Answer:
21
Step-by-step explanation:
30 - 9 +3
30 - 12
18
18 - 12=4
12/4 = -3
18 - -3
21
the answer is 21
30 - 9 = 21
21 + 3 = 24
12 divided by 4 = 3
24 - 3 = 21
21 is the answer once again
Solve for x:
3x + 5 = 5x – 9
Answer:
x=7
Step-by-step explanation:
Which of the following number lines and solution sets show the values of r that make the inequality -2r+3<9 true
Answer:
"Solving'' an inequality means finding all of its solutions. A "solution'' of an inequality is a number which when substituted for the variable makes the inequality a true statement. When we substitute 8 for x, the inequality becomes 8-2 > 5. Thus, x=8 is a solution of the inequality.
Step-by-step explanation:
Example 1:
Consider the inequality
displaymath173
The basic strategy for inequalities and equations is the same: isolate x on one side, and put the "other stuff" on the other side. Following this strategy, let's move +5 to the right side. We accomplish this by subtracting 5 on both sides (Rule 1) to obtain
displaymath174
after simplification we obtain
displaymath175
Once we divide by +2 on both sides (Rule 3a), we have succeeded in isolating x on the left:
displaymath176
or simplified,
displaymath177
All real numbers less than 1 solve the inequality. We say that the "set of solutions'' of the inequality consists of all real numbers less than 1. In interval notation, the set of solutions is the interval tex2html_wrap_inline187 .
Example 2:
Find all solutions of the inequality
displaymath189
Let's start by moving the ``5'' to the right side by subtracting 5 on both sides (Rule 1):
displaymath190
or simplified,
displaymath191
How do we get rid of the ``-'' sign in front of x? Just multiply by (-1) on both sides (Rule 3b), changing " tex2html_wrap_inline201 " to " tex2html_wrap_inline203 " along the way:
displaymath192
or simplified
displaymath193
All real numbers greater than or equal to -1 satisfy the inequality. The set of solutions of the inequality is the interval tex2html_wrap_inline205 .
Example 3:
Solve the inequality
displaymath207
Let us simplify first:
displaymath208
There is more than one route to proceed; let's take this one: subtract 2x on both sides (Rule 1).
displaymath209
and simplify:
displaymath210
Next, subtract 9 on both sides (Rule 1):
displaymath211
simplify to obtain
displaymath212
Then, divide by 4 (Rule 3a):
displaymath213
and simplify again:
displaymath214
It looks nicer, if we switch sides (Rule 2).
displaymath215
In interval notation, the set of solutions looks like this: tex2html_wrap_inline227 .
hi can someone help me with my question, which is 2 ( 3 + x) - 7 = x + 5?
Answer: x=6
Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
2*(3+x)-7-(x+5)=0
(2 • (x + 3) - 7) - (x + 5) = 0
x - 6 = 0
Solve : x-6 = 0
Add 6 to both sides of the equation :
x = 6
Answer:
x = 6
Step-by-step explanation:
2(3+x)-7=x+5
We move all terms to the left:
2(3+x)-7-(x+5)=0
We add all the numbers together, and all the variables
2(x+3)-(x+5)-7=0
We multiply parentheses
2x-(x+5)+6-7=0
We get rid of parentheses
2x-x-5+6-7=0
We add all the numbers together, and all the variables
x-6=0
We move all terms containing x to the left, all other terms to the right
x=6
You are considering selling your home. You consult with an agent who gives you the asking prices of five homes (comps) in your area: $165,000, $188,000, $175,000, $150,000 and $400,000. The $400,000 is an outlier so you will not include it in your evaluation. In determining a reasonable asking price, what is the mean of the four remaining comps?
Answer:
$169,500Step-by-step explanation:
Mean is the average of the numbers. It is expressed as the ratio of the sum of the numbers to its sample size.
Mean = sum of the amounts/sample size
Sum of the amounts = $165,000 + $188,000 + $175,000+$150,000
Sum of amounts = $678,000
Sample size = 4 (excluding the outlier)
Mean = $678,000/4
Mean = $169,500
Hence the mean of the four remaining comps is $169,500
What is cos 45º?
O A.
1
2
O B. 7 /
O C. 13
1
O D.
E. 1
0
OF A
F. 3
Answer:
The exact value of cos(45°) is √(2) / 2.
Step-by-step explanation:
Answer:
Answer:√2/2=cos45
√2/2×√2/√2=2/2√2
1/√2
PLS HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Answer:
PR = 8 ST = 1
Step-by-step explanation:
PQ = PR
PQ = 8
PR = 8
ST = TU
2z+3 = 5z
z = 1
TU = 2(1)+3
TU = 5
Find the slope, midpoint and distance using these points: (6,-5) (-4,8)
Here is the charge at a car park in Spain.
Car park = 0.024 euros per minute
Jon parked his car in this car park.
Jon drove into the car park at 1045
When he drove out of the car park he had to pay 8.40 euros.
At what time did Jon drive out of the car park?
Answer:
Given : car park charges 0.018 euros per minute.
claude parked his car in this car park at 13:15.
he had to pay 4.50 euros.
To Find : at what time did claude drive out of the car park
Solution:
car park charges per minute = 0.018 euros
Parking Charges paid = 4.50 Euros
Time car parked for = 4.50/0.018
= 250 minutes
= 4 hr 10 minutes
parked his car at 13:15
Parked for 4 hr 10 min
claude drive out of the car park = 13+4 = 17 hr
15 + 10 = 25 min
claude drive out of the car park at 17 : 25
please mark brinliest
Jon drive out of the car park at 16 : 35
What is Division?The division is one of the basic arithmetic operations in math in which a larger number is broken down into smaller groups having the same number of items.
Here, car park charges 0.024 euros per minute.
Jon parked his car in this car park at 10:45.
he had to pay 8.40 euros.
Time car parked for = 8.40/0.024
= 350 minutes
= 5 hrs 50 minutes
parked his car at 10:45
Parked for 5 hrs 50 mins
Jon drive out of the car park = 10:45 + 5:50
= 16:35
Thus, Jon drive out of the car park at 16 : 35 .
Learn more about Division from:
https://brainly.com/question/21416852
#SPJ2
what is square root of 27.04 by long division method?
Answer:
5.2
Step-by-step explanation:
Find the next three numbers.
1 , 0.6 , 0.36 , 0.216 . . .
Answer:
0.1296
0.07776
0.046656
The pattern is that you would multiply the next number by 0.6 with the previous number to get your answer
1/0.6 =0.6
Meaning that 0.6 * 0.6 = 0.36 and 0.36 * 0.6 = 0.216 and so on..
I hope this helps!
HELP QUICK which function has the greater rate of change
Answer:
Function A i think.....
Step-by-step explanation:
4, -8, 16, _, 64
What is the 4th missing term?
yo lo yolo trol
Step-by-step explanation:
nnsnsns
Please help! Thank u so much
Answer:
x= 11/3
Step-by-step explanation:
6x-8=3+3x
6x-8+8=3+3x+8
6x=3x+11
6x-3x=3x+11-3x
3x=11
3x/3=11/3
x=11/3
Compare 6 x 10^8 to 3 x 10^6
A) 6 x 10^8 is 2,000 times larger then 3 x 10^6
B)6 x 10^8 is 200 times larger then 3 x 10^6
C)6 x 10^8 is 20 times larger then 3 x 10^6
D)6 x 10^8 is 2 times larger then 3 x 10^6
Answer:
i think B
Step-by-step explanation:
it just seems like the most reliable and best choice
What is the solution of the proportion 2/3 = x/14 ? Round to the nearest tenth if necessary.
A. 21
B. 2
C. 7
D. 9.3
Answer:
D. 9.3
Step-by-step explanation:
Answer:
D ( 9.3)
Step-by-step explanation:
2/3 = x/14 -->
14 *2/3 = x -->
28/3 = x -->
9.33.... = x-->
9.3 = x
Which segment is a diameter of this circle?
Ο TX
O VX
Ο XY
Answer:
The answer is VX.
Step-by-step explanation:
This is because the line segment VX, reaches from one end of the circle to the other, touch both sides of the circle. The other options do not make sense since segment XY does not go through the center of the circle and TX is the radius of the circle. The radius is half the diameter of the circle.
Therefore, the answer is VX.
plz help pllzz 35 points
Answer:
$18 an HOUR
Step-by-step explanation:
Noah earned $232.70 working for 13 hours.
We are trying to find each hour,
We can make this into a FRACTION.
232.70/13 = 1/x
Multiply across,
13x=232.70
232.70/13=17.9
We can round this to $18 :D
(Pls Help ASAP will give 10 points for 1 question)
Answer:
7
Step-by-step explanation:
...................
The point P(-5.7) is reflected over the X-axis, what are the coordinates of the reflected point?
giving brainlist for correct answer. :))
Answer:
162 cubes
Step-by-step explanation:
The formula for finding the volume of a rectangular prism is length x width x height.
6 x 3 x 4.5 = 81
Since each cube is only half a centimeter, we need to multiply this by two.
81 x 2 = 162 cubes
In the 1980s, Earth had about five months of very hot weather. In the 1990s, Earth had about
22 months of very hot weather. What is the percent increase in hot weather months from the
1980s to the 1990s? Round to the nearest percent.
Answer:
340%
Step-by-step explanation:
1980s = 5 months of very hot weather
1990s = 22 months of very hot weather
What is the percent increase in hot weather months from the
1980s to the 1990s?
Percent increase = (22 months - 5 months) / 5 months × 100
= 17 / 5 × 100
= 3.4 × 100
= 340%
Percent increase in hot weather months from the 1980s to the 1990s is 340%
POLYNOMIALS MULTIPLICATION
(x^2-3) (4x+x^2-7)
Find the product of the polynomials in standard form
Answer:
x^4+4x^3-10x^2-12x+21
Step-by-step explanation:
Answer:
:D
Step-by-step explanation:
o_o <3
1. Find the volume of the prism below. *
22 in
U! 6L
5.5 in
A 294.8 cubic inches
O B 955.9 cubic inches
O C 35.4 cubic inches
OD 179.3 cubic inches
Surgical treatment of a broken arm costs $16,911. You have a $1,000 deductible and then your insurance will pay 85% of the remaining cost. Your insurance also has an out-of-pocket maximum charge of $3,500. What is your cost?
Using proportions, it is found that your cost is of $12,411.
What is a proportion?A proportion is a fraction of a total amount.
In this problem, the treatment costs $16,911, with a deductible of $1,000, hence the price is already of $15,911.
The insurance will pay 85% of the remaining cost, or $3,500, whichever is greater, hence:
0.85 x 15911 = $13,524 > $3,500.
Hence, the insurance pays only $3,500, and your cost is given by:
15911 - 3500 = $12,411.
More can be learned about proportions at https://brainly.com/question/24372153
x = what? (giving brainliest and thanks)
Answer:
x=12
Step-by-step explanation:
PLEASE help if you’re able!!
To find the sum of interior angles of this polygon you have to use the equation
S=180(n-2)
where n is the number of sides
S=180(6-2)
S=180(4)
S=720 degrees
The sum of all angles is 720 degrees
[tex]110 + x + 25 + x - 30 + x + x + 115 = 720[/tex]
[tex]4x = 720 - 110 - 25 - 115 + 30[/tex]
[tex]4x = 720 - 220[/tex]
[tex]4x = 500[/tex]
[tex]x = \frac{500}{4} = 125[/tex]
Anita has five puppies. The weights of the puppies are 6 pounds, 14 pounds, 6 pounds, 12 pounds, and 7 pounds. What is the mean weight of the puppies?
Answer:
9
Step-by-step explanation:
6+6+12+14+7
=45
45÷5
=9
the mean is 9 pounds
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
C=
yards
4 yd.
3yd.
Answer:
5yds
Step-by-step explanation:
[tex]a^{2} +b^{2} =c^{2}[/tex]
[tex]4^{2} +3^{2} =c^{2}[/tex]
16+9=[tex]c^{2}[/tex]
25 = [tex]c^{2}[/tex]
[tex]\sqrt{25[/tex] = c
5= c
5 yds
The line y = 0.5x + 8 passes through (-10, a) and (-20, b). Find the values of a and b.
Answer:
Step-by-step explanation:
Write out the equation y = 0.5x + 8. Now focus on the point (-10, a). In the given equation, let y = a and x = -10: a = 0.5(-10) + 8, so that a = 3.
Next, focus on the point (-20, b). Find b: In y = -0.5x + 8, replace x with -20 and y with b: b = 0.5(-20) + 8, or b = -10 + 8, or b = -2
Sandy drinks 12 liters of water every week. There are approximately 19 liters in 5 gallons. Which amount is closest to the number of gallons of water Sandy drinks in 4 weeks?
Answer:
13 gallonsStep-by-step explanation:
Sandy drinks 12 liters of water every week
There are approximately 19 liters in 5 gallons
In 4 weeks Sandy drinks
4*12 liters = 48 liters of waterConverted to gallons
19 liters = 5 gallons, then1 liter = 5/19 gallons, then48 liters = 48*5/19 gallons = 12.63 gallons ≈ 13 gallons roundedAnswer:
13 gallons
Step-by-step explanation: