Answer:
-18
Step-by-step explanation:
I just had this question and the answer is -18 because 3x+21-21=-31-21 to get - 18
Answer:
A). X = -18
Step-by-step explanation:
-18 times 3 + 21 is -33. When you have a hard time figuing out these sort of problems, I suggest you should get each choice that is given. Put one of these choices one at a time in the equation and see if it will equal -33. To do this, you put the number and substiture it for x. This is an easy way of solving this problem especially when it is multiple choice.
4. A treadmill is priced at $280.50. There is an 8% sales tax rate. What is the sales tax of the treadmill in dollars and cents?
Answer:
Step-by-step explanation:
280.50 * 8%
280.50 * .08%
=22.44 (sales tax rate)
Total= $302.94
Will make brainliest!
Please explain what I did wrong , and please give me the correct answer thank you :)
-35x+70y=29
10x-20y=-10
Answer:
-25x + 50y = 19
Step-by-step explanation: So sorry if I'm wrong
Answer:
x=3
y=2
Step-by-step explanation:
you can either use substitution or elimination method
I find substitution method better
substitute x with 3 and in this method u use one of the equation
10(2)-20y=-10
20-20y=-10=2
y=2
now use y=2 with the same equation
10x-40=-10=30
10x=30
x=3
therefore
x=3
y=2
what is the greatest possible integer solution of the inequality 2.808x <24.111?
Answer
Step-by-step explanation:
Write an expression that matches the difference between 8 forty-sevens and 5 forty-sevens.
(8 x 47) - (5 x 47)
Also The difference is 141
Help!!!!!! I need help asapppopopppppp
Answer:
9072
Step-by-step explanation:
The owner of Animal Lovers Pet Shop has a total of 153 parakeets in 3 cages. Could each cage hold the same number of parakeets? Explain how you found your answer.
Answer:
Sample Response: When you divide 153 by 3, there is no remainder. This means that 3 goes into 153 evenly and so there can be the same number of parakeets in each cage.
Answer:
he is right
Step-by-step explanation:
Drew runs an 8 mile race. How many km has he run? Use the conversion factor 1 km=.62 miles.
Answer:
12.8 is how many kilometers drew runs
Answer:
0.62*8=4.96
happt to help
Ms. Smith bought 30 boxes of pencils at the beginning of the year. Each box costs $2.15 including tax. 6/15 of the boxes she bought have been used. How much money did she spend on the remaining boxes?
Answer:
She spent $38.7 on the remaining boxes.
Step-by-step explanation:
total number of boxes of pencil bought by Ms. Smith, = 30 boxes
cost of each box = $2.15
fraction of boxes of pencil used = 6 / 15
number of boxes of pencil used = [tex]\frac{6}{15} *30 \ boxes = 12 \ boxes[/tex]
number of boxes of pencil remaining = 30 boxes - 12 boxes = 18 boxes
Cost of the 18 boxes remaining = 18 x $2.15
= $38.7
Therefore, she spent $38.7 on the remaining boxes.
EASY 10 POINTS JUST HELP ME WITH THIS PROBLEM!
Answer:
x = 10
Step-by-step explanation:
-x - 4 = 4x - 54
Add x to both sides
-4 = 5x - 54
Add 54 to both sides
50 = 5x
Divide both sides 5
10 = x
Hope this helps and pls do mark me brainliest if you can:)
Earth travels 30 kilometers each second as it revolves around the Sun. How many miles does Earth travel in 1 second?
Answer:
18.64 Miles
Step-by-step explanation:
What is the value of x if 5x + 55 = 35?
Select one:
90
-20
-4
18
Answer:
x=-4
Step-by-step explanation:
5x -4 is -20 +55 is 35
Which is a diagonal through the interior of the cube?
A cube. The top face has points A, B, D, C. The bottom face has points E, F, H, G.
Side A D
Side B G
Side C E
Side D F
oh and those are the answer choices
Answer :
Bg
Step-by-step explanation:
Answer:
Here is the real answer I got it wrong on edge just to see the answer for you guys I promise its right AH, BG, DE, DH
Step-by-step explanation:
Welcome
On a planet, a rock is dropped from the top of a 400-foot cliff. After 1 second, the rock is traveling feet per second. After seconds, the rock is traveling feet per second.
a. Assume that the relationship between time, t, and speed, s, is linear and write an equation describing this relationship. Use ordered pairs of the form (time, speed).
b. Use this equation to determine the speed of the rock seconds after it was dropped.
Answer:
sorry i do not know . i just need to answer this. no hard feelings
Step-by-step explanation:
help me please if you are good at 8th-grade math I need help!!!!!!!
Answer:
A. slope is 7 3 is y itercept B. -2 slope 1 y intercept
What are the angles and lengths of the new ornament?
Answer:
the angles are the same but the lengths are now 15 feet
Step-by-step explanation:
similar shapes have the same angles and 1.5 x 10 is 15
for what value of x is g(x)=5
Anthony has 260 cars and sells them at a rate of 5 cards a day. Ben has 100 cards and buys them at a rate of 3 cards per day. After how many days will they have the same number of cards
Answer:
After 20 days, they will have the same number of cards
Step-by-step explanation:
Given;
number of cards with Anthony, = 260 cards
rate of his sale = 5 cards/day
number of cards with Ben, = 100 cards
rate of his purchase, = 3 cards/day
let the number of days when they will have the same number of card = n
set up the linear equation, consider sale as subtraction from the initial value and also consider purchase as an addition to the initial value.
260 - 5n = 100 + 3n
260 -100 = 3n + 5n
160 = 8n
n = 160 / 8
n = 20 days
Therefore, after 20 days, they will have the same number of cards
For 0 ≤ ϴ < 2π , what are the solutions to sin2(ϴ) = 2sin2 (StartFraction theta Over 2 EndFraction)?
Answer:
Its A. I took the quiz.
Step-by-step explanation:
Soluions for the given expression in the given interval will be {0, π/2, 3π/2}.
Option A will be the answer.
Solutions of the trigonometric identites:Given expression in the question,
[tex]\text{sin}^2(\theta)=2\text{sin}^2(\frac{\theta}{2} )[/tex]
[tex][2\text{sin}(\frac{\theta}{2} )\text{cos}(\frac{\theta}{2} )]^2=2\text{sin}^2(\frac{\theta}{2} )[/tex]
[tex]4\text{sin}^2(\frac{\theta}{2} )\text{cos}^2(\frac{\theta}{2} )=2\text{sin}^2(\frac{\theta}{2} )[/tex]
[tex]4\text{sin}^2(\frac{\theta}{2} )\text{cos}^2(\frac{\theta}{2} )-2\text{sin}^2(\frac{\theta}{2} )=0[/tex]
[tex]2\text{sin}^2(\frac{\theta}{2} )[2\text{cos}^2(\frac{\theta}{2} )-1)]=0[/tex]
[tex]\text{sin}\frac{\theta}{2}=0[/tex]
[tex]\frac{\theta}{2} =n\pi[/tex]
[tex]\theta=2n\pi[/tex] [Here, n = integer]
[tex]\theta=0,\pi,2\pi.....[/tex]
Therefore, [tex]\theta=0[/tex] [Since, [tex]0\leq \theta < 2\pi[/tex]]
[tex]2\text{cos}^2(\frac{\theta}{2})-1=0[/tex]
[tex]\text{cos}\theta=0[/tex]
[tex]x=\frac{\pi}{2}+\pi n}[/tex] [Here, n = integer]
Therefore, [tex]\theta=\frac{\pi}{2},\frac{3\pi}{2}[/tex] [Since, [tex]0\leq \theta < 2\pi[/tex]]
Hence, soluions for the given expression will be {[tex]0,\frac{\pi}{2} ,\frac{3\pi}{2}[/tex]}.
Learn more to get the solutions of the trigonometric expressions here,
https://brainly.com/question/14108526?referrer=searchResults
Some spiders can spin a web at 3 cm per second. Convert this rate to meters per minute. (100 cm = 1 m)
Answer:
1.8m per minute
Step-by-step explanation:
Answer:
[tex]\frac{1.8 \ m}{1 \ min}[/tex] ; (1.8 meters per minute)
Step-by-step explanation:
Use dimensional analysis to solve this problem.
The proper units of conversion are given in parentheses on this question: 100 cm = 1 m.
Start with the given value, 3 centimeters/1 second.
[tex]\frac{3 \ cm}{1\ sec}[/tex]Convert this rate to meters/minute by multiplying 3 cm/1 sec by 1 m/100 cm.
[tex]\frac{3 \ cm}{1 \ sec} * \frac{1 \ m}{100 \ cm}[/tex]The top and bottom units should cancel out, so that's how you know to put the cm units on the bottom to cancel out with the 3 cm on the top.
Multiply the fractions together. The "cm" units cancel out.
[tex]\frac{3\ m}{100 \ sec}[/tex]Now you want to make the bottom units = minutes. There are 60 seconds in 1 minute, so you can use [tex]\frac{60 \ sec}{1 \ min}[/tex] to multiply with [tex]\frac{3\ m}{100 \ sec}[/tex].
[tex]\frac{3\ m}{100 \ sec} * \frac{60 \ sec}{1 \ min}[/tex]The "seconds" unit cancels out, so you are left with meters on the top and minutes on the bottom. Multiply the fractions together.
[tex]\frac{180 \ m}{100 \ min}[/tex]We want the rate to be meters per minute (1), so completely simplify this fraction and divide the fraction by (100/100), so the denominator is 1 min.
[tex]\frac{180 \ m}{100 \ min} \div \frac{100}{100}= \frac{1.8 \ m}{1 \ min}[/tex]Ms. Romana went to dinner at the Olive Garden and the never ending pasta bowl gets you and your family a $62.75 total bill. What would be the amount of a 15% tip?
Answer:
9.41$
Step-by-step explanation:
Simply do 62.75 times 0.15 and get 9.41.
A recipe calls for 40 ounces of rice how many grams of rice does the recipe require
Answer:
1,120
Step-by-step explanation:
quadratic equation in standard form
-x+13=3x
Hayley is buying herbs. She wants to buy 5/6 ounce of basil. The scale she is using to weigh the basil displays the weight as a decimal. How will she know when the display on the scale is correct to the tenths place? Explain your reasoning.
Answer:
0.8 ounces
Step-by-step explanation:
Given that:
Ounce of basil Hayley wishes to purchase = 5/6 ounces
Since the scale is displaying as decimal, then the fraction of basil to be purchased will be could be converted to decimal;
5/6 = 0.83333
To the nearest tenth ;
5/6 = 0.8 ounces
Once the display on the scale shows 0.8, then it is equivalent to 5/6 ounces of basil.
1/2(10k - 16) + 11 = -2 solve for k and show your work in rows
Answer:
k= -1
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
(10k-16)+11= -2
[tex](\frac{1}{2} ) (10k)+(\frac{1}{2} )(-16)+11 = -2[/tex]
(5k)+(-8+11)= -2
5k+ 3= -2
Step 2: Subtract 3 from both sides.
5k+3−3=−2−3
5k=−5
Step 3: Divide both sides by 5.
[tex]\frac{5k}{5} = \frac{-5}{5}[/tex]
k= -1
The price of a baseball glove is $8 more than half the price of spikes. The glove costs $54. Solve the equation 5/2+ 8 = 54 to find out how much the spikes cost.
Answer:
$23
Step-by-step explanation:
1/2 + 8 = 54
subtract 8 from both sides: 1/2 = 46
divide 46 by 1/2: 23
check your answer: 23 * 2 + 8= 54
I hope this helped, please mark Brainliest, thank you!
Help me for 10 points.
Answer: What ?!
Step-by-step explanation: Omae wa mou shindeiru
For every 0.3048 meters, there is one foot. Determine the number of feet in 7.9248 meters. Use paper to support your answer.
Answer:
26 feet
Step-by-step explanation:
7.9248 divided by 0.348
The value of group therapy for the treatment of mental health disorders is that an individual can __________. A. find comfort in talking with people that have similar experiences B. be a part of a group that allows one to hide his or her feelings C. borrow medication from other group members when needed D. none of the above Please select the best answer from the choices provided. A B C D
Answer: A. find comfort in talking with people that have similar experiences
Step-by-step explanation: A group can be considered to be a gathering which comprises of two or people working or coming together for a common purpose. In the aspect of mental psychology, the group method of applying therapeutic measures is usually applied which involves the coming together of a group of mentally or psychologically traumatized person with the aim of allowing members to share their experience among people who have gone through something simailr in other ot make them more comfortable while sharing their experience since all group members would have passed through something similar or worse. Hence, it gives patients more freedom to express themselves.
Answer: The answer would be A :3
Hope this helps :D
A prepaid phone card has a balance of $22.40 remaining. If calls are $0.035 per minute, which equation represents the number of minutes, m, you may talk using the card?
Answer:
The equation that represents the number of minutes that Imay talk using the card is [tex]m =28.571\cdot C[/tex].
Step-by-step explanation:
From statement we know that balance ([tex]C[/tex]), measured in US dollars, is directly proportional to remaining call time ([tex]m[/tex]), measured in minutes. That is:
[tex]C \propto m[/tex]
[tex]C = k\cdot m[/tex] (Eq. 1)
Where [tex]k[/tex] is the proportionality ratio, measured in US dollars per minute.
If we know that [tex]k = 0.035\,\frac{USD}{min}[/tex], then the equation is:
[tex]C = 0.035\cdot m[/tex]
Now we clear remaining call time within equation:
[tex]m =28.571\cdot C[/tex]
The equation that represents the number of minutes that Imay talk using the card is [tex]m =28.571\cdot C[/tex].