Answers
=======================================================
Explanation:
Think of x as a placeholder for a number. For me, I tend to think of it as a box. It's handy that the letter x is part of box, to help make that connection better. We have some box and inside the box goes a number.
If we multiply 5 by whatever is in the box, we can write it like [tex]5*\square[/tex]
Then let's say we fill that box with the value 7. We would then have [tex]5*\boxed{7}[/tex]
If we put 3 in the box instead we'll have [tex]5*\boxed{3}[/tex] and so on
Unfortunately the box symbol isn't something we could easily write on a keyboard, so we go with x instead to make life simpler.
--------------------------
So far we've shown that "5 times a number" turns into 5*x or just 5x.
From here we subtract off 3 to get 5x-3 as the final answer. Whatever the result of 5x is, we subtract off 3.
The answer would not be 3-5x since this means "subtract 5x from 3". The order of subtraction matters. In general, A-B is not the same as B-A.
Related Questions
C. 2500 = -(x) + 1243
Answers
Hank has $8 in dimes and nickels. He has a total of 105 coins. How many nickels does he have?
Answers
Answer:
50 nickelsStep-by-step explanation:
Let the number of nickels be n and dimes be d.
Consider:
n = 5¢, d = 10¢, $8 = 800¢We have equations below:
d + n = 10510d + 5n = 800Multiply the first equation by 10 and subtract the second equation to eliminate d and solve for n:
10d + 10n - 10d - 5n = 1050 - 8005n = 250n = 50He has 50 nickels
evaluate 13 - 0.75y + 8x when w =12 and x=1/2
Answers
Note: I am assuming you meant to write the value of y = 12 instead of w = 12.
So, I am assuming y = 12
Answer:
The value of 13 - 0.75y + 8x when we substitute y = 12 and x = 1/2 will be: 8
Step-by-step explanation:
Given the expression
[tex]13\:-\:0.75y\:+\:8x[/tex]
Given
y = 12x = 1/2substituting y = 12 and x = 1/2 in the expresion
[tex]13\:-\:0.75y\:+\:8x=13\:-\:0.75\left(12\right)\:+\:8\left(\frac{1}{2}\right)[/tex]
[tex]=13-0.75\cdot \:12+8\cdot \frac{1}{2}[/tex]
[tex]=13-9+4[/tex]
[tex]=8[/tex]
Therefore, the value of 13 - 0.75y + 8x when we substitute y = 12 and x = 1/2 will be: 8
The solutions to the inequalityys 2x - 4 are shaded on
the graph. Which point is a solution?
O (-1,1)
O (1, -1)
O (3, 2)
O(2,3)
Answers
Answer:
(3,2)
Step-by-step explanation:
3,2 is the answer...hope you can understand
The point which is the solution of the inequality y ≤ 2x - 4 is,
⇒ (3, 2)
What is Coordinates?A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.
We have to given that;
The inequality is,
⇒ y ≤ 2x - 4
Now, From the options;
Option 3;
Point = (3, 2)
Put x = 3, y = 2;
⇒ y ≤ 2x - 4
⇒ 2 ≤ 2 × 3 - 4
⇒ 2 ≤ 6 - 4
⇒ 2 ≤ 2
Thus, The point which is the solution of the inequality y ≤ 2x - 4 is,
⇒ (3, 2)
Learn more about the coordinate visit:
https://brainly.com/question/24394007
#SPJ7
what is the simplest form of the ratio 40:16
Answers
Answer:
5/2
Step-by-step explanation:
christmas
Answer:
That'd be 50.
Question 4 How many integer numbers between 0 and 9999 are there that have exactly one digit 1 and exactly one digit 3
Answers
Answer:
768 numbers
Step-by-step explanation:
Given
[tex]Digits = \{0,1,2,3,4,5,6,7,8,9\}[/tex]
Required
Number of digits between 0 ad 9999 that have one 1 and one 3
There are a total of 4 digits that make up any of the numbers in 0 to 9999 with the given condition
This can be represented as WXYZ
Digit 1 can occupy any of the 4 positionsDigit 3 can occupy any of the 4 - 1 positionsThe remaining 8 digits will occupy the last 2 positions in the following ways:
The first of the 8 digits can be selected from any of [tex]\{0,2,4,5,6,7,8,9\}[/tex] i.e. 8 waysThe second can be selected from any of [tex]\{0,2,4,5,6,7,8,9\}[/tex] i.e. 8 waysSo, the total number of selection is:
[tex]Total = 4 * (4 - 1) * 8 * 8[/tex]
[tex]Total = 4 * 3 * 8 * 8[/tex]
[tex]Total = 768[/tex]
p l e a s e h e l p m me !!!
Answers
Answer:
C
Step-by-step explanation:
Answer:
i think its c
Step-by-step explanation:
i tried my hardest
I don't understand this question. I was hoping one of you could help.
Answers
Answer:
happy new year
Brainless if answer correct
Answers
Answer:
3 1/5 inches
Step by Step Explanation:
4/5 * 4 = 16/5
16/5 as a mixed number is 3 1/5.
The answer is 3 1/5 inches hope this helps!!
Answer:
i would say 3 1/5
Step-by-step explanation
what is forthy-eight thousandths as a decimal
Answers
0.048
If i am wrong let me know
Question 12 of 25
Given any triangle ABC labeled as shown, the law of sines states:
B
Answers
9514 1404 393
Answer:
A
Step-by-step explanation:
The law of sines tells you the sine of the angle is proportional to the length of the opposite side. The usual convention is that 'a' is opposite 'A', and the same for other letters.
Find the area of this triangle.
7
19°
12
? ] square units
Round to the nearest tenth.
Answers
Answer:
area is 13.7^2
Step-by-step explanation:
7×12=84
84÷2=42
sin(19°)=0.3256
42×0.3256=13.7
Answer:
the area is 13.7^2
Step-by-step explanation:
can you please add me on brainlist
How do i stay focused in math?
Answers
Answer:
You can turn off your phone or download an app the controls your screen time,
you can open your windows and let in some fresh air
you can eat some snacks
i don't know what else
What is the final reason???? I will give brainliest!
Answers
18% is what number of 63?
Answers
Answer:
[tex] 18 \%\: of \: x = 63 \\ \frac{18}{100} x = 63 \\ x = \frac{63 \times 100}{18} \\ x = 350[/tex]
350 is the right answer.Answer:
350
Step-by-step explanation:
To figure out the number, divide 63 by 18%
63/0.18 = 350
You can check by doing the opposite operation with your answer:
350 · 0.18 = 63
A large chess tournament begins with 256 players. After each round. . half of the players remain.
Answers
I cant see the image very well. Could you explain your question?
Find the fraction and the ratio of No. Of prime numbers to the numbers up to 50
Answers
Answer:
3/ 10
Step-by-step explanation:
Count of numbers up to 50 = 50
Prime numbers up to 50 :
{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47}
Count of prime numbers up to 50 = 15
Hence, ratio of prime numbers to all numbers ;
15 : 50
3 / 10
Catron evaluates the expression (-9)(2 2/5 using the steps below
Answers
Answer:
The answer is "-21.6".
Step-by-step explanation:
In the given question, there is a mistype in the equation so, its correct equation can be defined as follows:
Given:
[tex]\to (-9) (2 \ and \ 2/5) = (-9)(2+ \frac{2}{5})[/tex]
[tex]= (-9 \times 2 )+ (-9\times \frac{2}{5})\\\\= (-18 )+ ( -\frac{18}{5})\\\\= -18 -\frac{18}{5}\\\\= \frac{-90-18}{5}\\\\= - \frac{108}{5}\\\\=- 21.6[/tex]
OR
[tex]\to (-9)(2+ \frac{2}{5})= (-9) (\frac{10+2}{5})[/tex]
[tex]= (-9) (\frac{12}{5})\\\\= (-9) (2.4)\\\\=-21.6[/tex]
The numbers 2 and 7 are factors of 42. Which statement is true?
A.
The number 42 is neither a multiple of 2 or 7.
B.
The number 42 is a multiple of 7 but not 2.
C.
The number 42 is a multiple of both 2 and 7.
D.
The number 42 is a multiple of 2 but not 7.
Answers
The number is a multiple of 2 and 7
Pls help will give brainiest
Answers
Answer:
2
Step-by-step explanation:
1. Two ski rental companies have different pricing systems. Company A charges a flat fee of $10 plus $5 per hour. Company B does not charge a flat fee but charges $7 per hour rented. After how many hours do both companies charge the same amount?
a. Fill in the equation for the cost of renting skis from Company A.
y = ____ + _____ x
b. Fill in the equation for the cost of renting skis from Company B.
y = _____ x
c. Circle the best method for the cost of renting skis from Company B.
Graphing Substitution Elimination
d. Solve the system using the method you chose.
Rewrite your two equations here. -----------
After ______ hours, both companies charge _____.
e. Check your answer.
Answers
Answer:
1a. y = $10 + $5x (With $10 as the flat fee, Company A charges $5 an hour, so the equation should be $10, base, plus $5x, the amount charged after you paid the flat fee.)
1b. y = $7x (Every hour $7 translates to $7x as the total. Nothing more, nothing less.)
1c. Substitution (This will allow us to substitute in one of the equations with y, since the question asks for the same amount charged, with the other equation.)
1d. $10 + $5x = $7x
$7x - $5x = $10
$2x = $10
x = [tex]\frac{\$10}{\$2}[/tex]
x = 5
Therefore, after 5 hours, both companies charge $35 dollars.
1e. To check whether this is correct, let's sub in the amount of hours for both equations.
For Company A:
y = $10 + $5x
y = $10 + $5(5)
y = $35
For Company B:
y = $7x
y = $7(5)
y = $35
Since both are equal to $35, we can definitively say the answer is 5 hours.
Step-by-step explanation:
Hope this helped!
A number that is being divided by another number is called the
Answers
Answer:
dividend
Step-by-step explanation:
5. The length of two sides of a right triangle are leg: 9
m and hypotenuse: 16 m. Find the length of the
third side. Round to the nearest tenth if necessary.
A. 28.8 m
B. 13.2 m
C. 104 m
D. 14.4 m
Answers
Answer:
B. 13.2 m
Step-by-step explanation:
Using the Pythagorean theorem, which is a^2 + b^2 = c^2, you can substitute in 9 for a and 16 for c. This puts it at 9^2 + b^2 = 16^2, which equals 81 + b^2 = 256. Subtract 81 from both sides to get b^2 = 175. Take the square root of both sides to get b = sqrt 175. The sqrt of 175 rounded to the nearest tenth is 13.2
A tennis ball is in a cylindrical container. The ball has a radius of 5 inches and the cylinder has a height of 8 inches. How much wasted space (air) is there in the container? The tennis ball touched the sides, top, and bottom of the container.) Give your answer in terms of pi. *
Answers
Answer:
104.7 in^3
Step-by-step explanation:
Step one:
given data
The ball has a radius of 5 inches and
the cylinder has a height of 8 inches
Step two:
The volume of the cylinder
[tex]v= \pi r^2 h[/tex]
substitute our data
[tex]v= 3.142*5^2*8\\\\v=628.4in^3[/tex]
The volume of the ball
[tex]v=4/3 \pi r^3[/tex]
substitute our data
[tex]v= 4/3 *3.142*5^3\\\\v= 523.7 in^3[/tex]
The space will have a volume of
=628.4-523.7
=104.7 in^3
i’ll give you brainlest but please help answer this
Answers
Answer:
X=9
Step-by-step explanation:
X/ Y=X/Y
3/18=x/54
next is simple math
X=9
x = 9.
I hope this helped!
I Would appreciate it if you gave me a Thanks and a brainliest (:
Joséphine noticed that out of 10 e-mails she
of advertisements she will receive in the next100 e-mails?
evedl were
nents. WVhat can she predict about the numbe
O She will receive 7 advertisements
O She will receive 10 advertisements
O She will receive 70 advertisements
O She will receive 90 dvertise ements
Answers
Answer:
The answer is C
I did the quiz on edge
what expression means the same as subtract 3 from 7 then multiply by 4?
Answers
Answer: 3 - 7 x 4
Step-by-step explanation:
7 - 3 = 4 x 4 = 16
Type SSs, SAS, ASA, SAA, or HL
to justify why the two larger triangles are
congruent.
Answers
Answer:
HL.
Step-by-step explanation:
Both of them are right triangles.
Answer:
SASStep-by-step explanation:
WILL GIVE BRAINLIEST TO WHOEVER GIVES AN EXPLANATION WITH CORRECT ANSWER! Look at the pic
Answers
Answer:
Step-by-step explanation:
1) Not proportional.
2)Proportional
[tex]\frac{28}{20} = \frac{7}{5}\\\\\frac{42}{30} = \frac{7}{5}\\\\\frac{56}{40} = \frac{7}{5}\\\\\frac{70}{50} = \frac{7}{5}[/tex]
So, it is proportional
y = (5/7) times x
Answer:
im a dding this so u
Step-by-step explanation:
can give brainliest to the guy lol
Which statement is true of the function f(x) = -3^sqrt x ? Select three options.
The function is always increasing.
The function has a domain of all real numbers.
The function has a range of {y|–infinity < y < infinity }.
The function is a reflection of y = .3^sqrt x
The function passes through the point (3, –27).
Answers
Do you mean [tex]f(x)=-3^{\sqrt x}[/tex], as in the negative of 3 to the power of √x ? Or [tex]f(x)=-\sqrt[3]{x}[/tex], as in the negative cube root of x ?
If you mean [tex]f(x)=-3^{\sqrt x}[/tex], then, going through each option:
• no: the square root component is defined only for x ≥ 0, for which we have √x ≥ 0 and hence f(x) < 0 for all x in the domain. √x is an increasing function, so the powers of 3 get successively larger, so f(x) would be always decreasing;
• no: as mentioned above, the domain would be all non-negative numbers;
• no: at minimum, x = 0 which gives f (0) = -3⁰ = -1, and because f(x) is decreasing over its entire domain, the range would be {y | y ≤ -1};
• no: again, a bit of ambiguity, but assuming you mean to say here [tex]y=3^{\sqrt x}[/tex], yes, f(x) would be a reflection of y across the x-axis;
• and finally, no: [tex]f(3)=-3^{\sqrt3}\approx-6.705[/tex]
so that only the fourth option would be true.
On the other hand, if you mean [tex]f(x)=-\sqrt[3]{x}[/tex], then:
• no: the function is always decreasing;
• yes: the domain is all real numbers;
• yes: the range is {y | -∞ < y < ∞};
• yes: f(x) is a reflection of y=∛x, also about the x-axis; and
• no: f (3) = -∛3 ≈ -1.442
I suspect you mean the second case, since it's a bit simpler to approach.
Answer:
b,c,d
Step-by-step explanation:
Just took the test