A painter took 15 hours to paint 12 rooms in a building. Choose all true statements about the painter's rate of speed
Answers
Answer: It’s B E and D
Step-by-step explanation:
Related Questions
PLEASE HELP!! I don't really know how to solve this.
Answers
Answer:
x=13
y=14
Step-by-step explanation:
We know that angle JNK is equal to angle MNL. We also know that angle JNK and angle KNL are supplementary.
Knowing this, we can write two equations: [tex]4x-1=3y+9[/tex] and [tex](4x-1)+(2x+6y+19)=180[/tex]. We can solve for y in the first equation. Subtracting 9 from both sides gives us [tex]4x-10=3y[/tex]. Dividing both sides by 3 gives us [tex]\frac{4x-10}{3} =y[/tex].
We can plug that in to the second equation to get [tex](4x-1)+(2x+6(\frac{4x-10}{3} )+19)=180[/tex]. Expanding the second parenthesis, we get [tex]2x+8x-20+19[/tex] which equals [tex](10x-1)[/tex]. We now have [tex](4x-1)+(10x-1)=180[/tex]. Expanding gives us [tex]14x-2=180[/tex]. Adding 2 to both sides gives us [tex]14x = 182[/tex]. Dividing both sides by 14 gives us [tex]x=13[/tex].
We can now plug 13 into the above equation to solve for y. [tex]y= \frac{4*13-10}{3}[/tex] Solving that gives you [tex]y=14[/tex].
write a mathematical equation and calculate the area of the irregular polygon
Answers
Find the value of the
trig function
a. Cos Ɵ = 2/5 find Tan Ɵ
b. Cosec Ɵ = 7/3 find Cos Ɵ
c. Cot Ɵ = 4/3 find Sec Ɵ
d. Tan Ɵ = 3 find Cosec Ɵ
Answers
Answer:
a.
cos θ = 2/5, tan θ = ?
tan θ = sin θ / cos θ tan θ = √sin² θ / (2/5) tan θ= 5√(1 - cos²θ) / 2 tan θ = 5√(1 - 4/25) / 2 tan θ = 5√(21/25) / 2 tan θ = √21 / 2b.
cosec θ = 7/3, cos θ = ?
cosec θ = 1/ sin θ cosec θ = 1/ √(1 - cos²θ) √(1 - cos²θ) = 1 / cosec θ1 - cos²θ = (1 / (7/3))² cos²θ = 1 - 9 / 49cos²θ = 40/49cos θ = √40/49cos θ = 2√10/7c.
cot θ = 4/3, sec θ = ?
cot θ = cos θ / sin θcos θ = cot θ * sin θcos θ = 4/3 * √(1 - cos²θ)9cos²θ = 16(1 - cos²θ)25cos²θ = 16cos²θ = 16/25cos θ √16/25cos θ = 4/5sec θ = 1/ cos θsec θ = 1/ (4/5)sec θ = 5/4d.
tan θ = 3, cosec θ = ?
sin²θ + cos²θ = 11 + cos²θ/sin²θ = 1/ sin²θ1 + 1/tan²θ = cosec²θ1 + 1/9 = cosec²θcosec²θ = 10/9cosec θ = √(10/9)cosec θ = √10 / 3what is the area of the rectangular piece of wood?
Answers
Answer:
2x^2 + 7x + 3 is the area of the rectangular piece of wood.
Step-by-step explanation:
Here,
Length ( l ) = x + 3
Breadth ( b ) = 2x + 1
Formula : -
Ar ( rectangle ) = lb
lb
= ( x + 3 ) ( 2x + 1 )
= x ( 2x + 1 ) + 3 ( 2x + 1 )
= 2x^2 + x + 6x + 3
= 2x^2 + 7x + 3
Use 1% or 10% method to estimate. Show all work. 38% of 15
Use 1% or 10% method to estimate. Show all work. 4% of 220
Use 1% or 10% method to estimate. Show all work. 29% of 75
would like it soon, its homework due in a bit.
Answers
Answer:
DIVIDE THE TWO ANWSER
Step-by-step explanation:
Rosa made a mosaic wall mural using 44 black tiles, 30 blue tiles and 26 red tiles. Enter a percent to represent the number of red tiles in the mural. The number of red tiles in the mural represents ___%
Answers
26/100
Step-by-step explanation:
26%
44+30+26=100
26/100
0.26
26%
Solve the system: 10x-9y=8 21y+15x=0.5
PLEASE HELP NEED ASAP
Answers
Answer:
x = 1/2
y = -1/3
Step-by-step explanation:
10x - 9y = 8 (Multiply by 3)
15x + 21y = 0.5 (Multiply by -2)
30x - 27y = 24
-30x - 42y = -1
-69y = 23
y = -1/3
10x - 9y = 8
10x - 9(-1/3) = 8
10x + 3 = 8
10x = 5
x = 1/2
Each side of a square kitchen tile is 3 inches long. What is the tile's perimeter?
please no links, thank you!
Answers
3 x 4 = 12
You pull a marble from a bag with 20 red 20 white and 10 green marbles. You hold onto it and then pull another marble. What is the probability of pulling a red marble and then pulling a green marble?
Answers
The probability of pulling a red marble and then pulling a green marble is,
⇒ 3 / 5
What is mean by Probability?The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
We have to given that;
You pull a marble from a bag with 20 red 20 white and 10 green marbles.
Here, Total number of marbles = 20 + 20 + 10
= 50
Thus, The probability of pulling a red marble is,
⇒ 20 / 50
⇒ 2 / 5
And, The probability of pulling a green marble is,
⇒ 10 / 50
⇒ 1 / 5
Therefore, The probability of pulling a red marble and then pulling a green marble is,
⇒ 2 / 5 + 1 / 5
⇒ 3 / 5
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Jamal can run 0.5 miles in 4 minutes. If he keeps the same pace and runs for 14.4 minutes, how many miles will he have run?
Answers
Answer:
1.8
Step-by-step explanation:
First, we calculate the speed. That is 0.5/4. Then we multiply by the min. he ran which is 14.4. The answer gets you to 1.8
By the way, can you follow me on Brainly?
Thanks!
Answer:
14/4=3.5
3.5x0.5=1.75 miles
He will have run 1.75 miles
A survey of Mrs. Ramirez's students showed that 30
students will have pizza fonlunch, 17 will have macaroni
and cheese, 12 will have a hamburger, and 5 will have
chicken fingers. Suppose Mrs. Ramirez surveys all 1 200
students in the school. How many students can she
expect to choose hamburgers for
Hunch?
Answers
Answer: 480
Step-by-step explanation:
We can create a ratio for this!
We have:
[tex]\frac{number of hamburgers}{total students}[/tex]= [tex]\frac{new number of hamburgers}{new number of students}[/tex]
We can use substitution to input the information we already know:
[tex]\frac{12}{30}[/tex] = [tex]\frac{x}{1200}[/tex]
Using cross multiplication, we get:
1 200(12) = 30x
14,400 = 30x
[tex]\frac{14,400}{30}[/tex]=[tex]\frac{30x}{30}[/tex]
x = 480
Hope this helps! :)
The number of students expect to have hamburgers for lunch is 225 students.
What is a word problem?
A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
For the given situation,
Mrs. Ramirez's survey on students
Number of students have pizza = 30
Number of students have macaroni and cheese = 17
Number of students have a hamburger = 12
Number of students have chicken fingers = 5
Total number of students = 64.
Now, Mrs. Ramirez surveys all 1 200 students.
Then number of students expect to choose hamburgers for lunch can be found by,
[tex]\frac{Number of students have hamburgers}{Total number of students} = \frac{Number of students expect to have hamburgers}{ Total number of students}[/tex]
Let x be the number of students expect to have hamburgers.
⇒ [tex]\frac{12}{64}=\frac{x}{1200}[/tex]
⇒ [tex]x=\frac{(12)(1200)}{64}[/tex]
⇒ [tex]x=225[/tex]
Hence we can conclude that the number of students expect to have hamburgers for lunch is 225 students.
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ANSWER THE QUESTION FOR BRAINLIEST
Answers
Answer:
not a straight line
Step-by-step explanation:
Linear has the word "line" in it. A linear relation has a graph shaped like a straight line.
Nonlinear means "not like a straight line".
Answer: not a straight line
Use graphs and tables to find the limit and identify any vertical asymptotes of the function.
limit of 1 divided by the quantity x minus 10 squared as x approaches 10
PLEASE ASNWER ASAP WITH WORK IN A TABLE PLEASE
Answers
Answer:
Step-by-step explanation: Given is a function as 1 divided by the quantity x minus 10 squared
Mathematically translating we get
the function
Since the function become undefined at x=10 we get
vertical asymptote is
x=10
Limit x tends to 10 of f(x) will exist since both limits are equal
This is because let x tends to 0 from left.
Then we have
f(x) =
Right limit also will be +infinity
This is because the curve is symmetrical about x=10 and hence limit would be +infinity.
Use the geometric series 5^Ž (8)*-* to answer each question.
n=1
What are the terms in the series?
1 + 8 + ___+ ____+ ____
Answers
Answer:
First one is:
1 + 8 + 64 + 512 + 4096
Second one is:
73
Answer:
First one is:
1 + 8 + 64 + 512 + 4096
Second one is:
73
Step-by-step explanation:
In a sequence of numbers, a4=12, a5=14, a6=16, a7=18, and a8=20.
Which equation can be used to find the nth term of the sequence, an?
a) an=2n+4
b) an=2n+12
c) an=3n
d) an=3n+12
I'm pretty sure it's a, but I just wanna check if I did the work right!
Answers
Answer:
you are right, it's a)❤
Step-by-step explanation:
a4=12---> put the formula in it
2×4+4=12
a5=14---> 2×5+4=14
a6=16---> 2×6+4=16
.
.
.
hope it helps❤
look at pic 10 pts will mark brainilest
Answers
Answer:
There is nothing attached
Step-by-step explanation:
Where is the picture?
write down the number in a condensed form:
200 + 40 + 5 +0.3 + 0.07
Answers
Answer:
answer is 240.37
Step-by-step explanation:
i added each one together add the ends and then got 240.37 (btw I'm in 4 grace)
The condensed form of the given expression 200 + 40 + 5 +0.3 + 0.07 is 245.37.
Given expression is [tex]200 + 40 + 5 +0.3 + 0.07[/tex]
It is required to find condensed form.
What is condensed form of an expression?Condensed form is the representing the expression in the composite way.
By solving the expression
[tex]=200 + 40 + 5 +0.3 + 0.07[/tex]
[tex]=245.37[/tex]
Thus, the condensed form of the given expression is 245.37.
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someone help me pls
Answers
Answer:
x=10
Step-by-step explanation:
Both of the tangents will be equal.
6x+17=16x-8
or, 10x=25
So, x=2.5
Rounding to the nearest tenth is 10.
If the two spinners below are spun, what is the probability that the numbers will add to more than 4?
Answers
The image of the labeled spinner isn't attached
Answer:
Kindly check explanation
Step-by-step explanation:
Answering hypothetically ;
First create a sample space using the label of the two spinners ;
Each space will be the sum of the possible number that shows up on each turn of the spinner.
From the sample space, count the number of spaces where, the sun is greater than 4, that is the required outcome ; = x
Then the total number of samples in the sole space = total possible outcomes = y
Hence,
P(obtaining a sum greater than 4) = required outcome / Total possible outcomes
= x / y
Pablo has had his model bridge approved and is now able to start construction on it.The model is 2 feet and 3 inches tall. If the scale for the actual bridge is 1 inch = 3 feet, how tall will his cover bridge be?
Answers
Answer:
81 feet tall
Step-by-step explanation:
2*12=24
24+3=27
27*3=81
Please help due in 5 min.
Answers
Answer:
1
Step-by-step explanation:
3×60=180
180÷45=4
4-3=1
What is the product of the polynomials below?
(4x^3+8x)(x^2-3)
Answers
Answer:
4x^5 - 4x³ - 24x
Step-by-step explanation:
Answer:
4x^5 - 4x³ - 24x
Step-by-step explanation:
Distribute
[tex](4x^3+8x)(x^2-3)[/tex]
[tex]4(x^{2} -3)x^{3} +8x(x^{2} -2)[/tex]
Distribute
[tex]4(x^{2} -3)x^{3} +8x(x^{2} -2)[/tex]
[tex]4x^{5} -12x^{3} +8x(x^{2} -3)[/tex]
Distribute
[tex]4x^{5} -12x^{3} +8x(x^{2} -3)[/tex]
[tex]4x^{5} -12x^{3} +8x^{3} -24x[/tex]
Combine like terms
4x^5 - 4x^{3} - 24x
WORTH A LOT OF POINTS. WILL GIVE BRAINLEIST THINGY TO WHOEVER SOLVES IT!
Answers
Answer:
the area of the small square 4c
the total area of the 4 triangles is 2ab
a^2+2ab+b^2 = a^2+2ab+b^2
subtracting gives 2ab from both sides gives us a^2+b^2
Step-by-step explanation:
Answer:
Step-by-step explanation:
PLEASE I NEED THIS NOW, AND EXPLICATION
Answers
Answer:49.5
Step-by-step explanation:so if 1 inch equal to 3 yards then 7.5 will be 21.5 and 6 inchs will be 18 so if you all together you will get 49.5
Answer:
36
Step-by-step explanation The answer would be 36 because A=a2=62=36 and the math added to 36 hope this helped.
Find the a. Median b. Median c. Mode and d. Range of the following scores 60, 70, 90, 70, 80, 65, 95, 80, 100, 60
Answers
Answer:
median-75
mode-70
range-40
mean-77
Step-by-step explanation:
To the nearest tenth of a centimeter what is the length of side ab
Answers
The length of side AB in the given triangle is 22.6. The correct option is the first option 22.6
Calculating the side length of a triangleFrom the question, we are to determine the length of side AB in the given triangle.
Using the law of sines, we can write that
AB/sinC = BC/sinA
From the diagram,
C = 50°
BC = 19
A = 40°
Thus,
AB/sin50° = 19/sin40°
AB = (19 × sin50°) / sin40°
AB = 22.6433
AB ≈ 22.6
Hence, the length is 22.6
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Which statement correctly compares the function shown on this graph with
the function y = 5x + 5?
-10-8-642
2 4 6 8 10
A. The function shown on the graph has a smaller rate of change and
a lower starting point.
B. The function shown on the graph has the same rate of change, but
a lower starting point.
OC. The function shown on the graph has the same rate of change, but
a higher starting point.
D. The function shown on the graph has a smaller rate of change, but
the same starting point.
Answers
What is 74 in standard form? O A. 11 OB. 28 Oc. C. 2, 401 O O D. 16,384
Answers
Answer:
oc2
Step-by-step explanation:
because
There were 650 fruit in a fruit stall. 62% of the fruit were sold. How many fruit were left?
Answers
Answer:
62/100 multiplied by 650 which is 403 fruits left
What is the solution to the equation StartFraction 1 Over h minus 5 EndFraction + StartFraction 2 Over h + 5 EndFraction = StartFraction 16 Over h squared minus 25 EndFraction?
Answers
Answer:Hi i think its 50 x 16= ur answer think about that hopes this helpp!!! :D
Step-by-step explanation:
Answer:
the answer is h=7
Step-by-step explanation: