Given expressions:
5x -2 > 19 - 2x
3x -5 < 5x - 3
Simplifying;
a. 5x -2 > 19 - 2x ;
Collect like terms;
5x + 2x > 19 + 2
7x > 21
Divide both sides by 7 to give;
x > 3
Not if we divided by a negative value, the sign of the inequality changes.
b. 3x -5 < 5x - 3
Collect like terms;
3x - 5x < -3 + 5
-2x < 2
Divide both sides by (-2), note, the sign of the inequality changes;
x > -1
The school secretary orders a new printer and pays $310.30 after tax. The tax rate is 7%. What was the original price of the printer?
Answer:
$288.58
Step-by-step explanation:
310.30/100=3.10
3.10*7=21.72
310.30-21.72=288.58
Therefore the answer is $288.58
Answer:
It's 290
Step-by-step explanationI guessed and it was correct.
The tax in Colorado is found by multiplying the retail price by 0.029. A television set has a retail price of $908.55. Calculate the sales tax to the nearest penny.
-2(x + 4) - 2x < 8...need help
Answer:
-2x-8-2x<8
-4x<16
whenever you divide by negative the sign will change
x>-4
A hairdresser combined three bottles of shampoo into one bottle. The first bottle had 4.8 ounces of shampoo, the second bottle had 5.4 ounces, and the third bottle had 6.6 ounces. The hairdresser used
of the shampoo from the new bottle when she washed her hair. How many ounces of shampoo did she use? Describe two different ways to solve the problem.
Answer:
16.8
Step-by-step explanation:
4.8 + 5.4 + 6.6 = 16.8
the book fair raises $250 per day for school. show table and equation
Answer:250 day 1. 500 day 2 750 day 3
Step-by-step explanation:
3 ice cream cones cost 8.25 at this rate how much do 2 ice cream cones cost
What is the square root of -360
Answer:
6i√10
18.9737i
Step-by-step explanation:
√-1 = imaginary number i
Step 1: Define
√-360
Step 2: Factor
√-1 · √360
Step 3: Simplify
i · 6√10
Step 4: Multiply
6i√10
Step 5: Evaluate
18.9737i
Help ME! solve for ∠K.
Answer:
45
Step-by-step explanation:
Every Triangle has 180 degrees.
x + 8x + 3x = 180
12x = 180
x = 180/12
x = 15
Angle K = 3x
K = 3 * 15
K = 45
At a family reunion there are 60 hot dog s and 45 bags of chips. Each family member will receive the same amount of hot dogs and chips
Answer: What are you saying to solve?
Thanks.
John purchased a membership at a new gym. To join he had to pay an initial fee of $80 plus $20 per month. For one year his cost is $320. Identify the rate of change. ANSWER CHOICES ON PICTURE
Answer:
12
Step-by-step explanation:
It's 12, because you would multiply the monthly rate (20) by the number of months in a year (12) because the question asks "for one year".
20*12=240
240 +80 = 320
help me with this math question please !!!
Answer:
1: x+12
Step-by-step explanation:
You know she was born in 2008, and the current year is 2020, so you do 2020-2008 which equals 12
Scores on a mathematics assessment test for eighth-graders have a mean of 283, a 10th percentile of 232, a 25th percentile of 255, a 75th percentile of 304, and a 90th percentile of 327. Interpret each of these numerical descriptive measures. Interpret the mean value of 283. Choose the correct answer below. A. For this problem, the mean value of 283 represents the variation in the test scores on a mathematics assessment test for eighth-graders. B. For this problem, the mean value of 283 represents the range of test scores on a mathematics assessment test for eighth-graders. C. For this problem, the mean value of 283 represents the average test score on a mathematics assessment test for eighth-graders. D. For this problem, the mean value of 283 represents the middle test score when the scores are arranged in ascending (or descending) order.
Answer:
C ) For this problem, the mean value of 283 represents the average test score on a mathematics assessment test for eighth-graders.
Step-by-step explanation:
10 th percentile of 232
10 % below 232 and 90 % above 232
25 th percentile of 255
25 % below 255 and 75 % above 255
75 th percentile of 304
75 % below 304 and 25% above 304
90 th percentile of 327
90 % below 327 and 10 % above 327 .
So counting is from below to above in ascending order .
the mean of 283 represents the average of the test score
Hence option C ) is correct .
The score of the mathematics test for the 8th class have a mean of 283 and the 10th percentile of 232, a 25th percentile of 255 nd so on.
As per the question the 10 th percentile of 232 , hence the 10 % below 232 and 90 % above 232 . The 25 % below 255 and 75 % above 255 , 75% below 304 and 25% above 304. The 90 % below 327 and 10 % above 327 . So in ascending order the mean of 283 represents the average of the test score. Hence the option C is correct.Learn more about the mathematics assessment test for eighth-graders.
brainly.com/question/13077019.
first person to answer will get brainliest.
Answer:
the first one because x's don't repeat in this one
Step-by-step explanation:
(Math) Click for picture.
Answer:
Parallel lines
Step-by-step explanation:
They are on the same place but don't intersect.
explain rational numbers
Answer:
A rational number is a number that can be express as the ratio of two integers. A number that cannot be expressed that way is irrational. For example, one third in decimal form is 0.33333333333333 (the threes go on forever)
plz mark brainliest
Find the number of distinguishable permutations of the word "VANQUISH".
Answer:
40320
Step-by-step explanation:
no . of permutation of n different things taken all together is given by n!
n! = n*(n-1)*(n-2).......3*2*1
given that
we have to find number of distinguishable permutations of the word "VANQUISH"
here n = number of different letters in vanquish = 8
thus,
required permutation = 8! = 8*7*6*5*4*3*2*1 = 40320
Which graph does not represent a function ?
Answer:
D
Step-by-step explanation:
D is not a function because x's repeat. Each x value should have its own unique y value. The graph also fails the vertical line test, meaning that if you were to draw a vertical line anywhere on the graph it would intersect with more than one point.
A recent study showed that women who lived near a freeway had an unusually high rate of rheumatoid arthritis. Sarah said, “They should move away from freeways.”
Answer:
they should move away from the freeway
A teacher divides 12 oranges equally among her 16 students. How many oranges does each student receive
(A) 1/16
(B) 1/12
(C) 3/4
(D) 4/3
Answer:
C: 3/4
Step-by-step explanation:
You can go on to google calculator and find out the answer by 12/16.
Answer:
(C) 3/4
Step-by-step explanation:
Hope this helps you! Tell me are you in [tex]K^{12}[/tex]?
Because I can see kahoot and state testing. Am just asking. Not to be mean. Hope this helps! Plz mark brainlest!
Help on this please
ASAP
Answer: I think it is the second choice. The others don't make sense
Step-by-step explanation:
Answer:
It is the second one because an even number issss
Step-by-step explanation:
a number that can be divided by two right so all numbers can be divided by two but we need numbers that will be divided by two with NOTHING remaining.
.
Type the correct answer in the box.
Simplify this expression:
-2x + 3 - (5 - 6x)
Answer:
4x-2
Step-by-step explanation:
-2x + 3 - (5 - 6x)
-2x+3-5+6x
Collect Like Terms
4x+3-5
Calculate the difference, you should end up with 4x-2
In need of some Science help! If you can please go help me out! :)
Round to the place value of the underlined digit 862, 840. The 6 in 862,840
Answer:
860,000
Step-by-step explanation: 2 is less than 5 so you would round down
How many 3-letter words can be made from the letters MATH if
repetition of letters is allowed?
repetition of letters is not allowed?
Answer:
i’m unsure about with repetition allowed but the one WITHOUT repetition equals 24.
Step-by-step explanation:
Answer:
64 with, 24 without
Step-by-step explanation:
Lora Lungs drove her camper at 45 miles per hour for 4 hours and a half. How far did she drive?
202.5 milessssssssssss
what is the 50th term of the sequence 13,2,1
Answer:1, 3, 5, 7, 9, 11, 13, ... It is clear in the sequence above that the common difference f, is 2. Using the equation above to calculate
Step-by-step explanation:
The breakfast cafe uses 3 1/4 lb of coffee per day. How much coffee does it use ina 7 day week?
Answer: 22 3/4
Step-by-step explanation:
3 x 7 = 21
1/4 x 7 = 7/4 = 1 3/4
1 3/4 + 21 = 22 3/4
I hope this helps!
7th grade math help me plzz
Answer:
4+ (-7)
Step-by-step explanation:
To get to -3 from 4, first how far away is -3 from 4. It is 7 units away. If you wanted to get -3 from 4 then you have to subtract 7 from 4. Which is 4-7. 4-7 is the same as 4+(-7)
Using the distributive property
49×17+49×3=
Answer:
980
Step-by-step explanation:
49×17+49×3=
Factor the Expression
49(17+3)
Add the numbers
49x20
Multiply the numbers and you should end up with 980
i need some help please! im not sure if its irrational! will mark brainliest!
Answer:
The answer D because pi is a number that keeps on going.
3. The following are the values of a, b, and c that Edna, Luisa,
Jane
and Christy got when they expressed 5-3x = 2x² in standard form
Edna :a=-2, b = -3,c=5.
Jane: a=2, b= -3,C=-5
Luisa : a = -2,b=3,6=-5 Christy: a=-2, b = -3,6=-5
who do you think got the correct values of ab
and c in the given equation?
a. Edna
b. Luisa
Jane
d. Christy
Answer:
a = 2
b = 3
c = -5
Step-by-step explanation:
We are given Algebraic expression:
5-3x = 2x²
We rewrite it in standard form
2x² + 3x - 5
Algebraic form :
ax² + bx + c
Hence, the values of a, b, c is given below:
a = 2
b = 3
c = -5