Answer:
7
Step-by-step explanation:
variable = 84/12
= 7
84 ÷ 12 = 7
Verification
12 × 7 = 84
Complete the space by dividing, 12 x 7 = 84: *
solve 3(5y+2)–y=2(y–3)
Answer:
y= -1
Step-by-step Explanation:
3(5y +2)-y=2(y-3)
Distribute- 15y +6-y=2y -6
Combine variables- 15y-2y-y=-6-6
Add everything together- 12y= -12
Divide- y= -1
Answer:
y = -1
Step-by-step explanation:
Step 1. Expand the brackets.
3(5y + 2) - y = 2(y - 3)
(3 x 5y) + (3 x 2) - y = (2 x y) - (2 x 3)
15y + 6 - y = 2y - 6
Step 2. Simplify the expanded brackets (not always necessary but is in this case).
15y + 6 - y = 15y - y + 6 = 14y + 6
So
14y + 6 = 2y - 6
Step 3. Solve the equation.
14y + 6 = 2y - 6
+ 6 to both sides
14y + 12 = 2y
- 14y from both sides
12 = -12y
÷ 12 on both sides
1 = -y
flip the negative
-1 = y
Step 3. Write your answer.
y = -1
The length of a rectangle is 6 feet more than three times the width of the
rectangle. The length of the rectangle is 24 feet. What is the width of the
rectangle?
Answer:
width = 6 feetStep-by-step explanation:
let l be the length of the rectangle
let w be the width of the rectangle
The statement
The length of a rectangle is 6 feet more than three times the width of the
rectangle is written as
l = 6 + 3w
From the question
l = 24 feet
Substitute the value into the above formula and solve for the width
That's
24 = 6 + 3w
3w = 24 - 6
3w = 18
Divide both sides by 3
w = 6
Therefore
width = 6 feetHope this helps you
PLEASE HELP!!!!!!! Figure B is a scaled copy of Figure A. What is the scale factor from Figure A to Figure B?
Answer:
1:4
Step-by-step explanation:
Find the ratio of corresponding sides
[tex]\frac{10}{40}=\frac{1}{4}\\\\\\\frac{11}{44}=\frac{1}{4}\\\\\\\frac{18}{72}=\frac{1}{4}\\\\\[/tex]
Scale factor:
1:4
Answer:
4
To find the scale factor, we need to know what number we multiply each side length in Figure AAA by to get the corresponding side length in Figure BBB.
Let's see how the corresponding sides relate:
10×4
11×4
18×4
=40
=44
=72
What is the measure in degrees of angle EDF?
Answer:
20 degrees.
Step-by-step explanation:
Since these triangles are similar, they will have congruent angles.
Since BAC is corrosponding to EDF, they will have the same angle measurment.
BAC = 20, so EDF = 20
Answer:
EDF = 20
Step-by-step explanation:
If the triangles are similar, the angle measurements have to be equal
<A = <D
<B = <E
<C = <F
Since BAC = 20, <A = 20 that means D = 20
EDF = 20
Find the mistake made in the steps to solve the equation below.
61 - 1 = -21 + 9
81 - 1 = 9
80 = 10
1. Addition property of
equality
2. Addition property of equality
3. Division property of equality
to
I
CHA
4. Simplification
OA. The justification for step 2 is incorrect and should be the subtraction property of equality.
OB. Step 3 is incorrect and should be r = 100
OC. Step 2 is incorrect and should be r = 8.
OD. The justification for step 3 is incorrect and should be the multiplication property of equality,
Answer:
A
Step-by-step explanation:
A
The mistake made in the justification for step 2 is incorrect and should be the subtraction property of equality. which is the correct answer would be an option (A).
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
The equation is given in the question
6x - 1 = -2x + 9
Addition property of equality
8x - 1 = 9
Subtraction property of equality
8x = 10
Division property of equality
x = 10/8
Simplification
x = 5/4
Thus, the mistake made in the justification for step 2 is incorrect and should be the subtraction property of equality.
Hence, the correct answer would be option (A).
Learn more about the equation here:
brainly.com/question/13947055
#SPJ5
f(x) = 7x − 13. Find f−1(x)
A hubcap has a radius of 14 centimeters. What is the area of the hubcap?asap pls
Answer:
The area of the hubcap is 196π or 615.7521601
Step-by-step explanation:
You can use A=πr² to find the area of a circle. So that would mean that A equals 14². 14²=196. If the answer is in π form, then the answer is 196π. If not then its 196·π. 196·π=615.7521601
Hope that helps!
Answer:
The area of the hubcap is about 615.44 cm²
Step-by-step explanation:
A = πr²
Use the formula.
A = π(14)²
Substitute. Use 14 for r.
A ≈ 3.14 × 14²
Substitute. Use 3.14 for π.
A ≈ 3.14 × 196 Evaluate the power.
A ≈ 615.44 Multiply.
Four consecutive even integers are such that the sum of the second and fourth is 76. What is the sum of the first and third integers?
Answer:
72
Step-by-step explanation:
Consecutive even integers have a difference of 2 between them
let n be the first integer, then
n + 2, n + 4, n + 6 are the second, third and fourth, then
n + 2 + n + 6 = 76 ( sum of second and fourth )
2n + 8 = 76 ( subtract 8 from both sides )
2n = 68 ( divide both sides by 2 )
n = 34
Thus the 4 even integers are
34, 36, 38, 40
sum of first and third = 34 + 38 = 72
|4x + 8| + 12= 4 I subtracted 12 by 4 and got -8. Would I still solve the equation or would it be no solution?
Answer:
no solution
Step-by-step explanation:
|4x + 8| + 12= 4
Subtract 12
|4x + 8| = -8
An absolute value must be non negative
Since ours is negative, there is no solution
Evaluate. 58−(14)2= ________
Answer:
the answer for 58-(14)2=
its = 30
Step-by-step explanation:
58-(14)2. It can also be written as 58-2(14)
58-28
= 30
Read the question and help me, please.
===============================================
Explanation:
Add the equations by adding the terms straight down.
The x terms add to x+x = 2x.
The y terms add to y+(-y) = y-y = 0y = 0, so the y terms go away
The constants add to 5+7 = 12
The z terms add to -z+z = 0z = 0 and those go away as well
After all that adding, we have 2x = 12 which solves to x = 6 after dividing both sides by 2.
Help me please. I don't understand.
Answer:
what is it
Step-by-step explanation:
Find the value of m. A. 32 B. 50 C. 63 D. 74
Answer:
c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
HOPE I HELPED
PLS MARK BRAINLIEST
DESPERATELY TRYING TO LEVEL UP
✌ -ZYLYNN JADE ARDENNE
JUST A RANDOM GIRL WANTING TO HELP PEOPLE!
PEACE!
Joan is filling a 2-liter soda bottle with different colors of sand to make an art project for her class. She has 1,000 milliliters of
red sand, 35 centiliters of blue sand, and 2,5 deciliters of yellow sand in the bottle, but it is not full yet. How many liters of
purple sand will she need to use to have the bottle completely full?
Answer:
0.4 l of purple sand
Step-by-step explanation:
Volume to be filled in:
2 liter = 2000 mlRed sand
1000 mlBlue sand
35 centiliters = 35*10 ml = 350 mlYellow sand
2.5 deciliters = 2.5*100 ml = 250 mlTotal volume filled:
1000 + 350 + 250 = 1600 mlPurple sand needed:
2000 - 1600 = 400 ml = 0.4 lAnswer is 0.4 l of purple sand required
PLZ HELP Find the value of x that makes ΔXYZ~PQR
Answer:
x = 8
Step-by-step explanation:
[tex] \triangle XYZ \sim\triangle PQR... (GIVEN) \\
\therefore \frac{XY}{PQ} = \frac{YZ}{QR}.. (csst) \\
\therefore \frac{20}{30}= \frac{x+6}{21}\\
\therefore \frac{2}{3}= \frac{x+6}{21}\\
\therefore \frac{2\times 21}{3}= {x+6}\\
\therefore 14= {x+6}\\
\therefore 14-6= {x}\\
\therefore 8= {x}\\
\huge \orange{\boxed {\therefore x = 8}} [/tex]
How do I solve this? Please explain step by step,thankyou!
Answer:
Hey there!
Angle x would be 62 degrees because angles in a triangle add to 180 degrees.
Let me know if this helps :)
Answer:
x = 62 degrees
Step-by-step explanation:
Total degrees of a triangle = 180
=> 68.5 + 49.5 + x = 180
=> 118 + x = 180
=> 118 - 118 + x = 180 - 118
=> x = 62
(a+3) (a-3)find the products
Answer:
a^2-9
Step-by-step explanation:
Go to my profile and go to the question where it says “what is the simplified expression.....” and please answer I need help!!
Answer:
Noun. (plural simplified expressions) (mathematics) an expression that has been condensed and shortened, so that all the like terms have been combined.
Step-by-step explanation:
you are welcome!
Answer:
i answered all of them!
Step-by-step explanation:
What is the equation of the circle with center (–2, 5) that passes through the point (–3, 8)?
A scuba diver started her dive at 2{:}42 \text { p.M.}2:42 p.M.2, colon, 42, start text, space, p, point, m, point, end text and finished diving at 3{:}17 \text { p.M.}3:17 p.M.3, colon, 17, start text, space, p, point, m, point, end text How long did the dive last?
Answer:
35 minutes
Step-by-step explanation:
From 2:42 to 3:00, there are 18 minutes and from 3:00 to 3:17, there are 17 minutes so the answer is 18 + 17 = 35 minutes.
Simplify the expression: (5 - 4i) (6 - 2i).
Answer:
22 - 34i
Step-by-step explanation:
note that i² = - 1
Given
(5 - 4i)(6 - 2i) ← expand factors using FOIL
= 30 - 10i - 24i + 8i²
= 30 - 10i - 24i - 8 ← collect like terms
22 - 34i
Answer:
22 - 34i
Step-by-step explanation:
6. Tori and Terry spend the day at the mall. At the end of the ey, se two added up their
purchases and found they spent a total of $107.50, Tori spent $10.00 more fean Tery, Witte
guation that can be used to find how much each girl spent
Answer:
y + (y+10) = 107.50
Step-by-step explanation:
Let y represent Terry's purchases. Then Tori's purchases are (y+10). The sum of their purchases is given by the equation ...
y + (y+10) = 107.50
_____
Then y = 48.75 represents Terry's spending, while y+10 = 58.75 represents Tori's spending.
Name a point on the point
Answer:
B
Step-by-step explanation:
the question is asking to name any point, B is a point that falls on the graph
The population of a city is 1,880,000 what is the value of each of the two 8s in this number how are the two values related
Answer:
The value of the 8 in the front is 800,000 and the value of the second is 80,000. The front value is ten times as big as the second value.
Step-by-step explanation:
Solve for x in the equation below(all in picture).
Answer:
x = - 5, x = 2
Step-by-step explanation:
Using the rules of logarithms
log x - log y = log ([tex]\frac{x}{y}[/tex] )
[tex]log_{b}[/tex] x = n ⇔ x = [tex]b^{n}[/tex]
note that log x = [tex]log_{10}[/tex] x
Given
log (x² + 3x) - log10 = 0, then
log([tex]\frac{x^2+3x}{10}[/tex] ) = 0, thus
[tex]\frac{x^2+3x}{10}[/tex] = [tex]10^{0}[/tex] = 1 ( multiply both sides by 10 )
x² + 3x = 10 ( subtract 10 from both sides )
x² + 3x - 10 = 0 ← in standard form
(x + 5)(x - 2) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x - 2 = 0 ⇒ x = 2
Solution is x = - 5, x = 2
Answer:
The equation has the solution(s) x = - 5, and x = 2
Step-by-step explanation:
Let's start by adding log(10) to either side of the equation --- (1)
[tex]\log _{10}\left(x^2+3x\right)-\log _{10}\left(10\right)+\log _{10}\left(10\right)=0+\log _{10}\left(10\right)[/tex]
= [tex]\log _{10}\left(x^2+3x\right)=\log _{10}\left(10\right)[/tex]
If you recall, one property proves that [tex]\log _{10}\left(10\right):\qu 1[/tex]. We can substitute this value back into the simplified equation --- (2)
[tex]\log _{10}\left(x^2+3x\right)=1[/tex]
We can also apply the logarithmic definition, If logₐ(b) = c then b = aᶜ. Using this definition we receive a further simplified equation --- (3)
[tex]x^2+3x=10^1[/tex]
[tex]x^2+3x=10[/tex]
Solving for the expression we receive the solution(s) x = 2, and x = - 5, our first option.
Note : The first solution is correct, but I wanted to take a slightly different approach
if 3x-9 =12then the value of x is:
Answer:
Hey there!
3x-9=12
3x=21
x=7
Let me know if this helps :)
Answer:
x= 7Step-by-step explanation:
[tex]3x - 9 = 12 \\ collect \: like \: terms \\ 3x = 12 + 9 \\ 3x = 21 \\ divide \: both \: sides \: by \: 3[/tex]
[tex] \frac{3x}{3} = \frac{21}{7} \\ x = 7[/tex]
We run a linear regression and the slope estimate is 0.5 with estimated standard error of 0.2. What is the largest value of b for which we would NOT reject the null hypothesis that β1=b ? (assume normal approximation to t distribution, and that we are using the 5% significance level for a two-sided test; need two significant digits of accuracy)
Answer:
0.9
Step-by-step explanation:
Y = B0 + B1X
B1 is the slope an from the question the slope estimate is 0.5
S.E= standard error at 0.2
At 5percent Level of significance, the z value for the test is equal to 1.96
We are required to find out the largest value of b for which the null hypothesis would be accepted.
0.5 + 1.96 x 0.2
= 0.892
Approximately 0.9
HELP!!!
Which of the following data sets is illustrated by this stem and leaf plot?
Answer:
it will be A. good buddy
Step-by-step explanation:
The data represented by given stem and leaf display is 25, 26, 27, 53, 58, 62, 67, 69, 96, 96, 123. The correct option is B.
What is a stemplot?A stem-and-leaf display, also known as a stem-and-leaf plot, is a technique used to visualize the shape of distribution by displaying data in a graphical fashion, similar to a histogram.
The data represented by the different rows of stem-and-leaf display is,
First row → 25, 26, 27
Second row → 53, 58
Third row → 62, 67, 69
Fourth Row → 96, 96
Fifth Row → 123
Hence, the data represented by given stem and leaf display is 25, 26, 27, 53, 58, 62, 67, 69, 96, 96, 123.
Learn more about Stemplot here:
https://brainly.com/question/9125085
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find the distance between points P(3, 4) and Q(4, -6) If necessary round to the nearest hundredth.
Answer:
10.05 units
Step-by-step explanation:
We can find the distance between these points using the distance formula. The distance formula is:
[tex]\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]
We know that x1 is 3, x2 is 4, y1 is 4, and y2 is -6, so we can substitute inside the equation.
[tex]\sqrt{(4 - 3)^2 + (-6 - 4)^2} \\\\\sqrt{1^2 + -10^2} \\\\\sqrt{1 + 100} \\\\\sqrt{101} \\\\\approx10.05[/tex]
Hope this helped!
Q2) If z is directly proportional to x and z = 12 when x = 3, find the value of x when z = 18.
Answer:
4.5
Step-by-step explanation:
→ Set up the direct proportion equation
z = kx
→ Substitute in the values
12 = 3k
→ Divide both sides by 3 to isolate k
4 = k
→ Substitute the value of k back into the original direct proportion equation
z = 4x
→ Substitute the value of z in
18 = 4x
→ Divide both sides by 4 to isolate x
4.5 = x
Answer:
4.5
Step-by-step explanation: