Answer:
A is
Step-by-step explanation:
The expression equivalent to 9x² - 4 is (3x-2)(3x+2). Option A is correct.
An equivalent expression to be determine.
Polynomial equation are relationships which independent variables and dependent variables.
Here,
=9x²-4
= (3x)²-2²
= (3x-2)(3x+2)
Thus, The expression equivalent to 9x² - 4 is (3x-2)(3x+2).
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chen bikes 2 1/2 miles in 5/12 hour. What is chens unit rate in miles per hour
Answer:
6 miles per hour
Step-by-step explanation:
I divided 2 1/2 miles by 5/12 hour and got 6 miles per hour
A table is 105 cm high. Its height is 1.2 times its length. What is the length of the table?
Answer:
The Answer is 126.Step-by-step explanation:
method is to multiply 105×1.2. then your answer with come. MARK THIS ANSWER AS BRAINLIEST ANSWER. For more helping hands ☺️THANK YOU ☺️
Farmer Brown’s silo is a circular cylinder with base diameter 12 feet and height 27 feet. What is
the capacity of this silo? If he can get $5.00 a bushel for corn and his silo is full of it, what is his
revenue if one bushel of corn is about 2 cubic feet.
Answer:
3054.02ft³
$7635.1
Step-by-step explanation:
Given parameters:
Base diameter = 12ft
Height = 27ft
Unknown:
Capacity of the silo = ?
Solution:
The capacity of the silo is the same as the volume of the silo. Since we are dealing with a cylindrical body,
Volume of the silo = π r² h
where r is the radius of the silo
h is the height
From the given diameter, we can determine the radius of the silo;
radius = [tex]\frac{12}{2}[/tex] = 6ft
Input the parameters to find the volume of the silo;
Volume = 3.142 x 6² x 27 = 3054.02ft³
B.
If 1 bushel of corn costs $5;
And 1 bushel = 2ft³
The number of bushel in the derived volume;
2ft³ = 1 bushel
3054.02ft³ = [tex]\frac{3054.02}{2}[/tex] = 1527.01bushels
So;
1 bushel = $5
1527.01bushels = 5 x 1527.01 = $7635.1
Tom is drying to write 3/61 as a decimal . He used long division and divided until
he got the quotient 0.0491803279, at which point he stopped. Since the
Decimal doesn’t seem to terminate or repeat , he concluded that 3/61 is not rational.
Do you agree or disagree! ! Select answer
Complete the explanation for your choice
The definition of a rational number is a number that can or cannot
be written as a ratio of two integers with a
denominator Select) equal or not equal
to zero, which
Select) describes or does not describe 3/61
Tom would need to keep dividing to find a
repeating pattern or have the decimal terminate
Answer:
You disagree with Tom saying that the number is rational.
Step-by-step explanation:
A rational number is any number that can be represented as a fraction. An irrational number is just the opposite.
Knowing this, Tom literally converted a fraction into a decimal which means the number is rational.
Now, your question format is hard for me to understand so use my explanation that best fits your answer choices.
Max paid $45 for 9 model planes, Lucy spent $60 for 12 model planes. If each model was the same price, what is the unit price?
A goodness of fit test will be conducted for the following hypotheses. This type of test is always an upper tail test. The p-value approach will be used, meaning that the given level of significance, α = 0.01, will be compared to the area under the curve to the right of the calculated test statistic.
H0 : pA = 0.40, pB = 0.40, and pC = 0.20
Ha : The population proportions are not pA = 0.40, pB = 0.40, and pC = 0.20.
The goal of the hypothesis test is to determine if the observed proportions are significantly different from the given proportions. A sample size of 200 yielded 20 in category A, 100 in category B, and 80 in category C. Assuming the hypothesized proportions are true, then the expected frequencies in each category will be the product of the hypothesized proportions and the sample size.
expected frequency = category proportion(sample size)
The proportion for category A is assumed to be 0.40. Use the sample size of 200 to find the expected frequency for this category, eA.
expected frequency = category proportion(sample size)
eA = ( _____ ) (200)
The proportion for category B is assumed to be 0.40. Use the sample size of 200 to find the expected frequency for this category, eB
expected frequency = category proportion(sample size)
eB = ( ______ ) (200)
The proportion for category C is assumed to be 0.20. Use the sample size of 200 to find the expected frequency for this category, ec expected frequency = category proportion(sample size)
eC = ( ______ )(200)
Answer:
1. 80
2. 80
3. 40
Step-by-step explanation:
The question requires us to Use the sample size of 200 to find the expected frequency for categories A, B and C
1. (Category proportion)(sample size)
eA = 0.40x200
= 80
2. (Category proportion)(sample size)
eB = 0.40x200
= 80
3. (Category proportion)(sample size)
eC = 0.20 x 200
= 40
The answers are 80, 80 and 40 respectively.
Please help me solve this.
Answer:
-1
Step-by-step explanation:
look at the photo above
y=3x+4. Find an equation of a line that is:
parallel to the given line
y=3x+4. Find an equation of a line that is:
perpendicular to the given line
PLZ ANSWER FAST 50 POINTS
Answer:
Parallel: y = 3x + b, where b ≠ 4
Perpendicular: y = -1/3x + b
Step-by-step explanation:
Parallel Lines have the same slope but different y-intercepts.
Perpendicular Lines have a negative reciprocal in slope.
Please help!! I’m in algebra 1 and I’m confuseddddd bruh help me please
Answer:
n = 4
Step-by-step explanation:
[tex]\sqrt[n]{256} = 8^{1/3} * 8^{1/3}[/tex]
[tex]\sqrt[n]{256} = 8^{2/3}[/tex]
[tex]\sqrt[n]{2^8} = 8^{2/3}[/tex]
[tex]2^{8/n} = 2^{3 * (2/3)}[/tex]
[tex]2^{8/n} = 2^{2}[/tex]
[tex]8/n = 2[/tex]
[tex]2n = 8[/tex]
[tex]n = 4[/tex] < --- This is your answer
Hope this helps!
Find the area. Simply your answer.
Answer:
27x
Step-by-step explanation:
A backyard is 40.5 feet long and 25 feet wide. In order to install a pool, the yard needs to be reduced by a scale of One-third. What is the area of the reduced yard?
feet2
Answer:
112.5
Step-by-step explanation:I got it right on the assignment no joke. I don't answer questions for the points but to help people out there who have no clue on what to do.
igualacion.
x-y=3. 2x-3y=4
Answer:
x - y = 3
2x - 3y = 4
Igualación
Despejamos una de las incógnitas en cada ecuación e igualamos. (En este caso la x)
3y + 4
x = y + 3 x = ---------------
2
3y + 4
y + 3 = ---------------
2
2 (y + 3 ) = 3y + 4
2y + 6 = 3y + 4
se pasan las incógnitas a un lado y lo que cambia de lado se cambia de signo
3y - 2y = 6 - 4 ⇒ y = 2
sustituimos el valor de y en cualquiera de las dos para obtener el valor de x
x - 2 = 3 ⇒ x = 5
Solución
x = 5
y =2
HELP I AM SO STUCK AND NEED HEEELP!!
p.s. look at the points
Answer:
25 liters
Step-by-step explanation:
0.5 * 50
= 25
That is the answer
Answer:
Step-by-step explanation:
50 teaspoons = 0.246446 liters
0.246446 rounded to the nearest hundredth is 0.25
so your answer is 0.25
1 teaspoon to liters = 0.005 liters
10 teaspoon to liters = 0.05 liters
50 teaspoon to liters = 0.25 liters
100 teaspoon to liters = 0.5 liters
200 teaspoon to liters = 1 liters
500 teaspoon to liters = 2.5 liters
1000 teaspoon to liters = 5 liters
Eric sheena and heal are playing a game Eric has half as many points as sheena sheena has theee fewer points than Yael together the three players have 68 points how many points does yael have
Answer
68
Step-by-step explanation:
I think
is this true: Dilations always increase the length of line segments?
Step-by-step explanation:
Dilations do not always increase the length of line segments.
A kite flying in the air has a 12-feet line attached to it. Its line is pulled taut and casts a 9-feet shadow. Find the height of the kite. If necessary, round your answer to the nearest tenth.
Answer:
7.93 feet
Step-by-step explanation:
Using the Pythagoras Theorem in the given triangle:
(12)² = (9)² + (x)²
144 = 81 + x²
x² = 144 - 81
x² = 63
x = 7.93 feet
Markel had 112 iPhones. He sold them for $43 each. How much money did he make
Answer:
$4,816
Step-by-step explanation:
Answer:
4816$
Step-by-step explanation:
because 112 times 43$ is 4816
Is the line through points P(3, -5) and Q(1, 4) parallel to the line through points R(-1, 1) and S(3, -3)? Explain.
Given parameters:
Coordinate of line 1 = P(3, -5) and Q(1, 4)
Coordinate of line 2 = R(-1, 1) and S(3, -3)
To know if the two lines are parallel, it must hold that both lines must have the same amount of slope.
Parallel lines are lines that do no intersect at any point.
So we must find the slope of the both lines given.
The formula of the slope of line is:
Slope = [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]
For line 1, P(3, -5) and Q(1, 4) and line 2 R(-1, 1) and S(3, -3)
x₁ = 3, y₁ = -5
x₂ = 1, y₂ = 4
So;
Slope of line 1 = [tex]\frac{4-(-5)}{1-3}[/tex] = [tex]\frac{-9}{2}[/tex]
For line 2 R(-1, 1) and S(3, -3)
x₁ = -1, y₁ = 1
x₂ = 3, y₂ = -3
Slope of line 2 = [tex]\frac{-3-1}{3-(-1)}[/tex] = [tex]\frac{-4}{4}[/tex] = -1
Since both slopes are different, they are not parallel lines. Parallel lines have the same slope.
(whoever answers first gets a brainlist)
If Jay runs for 20 minutes and burns 112 calories. How many calories will he burn if he ran for 45 minutes? Pls help me Imao im dying inside ;_;
Jay burns 252 calories in 45 minutes
Step-by-step explanation:
This is proportions so put 20/45 represents minutes and 112/x represents calories. Jay runs 20 minutes and burns 112 calories. so if Jay runs for 45 minutes so he burns 252. so x=252
20/45 112/x multiply 45 and 112 and then divide 20 and you get an answer of 252. To double check if you got the right answer you multiply 20 and 252 and you get the same answer as 45 x 112
I know this because I am learning about proportions so it is simple to me to answer.
Plzzzzzzz help right answer gets brainly
Answer: 24
Step-by-step explanation:
Subtract them. Then, 23.54 would be closest to 24.
Answer:
21.51.....approximately 22
ellie must mix 6 tablespoons of plant food for every 2 gallons of water. If she has 6 gallons of water, how muck plant food should be used?
Answer:
Step-by-step explanation:
she need 18 tablespoons of plant food for 6 gallons of water:)
3 (x+4) -4 =2 (x+4) +x
What is the answer?
Solution of zero
No solution
Many solutions
X=1
Answer:
Infinite amount of solutions
Step-by-step explanation:
Step 1: Write equation
3(x + 4) - 4 = 2(x + 4) + x
Step 2: Solve for x
Distribute: 3x + 12 - 4 = 2x + 8 + xCombine like terms: 3x + 8 = 3x + 8Subtract 8 on both sides: 3x = 3xDivide both sides by 3: x = xHere we can see that x would be infinite amount of solutions. We can plug in any number x and it would render the equation true.
Chris won at most 300 tickets at an arcade game. He spent 128 tickets on a ball and the rest on gum. Each piece of gum was 25 tickets. Which inequality can be used to determine the greatest number of pieces of gum Chris could have purchased?
Answer:
The answer is about 7 pieces of gum
Step-by-step explanation:
because yes
Answer:
89
Step-by-step explanation
okay do it ypurself
150 seconds is >, <, or = 3 minutes
Answer:
150 seconds< 3 minutes
Step-by-step explanation:
a minute is 60 seconds; 60×3 =180
180 seconds is greater than 150 seconds
Answer:
1 min = 60 seconds
3 min = 60*3 = 180 seconds
Therefore, 150 seconds < 3 minutes
How many different two-letter passwords can be formed from the letters A, B, C, D, E, and F if no repetition of letters is allowed?
___two-letter words can be formed.
The number of different two-letter passwords tha can be formed from the letters A, B, C, D, E, and F if no repetition of letters is allowed is 840.
What is permutation?It should be noted that permutation simply means an arrangement of the objects in a particular order.
This is illustrated as:
= n! / (n - r)!
where n = total object
r = number of objects selected
The number of two letters will be:
= 7! / (7 - 4)!
= 7! / 3!
= 7 × 6 × 5 × 4
= 840
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if 100 + x +2y = 200
and x is 20 then what is y
Answer:
40
Step-by-step explanation:
Step 1:
100 + x + 2y = 200 Equation
Step 2:
100 + 20 + 2y = 200 Substitute x
Step 3:
120 + 2y = 200 Add
Step 4:
2y = 80 Subtract 120 on both sides
Answer:
y = 40 Divide
Hope This Helps :)
six less than three - fifths of x
Translate the expression
Step-by-step explanation:
♥️♥️♥️ i hope i have been useful buddy
Amanda jogged 7.75 laps around a track. Each lap is 1/4 mile. How many laps did Amanda jog ?
Answer:
31 laps
Step-by-step explanation:
Take the total distance and divide by the distance each lap is
7.75 ÷ .25
31
Amanda jogged 31 laps
Determine the slope and the y intercept .6y+x=6 please help
Answer: the slope is negative [tex]\frac{1}{6}[/tex] and the y intercept is (0,1)
Step-by-step explanation:
Please Solve, Brainliest Foer 40 points
(2z−3) /5 − (z−6)/4 =3
Answer:
z = 14
Step-by-step explanation:
Step 1: Write equation
(2z - 3)/5 - (z - 6)/4 = 3
Step 2: Solve for z
Multiply both sides by 20: 4(2z - 3) - 5(z - 6) = 60Distribute: 8z - 12 - 5z + 30 = 60Combine like terms: 3z + 18 = 60Subtract 18 on both sides: 3z = 42Divide both sides by 3: z = 14Step 3: Check
Plug in z to verify it's a solution.
(2(14) - 3)/5 - (14 - 6)/4 = 3
(28 - 3)/5 - 8/4 = 3
25/5 - 2 = 3
5 - 2 = 3
3 = 3
Hi there!
Answer:
[tex]\boxed{z = 14}[/tex]
Step-by-step explanation:
[tex](2z - 3) \div 5 - (z - 6) \div 4 = 3[/tex]
Ok this should be easy, lol!
⇒First you going to simplify both sides of the equation.
[tex]\frac{2z - 3 }{5} - (\frac{z - 6}{4}) = 3[/tex]
[tex]\frac{2}{5}z + \frac{-3}{5} + \frac{-1}{4}z + \frac{3}{2} = 3[/tex] ⇒Then Distribute.
- ⇅⇅ -
⇒Now combine like terms.
[tex]( \frac{2}{5}z + \frac{-1}{4}z) + (\frac{-3}{5} + \frac{3}{2}) = 3[/tex]
[tex]\frac{3}{20}z + \frac{9}{10} = 3[/tex]
⇒Second you're gonna subtract 9/10 from both sides.
[tex]\frac{3}{20}z + \frac{9}{10} - \frac{9}{10} = 3 - \frac{9}{10}[/tex]
[tex]\frac{3}{20}z = \frac{21}{10}[/tex]
⇒Now, for the last step, multiply both sides by 20/3.
[tex](\frac{20}{3}) * (\frac{3}{20}z) = (\frac{20}{3} ) * (\frac{21}{10})[/tex]
Now you understand why z = 14!
Have a good day/night!
