Answer:
If area = length * width that means the answer is 4x * 5x = 20x².
Brainliest will be given i need answer ASAP please.
Simplify 84,375/325 to its lowest multiple Example 16/4 = 4/1
Answer:
3375/13
Step-by-step explanation:
it's found though this equation [tex]\frac{84375/25}{325/25}[/tex]
Answer:
[tex]3375/13[/tex]
Step-by-step explanation:
[tex]84,375/325[/tex]
Divide the numerator and denominator by 25.
[tex]3375/13[/tex]
[tex]=259.615385[/tex]
What is the value of x when y=31
Answer:16
Step-by-step explanation:
32/16=2
8*2=16
Hope that helps :D
Answer:
16
Step-by-step explanation:
Direct variation
y = kx
16 = k*8
Divide each side by 8
16/8 = 8k/8
2 = k
The equation is y =2x
y =2x
Let y =32
32 = 2x
Divide by 2
32/2 = x
16 =x
x square + 4 x - 12 all over x squared - 2x
Answer:
[tex]\frac{x+6}{x}[/tex]
Step-by-step explanation:
=> [tex]\frac{x^2+4x-12}{x^2-2x}[/tex]
=> [tex]\frac{x^2+6x-2x-12}{x(x-2)}[/tex]
=> [tex]\frac{x(x+6)-2(x+6)}{x(x-2)}[/tex]
=> [tex]\frac{(x-2)(x+6)}{x(x-2)}[/tex]
Cancelling (x-2)
=> [tex]\frac{x+6}{x}[/tex]
A bookstore has marked down the price for all the books in a certain series by 15%. How much is the discount on a book that normally costs $18.00? After the discount, how much would the book cost?
Answer:
just multiply 18.00 by 15 and than divide 100
Answer:
Discount = $2.70
Price = 18 - 2.70 = $15.30
Step-by-step explanation:
18 x 0.15 = 2.7
The sequence of the differences, 2, 4, 8, 16, 32, … is a geometric sequence with:
Answer:
The first term as 2.
Pattern: Multiply the previous term and 2 to get the next term.
Step-by-step explanation:
The pattern is every term is 2× the previous term.
The sequence of the differences, 2, 4, 8, 16, 32, … is geometric. The pattern is every term is 2 times the previous term.
What is geometric series?The geometric series is a series in which the ratio of two consecutive numbers is constant.
The sequence of the differences, 2, 4, 8, 16, 32, … is geometric.
So, The ratio of two consecutive numbers is constant.
r = 4/2 = 2
r = 8/4 = 2
Thus, The pattern is every term is 2 times the previous term.
Learn more about geometric series;
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apply the distributive property to factor out the greatest common factor for 9+12n I need an expression too
Answer:
3(3+4n)
Step-by-step explanation:
Please answer asap thanks
Answer:
V = 200 pi units ^3
Step-by-step explanation:
The volume of a cone is given by
V = 1/3 pi r^2 h
V = 1/3 pi ( 10 ^2) (6)
V = 1/3 pi (100) *6
V = 200 pi
straight line graphs: find the equation of the lines shown
Answer:
1. y = -2n + 9
2. y = (1/2)x + 1/2
Step-by-step explanation:
1.
The equation of a line is denoted by y = mx + b, where m is the slope and b is the y-intercept.
Slope is calculated by taking two coordinates and dividing the difference of the y-coordinates by the difference of the x-coordinates. The y-intercept is where the line intersects the y-axis.
Let's choose any two points on the line: (4, 1) and (3, 3). Then:
slope = m = (3 - 1) / (3 - 4) = 2 / (-1) = -2
Now, we can also see that at the point (0, 9), the line intersects the y-axis, so that means b = 9.
The equation is thus y = -2n + 9.
2.
Let's again choose any two points to find the slope: (1, 1) and (3, 2). Then:
slope = m = (2 - 1) / (3 - 1) = 1/2
We can see that the line crosses the y-axis at the point (0, 1/2), so that means b = 1/2.
The equation is thus y = (1/2)x + 1/2.
~ an aesthetics lover
Answer:
1. y = -2x + 9
2. y = (1/2)x + 1/2
Step-by-step explanation:
There was a mistake on the last one so I would like to correct it it is
y= -2x+9
The other one said -2n its -2x
The snail moved 6 inches in 120 minutes. What was the average speed of the snail in inches per minute
20 of an inch per minute
1
O z of an inch per minute
O2 inches per minute
O 20 inches per minute
Answer:
The answer is; the snail moved 1 inch every 20 minutes.
Step-by-step explanation:
120 divided by 6 is 20
Answer:
A) 1 Over 20 of an inch per minute
Step-by-step explanation:
I took this test and got 100
Kim places $500 in a bank account that pays 3% simple interest per year a) how much interest will she earn each year? b) how much will she have in her account after 1 year?
Answer:
a) SI = prt
SI = 500 x .03 x 1
SI = 15
b) Amount in her account after 1 year
500 + 15 = 515
HOW DO U COMBINE LIKE TERMS in math?? DO NOT LOOK IT UP :) THX
Answer:
See below
Step-by-step explanation:
"Like terms" are terms with the same variable or exponents.
You can add or subtract these just like you would with regular numbers.
Examples:
2x + 4x = 6x
5xy + 7xy = 12xy
6[tex]x^{2}[/tex] + 5[tex]x^{2}[/tex] = 11[tex]x^{2}[/tex]
Let me know if you need more examples or have any questions :)
What is the units digit of $7^7$ when expressed as an integer?
Answer:
3
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
Just stick it into a calculator lol
Mr. Bloop can high jump 5.75 feet. How far short is that of Charles Austin's record of 7 ft 10 in?
Answer:
5.75 feet is the same as 5 ft 9 inches (because 12 in = 1 ft and 0.75 * 12 = 9 so its 9 in). 7 ft 10 in - 5 ft 9 in = 2 ft 1 in.
Find X? 40 Points :)
Answer:
x = 2 sqrt(7)
Step-by-step explanation:
since the right triangles are similar
hyp leg
------ = ---------
leg part
(6+8) x
--------- = ----------
x 2
Using cross products
x^2 = (6+8) *2
x^2 = 28
Take the square root of each side
x = sqrt(28)
x = sqrt(4) sqrt(7)
x = 2 sqrt(7)
Answer:
x= 69420
Step-by-step explanation:
bc it can be
3p+5+4p-2 what is the answer
Answer:
7p + 3
Step-by-step explanation:
3p+5+4p-2
Rearrange the terms.
3p + 4p + 5 - 2
Add or subtract like terms.
(3+4)p + 3
(7)p +3
Jorden is cutting a 2 m by 1 1/4 m piece of rectangular paper into two pieces along its diagonal
Answer:
2.36 =C or your diagonal side
Step-by-step explanation:
You have rectangle that is
2 by 1.25
2² + 1.25² =C²
4 + 1.5625=C²
5.5625 = C²
2.36 =C
What is one value that makes the fraction (4x-8)/(x^2+x-42) undefined? Plz help me I'll mark brainliest! And plz explain how you did it plz ty!
Answer:
x = 6
Step-by-step explanation:
To make a fraction undefined, the denominator would have to be equivalent to zero. If that is so, x^2 + x - 42 would have to equal 0, and we would have to solve for the value of x;
[tex]x^2 + x - 42 = 0,\\Factored Equation = \left(x-6\right)\left(x+7\right),\\\left(x-6\right)\left(x+7\right) = 0,\\\\Zero Factor Principle, \\x - 6 = 0, and, x + 7 = 0\\\\x = 6, x = - 7\\\\Solution = Either, 6 / - 7[/tex]
We can take x to be either 6 or - 7, but as the question asks us to state only one value, I will take x = 6.
The volume of the cylinder is 230 cubic units. What is the volume of the
cone? Round to the nearest enth if necessary.
Answer:
Step-by-step explanation:
The formula for determining the volume of a cylinder is expressed as
Volume = πr²h
Where
r represents the radius of the cylinder
h represents the height of the cylinder
π is a constant
The formula for determining the volume of a cone is expressed as
Volume = 1/3πr²h
Where
r represents the radius of the cone
h represents the height of the cone
This means that the volume of the cone is 1/3 × volume of cylinder. Since the volume of the given cylinder is 230 cubic units, then
Volume of cone = 1/3 × 230 = 76.7 cubic units
please help me whats the answer for jim has 100 cards there is a whole number from 1 to 100 on each card no cards have the same number jim puts a star on every card has a multiple of 3 on it he puts a circle on every card that has a multiple of 7 on it what number are on the cards that have both a star and a circle on them the final line on your answer must list only these numbers
Answer:
4
Step-by-step explanation:
Multiples of 7 and 3 are 21, 42, 63, 84
Hope this helps.
Answer:
21, 42, 63, 84
Step-by-step explanation:
Cards with both star and circle are multiples of both 3 and 7, ie 3*7= 21
21, 21*2= 42, 21*3= 63, 21*4= 84
So 21, 42, 63 and 84 are the required numbers
6 - + 5y - 2y help me answer this question please
Answer:
Step-by-step explanation:
6 - 5y - 2y
= 6 - 7y
hope this helps
plz mark it as brainliest!!!!!!!
Answer:
[tex]5x+3y[/tex]
Step-by-step explanation:
[tex]6x-x+5y-2y[/tex]
The coefficient of -x is -1.
[tex]6x-1x+5y-2y[/tex]
Factor the variables.
[tex]x(6-1)+y(5-2)[/tex]
Subtract the numbers.
[tex]x(5)+y(3)[/tex]
[tex]5x+3y[/tex]
The answer is 5x+3y.
Work of the size of one exterior angle
Answer:
<x = 36°
Step-by-step explanation:
In a regular decagon, Every interior angles is equal to 144.
So,
<x + 144 = 180 [Angles on a straight line]
<x = 180-144
<x = 36°
which represents the equation of the line?
Answer:
D: y= -2x -1
Step-by-step explanation:
The line crosses the y axis at -1 and using the "rise over run" phrase you can tell that the next point is 2 up and 1 over (2/1 =2) the line is also negative because it moves down from left to right. Therefore, y= -2 -1
Solve x^4 -3x^2 +2=0 using substitution. U=
Answer:
U = x^2
hope this helped!
Answer:
x^2
Step-by-step explanation:
The person above me is spitting mad facts and da TRUTH and also UNUS ANNUS
Isaac applied the steps below to find the product of (4.2)(-5.4).
.
Step 1: (4.2)(-5.4) = (-5.4)(4.2)
Step 2:
= (-5.4)(4) + (-5.4)(0.2)
Step 3:
= (-21.6) + (-1.08)
Step 4:
=-22.68
Which step shows where Isaac applied the distributive property?
Step 1
0 0
Step 2
Step 3
Step 4
The answer is step 2. hope it helps.
Answer:
step 2
Step-by-step explanation:
PLEASE HELP! Use a graphing calculator to find an equation of the line of best fit for the data in the table. Round the slope and y-intercept to the nearest tenth. Then Identify and interpret the correlation coefficient.
X- 10.1 9.8 9.7 9.4 8.9 8.7 8.4 8.1
Y- 4.3 4.8 5.3 5.2 5.6 5.8 6.1 6.3
The equation of the line of best fit is y=
To the nearest thousandth, the correlation coefficient is r=
Answer:
ŷ = -0.895X + 13.600
Slope = -0.9
Intercept = 13.6
r = - 0.964
Step-by-step explanation:
Given the data:
X- 10.1 9.8 9.7 9.4 8.9 8.7 8.4 8.1
Y- 4.3 4.8 5.3 5.2 5.6 5.8 6.1 6.3
Inputting the data given into the online regression calculator :
The equation of line of best fit :
ŷ = -0.895X + 13.600
Slope = - 0.9(to the nearest tenth)
Intercept = 13.6 (to the nearest tenth)
The correlation Coefficient 'r' of the data supplied is - 0.9643, which implies that a strong negative correlation exists between the dependent and independent variables.
r = - 0.964 (to the nearest thousandth)
Inputting the data into the STAT then Fit Data function of the HP 50g
Graphing Calculator.
The equation of the line of best fit is; y ≈ 13.6 - 0.9·xThe correlation coefficient is r ≈ -0.964The meaning of the strong negative correlation is that the x-values
of the data is decreasing, while the corresponding y-values of the data
increasing.
Reasons:
The least squares regression line equation is the best fit line for the data
The formula for the least squares regression line is [tex]\hat Y = b \cdot X + a[/tex]
Where;
[tex]b = \dfrac{n \cdot \sum X \cdot Y - \left (\sum X \right )\left (\sum Y \right )}{n \cdot \sum X^{2} - \left (\sum X \right )^{2}}[/tex]
[tex]a = \dfrac{\sum Y - b \cdot \sum X}{n}[/tex]
n = The sample size
Inputting the given data into the function Fit Data on a graphing calculator,
by editing ∑DAT.
The left column, represent the x-values, and right column represent the y-
values as follows;
[tex]\begin{array}{|c|cc|} \mathbf{Column \ 1}&&\mathbf{Column \ 2}\\10.1&&4.3\\9.8&&4.8\\9.7&&5.3\\9.4&&5.2\\8.9&&5.6\\8.7&&5.8\\8.4&&6.1\\8.1&&6.3\end{array}\right][/tex]
After inputting the data as above, press enter.
Move the pointer to the Model options line, select choose to choose the
Linear Fit model by selecting OK.
Select OK again for the calculator to do the calculations.
The least squares regression line equation given by the calculator is
presented as follows;
y = 13.5998272884 - 0.894645941278·x
The slope and the y-intercept rounded to the nearest tenth gives;
y = 13.6 - 0.9·xThe slope = -0.9The y-intercept = 13.6Correlation coefficient:
The correlation coefficient is given from the data using the following
formula;
[tex]r = \dfrac{n \cdot \sum X \cdot Y - \left (\sum X \right ) \cdot \left (\sum Y \right )}{\sqrt{n \cdot \sum X^{2} - \left (\sum X \right )^{2}\times n \cdot \sum Y^{2} - \left (\sum Y \right )^{2}}}[/tex]
From the graphing calculator, we have the correlation coefficient, given as
follows;
Correlation: (-0.964276229529)
Therefore, to the nearest thousandth;
The correlation coefficient, r ≈ -0.964The high negative value of the correlation coefficient indicates a strong
and near perfect relationship between the variables, x, and y, such that we
have;
A decrease in the value of x leads to a proportional increase in the value of y.Learn more here:
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8(4-x)=7x+2 solve for X
Answer: x= 2
Step-by-step explanation:
(8 X 4)+[8 X (-x)]= 7x+2
32- 8x = 7x+2
-8x-7x =2-32
-15x = -30
x= 2
Answer:
x=2
Step-by-step explanation:
[tex]8(4-x)=7x+2[/tex] Original equation
[tex]32-8x=7x+2[/tex] Distributive property on left
[tex]30=15x[/tex] Combine like terms and isolate the variable (x)
[tex]2=x[/tex] Divide both sides by 15 (Division Property of Equality)
Elijah uses 2 pints of stain on each table that he makes . How many tables can he paint with 1 gallon of stain ? sets
Answer:
4 sets
Step-by-step explanation:
1 gallon contains 8 pints. It takes 2 pints per table, so we should divide 8 by 2.
By doing this, we get 4, therefore he can stain 4 sets of tables with a gallon of stain.
Given that ABCD is a rhombus, find the value of x.
Answer:
C
Step-by-step explanation:
The diagonals of a rhombus are perpendicular bisectors of each other.
Thus the angle at the intersection of the diagonals is 90°
The sum of the 3 angles in a triangle = 180°
Sum the angles in the lower triangle and equate to 180, that is
90 + x + x + 40 = 180
2x + 130 = 180 ( subtract 130 from both sides )
2x = 50 ( divide both sides by 2 )
x = 25 → C
The value of x is 25.
What are some of the properties of a rhombus?
All four sides are equal.Diagonals bisect each other at 90°.Given
ABCD is a rhombus,
∠CAD = x°,
∠BDA = (x + 40)°.
Find the equation in x
Let the point where the diagonals intersect be E.
Then, using the property of the rhombus ∠AED = 90°.
We know, in a triangle that the sum of all the three interior angles equals 180°. So, we get,
∠AED + ∠BDA + ∠CAD = 180°
⇒ ∠BDA + ∠CAD = 180° - ∠AED
= 180° - 90° = 90° (∠AED = 90°)
Put the given values of these angles,
(x + 40)° + x° = 90°.
This is the equation to be solved to obtain x.
Solve for x
(x + 40)° + x° = 90°
⇒ (2x)° = 90° - 40° = 50°
⇒ x° = (50 / 2)°
⇒ x = 25.
The required value of x is 25.
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Decrease £248 by 30%
Answer:
173.6
Step-by-step explanation:
0.7(248)
173.6
Answer:
£ 173.6
Step-by-step explanation:
£248 *0.30= 74.4
£248 -74.4 =173.6
if 15% of a number is 100, find 4% of the number
Answer:
26.6667
Step-by-step explanation:
.15x=100
Divide each side by .15.
x=666.6667
.04(666.6667)=26.6667
Answer:
26(approx.)
Step-by-step explanation:
15/100 times x = 100
3/20 times x = 100
3x/20 = 100
3x = 2000
X= 666 2/3
So,
4/100 x 666.67
1/25 x 666.67 = 26