Answer:
Step-by-step explanation:
3x^2 - 4x^2 - 6mn + 5mn
-x^2 - mn
Before the election, you want to determine the number of possible president/vice-president combinations for the sorority you belong to. if both positions are chosen from nine people, how many combinations are possible
Answer:
The possible number of combination to select two positions from 9 people is 72.
Adsila and Carlos volunteer to fill gift boxes for soldiers serving overseas.
Both work at a constant rate. They work together for 6 hours and fill 126 boxes,
Adsila fills 9 boxes every hour. How many boxes does Carlos fill every hour?
Answer:
12 boxes an hour
Step-by-step explanation:
If Adsila made 9 boxes an hour for 6 hours,she made 54 boxes (9*6=54). Take how many she made away from the total (126-54=72). If Carlos made 72 boxes in 6 hours, divide 72 by 6 to get 12 (72/6=12). Carlos made 12 boxes an hour.
Solve for x: −2(x + 3) = −2x − 6
Answer:
All real numbers
Step-by-step explanation:
Solution set of -2(x +3) = -2x -6 is all x ∈R (real numbers).
What is equation?
" Equation is defined as when two algebraic expression which are related with the sign of equality."
According to the question,
Given,
-2(x + 3) = -2x - 6
Open the brackets of the equation we get,
-2(x) + (-2)(3) = -2x - 6
⇒ -2x - 6 = -2x - 6
Add 6 on both the sides of the equation we get,
-2x = -2x
Divide by -2 of the equation both sides
x = x _____(1)
Add (-x) both the sides we get,
0 = 0 _____(2)
From (1) and (2) we conclude ,
Solution is true for all the real values of x.
Hence, solution set of -2(x +3) = -2x -6 is all x ∈R (real numbers).
Learn more about equation here
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Help i dont understand Pls Help :( Given h(x)=4x-4h(x)=4x−4, solve for xx when h(x)=0h(x)=0.
Answer:
x=1
Step-by-step explanation:
So when it's h(5)= whatever equation you all the x in the equation to 5 and solve. When it says h(x)=0, it's asking you to find x for the equation to equal 0.
It's easy! all you have to do is set the equation to 0
so 4x-4=0
add 4 from both sides
4x = 4
divide
x=1
What is the quotient of 75,120 ÷ 16?
Answer:
4695
Step-by-step explanation:
Answer:
4,695
use long divison
Simplify the expression.
(2x^2y)^3
Answer:
=
4
x
4
y
6
Explanation:
(
2
1
x
2
y
3
)
2
Here
2
needs to be multiplied with each term within the bracket:
=
2
1
.
2
x
2
.
2
.
y
3
.
2
=
2
2
.
x
4
.
y
6
=
4
x
4
y
6=
4
x
4
y
6
Explanation:
(
2
1
x
2
y
3
)
2
Here
2
needs to be multiplied with each term within the bracket:
=
2
1
.
2
x
2
.
2
.
y
3
.
2
=
2
2
.
x
4
.
y
6
=
4
x
4
y
6=
4
x
4
y
6
Explanation:
(
2
1
x
2
y
3
)
2
Here
2
needs to be multiplied with each term within the bracket:
=
2
1
.
2
x
2
.
2
.
y
3
.
2
=
2
2
.
x
4
.
y
6
=
4
x
4
y
6=
4
x
4
y
6
Explanation:
(
2
1
x
2
y
3
)
2
Here
2
needs to be multiplied with each term within the bracket:
=
2
1
.
2
x
2
.
2
.
y
3
.
2
=
2
2
.
x
4
.
y
6
=
4
x
4
y
6=
4
x
4
y
6
Explanation:
(
2
1
x
2
y
3
)
2
Here
2
needs to be multiplied with each term within the bracket:
=
2
1
.
2
x
2
.
2
.
y
3
.
2
=
2
2
.
x
4
.
y
6
=
4
x
4
y
6
Step-by-step explanation:
look at the attachment
Answer:
x=-6
For PA: 78-29=49
For AQ: 48+3=51
Step-by-step explanation:
The line is from left to right PAQ
It says PQ is 100 which is the whole line
PA +AQ is PQ so that means:
-13x-29-8x+3=100
-21x-26=100
-21x=126
x=-6
Plug in the x values to PA and AQ
For PA: 78-29=49
For AQ: 48+3=51
Josiah subtracts 337 from 600 and writes the following
600 minus 300 is 300. Then I can subtract 40 more and get 260. But I should have only subtracted 37
more, so I'll add 3 back to my difference to get 263
Which montal math strategy did Josiah use?
Answer:
Associative property is the math strategy Josiah used
the difference of a number and 6 is the same as 5 times the sum of the number and 2
Answer:
n - 6 = 5 * ( n + 2 ) ; n = -4
Step-by-step explanation:
For this problem, we will use the words to create an equation. The left hand side of the equation will be the difference of a number and 6 and the right hand side of the equation will be 5 times the sum of the number and 2. Hence, we can build the equation:
n - 6 = 5 * ( n + 2 )
If we wanted, we can solve the equation for the number, n.
n - 6 = 5 * ( n + 2 )
n - 6 = 5 * n + 5 * 2
n - 6 = 5n + 10
-16 = 4n
-4 = n
Thus, we have found the missing number to be negative four.
Cheers.
Jeson formed two-digit numbers using the following rules. (i) The digit in the tens place is an EVEN number. (ii) The two-digit number is divisible by 5. How many numbers did Jeson form? a) 5 b) 8 c )16 d) 18
Answer:
b) 8.
Step-by-step explanation:
The tens digit must be 2, 4, 6 or 8.
The units digit must be 0 or 5 ( as the 2 digit number must be divisible by 5).
So they are:
20, 25, 40, 45, 60, 65 , 80 and 85.
Answer:The tens digit must be 2, 4, 6 or 8.
The units digit must be 0 or 5 ( as the 2 digit number must be divisible by 5).
So they are:
20, 25, 40, 45, 60, 65 , 80 and 85.
Step-by-step explanation:
If 3 out of 24 students made an "A" what percent of students
made an "A"?
The sum of the measures of the angles of a triangle is 180. The sum of the measures of the second and third angles is five times the measure of the first angle. The third angle is 16 more than the second. Let x, y, and z represent the measures of the first, second, and third angles, respectively. Find the measures of the three angles.
Step-by-step explanation:
z=y+16
y=y
:.z+y=5x where z=y+16
2y+16=5x
x=(2y+16)/5
.:z+y+x=180
y+16+y+(2y+16)/5=180
12y+80+16=900
y=67
z=16+67=83
x=30
If presented with the following equation, what is the next step in the equation solving sequence? x + 3x = -50 - 23+5
Answer:
Add the similar elements
[tex]x+3x=4x\\-50-23+5=-68\\\\4x=-68[/tex]
Step-by-step explanation: Further steps
Divide both sides by 4
[tex]\frac{4x}{4}=\frac{-68}{4}[/tex]
Simplify
[tex]x=-17[/tex]
Answer:
combine like
Step-by-step explanation:
Values of k for which the quadratic equation 2x - kx + k 0 has equal roots is
a)0only
b)4
c)8 only
d)0,8
Answer:
The answer is D.
Step-by-step explanation:
We have to apply Discriminant Law. When a quadratic equation, ax² + bx + c = 0 has equal roots so the discriminant will be 0. Then, you have to substitute the values into the formula :
[tex]D = {b}^{2} - 4ac[/tex]
[tex]let \: D = 0 ,a = 2,b = k,c = k[/tex]
[tex]0 = {k}^{2} - 4(2)(k)[/tex]
[tex] {k}^{2} - 8k = 0[/tex]
[tex]k(k - 8) = 0[/tex]
[tex]k = 0[/tex]
[tex]k - 8 = 0[/tex]
[tex]k = 8[/tex]
What is the algebraic rule for a translation that moves the points right 4 units and down 3 units?
Answer: (x,y) —> (x+4, y-3)
it could also be T 4, -3 (x,y)
Step-by-step explanation:
If you move something right 4, x+4. Moving something down 3 is y-3.
the general form is always (x,y) —> (x + (whatever)), y + (whatever))
Or T whatever, whatever (x,y)
The first (whatever) is applied to x, second is for y.
hopes this helps
NarStor, a computer disk drive manufacturer, claims that the median time until failure for their hard drives is more than 14,400 hours. You work for a consumer group that has decided to examine this claim. Technicians ran 16 NarStor hard drives continuously for almost three years. Recently the last drive failed. The times to failure (in hours) are given in the following table. Give the test statistic.330 620 1870 2410 4620 6396 7822 81028309 12882 14419 16092 18384 20916 23812 25814
Answer:
The test statistics is [tex]t = -1.727[/tex]
Step-by-step explanation:
From the question we are told that
The data given is
330 620 1870 2410 4620 6396 7822 81028309 12882 14419 16092 18384 20916 23812 25814
The population mean is [tex]\mu = 14400[/tex]
The sample size is n = 16
The null hypothesis is [tex]\mu \le 14400[/tex]
The alternative hypothesis is [tex]H_a : \mu > 14400[/tex]
The sample mean is mathematically evaluated as
[tex]\= x = \frac{\sum x_i}{n}[/tex]
So
[tex]\= x = \frac{330+ 620+ 1870 +2410+ 4620+ 6396+ 7822+ 8102+8309+ 12882+ 14419+ 16092+ 18384 +20916+ 23812+ 25814 }{16}[/tex]
=> [tex]\= x = 10799.9[/tex]
The standard deviation is mathematically represented as
[tex]\sigma =\sqrt{\frac{ \sum (x_i - \=x)^2}{n}} [/tex]
So
[tex]\sigma =\sqrt{\frac{(330- 10799.9)^2 + (620- 10799.9)^2+ (1870- 10799.9)^2 +(2410- 10799.9)^2 + (4620- 10799.9)^2 +(6396- 10799.9)^2 +(7822- 10799.9)^2 }{16}} \ ..[/tex]
[tex]..\sqrt{ \frac{(8102 - 10799.9)^2 +(8309 - 10799.9)^2 + (12882 - 10799.9)^2 + (14419 - 10799.9)^2 + (16092 - 10799.9)^2 + (18384 - 10799.9)^2 +(20916 - 10799.9)^2 }{16}} \ ...[/tex]
[tex]\ ... \sqrt{\frac{(23812 - 10799.9)^2 +(25814 - 10799.9)^2 }{16}}[/tex]
=> [tex]\sigma = 8340[/tex]
Generally the test statistic is mathematically represented as
[tex]t = \frac{10799.9- 14400}{ \frac{8340}{\sqrt{16} } }[/tex]
[tex]t = -1.727[/tex]
From the z-table the p-value is
[tex]p-value = P(Z > t) = P(Z > -1.727) = 0.95792[/tex]
From the values obtained we see that
[tex]p-value > \alpha[/tex] so we fail to reject the null hypothesis
Which implies that the claim of the NarStor is wrong
Alan can do 2/3 part of his work and sam can do 3/4 part of her work .Who can do more work
Answer:
Sam can do more work.
Step-by-step explanation:
2/3 equals out to just over half of his work done. 0.66666667.
3/4 equals out to almost all of her work done. 0.75.
*hope this helps*
Answer:
Sam can do more work:)
Step-by-step explanation:
what is five added to twice a number
2x+5
Step-by-step explanation:
let the number be x
According to the question
2x+5
hope it whould help
what is 9 as a percent of 90
Answer:
8.1
Step-by-step explanation:
the answer the problem is 8.1
Answer:
10%
Step-by-step explanation:
convert fraction (ratio) 9/90 Answer : 10%
PLEASE HELP ME I WILL MARK AS BRAINLIEST
A map has a scale of
5 in. = 10 mi. If you measured the distance between two cities to
be 17 in. on the map, how many miles would it actually be?
If necessary, round your answer to the nearest tenth.
explain all steps in detall. Incluide your final answer.. 9²+3•(9-5)²/4=
Answer: 93
Step-by-step explanation:
To solve this problem, we need to use the order of operations, or PEMDAS.
Parenthesis
Exponent
Multiply
Divide
Add
Subtract
For multiply/divide and add/subtract, you don't necessarily go in that specific order. You go from left to right, depending on what comes first. For example, if division comes before multiply, you would divide first, then multiply. Same goes for add/subtract.
9²+3×(9-5)²/4 [solve parenthesis]
9²+3×(4)²/4 [solve exponent]
81+3×16/4 [solve multiply or divide, whichever comes first]
81+12 [solve add or subtract, whichever comes first]
93
Now, we know that 93 is our final answer.
Find the least common multiple of 20, 4, and 5
Answer:
LCM = 20
Step-by-step explanation:
You need to make everything into 20. Luckily, 4X5 is 20 and vise versa.
You just found 13,406,190 pennies! How many dollars did you actually find? If each penny weighs 4 grams, how much did all that loot weigh in lbs?
Find the function rule
X Y
0 -5
10 15
20 35
y=___
Answer:
y=2x-5
Step-by-step explanation:
y is double x minus 5
What is the image point of
(−5,−3) after a translation right 4 units and down 1 unit?
Answer:
(-1,-4)
Step-by-step explanation:
(-5,-3) if we're moving four units right on the x axis, it would be a bigger number near the center. Think of it as adding -5 and 4, which would get you -1 for x (-1,x)
Now to get y, we would basically do the same thing except if it's going down, it would be a negative. We would add both -1 and -3 together to get -4, hence the answer, (-1,-4)
I suggest drawing a graph and doing it yourself, it'll really help you.
i have 4 questions
1. Suppose point T is between points R and V on a line. If RT = 63 units and RV = 131 units, then what is TV? 131 194 68 80
2.Given point P is between M and N. If MN = 26, MP = x + 4, and PN = 2x + 1, what is the value of x? x = 3 x = 7 x = 12.5 x = 22
3.Given M is the midpoint of HJ, HM = 4x - 12, and MJ = 3x + 9. What is the value of x?
4.If D is the midpoint of CE, DE = 2x + 4, and CE = 6x + 2, then what is CD?
Answer:
1. [tex]TV = 68[/tex]
2. [tex]x = 7[/tex]
3. [tex]x = 21[/tex]
4. [tex]CD = 8[/tex]
Step-by-step explanation:
Solving (1):
Given
[tex]RT = 63[/tex]
[tex]RV = 131[/tex]
Required
Determine TV
To solve TV, we make use of the following formula;
[tex]RV = RT + TV[/tex]
Substitute values for RT and RV
[tex]131 = 63 + TV[/tex]
Make TV the subject of formula
[tex]TV = 131 - 63[/tex]
[tex]TV = 68[/tex]
Solving (2):
Given
[tex]MN = 26[/tex]
[tex]MP = x + 4[/tex]
[tex]PN = 2x + 1[/tex]
Required
FInd x
To solve x, we make use of the following formula;
[tex]MN = MP + PN[/tex]
Substitute values for MP, MN and NP
[tex]26 =x + 4 + 2x + 1[/tex]
Collect Like Terms
[tex]2x + x = 26 - 4 -1[/tex]
[tex]3x = 21[/tex]
Divide both sides by 3
[tex]x = 7[/tex]
Solving (3):
Given
[tex]HM = 4x - 12[/tex]
[tex]MJ = 3x + 9[/tex]
Required
Find x
Since M is the midpoint;
[tex]HM = MJ[/tex]
This gives
[tex]4x - 12 = 3x + 9[/tex]
Collect Like Terms
[tex]4x - 3x = 12 + 9[/tex]
[tex]x = 21[/tex]
Solving (4):
Given
[tex]CE = 6x + 2[/tex]
[tex]DE = 2x + 4[/tex]
Required
FInd CD
Since D is the midpoint;
[tex]CD= DE[/tex]
and
[tex]CE = CD + DE[/tex]
Substitute CD for DE
[tex]CE = DE + DE[/tex]
[tex]CE = 2DE[/tex]
Substitute values for CE and DE
[tex]6x + 2 = 2(2x + 4)[/tex]
Open Bracket
[tex]6x + 2 = 4x + 8[/tex]
Collect Like Terms
[tex]6x - 4x = 8 - 2[/tex]
[tex]2x = 6[/tex]
Divide both sides by 2
[tex]x = 3[/tex]
Recall that;
[tex]CD= DE[/tex]
So;
[tex]CD = 2x + 4[/tex]
Substitute 2 for x
[tex]CD = 2 * 2 + 4[/tex]
[tex]CD = 4 + 4[/tex]
[tex]CD = 8[/tex]
Alan sells electronics, earning a base wage of $320 for one week, and a commission equal to 5% of his sales. he needs to earn at least $600 each week to cover his expenses. set up and solve an inequality to determine what Alans sales can be in order to ensure his expenses are covered.
Answer:
320 +0.05s ≥ 600sales ≥ $5600Step-by-step explanation:
For sales of 's', Alan's earnings will be ...
320 +0.05s
He wants that to be at least 600, so the inequality is ...
320 +0.05s ≥ 600
__
Its solution is found by subtracting 320 and dividing by 0.05.
0.05s ≥ 280
s ≥ 5600
Alan's weekly sales must be at least $5600 for his earnings to cover his expenses.
An image point after 180 rotation is Z'( 3,7) what are the coordinates of the pre-image point
Answer:
(-3 , -7)
Step-by-step explanation:
Each ounce of Food I contains 3 g of carbohydrate and 2 g of protein, and each ounce of Food II contains 5 g of carbohydrate and 3 g of protein. Suppose x ounces of Food I are mixed with y ounces of Food II. The foods are combined to produce a blend that contains exactly 73 g of carbohydrate and 46 g of protein.
a. Explain why there are 3x + 5y g of carbohydrate in the blend and why we must have 3x + 5y = 73. Find a similar equation for protein. Sketch the graphs of both equations.
b. Where do the two graphs in part (a) intersect? Interpret the significance of this point of intersection
Answer:
The answer is below
Step-by-step explanation:
a) Food I contains 3 g of carbohydrate and food II 5 g of carbohydrate. x is the number of ounce of food I while y is the number of ounce of food II.
Therefore, the amount of carbohydrate in food 1 is 3x while that of food II is 5y. Since the blend contains exactly 73 g of carbohydrate, the total number of carbohydrate in both food I and food II is 73 g. Hence:
3x + 5y = 73 (1)
Food I contains 2 g of protein and food II 3 g of carbohydrate. Therefore, the amount of protein in food 1 is 2x while that of food II is 3y. Since the blend contains exactly 46 g of protein, the total number of protein in both food I and food II is 46 g. Hence:
2x + 3y = 46 (2)
Using geogebra to Sketch the graphs of both equations.
b) The point of intersection is gotten from the graph, this gives x = 11, y = 8.
The point of intersection shows the amount of food I and food II that give the required amount of protein and carbohydrate.
11 ounce of food I and 8 ounce of food II would produce the required amount of protein and carbohydrate
. Jessica went to the grocery store and purchased a box of cereal for $3.75, milk for $1.50, and bread for $2.25. She paid with a $20.00 bill. How much change did Jessica receive?