Answer: The equation would NOT help us solve for the length and width of the classroom is "[tex]x + 2y = 90[/tex]".
Step-by-step explanation:
Let y be the width of the rectangular classroom floor and x be the length of the rectangular classroom floor .
Given ,
The perimeter of a rectangular classroom floor is 90 feet.
The length of the floor is twice the width.
i.e. Length =2 (width)
i.e. x= 2y ..(i)
Also, perimeter = 2(length+width)
[tex]i.e. 2(x+y)=90\\\\\Rightarrow\ 2x+2y=90[/tex]
When we put value of x from (i), we get
[tex]2(2y) + 2y = 90[/tex]
Hence, the equation would NOT help us solve for the length and width of the classroom is "[tex]x + 2y = 90[/tex]".
Express the form 1: n
5:20
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5 : 20
Divide both sides by 5 to get the answer
5/5 = 1
20/5 = 4
Thus, the answer is 1 : 4
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What is 3 over 14 to the power of 2
which number line represents the solution set for the inequality 3(8 - 4x) < 6(x - 5 )
Answer:
3 <x
Step-by-step explanation:
3(8 - 4x) < 6(x - 5 )
Divide each side by 3
3/3(8 - 4x) < 6/3(x - 5 )
8 -4x < 2(x-5)
Distribute
8 -4x < 2x-10
Add 4x to each side
8 -4x+4x < 2x+4x-10
8 < 6x-10
Add 10
8+10< 6x-10+10
18<6x
Divide by 6
18/6 < 6x/6
3 <x
Start by distributing on both sides of this inequality.
This gives you 24 - 12x < 6x - 30.
Put your x's together on the left by subtracting 6x from both sides.
This gives you 24 - 18x < -30.
Now subtract 24 from both sides to get -18x < -54.
Now divide both sides by -18 and x > 3.
Remember to switch the direction of the inequality sign
when you divide both sides by a negative number.
I have also graphed it below on the number line.
plzz helppp i don't understand
Answer:
40
Step-by-step explanation:
The denominators are 4, 5, and 8.
Write the prime factorizations:
4 = 2²
5 = 5
8 = 2³
To find the least common denominator, multiply the prime numbers with the highest exponents.
2³ × 5 = 40
Answer:
LCD=40
EXPLANATION= To find the least common denominator first convert all integers and mixed numbers (mixed fractions) into fractions. Then find the lowest common multiple (LCM) of the denominators.
how to solve x^2-5x+13=1
Answer:
It can't be solved - there are no real roots
For 30 persons or fewer $10 per person. For every additional person $9 per person.Irene paid the company $390 for her department event. How many people did she cater for?
Answer:
She catered for 40 people.
Step-by-step explanation:
According to the information given, you can write an equation that indicates that 30 people multiply for its cost that is $10 plus the number of people after 30 for its cost that is $9 is equal to $390. According to this, the equation is:
10(30)+9x= 390, where
x= number of people after 30
Then, you can solve for x:
300+9x= 390
9x=390-300
9x= 90
x=90/9
x=10
The answer is that she catered for 40 people, 30 people at a cost of $10 and 10 people for a cost of $9.
Super easy question for y’all, ez points. I’m just dumb. :) pls help
Answer:
0
Step-by-step explanation:
Ends at the same place
Answer:
0
Step-by-step explanation:
Solve the equation for the letter d: C= (3.14)(d)
Answer:
d = [tex]\frac{C}{3.14}[/tex]
Step-by-step explanation:
Given
C = 3.14d ( isolate d by dividing both sides by 3.14 )
[tex]\frac{C}{3.14}[/tex] = d
Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!
Answer:
lower price = 3
higher price =11
Step-by-step explanation:
p(x) = -2(x-3) (x-11)
Setting equal to zero
0 = -2(x-3) (x-11)
Using the zero product property
x-3 = 0 x-11 =0
x=3 x = 11
Which quadrant is (3,-3) in?
Quadrant 3 Quadrant 4 Quadrant 1 Quadrant 2
I , II, III, IV
Answer:
Quadrant 4
Step-by-step explanation:
Answer: 4
Step-by-step explanation:
Which expressions are equivalent to x+x+x+2
Choose 2 answers:
Answer: I don't know the options but from this situation it is 3x+2 or x=3/2
Step-by-step explanation:
You add all the x together and that's the first option second divide it so x us all by itself
If x equals 5, what is 2x²? Quickest gets brainliest.
Answer: 50
Step-by-step explanation:
If 5 = x
You would substitute 5 in for X and start by squaring 5
Once you square 5 you get 25
Multiply 25 by 2 to get 50 and there is ur answer.
b) the diagram shows a triangle ABC use the tool to matk angle CAB
Answer:
This triangle is right angle triangle
Step-by-step explanation:
On a multiple-choice test, each question has 4 possible answers. A student does not know the answers to three questions, so the student guesses. What is the probability that the student gets all three questions wrong? The probability that the student gets all three questions wrong is . What is the probability that the student gets all three questions right? The probability that the student gets all three questions right is .
Answer:
P(making 3 wrong guesses) = 27/64
P(making 3 right guesses) = 1/64
Step-by-step explanation:
Number of possible answers per question = 4
Number of right answer per question = 1
Number of wrong answers per question = (4 - 1) = 3
Probability = (Number of required outcomes / Number of Total possible outcomes)
A.) probability of guess 3 questions wrong :
Probability of making a wrong guess = (number of wrong options / total number of options
P(making a wrong guess) = 3/4
Therefore,
P(making 3 wrong guesses) = 3/4 × 3/4 × 3/4 = (27/64)
B.) probability of making 3 right guesses:
P(making a right guess) = (number of right options per question / total number of options per question)
P(making a right guess) = 1/4
P(making 3 right guesses) =(1/4 × 1/4 × 1/4) = 1/64
HELP
sec(2pi/3) and csc(2pi/3)
show steps please.
Answer:
Step-by-step explanation:
First we rewrite the expression:
3sec (x) -2 = 1
3 (1 / cos (x)) -2 = 1
3 (1 / cos (x)) = 1 + 2
3 (1 / cos (x)) = 3
(1 / cos (x)) = 3/3
cos (x) = 1
x = 2 * pi * n
on the interval [0, 2pi):
x = 0
Answer:
x = 0 on the interval [0, 2pi)
30 points brainliest, whats the answer?
When the county fair opened its gates, 68 people entered the fairgrounds. After one hour, there were 1.5 times as many people on the fairgrounds as when the gates opened. After two hours, there were 1.5 times as many people on the fairgrounds as the previous hour. If this pattern continues, write the equation representing the number of people, y, at the fair x hours after the gates open.
Answer:
y=1.5x + 68
Step-by-step explanation:
68 is the starting value and it increases by 1.5 every hour.
Answer:
y = 68 ( 1.5) ^x
Step-by-step explanation:
This is exponential growth
The formula is
y = ab^x where a is the initial amount and b is the growth rate
The initial amount is 68 and the growth rate is 1.5
y = 68 ( 1.5) ^x
Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!
Answer:
B. No solutions
Step-by-step explanation:
Answer:
It is B
Step-by-step explanation:
They are both parallel to each other.
Can someone solve this problem?
Answer: 55°
Step-by-step explanation: Let me know if you need an explanation.
Answer:
X = 55°
Step-by-step explanation:
X = 180° - ( 75 + 50)°
X = 180° - 125°
X = 55°
Mrs. Jackson gives the table below to her students. In order for the function to be linear, what must a be and why? a = 22 because the rate of change is 1. a = 20 because the rate of change is 3. a = 22 because the rate of change is –1. a = 20 because the rate of change is –3.
Answer:
D
Step-by-step explanation:
a = 20 because the rate of change is –3.
What is a linear function?A linear function has one independent variable and one based variable. The independent variable is x and the based variable is y. a is the steady time period or the y-intercept. it's far the cost of the dependent variable while x = zero.
What are the requirements for functions to be linear?Which will be a linear feature, a graph needs to be both linear (a direct line) and a characteristic (matching each x-value to the most effective y-value). It must also pass a polygraph check, complete an obstacle path, and offer a minimum of 3 references. The qualifications are stringent.
Learn more about linear function here: brainly.com/question/14796161
#SPJ2
A painting measures 1 meter by 2 meters. A frame shop charges $30.00 per meter for a wooden frame. How much would it cost to buy a frame for the painting?
Answer:
$180.00
Step-by-step explanation:
The painting is rectangular and it measures 1 meter by 2 meters. The frame shop charges $30.00 per meter for a wooden frame.
To find the cost, we need to find the perimeter of the painting and then multiply it by the cost of a wooden frame per meter.
The perimeter of a rectangle is:
P = 2(L + B)
P = 2(1 + 2) = 2 * 3 = 6 m
The cost of the frame is therefore:
6 * 30 = $180.00
Two rectangular pyramids are similar. The smaller pyramid has a volume of 12 cubic feet, and
the larger pyramid has a volume of 324 cubic feet. If the smaller pyramid has a height of 6 feet,
what is the exact height (in feet) of the larger pyramid?
Volume of Big Pyramid= 324 cubic feet
Volume of small pyramid= 12
Volume of a pyramid is given as V=⅓xBasexheight
For the big pyramid
324=⅓xbasexheight
But 324= 27x12
Then for the big pyramid,
12=1/3x1/27xbasexheight
For the small pyramid
12=1/3xbasex6
Since both base are similar and from the equations derived so far
1/3x1/27xheight=1/3x6
Height=27x3x1/3x6=162feet
what is the domain of h???????HELPPP!!!!
when 5 is added to a certain number and the result is multiplied by 3, the final answer is 27. What is the original number
Answer:
Let the number be x
5 is subtracted from a certain number means it will be x - 5
The result is multiplied by 7, the final result is 63,
7 (x - 5) = 63
7x - 35 = 63
7x = 63 + 35
7x = 98
x = 98/7
x = 14
The number is 14
Answer the number is 14 and the equation is 7 (x - 5) = 63
Step-by-step explanation:
Using the appropriate arithmetic operation, the value of the original number is 4
Let the number be : p
5 added to p :
5 + pMultiply the addition by 7 :
(5 + p) × 3 = 27We can solve for p thus :
15 + 3p = 27
3p = 27 - 15
3p = 12
p = 12/3
p = 4
Therefore, the original number is 4.
Learn more : https://brainly.com/question/25625086
help me for the brainlieast answer
Answer:
37.7
Step-by-step explanation:
C=2(pi.)r
2×3.14=6.28
6.28×6=37.6
37.68 rounded is 37.
Find the area of the triangle.
Apply the area formula [tex]A=\frac{bh}{2}[/tex] to get [tex]\frac{8\cdot 14}{2}=\boxed{56\,\text{square units}}.[/tex]
Help me to solve this problem
Answer:D. 73 people
Step-by-step explanation:
365 / 5% = 7300
7300÷100=73
A
B
C
D
What statement is false choose from the letters above that match the statements :-)
Please help guys!
Thanks
Answer:
Option C
Step-by-step explanation:
A "tessellation" is a flat covering of 2D geometric shapes. A shape in a tessellation is called a "tile".
Tessellations can be in a pattern that goes 'forever', and they cannot overlap. This eliminates A and D, since they are true.
A "tessellation" cannot have any spaces. This eliminates option B, since this is true. Since a circle and an eclipse have curved sides, they can not tessellate on their own. Regular pentagons and octagons will also not tessellate on it's own. Any shape that are put together and leave a gap will not tessellate.
I have attached a picture showing why circles and pentagons will not tessellate.
So, not any 2D shape would tessellate. Option C's statement is false.
Option C should be the correct answer.
Calculate the circumference of each circle. Round your answer to the nearest hundredth.
Answer: 39.58 cm
Step-by-step explanation:
The circumference of a circle is 2 times the radius times pi or pi times the diameter. so we know the diameter is 12.6 so just multiply it by pie.
12.6 * pi = 39.584
Now rounded to the nearest hundredth is 39.58.
Solve the equation below. 29 11 7 5
Answer:
x = 11
Step-by-step explanation:
Take the fifth root on both sides.
27(x-2) = 3^5
27x-54 = 3^5
27x = 243 + 54
27x = 297
x = 297/27
x = 11
Answer:
[tex]x = 11 \\ [/tex]
Step-by-step explanation:
[tex] \sqrt[5]{27(x - 2)} = 3 \\ { (\sqrt[5]{27(x - 2} )}^{5} = {3}^{5} \\ 27(x - 2) = 243 \\ 27x - 54 = 243 \\ 27x = 243 + 54 \\ 27x = 297 \\ \frac{27x}{27} = \frac{297}{27} \\ x = 11[/tex]
