7. Solve 3(a+3)-6=21. Write a reason for each step.
Given
3(a+3)-6=21
3a+9-6=21
3a +3=21
3a = 18
a=6
Simplify.
[2]
Division Property of Equality
c.
a. [1] Simplify
[2] Addition Property of Equality
b. [1] Distribution Property
[2] Subtraction Property of Equality
[1] Simplify
[2] Subtraction Property of Equality
[1] Distribution Property
[2] Addition Property of Equality
d.
Answer:
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Is (x+1)/x^2 greater or less or equal to 1/x
Answer:
(1) x^2 is greater than 1.
(2) x is greater than -1.
(1) x^2 is greater than 1 --> x2>1x2>1 --> x<−1x<−1 or x>1x>1. Sufficient.
(2) x is greater than -1 --> x>−1x>−1. Not sufficient.
What is the value of X X+11 2x+8 3x+1
Step-by-step explanation:
here is ur answer pls check it
eight hot dogs at the baseball park cost $28. how much does one hot dog cost? (let h = price of hot dog)
i need the equation please!!!
Answer:
3.5
Step-by-step explanation:
Answer:
h=$3.50
28/8
Step-by-step explanation:
For students majoring in Hospitality Management, it was determined that 5% have visited 1–10 states, 16% have visited 11–20 states, 45% have visited 21–30 states, 19% have visited 31–40 states, and 15% have visited 41–50 states. Suppose a Hospitality Management student is randomly picked. What is the probability that the student has visited 30 or fewer states?
9514 1404 393
Answer:
66%
Step-by-step explanation:
The categories are mutually exclusive, so we have ...
P(≤30) = P(1–10) +P(10–20) +P(20–30) = 5% +16% +45%
P(≤30) = 66%
The probability is 66% that a randomly chosen student has visited 30 or fewer states.
Answer:
.55
Step-by-step explanation:
just subtract .45 from 1 and then you have your answer.
What is the length of the line segment whose endpoints are (-1,5) and (3,-3)? Round your answer to the nearest tenth.
Answer:
4√5
Step-by-step explanation:
The length=√(3--1)²+(-3-5)²
l=√(4)²+(-8)²
l=√16+64
l=√80=4√5
A model ship is built to a scale of 1centimeter: 5 meters. The length of the model is 30 centimeters. What Is the length of the actual ship?
Order from greatest to least. Question 1 options: 3/4 -27/32 −0.851⎯⎯⎯⎯⎯⎯ - 0 . 851 ¯ 0.875 0.053571428⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 0 . 05 3571428 ¯ 0.2⎯⎯ 0 . 2 ¯ -11/28
Step-by-step explanation:
question 1.
[tex]\frac{3}{4}\\-0.851\\-\frac{27}{32}[/tex]
question 2
[tex]0.053571428\\\- 0.875\\\\- 0 . 851[/tex]
question 3
[tex]0.05 3571428\\\\-11/28\\\\-0 . 2[/tex]
Which expression is equivalent to 20c-8d? Show all work and circle letter of correct answer.
2(10c+4d)
4(5c-8d)
4(5c-2d)
c(20-8d)
Answer correctly and get brainiest
Answer: This one is equal to what we were looking for.
4 × 5c = 20 - 8d = 12
Step-by-step explanation:
(20c - 8d = 12) so we are look for an expression that is equal to 20c 8d and 12
2 × 10c = 20 + 4d = 24
4 × 5c = 20 - 8d = 12
4 × 5c = 20 - 2d = 18
c20 - 8d = 12
Anyone? need help ASAP will mark as brainlist
Daryl opens his shop at 8:30 AM and closes it at 7:50 PM. How long is the shop open?
Answer:
11 hours 20 minutes
Step-by-step explanation:
what point shows a local maximum ?
Can you find the slope and type the correct code?
Answer:
1. (3,19) and (-1,-13)
to find the slope you need to do [tex]\frac{y2-y1}{x2-x1}[/tex]
Hence [tex]\frac{-13-19}{-1-3}[/tex]= 32/-4=-8
2. Take two points on the graph:
(-2,3) and (1,0)
Know that to calculate the slope you do
[tex]\frac{rise}{run}[/tex]= 4/2= 2
3. To find the slope in a table you need to choose any two points and utilize the following formula: [tex]\frac{y2-y1}{x2-x1}[/tex]= [tex]\frac{-16-(-8)}{2-1}[/tex]=-8/1= -8
4. Like in #1 we take the two points and plug it into the formula:
[tex]\frac{8-(-10)}{0-9}[/tex]=18/-9= -2
Please rate positively and give brainlist!
Step-by-step explanation:
Given x2=9, solve for x
Answer:
4.5
so I did 9 /2 = 4.5
Answer:
4.5 or 9/2 or 4 1/2
Step-by-step explanation:
You divide 9 by 2, to get 4.5 in number form. 9/2 for improper fraction form and 4 1/2 for whole number fraction.
Which value is equivalent to 9^c x 9^-c A. 0 B. 1 C. 1/9^2C D. 9
Answer:
B
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]
[tex]a^{0}[/tex] = 1
Given
[tex]9^{c}[/tex] × [tex]9^{-c}[/tex]
= [tex]9^{(c-c)}[/tex]
= [tex]9^{0}[/tex]
= 1 → B
Numerical pruun
a. Convert the following.
i) 2.4 millimetres into metre
i
2.4 millimetres into meter is 0.0024.
Answer:
0.0024 meters
Step-by-step explanation:
Using conversion.
Hope this helps!
xoxo,
cafeology
Eighteen is six less than four times a number. (write and solve the equation - use x as your variable) *
Answer:
x = 6
Step-by-step explanation:
The given statement is "Eighteen is six less than four times a number".
Let the number be x.
ATQ,
18 = 4x-6
Taking like terms together,
18+6 = 4x
24 = 4x
x = 6
Hence, the value of x is 6.
A salesman sells a car for $11 000. If he is paid a commission of 4.5%
for the first $10 000 and 7.5% on the remainder, then the commission
he receives is
Find the midpoint between 5-2i and 7+6i
Answer:
6+2i
Step-by-step explanation:
(5+7)/2 = 6
(-2+6)/2 = 2
A card is drawn at random from a standard pack of 52 playing cards find the probity of drawing a heart or a club
Answer:
1/2
Step-by-step explanation:
From the question, there are 13 cards of heart and 13 card of club in each suit in each deck.
P(drawing heart) = 13/52
P(drawing club) = 13/52
And we know total standard pack =52
P(drawing a heart or a club)
= number of favourable outcome/ total Number of outcome
P( drawing heart or club) =( 13+13)/52
=26/52
=1/2
Jayden ran 9 laps in 27 minutes. How many minutes dose it take him to run 20 laps
Answer:
It would take him 60 minutes to run 20 laps.
Step-by-step explanation:
We can solve using proportions.
[tex] \frac{9 \: laps}{27 \: minutes} = \frac{20 \: laps}{x} \\ \\ \frac{540}{9} = \frac{9x}{9} \\ \\ 60 = x[/tex]
It would take him 60 minutes.
What pair of points have a slope of -3/5
Answer:
(5,0) and (0,3) have a slope of -3/5
Step-by-step explanation:
Here, we want to state a pair of points that have a slope of -3/5
Mathematically, we can have the slope of a straight line calculated as;
m = y2-y1/(x2-x1)
This could give points like (5,0) and (0,3)
"A number x increased by 6, and then doubled."
A)
2x + 6
B
B)
2x - 6
2(x + 6)
D)
246 - x)
Answer:
(X + 6 ) ×2
It is given in the question that the no. is increased by 6 so if we take the no. as X the new no. formed is X + 6 now on doubling it the answer we get is. 2(X+6)
The correct algebraic expression is option C) 2(x + 6) matches the expression that represents the number x increased by 6, and then doubled.
Given that : "a number x increased by 6, and then doubled," perform the operations in the correct order.
To represent the given scenario of "a number x increased by 6, and then doubled," required to follow the steps:
Step 1:
Let the number be x.
Increase the number x by 6:
x + 6.
Step 2 :
Double the result by multiply the expression:
(x + 6)2,
Remove brackets by BODMASS gives:
2* x + 2 *6
On multiplying gives:
2x+12
ON taking common factors 2 gives:
2(x+6)
Therefore, the correct expression is 2(x + 6).
Option C) 2(x + 6) matches the expression that represents the number x increased by 6, and then doubled.
Learn more about algebraic expressions here:
https://brainly.com/question/20515311
#SPJ6.
x4 + x2 - 6x² – 4x+8 divided by x – 2
Answer:
[tex] \frac{6x - 6x^{2} }{x - 2} [/tex]
Step-by-step explanation:
[tex] \frac{4x + 2x - 6x^{2} }{x - 2} [/tex]
[tex] \frac{6x - 6x^{2} }{x - 2} [/tex]
The X coordinate of a point P on X axis is 4 and the y coordinate of a point Q on y axis is 3. Find the distance of PQ.
Answer:
5 units
Step-by-step explanation:
Since The X coordinate of a point P on X axis is 4 and the y coordinate of a point Q on y axis is 3 the points are
P (4 , 0) and Q(0 , 3)
The formula to calculate distance between two points
[tex]PQ=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\PQ=\sqrt{(0-4)^2+(3-0)}\\PQ=\sqrt{(4)^2+(3)^2}\\PQ=\sqrt{16+9} \\PQ=\sqrt{25} \\PQ=5\ units\ \\[/tex]
IMPORTANT!
As we take the square root of 25 we get two values +5 and -5 we always take the positive value because distance can never be negative.
Diego measured the length of a pen to be 22 cm. The actual length of the
pen is 23 cnd which of these is closest to the percent error for Diego's
measurement?
Answer:
95.7 percent accurate
Step-by-step explanation:
Answer:
4.3%
Step-by-step explanation:
please solve for x
x+19=-9
Answer:
x=-28
Step-by-step explanation:
Answer:
x=-28
Step-by-step explanation:
Lin bought x grams of sugar. Jada bought 3⁄4 more than that. Select all equations that represent the relationship between the amount of sugar that Lin bought, x, and the amount of sugar that Jada bought, y.
Answer:
y = 7/4xStep-by-step explanation:
Lin bought x grams of sugar.
Jada bought 3⁄4 more than Lin bought.
The equation:
y = x + 3/4x ⇒ y = 7/4x A=2nr+nrl
...........
Answer:
A=ynr which XW RT XW informing
Need Help ASAP
Morgan arrived at her destination at 5:45 pm. If she left at 4:48 pm on the same day, how long did the journey take?
I'm not too good at these at all :(