Answer:
c and e
Step-by-step explanation:
Option B is correct, 2×(5+6)=2×5 + 2×6 is the equation which use the distributive property correctly to multiply rational numbers
What is Number system?A number system is defined as a system of writing to express numbers.
The distributive property in multiplication states that when a number is multiplied by the sum or difference of two numbers, then the first number can be distributed to both of those numbers with the relevant sign.
a×(b+c)=a×b + a×c
This is the distributive property for multiply rational numbers
2×(5+6)=2×5 + 2×6
Hence, option B is correct, 2×(5+6)=2×5 + 2×6 is the equation which use the distributive property correctly to multiply rational numbers
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HELP ASAP
Classic Cars paid €9000 for a vintage Ferrari and sold for €11,250. What percentage profit did they make?
Answer:770000
Step-by-step explanation:
That how much they made
Answer:
€8988.75
Step-by-step My bad that's not the answer
2. The weight of 8 boxes of biscuits is 128 kg. Find the weight of 19 boxes.
Answer:
1216 kg
Step-by-step explanation:
19/8 = 9.5
128 x 9.5 = 1216
what is the answer of -2 < 5 - k ÷ 2
Step-by-step explanation:
[tex] - 2 < 5 - \frac{k}{2} \\ - 7 < - \frac{k}{2} \\ \frac{k}{2} > 7 \\ k > 14[/tex]
(b) Factorise 3n + 12
Answer:
3(n+4)
Step-by-step explanation:
you will take common
3(n+4)
3n + 12 can be factorized to get 3(n+4).
What is factorization?Factorization is the process of writing a number as the product of other numbers known as factors.
A number can be factorized by many methods. In this case, we can factorize the given expression by taking out the common factors as follows:3n+12 = 3(n+4)
This is the factorized form of the expression 3n+12.We have factorized the given expression as 3(n+4).
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For each Image find the missing measurement.round to the nearest 10th if necessary.
Answer:
x = 13.748 feet
Step-by-step explanation:
could not see what the answer should be rounded to
this is a right triangle so you can use the Pythagorean Theorem:
6² + x² = 15²
x = [tex]\sqrt{225-36}[/tex] = [tex]\sqrt{189}[/tex] ≈ 13.748
Find the length of AD if the length of AB is 14 units, the length of BC is 5 units, and the length of CD is 8 units.
Answer:
Im assuming your needing to divide
Step-by-step explanation:
If we do the math then A is 7 and D is 4 making 11 units
Answer:
16.9
Step-by-step explanation:
H=-16t^2+122t+5 where h is height in feet and t is time in seconds. How long will it take the baseball to hit the ground? h=-16t^2+162t+0.2 where h is height in feet and t is time in seconds. How long will it take the golf ball to hit the ground?
Answer:
[tex]t= 7.67[/tex]
[tex]t= 10.13s[/tex]
Step-by-step explanation:
Solving (a):
[tex]H=-16t^2+122t+5[/tex]
Required: Time to hit the ground
This means that H = 0
So, we have:
[tex]0=-16t^2+122t+5[/tex]
Rewrite as:
[tex]16t^2-122t-5=0[/tex]
Solve for t using:
[tex]t= \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]
[tex]t= \frac{122 \± \sqrt{(-122)^2 - 4*16*-5}}{2*16}[/tex]
[tex]t= \frac{122 \± \sqrt{15204}}{2*16}[/tex]
[tex]t= \frac{122 \± 123.3}{32}[/tex]
Split:
[tex]t= \frac{122 + 123.3}{32}[/tex] or [tex]t= \frac{122 - 123.3}{32}[/tex]
[tex]t= \frac{245.3}{32}[/tex] or [tex]t= \frac{-1.3}{32}[/tex]
[tex]t= 7.67[/tex] or [tex]t= -0.0406[/tex]
Time can not be negative. so: [tex]t= 7.67[/tex]
Solving (b):
[tex]h=-16t^2+162t+0.2[/tex]
Required: Time to hit the ground
This means that h = 0
[tex]0=-16t^2+162t+0.2[/tex]
Rewrite as:
[tex]16t^2-162t-0.2= 0[/tex]
Solve for t using:
[tex]t= \frac{-b \± \sqrt{b^2 - 4ac}}{2a}[/tex]
[tex]t= \frac{162 \± \sqrt{(-162)^2 - 4*16*-0.2}}{2*16}[/tex]
[tex]t= \frac{162 \± \sqrt{26256.8}}{32}[/tex]
[tex]t= \frac{162 \± 162.04}{32}[/tex]
[tex]t= \frac{162 + 162.04}{32}[/tex] or [tex]t= \frac{162 - 162.04}{32}[/tex]
[tex]t= \frac{324.04}{32}[/tex] or [tex]t= \frac{-0.04}{32}[/tex]
Time can not be negative. So:
[tex]t= \frac{324.04}{32}[/tex]
[tex]t= 10.13s[/tex]
Please help me with this
are the ratios 4:1 and 20:5 equivalent? and if they are how are they equivalent and if they aren't why aren't they equivalent??!!
Answer:
They are equivalent.
Step-by-step explanation:
If EFGH is an isosceles trapezoid , EH = 4x-27, FG = x + 9 , EG = 3y + 19 and FH=11y-21, solve for x and y.
Answer: X = 12, Y = 5
Step-by-step explanation:
4x-27 = x+9
+27 +27
4x = x + 36
-x -x
3x = 36
3x/3 = 36/3
X = 12
3y + 19 = 11y - 21
+21 +21
3y + 40 = 11y
-3y -3y
40 = 8y
40/8 = 8y/8
Y = 5
The values of x and y are 12 and 5, respectively
The given parameters are:
EH = 4x-27FG = x + 9EG = 3y + 19FH= 11y - 21The slant sides of an isosceles trapezoid are equal.
So, we have:
[tex]EH =FG[/tex]
This gives
[tex]4x - 27 = x + 9[/tex]
Collect like terms
[tex]4x - x = 27 + 9[/tex]
[tex]3x = 36[/tex]
Divide through by 3
[tex]x = 12[/tex]
Also, the diagonals of an isosceles trapezoid are equal.
So, we have:
[tex]EG = FH[/tex]
This gives
[tex]3y + 19 = 11y - 21[/tex]
Collect like terms
[tex]11y - 3y =19 + 21[/tex]
[tex]8y = 40[/tex]
Divide through by 8
[tex]y = 5[/tex]
Hence, the values of x and y are 12 and 5, respectively
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9.7 x 0.006 divided by
0.825
Answer:
0.06831
.....................
Answer:
_________
0.0705454
Step-by-step explanation:
3/4 of a cup of punch mix makes 2 gallons of punch how much gallons can be made from 1 1/2 cups of mix
HELP SOMEBODY!! WILL MARK BRAINLIEST! THANKS AND GOD BLESS.
9514 1404 393
Answer:
let a, c represent costs for adults and children, respectively12c+3a=162; 8c+3a=122Step-by-step explanation:
You are asked only for the setup, not the solution.
I find it convenient to use variable names that remind me of what they stand for. Here, we're asked for the admission prices for adults and children, so 'a' and 'c' are convenient variables to represent those values.
Let a represent the admission price for an adult.
Let c represent the admission price for a child.
__
The first sentence gives a relation between the numbers and the total cost:
162 = 12c +3a
The second sentence gives a different relation:
122 = 8c +3a
These are the "system of equations."
_____
You aren't asked for the solution, but it is (a, c) = (14, 10). It can be found easily by subtracting the second equation from the first.
Can someone please help
Answer:
i got no clue
Step-by-step explanation:
ignc
Which statement is true about the data sets of two sets of quiz scores?
Sample A: 5, 5, 5, 5, 5 Sample B: 2, 2, 2, 2, 17
Select one:
Samples A and B have the same mean, but Sample A has a smaller median than Sample B.
Samples A and B have the same median, but Sample A has a larger mean than Sample B.
Samples A and B have the same median, but Sample A has a smaller mean than Sample B.
Samples A and B have the same mean, but Sample A has a larger median than Sample B.
Answer: Samples A and B have the same mean, but Sample A has a larger median then Sample B.
Step-by-step explanation:
The median is the middle number in the sequence.
To find the median, place the numbers in order. Then take away, or cross out, one number from each side. Keep going until you are down to one or two numbers. If there is only one number left, that’s your median. If two, add the numbers together and divide by 2.
The mean is the average. To get the mean you add up all the values and subtract that sum by how many numbers there are in the sequence.
Option D is correct for the given conditions, Samples A and B have the same mean, but Sample A has a larger median than Sample B.
What are measures of central tendency?The descriptive summary of a data set is known as the central tendency in statistics. It reflects the center of the data distribution through the use of a single number from the dataset. Additionally, it only provides a summary of the dataset rather than information on specific data within the dataset. In general, several statistical metrics can be used to determine a dataset's central tendency.
Given the data sets of two sets of quiz scores,
Sample A = 5, 5, 5, 5, 5
sample B = 2, 2, 2, 2, 17
mean is the average of total samples,
mean of sample A = (5 + 5+ 5 + 5 + 5 )/5
mean of sample A = 5
Mean of sample B = (2 + 2 + 2+ 2 + 17)/5
mean of sample B = 5
since the mean of both sample are same,
median is the central digit of sets
median of A is 5 and the median of B is 2,
so the median of sample A is larger than sample B.
Hence option D is correct.
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A right triangle has a hypotenuse of 61 mm and one side is 11 mm long. What's the perimeter and area?
Answer: P = 132mm A = 330 mm^2
Step-by-step explanation:
. Two bicyclists, Sarah and Emily, depart from the same location. Sarah heads N55°E at an average speed of 6 km/hr. Emily heads S20°E at an average speed of 10 km/hr. What is the distance between them after 30minutes?
Answer:
The distance between them after 30 minutes is 6.5 km.
Step-by-step explanation:
Speed = [tex]\frac{distance}{time}[/tex]
Sarah's speed = 6 km/hr = 1.6667 m/s
Emily's speed = 10 km/hr = 2.7778 m/s
The measure of angle between their bearings = [tex]105^{o}[/tex]
After 30 minutes (1800 seconds);
distance = speed x time
Sarah would have covered a distance = 1.6667 x 1800
= 3000 m
= 3 km
Emily would have covered a distance = 2.7778 x 1800
= 5000 m
= 5 km
The distance between them, a, can be determined by applying the cosine rule;
[tex]a^{2}[/tex] = [tex]b^{2}[/tex] + [tex]c^{2}[/tex] - 2bcCos A
= [tex]5000^{2}[/tex] + [tex]3000^{2}[/tex] -2(5000 x 3000) Cos 105
= [tex]5000^{2}[/tex] + [tex]3000^{2}[/tex] -2(5000 x 3000) x (-0.2588)
= 2.5 x [tex]10^{7}[/tex] + 9 x [tex]10^{6}[/tex] + 7764000
= 41764000
a = [tex]\sqrt{41764000}[/tex]
= 6462.5073
a = 6462.5 m
The distance between them after 30 minutes is 6.5 km.
giving 5 stars to right one
Find the area 8.4mm and 25.5mm
Answer:
214.2mm
Step-by-step explanation:
To find area (I'm assuming a rectangle since you didn't specify) All you need to do is multiply the two to find area.
PLEASE HELP ITS URGENT!!!!!!
Answer:
LCD-3x(x+2)
Final answer- x2-4x+4/ 3x2+6x
Step-by-step explanation:
okay so LCD is 3*x*(x+2)
= 3x(x+2)
so multiyling the fist expresion by x+2 and the second by x we get
2x+4+ x2-6x/ 3x(x+2)
= so
x2-4x+4/3x(x+2)
x2-4x+4/ 3x2+6x
if my answer helps please mark as brainliest.
Read each rule on the park sign. Write the possessive pronoun in the space provided.
• Use the park at your own risk. _________________
• Parents are responsible for the safety and supervision of their children. _________
• Our picnic tables are for eating. Please be respectful of property. ____________
• Owners are responsible for the behavior of their dog at all times. ____________
• Remember to take what is yours with you when you leave. _____________
Answer:
• Own.
• Their.
• Our.
• Their.
• Yours.
Explanation:
Possessive pronouns are used to show possession or ownership of a thing. In simple words, it shows the possession relationship of a thing with a person.
In the given sentences, the possessive pronouns are as follows-
• Own. Here, the use of "own" implies that whoever uses the park is responsible for their safety or anything that might happen to them.
• Their. Here, the possessive pronoun "their" is used to show that the children belong to the parents.
• Our. "Our" shows the possessive nature of the picnic tables to the speaker.
• Their. The same case with the second sentence. "Their" shows ownership of the dogs.
• Yours. "Yours" is used to talk about what belongs to you only.
4⁄3 b − 11 = 25what does b equal.
Answer:
27
Step-by-step explanation:
4/3b=25+11, 4/3b=36,b = 36*3/4 so b = 27
a - 13 < 3
what does a equal
Answer:
A=11
Step-by-step explanation:
11-13=2 and 2 is less than 3
Answer:
Step-by-step explanation:
Input:
a - 13<3
a<16
please help 52 points
Answer: X
Step-by-step explanation: Because 6x3= 18
0.201149425287356 round to the nearest 0.1
Answer:
0.2
Step-by-step explanation:
0.201149425287356
0.20114942529
0.20115
0.2
You need to fence in a rectangular piece of land for your dog to run and play. The length is 3 times the width. If the perimeter is 120 ft, what are the dimensions of your very own dog park?
Answer:
Width = 15 feet
Length = 45 feet
Step-by-step explanation:
You need to fence in a rectangular piece of land for your dog to run and play. The length is 3 times the width. If the perimeter is 120 ft, what are the dimensions of your very own dog park?
Perimeter of a rectangle = 2L + 2W
The length is 3 times the width.
L = Length = 3W
W = Width
P = 120 ft
Hence:
120 = 2L + 2W
120 = 2(3W) + 2W
120 = 6W + 2W
120 = 8W
W = 120/8
W = 15 feet
Solving for Length
L = 3W
L = 3 × 15 feet
L = 45 feet
Therefore, the dimensions of your very own dog park is
Width = 15 feet
Length = 45 feet
20 is 80 percent of what number?
Answer:
20 is 80 of 25
Explanation:
20x10/8=25
A percentage is a way to describe a part of a whole. 20 is 80% of 25.
What are Percentages?A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Let the number be x. Therefore, we can write,
80% of x = 20
0.80 × x = 20
x = 20/0.8
x = 25
Hence, 20 is 80% of 25.
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help with these questions for brainliest
Answer:
4 is b
7 is c
Step-by-step explanation:
have a great day :D
Answer:
question 1: B question 2: i think C im not sure tho i hope this helps
Step-by-step explanation:
help me please help me I'll give all my points if you help please tall help
There are 20 circles and 12 squares. What is the simplest ratio of squares to circles?
Answer:
10 to 6
Step-by-step explanation:
Because the greatest common factor of 20 and 12 is 2 devide the two numbers by two and get 10 and 6, so 10:6.