Answer:
m = 4
Step-by-step explanation:
12m - 15 = 3(2m + 3)
Distribute the 3 on the right side.
12m - 15 = 6m + 9
Subtract 6m from both sides.
6m - 15 = 9
Add 15 to both sides.
6m = 24
Divide both sides by 6.
m = 4
Answer:
m = 4
Step-by-step explanation:
We are given the expression 12m - 15 = 3(2m + 3) and are asked to solve for m.
To solve we need to isolate m, but first, get rid of the parenthesis by distributinh the m by the two numbers inside the parenthesis.
12m - 15 = (3(2m) + 3(3)
12m - 15 = 6m + 9
Now isolate m, add 15 to both sides :
12m = 6m + 24
Subtract 6m from both sides :
6m = 24
Divide 6 by both sides :
m = 4
hii! please help asap. i’ll give brainliest
Answer: Mean
Step-by-step explanation: the mean, is the average or the expected value that measures the central value of a data set. It is found by adding all of the values in the data set and dividing it by the number of values.
A car is driven 600 miles in 12 hours. What is the rate in miles per
hour?
A. .02 mph
B. 38 mph
C. 50 mph
D. 62 mph
Answer:
C. 50 mph
Step-by-step explanation:
Total miles - 600
Total hours - 12
Therefore, 600/12 = 50
Ans: 50 mph
pls mark me brainliest :)
Please help me this is almost due i will mark you brainliest
Answer: B and C
Step-by-step explanation: Hope this help :D
4/5 N= 2/3. N = ?
2/15
5/6
1 1/5
1 7/15
Answer:
N = 5/6
Step-by-step explanation:
4/5 N= 2/3. Find N (solve for N).
Isolate N. To do this, multiply both sides of the equation by (5/4):
(5/4)(4/5)N= (5/4)(2/3)
becomes N = 10/12, or N = 5/6.
plz plz answer this question
NO LINKS :)
Answer:
did you forget a picture?
Step-by-step explanation:
Answer: first post the picture
Step-by-step explanation:
1. Take the picture
2. Post it on Brainly
3. Get your answer
Which expression is equivalent to "4 times the sum of 3 and x"?
A 4(3x)
B, 4x + 3
C, 3 (x+4)
D. 4(x+3)
Answer:
D is the equivalent expression
( 5 X 10^4 ) ( 9.45 X 10 ^12)
Answer:
it's 4.75 × 10^17
brainiest please
drag each equation to the value of the n that makes it true
please see in the photo for the answer , thanks :-)
I WILL GIVE 100 POINTS TO ANYONE WHO CAN HELP ME WITH THIS PROBABILITY QUESTION
Answer:
do u have answer choices or did u come up with anything that can help me out a lil bit
Step-by-step explanation:
mrk me brainliest plz
Solve x^2=4 Someone with the answer
Answer: x = -2, x = 2
Step-by-step explanation:
Solve using square roots!
hey! please help i’ll give brainliest
Answer:
occurred during the same period of time
Step-by-step explanation:
The word "while" indicates two events ("I was studying" and "she was making dinner") happening at the same time.
Luanne and Fiona each made a salt water solution. Luanne mixed 3 cups of salt with every gallon of water. Fiona mixed 2 cups of salt with every 3 gallons water. Which of these statements is true?
Answer:
See Explanation
Step-by-step explanation:
Given
Luanne
[tex]Salt = 3\ cups[/tex]
[tex]Gallon = 1[/tex]
Fiona
[tex]Salt = 2\ cups[/tex]
[tex]Gallon = 3[/tex]
The question is incomplete, as the options are not given.
However, possible comparison that can be made are
(a) The unit amount of salt
(b) Whose solution is more concentrated with salt
(a) The unit amount of salt
To do this, we divide the amount of salt by the number of gallons.
[tex]Unit = \frac{Salt}{Gallon}[/tex]
For Luanne
[tex]Unit = \frac{3}{1}[/tex]
[tex]Unit = 3 cups/gallon[/tex]
For Fiona
[tex]Unit = \frac{2}{3}[/tex]
[tex]Unit = 0.67cups/gallon[/tex]
(b) Whose solution is more concentrated with salt
By comparing the result in (a)
We have:
[tex]Unit = 3 cups/gallon[/tex] --- Luanne
[tex]Unit = 0.67cups/gallon[/tex] --- Fiona
Luanne unit amount implies that there are 3 cups in every gallon of water;
Fiona unit amount implies that there are 0.67 cups in every gallon of water;
[tex]3 >0.67[/tex]
Hence, Luanne solution is more concentrated with salt
To make purple plum paint, the paint store mixes blue and red paint in a ration of 8:5 if a customer needs 65 gallon of paint how many gallons blue and red paint needs to go in the mix
Answer:
Number of gallons of blue paint = 40 gallons
Number of gallons of red paint = 25 gallons
Step-by-step explanation:
We are given the ratio:
Blue paint : Red paint =
8 : 5
Sum of proportion = 8 + 5 = 13
If the customer need 65 gallons of paint,
a) Number of gallons of blue paint needed =
8/13 × 65 gallons = 40 gallons
b) Number of gallons of red paint needed =
5/13 × 65 gallons = 25 gallons
Therefore:
Number of gallons of blue paint = 40 gallons
Number of gallons of red paint = 25 gallons
A kite and its tail total 48 ft in length. the tails is 7 times the length of the body. How long is the kite's tail?
Answer:
42 ft
Step-by-step explanation:
body = x
tail = 7x
x + 7x = 48
8x = 48
Divide both sides by 8
x = 6
Tail
7x = 7(6)
7x = 42
I will mark branliest
Answer:
B
Step-by-step explanation:
(5-2)/(x-1) = 3
x=-2
Answer:
D. 0
Step-by-step explanation:
the slope of the line is negative reciprocal to the slope of the other line 1/3=> -3
(5 - 2)/(x - 1) = -3
=> 3/(x - 1) = -3
=> x - 1 = -1
=> x = 0
√(4²×49)
__________________________________________
notacion cientifica de 81,300
Answer:
hola!!thanks for the fact 81,300 from scientific notation
The management of a department store has decided to enclose an 800 sq. ft.area outside the building for displaying potted plants and flowers. One side willbe formed by the exterior wall of the store, two sides will be constructed of pineboards, and the fourth side that is opposite to the wall will be made of galvanizedsteel fencing. If the pine board fencing costs $6/ft. and thesteel fencing costs $3/ft,determine the dimensions of the enclosure that can be erected at minimum cost
Answer:
Dimension of the enclosure is 56.56 ft * 14.14 ft
Step-by-step explanation:
Given -
Let us suppose that x is the length of steel fence and y is the length of one side of pine boards
We know that - xy = 800.
y = 800/x
Let us say that C is the cost of fence
= 3x + 6(2y) = 3x + 12y = 3x + 12(800/x)
C = 3x + 9600x-1, x > 0
C' = 3 - 9600x-2 = (3x2-9600)/x2
C' = 0 when 3x2 = 9600
x2 = 3200
x = √3200 ft ≈ 56.56 ft
So, the cost is minimized when x ≈ 56.56 ft and y = 800/x ≈ 14.14 ft
I need this answered ASAP!
Answer:
29 sq.inches
Step-by-step explanation
2x2+5x3+5x2=29sq .inches
If the circumference of a circle is 10pi inches what is the area, in square inches of the circle?
A 10pi
B 25pi
C 50pi
D 100pi
Answer:
C 50pi
Step-by-step explanation:
Now, 2pi*r = 10pi. Thus 2r = 10. Thus, as the diameter of the circle is the diagonal of the square, the side of the square = = --> Area = = 50 sq. units
Answer:
b
Step-by-step explanation:
what is this can someone please help ?
Answer:
The answer is most likely A
Hope this helps if t does please consider giving brainliest
Cya on the next one!
Step-by-step explanation:
1. F(-5)=2x+1
2. F(-4)=2x+1
3. F(1)=2x+1
4. F(3)=2x+1
5. F(5)=2x+1
Answer:
1. F(-5) = -9
2. F(-4) = -7
3. F(1) = 3
4. F(3) = 7
5. F(5) = 11
Step-by-step explanation:
For each problem, F(x) is replaced with x.
An example is F(-5) = 2x + 1 (your first question).
To solve this, you replace x with -5.
This creates F(-5) = 2(-5) +1
We just simplify by multiplying -5 by 2 and then adding 1.
-5 times 2 equals -10. -10 plus 1 equals -9.
Your final answer for this example problem would be F(-5) = -9.
This applies to all problems as such -- F(x) where x inside the parentheses replaces all x values in the equation.
Hope this helped!!
In a geometric sequence, the 1st term is 8 and the 3rd term is 72. Given a positive common ratio, find the 7th term.
Answer:
see explanation
Step-by-step explanation:
The n th term of a geometric sequence is
= a
where a is the first term and r the common ratio
Both a and r have to be found
Given a₃ = - 2, then
ar² = - 2 → (1)
Given a₇ = - 32, then
a = - 32 → (2)
Divide (2) by (1)
= , that is
= 16 ( take the fourth root of both sides )
r = 2 ← common ratio
Substitute r = 2 into (1)
a × 2² = - 2, that is
4a = - 2 ( divide both sides by 4 )
a = - ← first term
Hence
= - ← explicit formula
and
= - × = - 0.5 × 512 = - 256
Step-by-step explanation:
Tim buys a jacket at $120.00. If he buys it during the Christmas sale,He will pay only 102.00. Calculate the percentage discount. Plz help and explain how to solve it l
Answer:
15% discount
Step-by-step explanation:
1 - (102/120)
1 - 0.85 = 0.15 = 15%
A. Graph A
B. Graph B
C. Graph
D. Graph D
Answer:
Graph C
Step-by-step explanation:
Keisha and her family travel 227 miles on Monday and 337 Miles on Tuesday her brother drives 1/4 of the distance they travel on Monday and Tuesday and her mom drives the rest her mom also drives 150 miles on Wednesday.
How many more miles does her mom drive then her brother in all?
Answer:
her mother drives 142 miles more than her brother.
Step-by-step explanation:
227 + 337 = 564 miles in total driven
¼ of 564 miles = 136 miles (what her brother drives of the 564 miles)
564 - 136 = 428 left
her mother drives 428-150 miles from Wednesday = 278
278-136=142
(plz mark branliest)
On a trip, Gavin bought a ping-pong racket for $33. With the tax, he paid $36.96. What is the tax rate, in percent?
Answer:
12%
Step-by-step explanation:
Tax = 36.96 - 33 = 3.96
Tax rate = 3.96/33 * 100 = 12%
Sue and Bill share a 16-ounce box of cereal. By the end of the week, Sue has eaten 5 8 of the box, and Bill has eaten 1 4 of the box of cereal. How many ounces are left in the box?
Answer: 2 ounce
Step-by-step explanation:
Given
16 ounce of the box is shared by Sue and Bill
Sue has eaten [tex]\frac{5}{8}[/tex] of the box
Bill has eaten [tex]\frac{1}{4}[/tex] of the box
total cereal eaten by them is
[tex]\Rightarrow \dfrac{5}{8}+\dfrac{1}{4}=\dfrac{5}{8}+\dfrac{2}{8}\\\\\Rightarrow \dfrac{7}{8}[/tex]
So, they have eaten this much of the box. Amount left in the box is
[tex]\Rightarrow 1-\dfrac{7}{8}\\\\\Rightarrow \dfrac{1}{8}[/tex]
In ounce it is
[tex]\Rightarrow 16\times \dfrac{1}{8}\\\\\Rightarrow 2\ \text{ounce}[/tex]
Determine the length of the chord that is 8 inches from the center of a circle with a radius of 17 inches?
Answer:
30 in
Step-by-step explanation:
See attached image.
The length of AB is 17 (radius). The length of AC is 8 (given info).
AC splits segment BD in half, so point C is the midpoint of segment BD.
AC is perpendicular to the chord, so triangle ABC is a right triangle. You now have a right triangle with a leg of length 8 and hypotenuse of lenght 17.
The Pythagorean Theorem: (leg)^2 + (leg)^2 = (hypotenuse)^2.
[tex]8^2+(BC)^2=17^2\\\\64+(BC)^2=289\\\\(BC)^2=225\\\\BC=\sqrt{225}=15[/tex]
That's half the length of the chord, so double that to get 30 inches for the full length of the chord BD.
If 198,000,000 is written in the form 1.98 x 10".
what is the value of n?
Answer:
19.8
Step-by-step explanation: