Answer:
Option C
Step-by-step explanation:
Option A:[tex]4(-1)+9=20\\\\-4+9=20\\\\\boxed{5\neq 20}[/tex]Option B:[tex]-4(-1)-5=-15\\\\4-5=-15\\\\\boxed{-1\neq -15}[/tex]Option C:[tex]-3(-1)+15=18\\\\3 + 15 = 18\\\\\boxed{18=18}[/tex]
Option C is the correct answer.
Option D:[tex]-5(-1)-15=-22\\\\5-15=-22\\\\\boxed{-10\neq -22}[/tex]
Hope this helps.
For the value of x = - 1, the correct equation is,
⇒ - 3x + 15 = 18
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The value of x is,
⇒ x = - 1
Now, Substitute the value of x in all equations and check the correct equation.
For equation 3;
⇒ - 3x + 15 = 18
Substitute x = - 1 ;
⇒ -3×-1 + 15 = 18
⇒ 3 + 15 = 18
⇒ 18 = 18
Thus, The correct equation is,
⇒ - 3x + 15 = 18
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Letha has 7 coins in her hands totaling $0.50
What are the coins?
Letha has blank nickels and blank dimes.
Answer:
7.50$
Step-by-step explanation:
there you go
Answer:
Letha has 3 dimes and 4 nickels
Step-by-step explanation:
3 x 10 = 30 + 4 x 5 = 50 cents
The area of a square shaped yard is 201.5 ft2. Which measurement is closest to the side length of this yard in feet?
Answer:
a = 14.19 feet
Step-by-step explanation:
Given that,
The area of a square shaped yard is 201.5 ft²
We need to find the side length of this yard in feet.
The area of a square shaped object is given by :
A = a², a is the side length of the object
Put A = 201.5 ft² in above formula,
[tex]201.5=a^2\\\\a=\sqrt{201.5 } \\\\a=14.19\ \text{feet}[/tex]
So, the side of the square yard is 14.19 feet.
A music store marks up the instruments it sells by 30%. If the price on a trumpet says $104. How much did the store pay for it?
Answer:
A. $ 58.50
B. $ 80
C. No, it did not mark up 30%
Step-by-step explanation:
Since,
A. We have,
Mark up percentage = 30%
Actual price = $ 45,
B. We have,
SP = $ 104,
C. We have,
AP = $ 75,
SP = $100,
Thus, mark up percentage =
= 33.33 %
Hence, store did not mark up the price by 30%.
Answer:
$ 72.80
Step-by-step explanation:
30% of 104 = 0.30 * 104
= $ 31.20
Money paid by the store = 104 - 31.20
= $ 72.80
Ye Olde Coffee Shop sells Colombian Coffee for $9.25 per pound. Brazilian Coffee sells for $7.75 per pound. The
management wishes to mix 6 pounds of Colombian Coffee with an amount of Brazilian Coffee so that the mixture sells for $8.25 per pound.
Pounds Price per Pound
Total Price
Columbian
Brazilian
Mixture
1. How many pounds of Brazilian Coffee should be mixed with 6 pounds of Colombian Coffee to get
mixture?
Answer:
12 pounds
Step-by-step explanation:
Colombian Coffee sells for $9.25 per pound. Brazilian Coffee sells for $7.75 per pound.
The management wishes to mix 6 pounds of Colombian Coffee with an amount of Brazilian Coffee so that the mixture sells for $8.25 per pound.
Hence:
Let the number of pounds of Brazilian coffee be represented by = a
$9.25× 6 + $7.75 × a= $8.25 (a + 6)
55.5 + 7.75a = 8.25a + 49.5
Collect like terms
8.25a - 7.75a = 55.5 - 49.5
0.5a = 6
a = 6/0.5
a = 12 pounds
Therefore, 12 pounds of Brazilian Coffee should be mixed with 6 pounds of Columbian nuts
A rectangular box is 8 inches long, 10 inches wide, and 6 inches tall.
What is the approximate length of its longest diagonal?
Answer:
480
Step-by-step explanation:
If you take length times width times height so it'll be 8 times 10 = 80 times 6 =480
YOOO HELP‼️
What is the slope of the line represented by the equation -52 + 2y = 10?
Answer:
5/2
Step-by-step explanation:
Use PEMDAS to solve the equation in y=mx+b form.
Add 5x on each side of the = sign (which cancels on left side, and add on right)
Your equation should look like this: 2y=5x+10
Next, you're going to divide the whole equation by 2, to get y by itself
which equals y=5/2x+10
M=slope
B= y-intercept
I hope it’s clear enough but can some please help
Answer:
b
Step-by-step explanation:
hope this helps you! have a good day!
sssssssssssssssssssssssssssssssssssssssssSimplify: 2(2x + 8)
Answer:
4x+16
Step-by-step explanation:
Use the distributive property
2×2x=4x
2×8=16
Simplified: 4x+16
Hope this helps! :) Plz mark as brainliest
6=1/12v solve each equation. Check your solution
Answer:
112v=6 1 12 v = 6 . 12
Step-by-step explanation:
The solution to the equation is v = 72.
We have,
To solve the equation 6 = (1/12)v, we can follow these steps:
Multiply both sides of the equation by 12 to eliminate the fraction:
6 * 12 = (1/12)v * 12,
72 = v.
Therefore, the solution to the equation 6 = (1/12)v is v = 72.
To check this solution, we substitute v = 72 back into the original equation:
6 = (1/12)(72),
6 = 6.
Since both sides of the equation are equal, we can confirm that the solution v = 72 is correct.
Thus,
The solution to the equation is v = 72.
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i need help.pleaaseeeeeeeeee with the whole thing ..only two questions
Answer:
a= T=d/r b= 4.5hours
Step-by-step explanation:
PLEASE HELP ME!!!
Which equation represents the line that passes through the points (–3, 7) and (9, –1)?
y = negative two-thirds x + 5
y = negative two-thirds x minus 7
y = two-thirds x minus 7
y = two-thirds x + 5
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex]y = - \frac{2}{3}x + 5 \\ [/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Thus the correct answer is the first one.
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Let me know if u want explanation buddy..
The product of two factors is 3,500. If one of the factors is 70, which is the other factor?
A.
50
B.
80
C.
500
D.
700
✨Answer:✨
A. 50
✨Step-by-step explanation:✨
3,500 ÷ 70 = 50
Check if answer is correct:
70 x 50 = 3,500
six times a number decreased by 8 is less than five times the number plus 21
Answer:
6 ( or any number that isn't a common multiple of 5 and 6 ) you should probably double-check just in case.
Step-by-step explanation:
Question = 6x - 8 < 5x +21
so we know that the product of 6x must be divisible by 6 and 5x must be devisable by 5. so the first factor of 6 is 6 so:
(6 x 6) - 8 < (5 x 6) + 21
36 - 8 < 30 + 21
28 < 51
so x = 6
Honestly, any number would work because 6x is obviously more than 5x, but since for 6x you subtracting 8 and for 5x you adding 21 the answer will always be 6x - 8 < 5x + 21. Unless you use a common multiple of 6 and 5 as your x because then six times that number will always be more than 5 times that number. So for example 30 is a common multiple of 6 and 5 so:
(6 x 30) - 8 is more than (5 x 30) + 21
180 - 8 is more than 150 + 21
172 is more than 171
hope that helps : )
Representing the problem using mathematical equation, the inequality which represents the scenario is n < 29
Let the number be represented as n :
6n - 8 < 5n + 21
We can then solve for n
6n - 5n < 21 + 8
n < 29
Therefore, the inequality expression which represents the possible values of n for which the expression is true is n < 29
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Help me please !!!!!!!!!!!!
2 multiplied by 7 1/3
Answer:
44/3
Step-by-step explanation:
2 * 22/3
44/3
Or, 14 2/3
Which has a greater slope, a horizontal line or a vertical line?
Answer:
A horizontal line has slope zero since it does not rise vertically (i.e. y1 − y2 = 0), while a vertical line has undefined slope since it does not run horizontally (i.e. x1 − x2 = 0).
Answer:
A horizontal line has a greater slope than a vertical line
4x + 2(2x - 3) = 8(x - 1)
Answer:
No solution
Step-by-step explanation:
4x + 2(2x - 3) = 8(x - 1)
4x + 4x - 6 = 8x - 8
8x - 6 = 8x - 8
0 = -2
There is no value of x makes the equation true.
Write the equation for the following word problem: Lanessa wanted to
take dance lessons(d) at the community center. If there was a one time
fee of $20 and then a $10 fee per lesson, then how many lessons could
she take for $180?
If you are good at math please do this. IF U DONT DO IT AND PUT AN ANWSER SAYING YOU DONT KNOW IM REPORTING YOUR ACC
Answer:
(2, 1 )
Step-by-step explanation:
Assuming the centre of dilatation is the origin.
Then multiply each of the coordinates of B by 0.5 , that is
B(4, 2 ) → (4(0.5), 2(0.5)) → (2, 1 )
what is the greatest three-digit multiple of 33 that can be written using three different digits?
Please help me!!!
Answer:
957Step-by-step explanation:
The largest three-digit multiple of 33 * 30 is 990, which uses only two different digits. Now we work backwards: Subtracting 33 once gives 990-33=957, which has three different digits. Therefore, our answer is 957
957 is the greatest three-digit number which is multiplied by 33.
What are digits?A numerical digit is a single sign that can be used alone or in combination to denote a number in a positional numeral system.
A digit is a component of a set that, when put together, forms a numerical system.
Examples of digits include 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.
If we multiply 33 by 31
It gives 1023 which is a four-digit number.
Now trying to multiply less than 31
By 30
33 × 30 = 990 but here two digits are the same.
By 29
33 × 29 = 957 and all three are different.
Hence "957 is the greatest three-digit number which is multiplied by 33".
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Please answer this question
Answer:
A
Step-by-step explanation:
Its A!!!
Since it says the scale is 100 km for each cm, and the cities are 2.9 cm away on the map you just multiply that by 100 to get 29 km! Hope this helps!
rotate the triangle through 180 about the origin
I don't exactly know what you're asking but if you need help with rotating a shape 180 degrees here is the little "formula":
(x, y) -> (-x, -y)
Find the value of x.
140°
10x
O A. 18
O B. 4
C. 14
D. 9
The amount of water in a pool varies directly with the amount of time it is filling up. The pool has 2,900 liters of water after 15 seconds. How many liters of water will the pool contain after 45 seconds?
Answer: 24kg
Step-by-step explanation:
What is the best first step in solving the equation below.
3x - 5 = 75 + 11
A Add 11 to both sides
B Divide by 7x on both sides
C Subtract 3x on both sides
D Add 3x to both sides
Answer:
It’s C
Step-by-step explanation:
please answer this before tomorow please guys help me help me please
Answer:
3456
Step-by-step explanation:
5555
Answer:
which grade are you
Step-by-step explanation:
skskakksksksks
How do i solve 3x/3 = 6/3
Answer: 2=x
Step-by-step explanation: Multiply both sides by three then divide both sides by three.
3x=6
x=2
Answer:
x = 2
Step-by-step explanation:
3x/3 = 6/3
cross-multiply:
9x = 18
divide both sides by nine:
x = 2
When Aidan had his picture taken, the photographer charged a $10 sitting fee and $6 for each sheet of pictures purchased.
What is the independent varibale?
Answer:
the independent variable is the each pictures becasue you don't know how many photo he took.
Dovecreek Manufacturing has two facilities that manufacture tents. Each facility produces both the Expedition tent and the
Excursion tent. The daily production labor hours for each department are given in the following two matrices.
Delores Plant
Cortez Plant
Expedition Excursion
Expedition Excursion
Sewing
45
60
Sewing
54
72
(
1
1
Assembly
72
108
Assembly
63
104
Which of the following matrices shows the combined daily labor hours for each department from both facilities?
OA.
99 132
135 167
ОВ.
105 180
126 212
C.
117 168
117 176
99 132
135 212
Answer:
dts on sundar
Step-by-step explanation:
Daud can jog 4 miles in 75 minutes. What is David's jogging rate per hour?
Answer:
3 mph
Step-by-step explanation:
1 hour = 60 minutes.
4 miles/ 75 minutes = x miles / 60 minutes
240 = 75 x
x = 3.2
3.2 miles per hour