how to graph x<-28 on a number line
Draw out a number line. Make sure -28 is on the number line, along with other optional values (such as 0 perhaps). At -28, plot an open circle or hole. This indicates this value is not part of the solution set. This is because there is no "or equal to" as part of the inequality sign. Then shade to the left to indicate values smaller than -28.
So in summary, you'll have an open hole at -28 and shading to the left.
Answer:
Step-by-step explanation:
Put it in the calculator
An electrician needs 1/3 of a roll of electrical wire to wire each room in a house. How many rooms can he wire with 1 2/3 rolls of wire?
Answer:
5 rooms
Step-by-step explanation:
1/3
1/3
1/3
1/3
1/3
A particular type of cell doubles in number every hour. Which function can be used to find the
number of cells present at the end of h hours if there are initially 4 of these cells?
Answer:
The function would be
.This is in the general form
, where a is the initial value, b is the rate it increases by, and x is the amount of time. For our function, the initial value is 4 and the rate it increases by is 2.
Step-by-step explanation:
Rapid Rental Car charges a $40 rental fee, $25 for gas, and $0.65 per mile driven. For the same car, Capital
Cars charges $55 for rental and gas and $0.75 per mile.
Part 1 out of 2
For how many miles is the rental cost at both companies the same?
The rental costs at both companies are the same at
miles.
40 + 15 + 0.25x = 45 + 0.35y
Solution
55 + 0.25x = 45 + 0.35y The only way you can do this is to assume that x and y are equal
subtract 45 from both sides
55 - 45 + 0.25x = 0.35x
10 + 0.25x = 0.35x Subtract 0.25x from both sides.
10 = 0.35x - 0.25x
10 = 0.1x Divide by 0.1
10/0.1 = x
x = 100 So if each car goes 100 miles, it should turn out to be the same no matter which company gets the rental.
Let's see if that is true.
Cost for the first company = 40 + 15 + 0.25x = 55 + 25 = 80 dollars.
Cost for the second company = 45 + 0.35x = 45 + 35 = 80 dollars.
Conclusion
Both rentals charge the same total amount when each car is driven 100 miles.
The charge is 80 dollars.
Hope this helped! :)
4(8x + 1) - 6(1 - 8x) .......
Answer:
80x-2
Step-by-step explanation:
4(8x+1)-6(1-8x)
32x+4-6+48x
32x+48x+4-6
80x-2
Francisca and Elizabeth are participating in a walk-a-thon fundraiser. Each girl walks for 3 hours. How much will they raise together? Show your work.
Answer:
They both gain $200 for their fundraiser.
Answer:
2m×3
hope this helped
❤️❤️
PLZ HELP!!
1. Identify the following situation or equations as proportional or non-proportional and explain your reasoning.
The total cost of rent is determined by recording x months of rent at $1400 per month, plus a $150 application fee.
Answer:
1550
Step-by-step explanation:
please answer the question on the picture
Answer:
a 10%, 0.1, 1/10- b 50%, 0.5, 1/2- c 48%, 0.48, 12/25
Step-by-step explanation:
What is the reciprocal of 54.2984
Answer:
0.01841674892
Step-by-step explanation:
hope that helps
taylosky pls answer this
Answer:
I hope whoever that is answers
Step-by-step explanation:
Answer: What
Step-by-step explanation:
What is the answer to 4 + 10
Answer:
14
Step-by-step explanation:
Please help 20 points
The number of kilograms that an object weighs varies directly as the number of pounds. If an object weighs 45 kilograms or about 100 pounds, about how many kilograms is an object that weighs 70 pounds?
Answer:
This is the specific answer: 31.7515
Answer: 31.5
Step-by-step explanation:
To solve this ratio problem, you need the common ratio. Divide the amount of pounds by the amount of kilograms.
Step 1: Divide 100 pounds by 45 kilograms
100 ÷ 45 = 2.2
This is the common ratio
Step 2: Divide 70 pounds by 2.2
70 ÷ 2.2 = 31.5
This is the amount of kilograms in a 70 pound object
Which equation is not a linear function?
A. y=x+2
B. y=x-2
C. y=x2
D. y=2x
A toy store’s percent of markup is 35%. A model train costs the store $200. Find the markup.
Select all the correct answers.
Which relations are functions?
x
y
-2
-4
-2 -6
0
-8
2
-10
x
y
0
4
10 5
20
6
10
7
x
y
2
-10
1 -20
0
-10
-1
-20
x
y
2.5
0
3.5 4
4.5
8
6.5
12
x
y
-10
4
-20 5
0
6
-10
7
Answer:
The third and fourth ones are functions.
Step-by-step explanation:
How that helped.
Answer:
3rd and 4th
Step-by-step explanation:
.
1. The school office is now selling neon mechanical pencils. If the office pays $10.80 for a dozen pencils, how much should be charged to make a profit of 75 cents each?
2. Several cases of 16-ounce bottles of water were purchased for $252.00. If one case costs $7.00, how many cases were purchased?
3. Okolona College ordered jerseys to sell at the homecoming game. The college paid $9.25 each for 225 jerseys. Each jersey was sold for $15.75. What was the percent of markup for each jersey? How much profit was made if all of the jerseys were sold?
4. A truck traveled 654 miles on a long distance run. If the truck averaged 55 mph, how many hours did it take to reach the truck's destination? (Round to the nearest hour)
5. Della Riley borrowed $2400 for 6 months to invest in a business venture. If she agreed to pay 8% interest annually, how much will she be repaying?
6. It takes Dan an average of 45 minutes each evening to do his chemistry homework. Dan calculates that he worked a total of 3 hours on chemistry last week. Assuming that Dan worked his average time per evening consistently, how many evenings did Dan work?
7. Jon's car averages 20 mpg in town and 28 mpg on the road. What is the percent of decrease between the two driving conditions?
Answers:
1)10.80/12 =0.90
0.90+0.75=1.65
2)252/7=36 units
3)cost price = $9.25*225
= $2081.25
Selling price = $15.75*225
= $3543.75
Profit = Selling price - cost price
Profit = $3543.75 - $2081.25
=$1462.50
5) FV = L*(1 + rt),
Where FV is the amount to repay; L is the borrowed amount (the loan amount) and "r" is the annual interest as decimal; t is the time.
In your case L = 2400 dollars; r = 8% = 0.08 (as decimal) and t = 0.5 of a year (6 months).
Therefore,
FV = 2400*(1 + 0.08*0.5) = 2496.
In 6 months, Della Rilley must repay $2496
4) 654miles/55mph=11 hours, 53 minutes, 27 seconds ANS: ap.12 hours
time = distance/speed
6) 60*3=180mins
180/45=4
Ans: 4 days
7) This is a decrease of 8
a decrease of 28.57% rounded to two decimals
Starting at 1:00 p.m., the temperature changes −4 degrees Fahrenheit per hour. Write and solve an equation to find how many hours x it will take to reach −1°F.
I NEED AN EQUATION NOT AN ANSWER
Answer:
3 hours ?
Step-by-step explanation:
Find the arc length of the partial circle.
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
please help!!
Answer:
1/2pi
Step-by-step explanation:
Since the formula for circumference is 2*pi*r and we know the R=1 so the of the whole circle is 2pi. This is a quarter of a circle so the answer is 1/2pi
Answer:
1/2pi
Step-by-step explanation:
Diego measured the length of a pen to be 22 cm.
The actual length of the pen is 23 cm.
What is the percent error for Diego’s measurement?
Explain or show your reasoning.
Anybody need help with some work?
Don't feel like scrolling thru the thing so just put them here lol
Doesn't matter what subject.
Answer:
nope. im done with school :D
Step-by-step explanation:
Answer:
what is the word called for angles that form a straight line and are supplementary
what is 2x – 4 = 2? Please answer soon!
(15 points and brainlyist to first person who answers!!!!)
Answer:
x = 3
Step-by-step explanation:
2(3) - 4 = 2
If m = 28 and n = 4, what is the value of the following expression?
m - 5 • n + 4
A.
92
B.
96
C.
12
D.
4
Answer:
d.4
Step-by-step explanation:
28−(5)(4)−4
=28−20−4
=8−4
=4
Please help! ASAP! I will give brainliest!!
Tara works at a call center for a home shopping network. The table below shows the number of orders placed with the network per day based on the number of calls received per day by the network.
Number of Calls, x 200 250 300 350 400
Number of Orders, N 170 225 272 326 374
Which equation best models this set of data?
A. N = x2 - 27
B. N = -x2 + 27
C. N = -x + 27
D. N = x - 27
Answer:
c
Step-by-step explanation:
Answer:
its actually D
Step-by-step explanation:
hope this helps
I'm confused, is it A or D?
Answer:
D. x>7
Step-by-step explanation:
Multiply - and -3
x+3>10
Subtract 3 on both sides
x>7
(Remember you can only switch the symbol if you divide or multiply by negative it does not apply on addition or subtraction)
Hope this helps!
Answer:
It is D.
Step-by-step explanation:
Remove parentheses: x + 3 > 10
Subtract 3 from both sides: x > 10 - 3
Simplify 10 - 3 to 7: x > 7
I need heeeeeellllllllpppppp
Answer:
-7/5 is greater than -1 1/5 because -7/5 lies above -1 1/5 on a vertical number line.
Step-by-step explanation:
I hope this is correct. If not I'm so sorry!
John paid $50 for renting a cycle for 5 hours. Which graph shows the relationship between the cost of renting a cycle for different hours?
Photos go from A to D. I'm guessing it's A but I still want to check.
Answer:
Step-by-step explanation:
You are correct. It is A
The cost is 10 dollars an hour. As the hours increase, so does the cost.
Plz help me with these, I don't understand this subject.
Answer:
A
Step-by-step explanation:
I might be wrong but it seems right.
Answer:
A
Step-by-step explanation:
That's just how you set up these equations don't know how to explain more
What is the slope of the line?
Answer:
Y= -4/-4x -1
Step-by-step explanation:
I think this is correct, I haven't done this in awhile though. I hope this helps
I need one ratio equivalent to the ratio of white socks to brown socks. I already have 28/1 and I need one more
Answer:
14/10
21/15
Step-by-step explanation:
just found number equivalent to 7/5
Please help me i would appreciate it
Answer: oh gosh, rlly bad at math... let me do the maths quick, and will edit my answer to the correct answer i dont have enough time, -7a+11
Step-by-step explanation: