Which expression has a value that is equivalent to 5n + 13 when n=−5?
A).4n + 8
B).n² + 13
C).n + 8
D).2n + 2
Answer:Option A
Step-by-step explanation:
Because 5(-5) = -25 + 13 = -12
And 4 x n = -20 + 8 = -12
Thus making both equal. Option a is correct
Type a digit that makes this statement true.
153,80(number here) is divisible by 5.
Answer:
5Hope it helps!
Step-by-step explanation:
153805 is divisible by 5
Which pair shows equivalent expressions? PLEASE HELP AND DON"T DO FAKE THINGS AND MAKE THEM UP!!!!
2x+10=2(x-5)
-2(x+5)=2x-10)
-2x-10=-2(x+5)
-2(x-5)=-2x-10
Answer:
The answer would be D I believe.
Step-by-step explanation:
The -2's and the x = 2 so they should be equivalent. But I dont know :/
Answer:
The answer would be C
Step-by-step explanation:
C is the only one that have the same numbers on both sides.
A would be 2x+10=2x-10
B would be -2x-10=2x-10
C would be -2x-10=-2x-10
D would be -2x+10=2x-10
Hello! I just have a simple math equation lol
Please put yout answer in a mixed number =)
If 120 is divided into 3 parts which are proportional to 1, \(\frac{1}{2} \), and \(\frac{1}{6}\), what is the middle part?
\(k+\frac{k}{2}+\frac{k}{6}=120\\\\6k+3k+k=720\\10k=720\\k=72\)
72,36,12
answer: 36
What is the value of the last penguin? Hint: Each value comes from doing something to the previous value.
I NEED HELP GIVING BRAINLIEST
Answer:
I think its $5,700
Step-by-step explanation:
I think its $5,700 because you multiply 3000 by .9 because 9% equals to 0.9. And you would get 2,700 and you add it to 3,000 and you'd get 5,700
Answer:
D.
Step-by-step explanation:
she will pay back the amount the bank loaned her. since its simple interest the nine will just be multiplied by the four years and you would do .36x3000 and you would add 1080 to 3000.
write a real word problem for the algebraic expression m - 9
nine subracte from a number
Answer:
Kelly earns money from babysitting. She saw a cute hat at the mall. She decided to buy the hat for $9. Write an expression that represents the amount of money Kelly has left.
HELP ASAP!!!!
Express your answer as mixed number.
The smallest hummingbird is the Bee hummingbird. It has a mass of 1/4 grams. The mass of a larger type of humming bird is about a 5 times the mass of the mass of the Bee hummingbird.
What is the mass of the humming bird?
The mass of the larger hummingbird is ___ grams.
Answer:
7 1/2 grams
Step-by-step explanation:
The mass of Bee hummingbird is given in the question as = 1 1/2 grams
Mass of the larger humming bird = 5 times the mass of Bee hummingbird
The mass of the larger hummingbird is calculated as:
5 × 1 1/2 grams = 5 × 3/2 grams
= 15/2 grams = 7 1/2 grams
Therefore, the mass of the larger hummingbird is 7 1/2 grams
i need help with these math problems FAST
Answer:
172.5
Step-by-step explanation:
if you take 273.02 (the sum of the withdraws) and 172.5 (the sum of the deposition) and subtract them you get 100.52
Answer:
hi my name is hris
Step-by-step explanation:
Use a calculator to solve the equation.
k/6.8 + 99.8 = 12.1
The solution is k =__.
Answer:
− 596.36
Step-by-step explanation:
-596.36/6.8+99.8=12.1
Answer:− 596.36
Step-by-step explanation:
Pls help me in math, I need this tomorrow, thx :)
Answer: Range and mean = 8 of both
variance of Set X= 4.7
variance of Set Y= 4.6
Step-by-step explanation:
Two sets of data, set X and set Y are given
a.) Range is the difference of the highest value and the lowest value,
Therefore, Range of set X = 12-4=8
Range of set Y = 12-4=8
Now, Mean of a given data set is the average of all the terms present in the given data set
Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8
Mean of set Y= (4+5+7+32+20+12)/10= 8
Therefore, both the data sets has same range and mean.
b.) Standard deviation tells about the variability of the date and is given by,
S.D= σ = √∑ ( X − μ )^2/n
S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7
S.D of set Y= √(16+9+1+0+4+16)/10= √4.6
Variance is the square of S.D, that is, σ^2
Therefore, variance of set X=4.6
variance of set Y= 4.7
c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.
To learn more about S.D and variance,
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Answer: Range and mean = 8 of both
variance of Set X= 4.7
variance of Set Y= 4.6
Step-by-step explanation:
We know
a.) Range is the difference of the highest value and the lowest value,
Therefore, Range of set X = 12-4=8
Range of set Y = 12-4=8
Now, Mean of a given data set is the average of all the terms present in the given data set
Mean of set X= Σxif/n = (4+5+6+7+16+18+24)/10 = 8
Mean of set Y= (4+5+7+32+20+12)/10= 8
also
b.) Standard deviation tells about the variability of the date and is given by,
S.D= σ = √∑ ( X − μ )^2/n
S.D of set X= √(16+9+4+1+0+1+16)/10= √4.7
S.D of set Y= √(16+9+1+0+4+16)/10= √4.6
Variance is the square of S.D, that is, σ^2
Therefore, variance of set X=4.6
variance of set Y= 4.7
c.) The calculated variances of set X and set Y are 4.7 and 4.6 respectively. It implies that the data is more distributed or varied in set X than in set Y. In the other words, data in set Y is more consistent data than of set X.
Ava is buying 30 baseball caps and pays a total of $240. Each cap costs the same amount. Determine whether the situation below represents a direct proportion, and justify your reasoning. If so, find the constant of proportionality.
Pls find the answer winter break is almost ending
90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you...
The answer is 8 so its a direct proportion
I think...
The constant of Proportionality is 8.
What is constant of Proportionality?If the ratio of one variable to the other is constant, then there is a proportional relationship between the two variables. If x and y are in a proportional relationship, then the ratio of y to x is the constant of proportionality. We can also express it as x is to y at times.
Given:
Total Baseball Caps= 30
Total amount of Cap= $240
let the number of caps sold be c.
Then, the equation is
30 c= 240
and, c= 240/30
c= 8
Hence, the constant of Proportionality is 8.
Learn more about constant of Proportionality here:
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My little brother needs to know how (8+9)+3 is equivalent to 8+(9+3) and what is the benefit of using that property.
Answer:
The commutative property let's us know that we can add numbers in any order and the answer will always be the same. 2+4=6 and 4+2=6
33.
Find the value of the expression: (5 + 7)2
a. 24 c. 144
b. 74 d. 54
Answer: a. 24
Step-by-step explanation:
We will simplify using PEMDAS.
Given:
(5 + 7)2
Add:
(12)2
Multiply:
24
a. 24
Hello!
\((5+7)2\)
\(5+7=12\\12*2=24\)
Your answer would be A. 24
Hope this helps!
CORRecT ANSWERS ONLY. What is the value of x?
Answer:
x =5.25
Step-by-step explanation:
Comment
So you want to find x? If the scale factor is 1.75 it means that you multiply whatever dimension on Figure A by 1.75 to get the corresponding dimension on B.
Formula
x = 1.75 * 3
Solution
x = 1.75 * 3
x = 5.25
ANSWER QUICK PLS
NEED IT QUICK
.........
Answer:
X=-6 and X=0
Step-by-step explanation:
I will solve this by factoring.
Factor x(x+6)=0 into to equations: X=0 and x+6=0.
Move the 6 to the other side which will make it negative and their is nothing to do with x=0.
So the final answer is X=-6 and X=0.
Answer:
x = 0 , x = -6
Step-by-step explanation:
Zero product propertyThe equation x(x+6) = 0 can be solved using the zero product property, which states that if the product of two factors is zero, then at least one of the factors must be zero.
So we can set each factor ( "x" and "x+6") equal to 0 and solve for x
Factor #1
x = 0
Factor #2
x + 6 = 0
==> subtract 6 from both sides
x = -6
Checking our workWe can now substitute the values of x into the original equation to check our work
x(x+6) = 0
==> plug in x = 0
0(0+6) = 0
==> simplify addition within parenthesis
0(6) = 0
==> multiply 6 and 0
0 = 0
x(x+6) = 0
==> plug in x = -6
-6(-6 + 6) = 0
==> add -6 and 6
-6(0) = 0
==> multiply -6 and 0
0 = 0
Both values of x satisfy the equation therefore the values of x are indeed -6 and 0
Learn more about the zero product property here :
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20 POINTSSSSSSSSSSSSSSS Veronica is 4 1/2 inches taller than Aracely. Aracely is 56 3/4 inches tall. how tall is veronica A. 61 1/4 B. 60 1/4 C. 61 1/2 D 61
Answer:
A. 61 1/4
Step-by-step explanation:
56.75+4+50=61.25 = 61 1/4
Which of the following exponential functions represents the graph below?
Answer:
C
Step-by-step explanation:
So you should be looking for the right function.
Remember that any number to the power of 0 is by definition 1.
3 * 1 = 3
In the graph you see point (0,3), so what you do is to check for each function if f(0)=3.
So if you substitute x= 0 the result should be 3.
3 * 1 = 3
The two functions that comply with that, are the ones in answers B or C.
In the graph you can also see point (1,6). So if you substitute x= 1 the result should be 6.
The only function that complies with that is in answer C.
This graph represents a linear function
select the equation represented by the graph
Answer: \(y = \frac{1}{4} x - 1\)
Step-by-step explanation: In general, know that the equation for a linear graph is \(y = mx + b\), where
m = \(\frac{rise}{run}\) = the slope of the linear functionb = the y intercept.In our case,
m = \(\frac{rise}{run}\) = \(\frac{1}{4}\)b = -1please help me i will give brainliest to first person to anwser.
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
I need an answer for this pls
Answer:
The GREATER the line the STEEPER the PROPORTIONALITY of X you know you have a constant proportionality when your graph begins at the ORIGIN we can write the equation as y = K x. We find the constant of proportionality by DIVIDING the CONSTANT coordinate by the Y coordinate from an ordered pair.
Step-by-step explanation:
I think I'm not sure you should probably get a second opinion to be sure.
Answer:
The GREATER the line the STEEPER the PROPORTIONALITY of X you know you have a constant proportionality when your graph begins at the ORIGIN we can write the equation as y = K x. We find the constant of proportionality by DIVIDING the CONSTANT coordinate by the Y coordinate from an ordered pair.
(wat she said :))
Rebecca is playing a video game that involves planting and cutting down trees. She moves up an energy level for each tree she plants, and she moves down a level for each tree she cuts. If Rebecca reaches energy level 10, she will earn bonus points.
Rebecca is currently at energy level 4. The results of her next 3 turns are:
Turn 1: 6 trees cut
Turn 2: 8 trees planted
Turn 3: 1 tree cut
2. What is Rebecca's energy level after Turn 1?
Answer: -2
if she cuts 6 trees then her energy level will go from 4 to -2
Step-by-step explanation:
The question is in the image below : )
A corner shelf is in the shape of a triangle. One side measures \(2x^2 + 2x -1\) while another side measures \(5x + x^2 - 3\)
What is the total of two sides? Show all work.
If the perimeter measures\(3x^3 - x^2 - 8x +1\) what is the length of the missing side? Show all work.
If we know that \(x =2\) then what are the lengths of the three sides of the triangle? Show all work.
Is it possible to have these side lengths? Why or why not?
1.The total of two sides is: $6 + 8 = 14$.
2.The missing side has a length of 4.
3.All three inequalities are true, so these side lengths do form a valid triangle.
4. It is not possible to have side lengths.
1. To find the total of two sides of the triangle shelf, we simply add the two given side measurements together.
2. $Perimeter = a + b + c$ where a, b, and c are the lengths of the three sides of the triangle. We are given that the perimeter measures 18, and we know that 6 and 8 are two of the sides, so we can substitute these values into the formula to solve for c:
$18 = 6 + 8 + c$
$18 - 14 = c$
$4 = c$
3. If we know that $a$ = 3, $b$ = 5, and $c$ = 8, we can check if these side lengths form a valid triangle by using the triangle inequality theorem, Therefore, we need to check if:
$a + b > c$
$b + c > a$
$a + c > b$
Substituting in the given values, we get:
$3 + 5 > 8$ (True)
$5 + 8 > 3$ (True)
$3 + 8 > 5$ (True)
4. of $a$ = 2, $b$ = 4, and $c$ = 7 for a triangle. The triangle inequality theorem states that the sum of any two sides of a triangle must be greater than the third side. If we apply this to the given values, we get:
$a + b > c$
$2 + 4 > 7$ (False)
For such more questions on inequalities
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can somebody help me on this
\(\frac{\sec\left(x\right)}{\cos\left(x\right)}-\frac{\sin\left(x\right)}{\csc\left(x\right)\cos^{2}\left(x\right)}\)Use the basic identities to change the expression to one involving only sines and cosines. Then simplify to a basic trig function.
Answer:
1
Step-by-step explanation:
First, convert all the secants and cosecants to cosine and sine, respectively. Recall that \(csc(x)=1/sin(x)\) and \(sec(x)=1/cos(x)\).
Thus:
\(\frac{sec(x)}{cos(x)} -\frac{sin(x)}{csc(x)cos^2(x)}\)
\(=\frac{\frac{1}{cos(x)} }{cos(x)} -\frac{sin(x)}{\frac{1}{sin(x)}cos^2(x) }\)
Let's do the first part first: (Recall how to divide fractions)
\(\frac{\frac{1}{cos(x)} }{cos(x)}=\frac{1}{cos(x)} \cdot \frac{1}{cos(x)}=\frac{1}{cos^2(x)}\)
For the second term:
\(\frac{sin(x)}{\frac{cos^2(x)}{sin(x)} } =\frac{sin(x)}{1} \cdot\frac{sin(x)}{cos^2(x)}=\frac{sin^2(x)}{cos^2(x)}\)
So, all together: (same denominator; combine terms)
\(\frac{1}{cos^2(x)}-\frac{sin^2(x)}{cos^2(x)}=\frac{1-sin^2(x)}{cos^2(x)}\)
Note the numerator; it can be derived from the Pythagorean Identity:
\(sin^2(x)+cos^2(x)=1; cos^2(x)=1-sin^2(x)\)
Thus, we can substitute the numerator:
\(\frac{1-sin^2(x)}{cos^2(x)}=\frac{cos^2(x)}{cos^2(x)}=1\)
Everything simplifies to 1.
Mickey spent 3 1/4 hours practicing his trumpet. He needs to spend 5 1/2 hours to receive an A in band. How many more hours does Mickey need to spend practicing his trumpet?
Please try to give me a step by step explanation ^_^
Answer:
2 \(\frac{1}{4}\)
Step-by-step explanation:
5 1/2 - 3 1/4
1/2 is the same as 2/4
5 \(\frac{2}{4}\) - 3 \(\frac{1}{4}\) = 2 \(\frac{1}{4}\)
Answer: 2 1/4
Step-by-step explanation: 5 1/2 - 3 1/4
5 1/2 = 5 2/4
5 2/4 - 3 1/4 = 2 1/4 So Mickey needs to spend 2 1/4 more hours on his trumpet.
cassie is placing stickers on a page that is 12 inches long and 8 inches wide the sticker are 3 inches long and 2 inches wide
Answer:
To find the greatest number of stickers Cassie can place on a page that is 11 inches long and 8 inches wide without them overlapping, we need to use the same approach as before.
Firstly, we need to calculate the maximum number of stickers that can fit along the length of the page, which is now 11 inches. Since each sticker is 3 inches long, we can fit 3 stickers along the length (11 ÷ 3 = 3 with a remainder of 2).
Next, we can calculate the maximum number of stickers that can fit along the width of the page, which is still 8 inches. Since each sticker is 2 inches wide, we can fit 4 stickers along the width (8 ÷ 2 = 4).
To ensure that the stickers do not overlap, we can only use the full row of 3 stickers from the previous calculation. Therefore, we can place 3 stickers along the length and 4 stickers along the width, giving us a maximum of 12 stickers that Cassie can place on the page without them overlapping.
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
First, find out how much stickers you can put on the long side:
12/3 = 4
Next, find out how much stickers you can put on the wide side:
8/2 = 4
Lastly, calculate them together:
4x4=16
So the answer is 16.
PLEASE HURRY This table shows how many t-shirts of each color Marcus has in his closet. If he chooses a T-shirt without looking, what is the probability that it will be white?
Answer:
3/30
Step-by-step explanation:
3/30 or 1/10 simplified