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solve 3-(3x-4)=2x+3(3x-7)
pls help and show steps will mark brainliest
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Answer: x=2
Step-by-step explanation:Step 1: Simplify both sides of the equation.
3−(3x−4)=2x+3(3x−7)
3+−1(3x−4)=2x+3(3x−7)(Distribute the Negative Sign)
3+−1(3x)+(−1)(−4)=2x+3(3x−7)
3+−3x+4=2x+3(3x−7)
3+−3x+4=2x+(3)(3x)+(3)(−7)(Distribute)
3+−3x+4=2x+9x+−21
(−3x)+(3+4)=(2x+9x)+(−21)(Combine Like Terms)
−3x+7=11x+−21
−3x+7=11x−21
Step 2: Subtract 11x from both sides.
−3x+7−11x=11x−21−11x
−14x+7=−21
Step 3: Subtract 7 from both sides.
−14x+7−7=−21−7
−14x=−28
Step 4: Divide both sides by -14.
−14x
−14
=
−28
−14
x=2
Help pls
Part A: Show another way to find the slope of the line that passes through the points listed in the table. Your way must be different from Avery's method.
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Step-by-step explanation:
Slope of line= (y2-y1)/(x2-x1)
= (45-18)/(20-8)
= 27/12
= 9/4
Can anybody help me please with question 2 please and thank you .I would really appreciate it so much. Please and thank you
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Answer:
See below.
Step-by-step explanation:
See image for labels (labels are in blue).
Statements: Reasons:
1) [tex]T\text{ is the midpoint of } \overline{ZC}[/tex] Given
2) [tex]\overline{GT}\perp\overline{ZC}[/tex] Given
3) [tex]\angle GTZ\text{ and } \angle GTC\text{ are right angles}[/tex] Def. of Perpendicular Lines
4) [tex]\overline{ZT}\cong\overline{TC}[/tex] Def. of Midpoint
5) [tex]\angle GTZ\cong\angle GTC[/tex] Right Angles Are Congruent
6) [tex]\overline{TG}\cong\overline{TG}[/tex] Reflexive Property
7) [tex]\Delta TGZ\cong\Delta TGC[/tex] SAS Congruence
And we're done!
Answer:
Sorry that looks a bit confusing though
Step-by-step explanation:
I need help with my question
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Can someone help, I don’t know what I’m doing wrong.
Given the following least-squares regression line, how many seconds does this model predict a 7-foot pendulum would take to complete one period?
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Answer:
the answer is the 1 with the check on it
11.2 seconds given model predicts a 7-foot pendulum that would take to complete one period.
The correct answer is option (D)
What is regression?"It is statistical model which is used to determine the relationship between variables."
What is least square method?"The least squares method is a mathematical regression analysis used to determine the line of best fit for a set of data."
Logarithm property:If log x = b, then x = (10)^b
Given : the least-squares regression line,
log Time = 0.699 + 0.500 log(Length)
We need to find the time when given model predict a 7 foot pendulum would take to complete one period.
Here, Length = 7 ft
Using given model,
⇒ log Time = 0.699 + 0.500 log(7)
⇒ log Time = 0.699 + (0.5 × 0.8451)
⇒log Time = 0.699 + 0.423
⇒ log Time = 1.122
⇒ Time = [tex]10^{1.122}[/tex]
⇒ Time = 13.2 seconds
Therefore, the correct answer is option (D) 13.2 seconds.
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Andre wants to buy a $230 MP3 player. He has $50 and will save $30 per month. Write an equation in slope intercept form to determine how much Andre will have to save.
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Answer:
Step-by-step explanation:
A=230
230-50=180
He will have to save 180
He can save 180 in :
180:30=6 mounths
Answer:
y=30x+50
Step-by-step explanation:
he has a base number of 50 dollars starting out (b) and he will gain 30$ once a month (x)
What is -y + y.............
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Answer:
the answer would be 0
If you are buying at item at a store for a price of $21, and there is a 8.7% tax added on top, what would be the total amount due at the register, to the nearest cent?
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Answer:
22.83 I think
Step-by-step explanation:
You buy 70 of your favorite songs from a Web site that charges $0.99 for each song. What is the cost of 70 songs? Use mental math.
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Answer:
69.3
Step-by-step explanation:
70-0.7
Answer:
$69.3
Step-by-step explanation:
I did mental math
Mr. Williams's class has 12 girls and 17 boys. He plans to randomly select one student to take notes each day for the class
notebook. If all students are present, what is the probability that he randomly selects a girl to take notes on the first day of
class?
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Answer:
12/29 chance or 0.413793103
Step-by-step explanation:
12+17=29
17/29 boys
12/29 girls
Solve the linear equation.
45 = -( 7x + 1) +4(-8x-8)
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Answer:
Today: Monday, 12 October 2020
Hour: 13.35 WIB (in Indonesian)
_________________________
If 1 – 2i is a root of 3x2 + ax + b = 0, find the value of b.
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Answer:
a=−(1+1)=−2
b=(1+1)=2
Step-by-step explanation:
Show work on y=-4x-1
Find the slope
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m=-4. Or atleast that’s what I’ve heard.
⚠️⚠️ ANSWER PLEASE question in image ( please explain ? ? )⚠️⚠️
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Answer:
i cant see the picture
Step-by-step explanation:
sowey
Answer:
(0,-2)
Step-by-step explanation:
Is anyone able to help me with finding the volume of the triangular prism
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Answer:
1296 m³
Step-by-step explanation:
Volume = area * height.
Take any of the given faces. I have taken 12m & 12 m.
Area of this face = 1/2 * 12m * 12m
= 72 m²
Height = 18 m.
Thus,
Volume = 72m² * 18m = 1296 m³
here are 10 numbers 3 7 2 4 7 5 7 1 8 8
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The table represents a linear function.
[ x y ]
-----------
-2 8
-1 2
0 -4
1 -10
2 -16
-----------
What is the slope of the function?
–6
–4
4
6
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See attached picture
Ricky is inviting 8 friends to a party. If each friend will get 6 cookies and in each box are 10 cookies, how many boxes will Ricky need to get?
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Answer:
5
Step-by-step explanation:
8 times 6 is 48. 5 boxes times 10 in each one is 50 cookies.
Number of boxes Ricky needs to get to a party is equals to 5 boxes.
What is word problem?
" A word problem is a mathematical problem in which we represents the real life examples with the help of mathematical operation."
According to the question,
Number of friends invited in a party = 8
Number of cookies given to each friend = 6
Total number of cookies required for 8 friends = 8 × 6
= 48 cookies
Number of cookies in each box = 10 cookies
Number of boxes for 1 cookie = 1 / 10
Number of boxes for 48 cookies = (1 / 10) × 48
= 4.8
= 5 boxes (Number of boxes cannot be
in decimals)
Hence, number of boxes Ricky needs to get to a party is equals to 5 boxes.
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The following is the correct way to show the product for 0.297 times 7.1
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Answer:
True
Step-by-step explanation:
True
No, This is not the correct way to solve the product of 0.297 and 7.1.
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
To solve the product for 0.297 times 7.1.
So, The product for 0.297 times 7.1 is,
⇒ 0.297 × 7.1 = 2.1087
But here the product for 0.297 times 7.1 is 21.087.
So, This is not the correct way.
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write an equation of the quadratic function that has x-intercepts 5-i√2 and 5+i√2
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Answer:
f(x) = x² - 10x + 27
Step-by-step explanation:
Given the x- intercepts of f(x) are x = a and x = b, then the factors are
(x - a) and (x - b) and f(x) is the product of the factors, that is
f(x) = (x - a)(x - b)
Here the x- intercepts are 5 - i[tex]\sqrt{2}[/tex] and 5 + i[tex]\sqrt{2}[/tex] , thus the factors are
(x - (5 - i[tex]\sqrt{2}[/tex] )) and (x - (5 + i[tex]\sqrt{2}[/tex] )) , that is
(x - 5 + i[tex]\sqrt{2}[/tex]) and (x - 5 - i[tex]\sqrt{2}[/tex] , then
f(x) = (x - 5 + i[tex]\sqrt{2}[/tex] )(x - 5 - i[tex]\sqrt{2}[/tex] ) ← expand using FOIL
= (x - 5)² - 2i² ← i² = - 1
= x² - 10x + 25 + 2
= x² - 10x + 27
A man drove his car a distance of 366 miles in 6 hours. If continuing at this rate is possible, he will travel miles in 7 hours
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Answer:
its 427 since 366 divided by 6 is 61 and thats the rate multiply it by the hours so its 42
Answer: 427 miles
Step-by-step explanation:
You simply divide 366 by 6,
Then, multiply that number by 7
366/6 = 61
61 * 7 = 427
i need help helping my brother asap
Evaluate the equation.
7.15e = 64.35
A. e = 8
B. e = 9
C. e = 460.0125
D. e = 460.1025
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I NEED HELP PLEASE ITS DUE AT 1:00am
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Answer:
5(4) + 5(8)
Step-by-step explanation:
Distributive property is a(b + c) = ab + ac. The beginning value distributes to the other values inside the parentheses. Hope this helped!
Mindy spent $6.24 for a new binder, $1.95 for a notebook, and $5.59 for a new pack
of her favorite mechanical pencils. Estimate ABOUT how much did she spend?
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Answer:
$14.20
Step-by-step explanation;
Rounding$6.24=$6.20
$1.95=$2.00
$5.59=$6.00
So now we have done our rounding, We just have to add them together now.
($6.20+$2.00+$6.00=$14.20)
Answer:
Mindy spent around $13
Step-by-step explanation:
I just added up all the whole numbers.
But I noticed that it is ALMOST $2 for a notebook.
So, even though the sum of all the whole numbers is 12, I assumed it would be more than 12.
So Mindy spent around $13
Hope I helped :)
Please consider Brainiest :)
what is -21222 divided by -34627?
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Answer:
0.6128743466
Step-by-step explanation:
Answer:
0.6128743466
Step-by-step explanation:
[tex]\frac{-21222 }{-34627}[/tex] =0.6128743466
Negative divided by a negative makes the answer positive
WILL MARK BRAINLIEST, PLEASE EXPLAIN HOW YOU GOT YOUR ANSWER!!!
The equation for lines can be written as y = –6x + 2. Line t includes the point (–6, –7) and is perpendicular to line s. What is the equation of line t?
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y=1/6x-6
Explanation:
What we know:
- Equation for line S: y=-6x+2
- Line T is perpendicular to line S
- Line T passes through the point (-6,-7)
To find the answer, we would need to understand two things, the first being what exactly is going on with the equation: y=-6x+2.
It’s organized in slope-intercept form, which is y=mx+b. Here’s what the variables mean:
Y=the y variable
M=the slope
X=the x variable
B=the y-intercept (the point on the line that crosses the y axis)
Knowing this, we can look at the equation for line S again: y=-6x+2. -6 is the slope of line S and 2 is the y-intercept of line S.
The second thing we need to understand is that the slope of a second line that is perpendicular to the first line is equal to the NEGATIVE RECIPROCAL of the slope of the first line.
Reciprocal: the “flip” of a fraction where the denominator and the numerator switch places
So, for example, let’s say the slope of line A=6. The slope of the line perpendicular to line A would be -1/6.
Let’s try another example: the slope of line B=-4/5. The slope of the line perpendicular to line B would be 5/4 (because two negatives makes a positive)
And here, for your question, the slope of line S=-6. Therefore, the slope of line T would be 1/6.
Awesome! We found the slope, which means so far, the equation of line T looks like this:
y=1/6x+b
All we need now is the y-intercept, which is “b” in the equation y=mx+b.
To do this, we plug in the point that the question provided us, (-6,-7), and solve. We would plug in -7 as the y variable and -6 as the x variable.
y=1/6x+b
-7=1/6(-6)+b
1) multiply 1/6 and -6
-7=-1+b
2) add 1 to both sides of the equation to isolate b
-6=b
Aha! There we have it, -6 is the y-intercept of line T.
Now, we have completed our equation:
y=1/6x-6
I hope this helps! Please comment if you have any questions.
(5, -8) m = -3
Write an equation in point-slope form
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Answer:
y + 8 = - 3(x - 5)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - 3 and (a, b) = (5 - 8) , thus
y - (- 8) = - 3(x - 5) , that is
y + 8 = - 3(x - 5)
75g of flour and 135 ml of milk are used to make 12 biscuits. How much flour is needed to make 30 biscuits?
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Help me out look at the picture I wanna go to sleep
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Answer:
It's B
Step-by-step explanation:
hope that helps :)
and go to sleep already <3
Answer:
B
Step-by-step explanation:
HELP PLEASE ASAP DUE AT MIDNIGHT!!!!!!!!!
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Step-by-step explanation:
20) <
21) <
22)-20,√26,√35,13.5
23)-5.25,3/2,√6,5
24)4³=64
5³=125
perfect squares between them:
8²=64
9²=81
10²=100
11²= 121