Which of the following is a true equation?
A. 16 + 4 - 1 = 20
B. 16 + 4 - 1 < 20
C. 16 + 4 - 1 = 19 - 1
D. 16 + 4 - 1 = 20 - 1
Answer:
The correct answer is D. 16 + 4 - 1 = 20 - 1
Step-by-step explanation:
Option A is not a true equation because 16 + 4 - 1 = 19 and not 20.
Option B is not a true equation because we're using the relational sign "less than" that is used by inequations or inequalities.
Option C is not a true equation because 16 + 4 - 1 = 19 and is not equal to 19 - 1 = 18.
Finally, option D is a true equation because 16 + 4 - 1 = 19 and is equal to 20 - 1 = 19.
The correct answer is D. 16 + 4 - 1 = 20 - 1
write in interval notation
(-2,4)
Answer:
- 2 < x < 4
Step-by-step explanation:
We have to write in interval notation of the following interval.
The interval is given by (-2,4) which means the values of the variable, say x, vary from -2 (but not including -2) to 4 (but not including 4).
So, in interval notation this can be written as - 2 < x < 4 (Answer)
Therefore, the values -2 and 4 are the limiting end values of the variable x.
What is the answer for
r(x)=-x–7
Answer:
r(x) = -7
Step-by-step explanation:
r(x) = -x - 7
+ 7 + 7
7 = -x
÷ -x ÷ -x
7/-1 = x
-7 = x
HELP PLEAS
How to calculate the surface area of a cube with a volume of 343 cubic feet?
Answer:
294 square feet
Step-by-step explanation:
If the volume is one side at the 3rd power, then If we know the volume, we calculate the cubic root of 343 that is 7
So 1 side =7
The cube has 6 faces
1 face of the cube is 7*7=49
Six faces =
49*6= 294
Can any one solve this
Answer:
3x+15=90.
3x=75
x=25
Step-by-step explanation:
Answer:
x = 25
Step-by-step explanation:
Triangle = 180 degrees
The square indicates that the angle = 90 degrees
So we know the other two angles have to equal the remaining 90 together.
x + (2x + 15) = 90
3x + 15 = 90
3x = 75
x = 25
yer yerrr help me for 12 points. give me the statement and reason chart.
Answer:
The explanation is below.
Step-by-step explanation:
Given
C is the midpoint of [tex]\overline{AD}[/tex] and also C is the midpoint of [tex]\overline{EB}[/tex]
[tex]\overline{AC} = \overline{DC}\\ and\\\overline{BC} = \overline{EC}[/tex]
To Prove:
[tex]\angle A \cong \angle D[/tex]
Proof:
[tex]In\ \triangle ACB\ and\ \triangle DCE\\\overline{AC} \cong \overline{DC}\ \textrm{ C is the midpoint of AD}\\\angle ACD \cong \angle DCE\ \textrm{vertically opposite angles}\\\overline{BC} \cong \overline{EC}\ \textrm{ C is the midpoint of BE}\\\therefore \triangle ACB \cong \triangle DCE\ \textrm{ By Side-Angle-Side test}\\\therefore \angle BAC \cong \angle EDC\ \textrm{corresponding parts(angles) of congruent triangles}\\\therefore \angle A \cong \angle D\ \textrm{ Proved}[/tex]
What is the correct way to write 1/4% as a decimal
Answer:
1/0.04 = 25
Step-by-step explanation:
Answer:
Step-by-step explanation:
well 1/4% wouldnt be 25% because they are 25% = 0.25 = 1/4
the percentage sign changes everything
since it is 1/4% rather than 1/4 by itself
1/4% = 0.25%
if you want to know the percent as a decimal you move the "." to the left twice
(or divide by 100)
so that means that the decimal of 0.25% would be 0.0025
Please help!!!!!!!!!!
Divide the total by 1 + interest rate.
12,720 / 1.06 = 12,000
They invested $12,000
Find the fifth term of the pattern 84, 72, 60, ….. I am giving out brainiest if you can help me with the full thing!
Answer:
i believe it would be 36
Answer:36
Step-by-step explanation:
At Keller's bike rentals, it costs $19 to rent a bike for 5hours. How many dollars does it cost per hour of bike use?
Round answer to nearest hundredth
Answer:
$3.80
Step-by-step explanation:
could be wrong though
Answer:
Step-by-step explanation:
19 divided by 5 = 3.8
3.8 to nearest hundreth is 3.80 or you could
Aidan has a collection of 63 dimes and quarters in his piggy bank. If the total value of the coins is $11.25, how many dimes does he have?
Answer:
112 dimes and a nickel.
because, one, 110 dimes equals 11.00 (so add the2 extra dimes.)
two, the .05 is a nickel not a .5 dime.
So that's your answer. 112 dimes and 1 nickel.
Line segment BA has endpoints B(-6, 0) and A(4, 5). What are the coordinates of the point located 3/5 of the way from point A to point B?
The point located 3/5 of the way from point A(4, 5) to point B(-6, 0) on line segment BA is at (0, 3). This is found using the formula for division of a line segment at given ratio.
Explanation:The subject of this question is Geometry, specifically finding the coordinates of a point along a line segment. Line segment BA has coordinates B(-6, 0) and A(4, 5). To find the point located 3/5 of the way from point A to point B, we will need to use the formula for the division of a line segment which is: X = x1 + r(x2 - x1) and Y = y1 + r(y2 – y1), where r is the ratio, in this case 3/5.
Using the formula, the x coordinate of the point can be calculated as: X = (-6) + 3/5 [(4) - (-6)] = -6 + 3/5 * 10 = -6+6 = 0. The y coordinate of the point can be calculated as: Y = 0 + 3/5 [(5) - 0] = 0 + 3 = 3. Therefore, the point is at (0,3) which is located 3/5 of the way from point A to point B on the line segment.
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Final answer:
The coordinates of the point located 3/5 of the way from point A to point B are (0, 3), calculated by finding the weighted average of the x and y coordinates of the endpoints.
Explanation:
To find the coordinates of the point located 3/5 of the way from point A to point B, we need to calculate the weighted average of the endpoints. The coordinates of point B are (-6, 0) and the coordinates of point A are (4, 5).
The x-coordinate of the point is calculated as follows:
(-6) + ((4 - (-6)) × (3/5)) = (-6) + (10 × (3/5)) = (-6) + 6 = 0.
The y-coordinate of the point is calculated as follows:
0 + ((5 - 0) × (3/5)) = 0 + (5 × (3/5)) = 3.
Therefore, the coordinates of the point located 3/5 of the way from point A to point B are (0, 3).
Identify the reciprocal of each number. Type it in the blank, using a slash (/) to show a fraction.
32
Frank deposited $4000 into an account with 3% interest, compounded semiannually. Assuming that no withdrawals are made, how much will he have in the account after 5 years?
[tex]\bf ~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$4000\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{semiannually, thus twice} \end{array}\dotfill &2\\ t=years\dotfill &5 \end{cases} \\\\\\ A=4000\left(1+\frac{0.03}{2}\right)^{2\cdot 5}\implies A=4000(1.015)^{10}\implies A\approx 4642.16[/tex]
Solve for f in terms of t
t=1/f
Answer:The value of f is;
Step-by-step explanation:
f=1/t
One prepaid cell phone company charges $0.029 per minute and a $2 monthly fee. Another company charges $0.033 per minute with no monthly fee. For what number of minutes per month are the charges for the first company cheaper?
Answer:
For more than 500 minutes
Step-by-step explanation:
Let x be the number of minutes.
First company charges:
$0.029 per minute, then $0.029x for x minutes
and a $2 monthly fee.
In total, $(0.029x+2)
Second company charges:
$0.033 per minute, then $0.033x for x minutes
with no monthly fee.
If the charges for the first company are cheaper, then
[tex]0.029x+2<0.033x[/tex]
Multiply this inequality by 1,000:
[tex]29x+2,000<33x\\ \\33x-29x>2,000\\ \\4x>2,000\\ \\x>500[/tex]
At a warehouse,127 delivery trucks were loaded w 48 packages on each truck.Estimatethe total number of packages on the trucks. Write an equation to model work.
Answer:
n= Total number of packages on trucks= 6096
n = T x P (Model Equation)
Step-by-step explanation:
No. Of delivery trucks = T = 127
Package on each truck = P = 48
Total number of packages on trucks =n= ?
Each truck contains 48 packages and total trucks were 127, to find total number of packages on trucks , we just need to multiply the number of trucks with the number of package on each truck.
Total number of packages on trucks =n= (No. Of delivery trucks) x (Package on each truck)
n = T x P (Model Equation)
n= 127 x 48
n= 6096 (Total number of packages on trucks)
Determine the amount of money you need to invest to have $18,000 dollars in 2 years if you Invest it at 20% annual Interest, compounded
continuously.
$28,852.84
$17,294.21
$12,065.76
$133,033.01
To have $18,000 in 2 years with a 20% annual interest rate compounded continuously, you need to invest approximately $12,065.76.
Explanation:To determine the amount of money you need to invest to have $18,000 in 2 years with a 20% annual interest rate compounded continuously, we can use the formula:
A = P * e^(rt)
Where:
A is the future value (in this case $18,000)P is the principal amount we need to finde is the mathematical constant approximately equal to 2.71828r is the interest rate (20% = 0.20)t is the time in years (2 years)Substituting the values into the formula:
18,000 = P * e^(0.20*2)
Simplifying:
18,000 = P * e^(0.40)
P = 18,000 / e^(0.40)
Using a calculator to evaluate the exponential term:
P ≈ 12,065.76
Therefore, you need to invest approximately $12,065.76 to have $18,000 in 2 years.
Which expressions have the same product as 3 x 0.5? Check all that apply.
•0.375 x 0.5
•0.625 x 0.5
•0.5 x 0.5
•4/5 x 1/2
•3/8 x 1/2
None of the given expressions (0.375 x 0.5, 0.625 x 0.5, 0.5 x 0.5, 4/5 x 1/2, 3/8 x 1/2) have the same product as 3 x 0.5, which equals 1.5.
Explanation:To find out which expressions have the same product as 3 x 0.5, we first need to determine the product of 3 x 0.5. This is easy to do: 3 x 0.5 equals 1.5.
Now, let's check the given expressions:
0.375 x 0.5 = 0.1875, 0.625 x 0.5 = 0.3125, 0.5 x 0.5 = 0.25, 4/5 x 1/2 = 0.4, 3/8 x 1/2 = 0.1875.
As we can see, none of these expressions equals 1.5. Thus, none of them have the same product as 3 x 0.5.
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The sides of a rectangle in the coordinate plane are parallel to the axes two of the vertices of the rectangle are (3,-2) and (-4,-7) find coordinates for the other two verticals find the area of the rectangle
Answer:
C(-4,-2), D(3,-7)
[tex]Ar=35unit^{2}[/tex]
Step-by-step explanation:
we procced to identify points:
A(-4,-7), B(3,-2)
for being the sides of a rectangle parallel to the axes, we find the other two vertices (VIEW GRAPH)
C(-4,-2), D(3,-7); Area of the rectangle Ar=b*h, where
[tex]b=(X_{D}-X_{A}); h=(Y_{B}-Y_{D})[/tex]
So Ar=(3-(-4))*(-2-(-7)) = (3+4)*(-2+7)=7*5=[tex]35unit^{2}[/tex]
Final answer:
The other two vertices of the rectangle are (3, -7) and (-4, -2), and the area of the rectangle is 35 square units.
Explanation:
To find the coordinates of the other two vertices of a rectangle given two vertices on the coordinate plane, use the fact that the sides of the rectangle are parallel to the axes.
The two given vertices are (3, -2) and (-4, -7). A rectangle has opposite sides of equal length, so the x-coordinates of the opposite vertices must be the same for one pair, and the y-coordinates must be the same for the other pair. Therefore, the other two vertices will have coordinates (3, -7) and (-4, -2).
To find the area of the rectangle, calculate the difference in the x-coordinates (length) and the difference in the y-coordinates (width), then multiply these together.
The length is |3 - (-4)| = 7 and the width is |-2 - (-7)| = 5,
so the area is 7 × 5 = 35 square units.
What is the standard form of the equation y = (x + 2)^2 -3
y = x^2 + 4x - 3
y = x^2 + 4x + 7
y = x^2 + 4x + 1
y = x^2 + 4x - 3
Answer:
y=x^2+4x+7
Step-by-step explanation:
y=(x+2)(x+2)-3
y=x^2+2x+2x+4-3
y=x^2+4x+7
Answer:
C. y = x² + 4x + 1
Step-by-step explanation:
y = (x + 2)² - 3
y = x² + 4x + 4 - 3
y = x² + 4x + 1
What is the value of x?
Enter your answer in the box.
x =
Answer:
The value of x is 25.
Step-by-step explanation:
Given:
side AB = [tex]3x-5[/tex]
side BC = [tex]2x+20[/tex]
side AC = [tex]4x-30[/tex]
In Δ ABC is an equilateral triangle.
In equilateral triangle all three angles are same and also the sides are same.
Hence side AB = side BC
Substituting the values for side AB and side BC we get,
[tex]3x-5=2x+20\\3x-2x=20+5\\x=25[/tex]
Hence the value of x = 25.
Answer:
The value of x for the given figure is 95 And 1.67
Step-by-step explanation:
From Given figure :
Sin angle = [tex]\dfrac{\textrm perpendicular}{\textrm Hypotenuse}[/tex]
or , Sin C = [tex]\dfrac{\textrm 3x - 5}{\textrm 4 x - 30}[/tex]
Cos angle = [tex]\dfrac{\textrm Base}{\textrm Hypotenuse}[/tex]
or , Cos C = [tex]\dfrac{\textrm 2x + 20}{\textrm 4 x - 30}[/tex]
Or, Cos c = [tex]\sqrt{1 - sin^{2}C }[/tex]
Or, [tex]\dfrac{\textrm 2x + 20}{\textrm 4 x - 30}[/tex] = [tex]\sqrt{1-(\frac{3x - 5}{4 x + 20} })^{2}[/tex]
or, [tex](\frac{2x+20}{4x-30}) ^{2}[/tex] = 1 - [tex](\frac{3x-5}{4x-30} )^{2}[/tex]
[tex]\frac{4x^{2}+400+80x}{16x^{2}+900-240x}[/tex]= 1- ( [tex]\frac{9x^{2}+25-30x}{16x^{2}+900-240x}[/tex] )
Or, 4x²+400+80x = [tex]16x^{2}+900-240x[/tex] - 9x² -25 +30x
or, 4x²+400+80x = 7 x² + 875 -210x
or, 3 x² + 475 -290 x = 0
Or, Solving the equation
3 x² - 285 x - 5 x + 475 = 0
or, 3 x ( x - 95 ) - 5 ( x - 95 ) = 0
or, ( x - 95 ) ( 3 x - 5 ) = 0
∴ x = 95 and x = 1.67
Hence The value of x for the given figure is 95 And 1.67 Answer
2. If 17.17 = 289, then 172 = 289 and V289=
Answer:
v172
Step-by-step explanation:
This might be wrong. Because 172=289 you can substituite 289 for 172.
The sum of two numbers is −102. One number is 62 less than the other. Find the numbers.
To solve for the two numbers that sum to -102, with one number being 62 less than the other, we use algebraic methods to find the numbers as -20 and -82.
Explanation:To find the two numbers that sum to -102 and where one number is 62 less than the other, we can set up the following system of equations based on the given information:
Let x be the first number.Let y be the second number.The sum of the numbers is given by the equation x + y = -102.One number is 62 less than the other, represented as y = x - 62.Substitute y from the second equation into the first equation:
x + (x - 62) = -1022x - 62 = -102Combine like terms: 2x = -40Divide by 2: x = -20Now that we have x, we can find y by substituting x back into the equation y = x - 62:
y = -20 - 62y = -82Therefore, the two numbers are -20 and -82.
use your number sense to find the values for x and y that satisfy the equations2x=8
Answer:
x = 4
Step-by-step explanation:
Using "number sense"
2x=8
Double a number is 8.
What is half of 8? 4.
Double of 4 is 8.
Therefore the number, x, is 4.
Check:
2x = 8
x = 8/2
x = 4
2x = 8
2(4) = 8
8 = 8
If (x – 2k) is a factor of f(x), which of the following must be true? f(2k) = 0 f(-2k) = 0 A root of f(x) is x = -2k. Ay intercept of f(x) is x = 2k.
Answer:
f(2k)=0
Step-by-step explanation:
Let's suppose f(x) is such that (x-2k) is one of its factors. We can write it as
f(x)=(x-2k).g(x)
Where g(x) is any other function of x, and g(x) in non-divisible by (x-2k). If we replace x=2k into f, we get
f(2k)=(0).g(2k)=0
f(2k)=0
Answer:
A
Step-by-step explanation:
took the test
Find the 'x' and 'y' intercepts of the line 3x + 6y = 24 .
x = 8 and y = - 4
x = 8 and y = 4
x = 4 and y = -8
x = -4 and y = 8
Answer:
(8, -4)
Step-by-step explanation:
What is x if -7x - 11 = 25 - 10x
Answer: The answer is x = 12
Step-by-step explanation:
Answer:
x = 12
Step-by-step explanation:
1. Get all x varibles to one side.
-7x - 11 = 25 - 10x
+ 10x +10x
2. Get all constants to one side.
3x - 11 = 25
+ 11 +11
3. Divide on both sides to get x alone.
3x = 36
÷3 ÷3
x = 12
Which of the following best describes the function graphed below?
O Linear increasing
O Nonlinear increasing
O Nonlinear decreasing
O Linear decreasing
Im giving 20 points✨!
What is the power of 10 when 0.00503 is written in scientific notation?
Answer:
The answer would be 5.03x10^-3 ^-^
Step-by-step explanation:
Answer:
-3.
Step-by-step explanation:
Counting the digits after the point until we get to the 5:
The count is 3.
The power is -3:
5.03 * 10^-3.