Rachel is solving the system of equations below by using the elimination method. Which of the following steps could she use? 7x-21y=14. 2x+3y=11
Answer:
[tex]7x - 21y = 14 - - - (a) \\ 2x + 3y = 11 - - - (b) \\ (a) + 7 \times (b) : \\ 21x + 0y = 91 \\ x = 4.33 \\ (2 \times 4.33) + 3y = 11 \\ 3y = 2.34 \\ y = 0.78 \\ { \boxed{x = 4.33}} \\ { \boxed{y = 0.78}}[/tex]
A planet rotates through one complete revolution every 26 hours. Since the axis of rotation is perpendicular to the equator, you can think of a person standing on the equator as standing on the edge of a disc that is rotating through one complete revolution every 26 hours. Find the angular velocity of a person standing on the equator.
Answer:
23.5 degree stands tap of the floor
Eight less than the product of three and a number is twenty two
Answer:
let x represent the missing number
3x-8=22
3x=22+8
3x=30
3x/3=30/3
x=10
Step-by-step explanation:
hope this is helpful
Answer:
3x - 8 = 22
Step-by-step explanation:
always use x as "the number"
remember product means multiply!
8 less than the product of three and a number
3x - 8
lastly, "is 22"
"is" means equals
3x - 8 = 22
I hope this helps!!
what is the slope of a line between (-4,14) and (-16,8)
Answer:
[tex] \frac{1}{2} [/tex]
Step-by-step explanation:
slope :
[tex]slope \: = \: \frac{y2 - y1}{x2 - x1} = \frac{8 - 14}{ - 16 - - 4} = \frac{ - 6}{ - 12} = \frac{1}{2} [/tex] = 0.5
(08.02 MC)
A pair of equations is shown below:
y = 2x − 1
y = 4x − 5
Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations. (6 points)
Part B: What is the solution to the pair of equations? (4 points)
Answer:
Complete y = Mx + b
Step-by-step explanation:
write the equation in slope intercept form for the line that passes through the point (1,2) and has a slope of -5
Answer:
y = -5 × 1 + 2
Step-by-step explanation:
y = y, m = slope, x = x point given (1), b = y point given, unless a zero (2)Formula - y = mx + bPlug it iny = -5 × 1 + 2
I’m confused:/ can somebody help me??
Answer:
I got ya :D
the answer is
[tex] \binom{ - 18 \: \: \: 10 }{5 \: \: \: - 3} [/tex]
explanation in the attachment
A sum of J$300 is divided in the ratio 2 : 3. Calculate the amount of the LARGER share.
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Answer:
J$180
Step-by-step explanation:
The ratio of the larger share to the total is ...
3 : (2 +3) = 3 : 5
Then the larger share is ...
(3/5)(J$300) = J$180
Calculate the remaining values:c d =
Step-by-step explanation:
of what ? there is nothing here to work with.
Answer: C = 12 D = 8
Step-by-step explanation:
At the school carnival, students can buy tickets in packs of 10. Each pack
of 10 tickets can be used for food or games. Use the coordinate grid below to
determine how many packs of tickets a student can purchase for $27.00.
Answer:
6 packs
Step-by-step explanation:
The answer is 6 packs of tickets. The reasoning behind this is that the graph literally states it. If you go to the side of the graph that shows how much money they spend, and look at 27 you can see that they bought 6 packs of tickets for 27 dollars. If you wanna know how to solve it like mathematically you really wouldn't need to but you can see that if you were to buy 2 packs of tickets it would be 9 dollars (according to the graph) which if we divide 9 by 2 you figure out that for one pack of tickets its $4.50. Then you could easily just divide 27 by 4.5 and you would be left with 6, the answer. Again though u really don't need to do that the graph shows it for you so these questions should be pretty easy. Hope this helped! (also sorry I'm not the best at explaining things but I tried, Goodluck!!) :)
61,229 rounding this
Can someone help me? Step by step, no links. Will give brainliest to the right answer
Answer:
I'm pretty sure it's 3/5
A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet had a mean of 23.2 pounds and a standard deviation of 6.6 pounds. Step 2 of 2 : If a sampling distribution is created using samples of the amounts of weight lost by 65 people on this diet, what would be the standard deviation of the sampling distribution of sample means
Answer:
The standard deviation of the sampling distribution of sample means would be 0.8186.
Step-by-step explanation:
We are given that
Mean of population=23.2 pounds
Standard deviation of population=6.6 pounds
n=65
We have to find the standard deviation of the sampling distribution of sample means.
We know that standard deviation of the sampling distribution of sample means
=[tex]\frac{\sigma}{\sqrt{n}}[/tex]
Using the formula
The standard deviation of the sampling distribution of sample means
=[tex]\frac{6.6}{\sqrt{65}}[/tex]
[tex]=0.8186[/tex]
Hence, the standard deviation of the sampling distribution of sample means would be 0.8186.
BRAINLIST BRAINLIST WHO WANTS BRAINLIST ANSWER AN HERE IS YOU FRESH BRAINLIST
Answer b
Step-by-step explanation: :)
Answer:
A. the maximum value would increase
C. the median would stay the same
What is the value of the expression shown? 7 x [(7 + 7) ÷ 7]
Answer:
14
Step-by-step explanation:
Follow BPEMDAS, or PBEMDAS in this case:
PBEMDAS stands for:
Parenthesis
Brackets
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
~
First, solve the parenthesis:
(7 + 7) = 14
Next, divide:
[14/7] = 2
Finally, multiply:
7 x 2 = 14
14 is your answer.
~
Someone please help on with these problems
Find X. Round your answer to the nearest TENTH of a degree. (GIVING BRAINLEST)
Answer:
36.8 i think
Step-by-step explanation:
Before it can be used, an 18-ounce container of liquid fertilizer must be mixed with 36 ounces of water. What fraction of fertilizer is in the final mixture? (type a simplified fraction)
Answer:
1/3
Step-by-step explanation:
18 oz fertilizer to 36 oz water will make 18+36 = 54 oz of liquid
18/54 , simplify by 2
9/27, simplify by 9
1/3
If the total area of a dartboard is 804 in2 and the area of the bull's-eye is 50in2, what is the probability that a dart that randomly hits the dartboard will hit the bull's-eye?
Answer:
6.2%, option A.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question:
The desired area to hit is of 50 in², while the total area is of 804 in². Thus, the probability of hitting the bull's-eye is:
[tex]p = \frac{50}{804} = 0.062[/tex]
0.062*100% = 6.2%.
6.2%, option A.
Suppose a triangle has sides 1,
and 1. Which of the following must be true?
A. The triangle in question is a right triangle.
B. The triangle in question may or may not be a right triangle.
C. The triangle in question S not a right triangle.
SUBMIT
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Answer:
B. The triangle in question may or may not be a right triangle
Step-by-step explanation:
The length of the third side of the triangle may have any measure between 0 and 2. The triangle will only be a right triangle if the third side has length √2.
The triangle may or may not be a right triangle.
Line m is intersected by line t, as shown in the diagram below.
Based on the diagram, which of the following equations must be true?
a mz1+ m22 = 180°
b. m21+ m23 = 180°
C. m2 2 + m23 = 90°
d. m2 2 + m 24 = 90°
Answer:
Step-by-step explanation:
Only (a) sum of angles 1 and 2 = 180° is true.
Answer:
a is the best answer
Step-by-step explanation:
mz1+m22=180°
A.3 1/4
B.1 3/4
C.2 1/4
D.3/3
Answer:
A. 3 [tex]\frac{1}{4}[/tex]
Step-by-step explanation:
Which equation best represents the relationship between x and y in the graph?
I’ll give brainliest
Describe how the graph of y= x2 can be transformed to the graph of the given equation. (2 points) y = (x-4)2-8
Answer:
The description is that the function was translated 4 units to the right and 8 units down.
Step-by-step explanation:
Translations:
Translating a function f(x) a units to the right is the same as finding f(x - a).
Translating a function f(x) a units to the left is the same as finding f(x + a).
Translating a function f(x) a units up is the same as finding f(x) + a.
Translating a function f(x) a units down is the same as finding f(x) - a.
y= x² to y = (x-4)²-8
First at the domain, x becomes x - 4, so f(x) becomes f(x - 4), that is, the function was translated 4 units to the right.
Then the function is subtracted by 8, that is, it was translated 8 units down.
The description is that the function was translated 4 units to the right and 8 units down.
Elegir
De acuerdo a las propiedades básicas de los triángulos ¿Cuánto suman los punto
ángulos internos de un triángulo?
180°
X
360°
Answer:
180°
Step-by-step explanation:
Una de las propiedades básicas de los triángulos, nos dice que para todo triángulo, la suma de los 3 ángulos internos es siempre igual a 180°.
Esto lo podemos comprobar si trazamos una regla paralela a uno de los lados que pase por el vértice opuesto a ese lado.
Podemos ver que el ángulo generado por una línea recta (un ángulo llano, es decir de 180°) es formado por el ángulo correspondiente al vértice que corta la línea y a dos ángulos de igual medida que los otros ángulos internos del triángulo.
Esto se puede observar en el dibujo de abajo (aunque el dibujo no sea muy prolijo, es suficiente para entender la idea).
How can you compare properties of two functions each represented in a different way?
Step-by-step explanation:
there are three ways to compare functions that is Madhavi Kali numerically and graphically latest compared to function numerical letters considered an example of y equals to 3 X + 5 in this example why is a dependent of ex so in other words if we keep on sending the value of x then why will increase as well
What transformation is shown below??
Answer:
translation
Step-by-step explanation:
a translation. a translation is where the figure is moved, but not rotated or reflected.
Use a linear approximation (or differentials) to estimate the given number. (Round your answer to two decimal places.) (32.03)4/5
Answer:
16.024
Explanation:
Using linear approximation:
We breakdown the numbers in order to solve thus:
[32(1 + 0.1875)]^0.8
= (32^0.8)*(1 + 0.001875)^0.8
= 16* (1 + 0.8*0.001875)
= 16*(1.0015)
= 16.024
The estimated value of the given number is 16.02
What is linear approximation?A linear approximation is an approximation of a general function using a linear function. They are widely used in the method of finite differences to produce first order methods for solving or approximating solutions to equations.
[tex]f(x) = x^{4/5}[/tex] at [tex]x_o = 32\\[/tex] [tex]\Delta\ x = 0.05[/tex]
[tex]f(x) = 32^{4/5} = 16[/tex]
[tex]f'(x) = (4/5)x^{-1/5}\\\\f'(32) = (4/5)32^{-1/5}\\\\= 0.4[/tex]
[tex]L(x) = 0.4(x-32)+16 = x^{4/5}\\\\L(32.05) = 0.4(32.05-32)+16\\\\= 16.02 \\\\= (32.05)^{4/5}[/tex]
Hence, the estimated value of the given number is 16.02
learn more about linear approximation click;
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A TV repair service company has a seasonal demand for its service,and there is a general shortage of skilled TV repair persons.Which one of the following is a capacity production planning alternative suitable for this situation?
A) Hire and lay off workers to match the demand requirements.
B) Increase the backlog for short-term demand surges.
C) Offer reduced prices during the slack season.
D) Build anticipation inventories.
Answer: increase the backlog for short term demand surges
Step-by-step explanation:
Since the TV repair service company has a seasonal demand for its service,and there is a general shortage of skilled TV repair persons, the capacity production planning alternative that's suitable for this situation will be to increase the backlog for short-term demand surges.
Offering reduced prices during the slack season isn't appropriate as this will lead to a reduction in revenue. Building anticipation inventories is also wrong as there may be differences in the forecast made.
The correct option is B.
(15) Find the value of x. *
Answer:
Step-by-step explanation:
x+35=2x(opposite angles of a parallelogram are equal)
35=2x-x
35=x
