the torch isi inches. How tall is the actual right arm
holding the torch?
Answer: 33.9 inches
Step-by-step explanation:
Assuming you meant to write that the length of the right arm holding the torch is 1 inch:
The statue is 305 feet tall and the replica is 9 inches tall.
If the replica's right arm is 1 inch, the actual arm will be:
= 1 * 305/9
= 33.9 inches
If right arm of replica was not 1 inch, use this answer as reference.
Jack bought a bag of carrots 1 1/3 lbs of cucumbers, 1 1/6 lbs of celery, the total weight of the vegetables was 4 1/2lbs how much did the bag of carrots weigh
Answer: The answer is 2
Step-by-step explanation:
