Answer:
Step-by-step explanation:
no of men no of days
15 20
25 let be x
it is in indirect proportion
15/25=x/20
do cross multiplication
25*x=20*15
25x=300
x=300/25
x=12
therefore ot will take 12 day to complete the same wall by 25 men.
a rectangular garden measures 300m by 460m. what is the perimeter of the garden ? in metres?
Answer:
hgvjkhy88ubuybyi
Step-by-step explanation:
hjuoihgvgbhko
Please help. Math is not for me especially not trigonometry
Shelia is baking a few cakes for the bake sale for her school. Each cake requires 5/6 cups of sugar. How many cakes can she bake if she has 7 1/2 cup of sugar?
Which of the following is the solution to this system of equations?
-2x + 3y = 18
x = -y + 1
Possible answers
No solution Infinite solution 4,-3 -3,4
Answer:
-3, 4
Step-by-step explanation:
__________________
C is a circle with radius r. Which of the following is true? Select all that apply
A. The diameter of C is 2r
B.the circumference of C is pi*r
C: the circumference of C is 2pi*r
D. One quarter of the circle has length (pi*r)/4
E. One quarter of the circle has length(pi*r)/2
Answer:
A and C and E are correct
Step-by-step explanation:
Circumference = 2*pi*r
C is a circle with a radius r. The correct statements are; A. The diameter of C is 2r , C: The circumference of C is 2pi*r, E. One-quarter of the circle has a length(pi*r)/2.
What is the area of the circle?Supposing that a considered circle has its radius of 'r' units.
Then, its area and circumference are given as:
[tex]Area = \pi r^2 \: \rm unit^2\\ \\Circumference = 2\pi r \: \rm units[/tex]
The radius of a circle is half of its diameter.
Therefore, the correct statements are;
A. The diameter of C is 2r
C: The circumference of C is 2pi*r
E. One-quarter of the circle has a length(pi*r)/2
Learn more about the equation of a circle here:
https://brainly.com/question/10165274
#SPJ2
guess what property is used:
[tex] \frac{-4}{7} + \frac{5}{8} = \frac{5}{8} + ( \frac{ - 4}{7} )[/tex]
[tex]( \frac{1}{2} \times \frac{4}{7} ) \times ( \frac{ - 2}{3} )= \frac{1}{2} \times ( \frac{4}{7} \times ( \frac{ - 2}{3} ))[/tex]
7/-8 x (-8/7)=1
i will mark u brainliest if u answer this correctly
Answer:
Step-by-step explanation:
1 no is commutative property.
2 no is associative property
3 no is multiplicative inverse property.
Given circle o, what is the length of arc AB if m AOB =40° ?
Radius is 9
Answer:
Arc length = 6.28 units
Step-by-step explanation:
[tex]Arc \ length = 2 \pi r \frac{ \theta}{360} = 2 \times \pi \times 9 \times \frac{40}{360} = 2\pi = 6.28[/tex]
Help me pls this is hard
Answer:
it is C I did the before it is really easy
GIVING OUT BRAINLIEST ANSWER PLSS HELP!
Answer:
It should be c
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The answer is A
Very few circles are congruent. Certainly if a circle has a radius of 8 and another one 2 city blocks away also has a radius of 8, both are congruent. But if one of them has a radius of 4 and the other a radius of 10, they are not congruent.
A does not have to be true.
What is the end behavior of f(x)=(x−3)3−4x3(x+2)3+3(x−1)6
?
As x→−∞, f(x)→−∞
. As x→+∞, f(x)→−∞
.
As x→−∞, f(x)→−∞
. As x→+∞, f(x)→+∞
.
As x→−∞, f(x)→+∞
. As x→+∞, f(x)→−∞
.
As x→−∞, f(x)→+∞
. As x→+∞, f(x)→+∞
.
Answer:
g8
Step-by-step explanation:
What is the area of the figure below?
There are five pizzas at
the party. Half of them
have already been eaten.
How many pizzas are
left?
Given R=1/4 Q^2 solve for Q
9514 1404 393
Answer:
Q = ±2√R
Step-by-step explanation:
Take the square root:
±√R = 1/2Q
Multiply by 2:
Q = ±2√R
Solve for t 8t-{(6t-1)/2}=5
I'm not sure how to go about a removing the fraction here. I'm 20 years rusty.
Answer:
t=9/10 Hope that helped
A bag contains 5 blue, 4 red, 7 black and 2 white marbles. What is the probability of selecting a marble that is NOT white?
5+4+7+2=18
18-2=16
16/18
88% chance of selecting a marble that isnt white
Answer:
8/9
Step-by-step explanation:
P(white) = (2) ÷ (5+4+7+2) = (2)/(18) = 1/9
P(not white) = 1 - P(white) = 1 - 1/9 = 8/9
How many outcome sequences are possible when a die is rolled 4 times where we say for instance that the outcome is 3 4 3 1 if the first roll landed on 3 the second on 4 the third on 3 and the fourth on 1
Answer:
the possible outcome sequences when a die is rolled 4 times is 1296
Step-by-step explanation:
Given the data in the question;
a die is rolled 4 times
and outcomes are { 3, 4, 3, 1 }
we know that; possible number of outcomes on a die is n = 6{ 1,2,3,4,5,6 }
Now when we roll a die lets say, r times
then the total number of possible outcomes will be;
N = [tex]n^r[/tex]
given that; r = 4
Hence if we roll a die 4 times;
Total number of possible outcome N = 6⁴
N = 1296
Therefore, the possible outcome sequences when a die is rolled 4 times is 1296
A baker makes 12 dozen
cookies, 18 dozen muffins, and
22 dozen scones every day.
How many baked goods does
she make in all every day?
Answer:
624
Step-by-step explanation:
12+18+22=52 52×12=624
Answer:
624
Step-by-step explanation:
12x12= 144 cookies
18x12= 216 muffins
22x12= 264 scones
144+216+264= 624
A coffee vending machine fills 100 cups of coffee before it has to be refilled. On a Monday, the mean number of ounces filled in a cup of coffee was 7.5. The machine is known to have a standard deviation in filling volume of 0.25 ounces. Find a 99% confidence interval for the mean number of ounces dispensed by this machine.
Answer:
The 99% confidence interval for the mean number of ounces dispensed by this machine is (7.44, 7.56).
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]
Now, we have to find z in the Z-table as such z has a p-value of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.005 = 0.995[/tex], so Z = 2.575.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
[tex]M = 2.575\frac{0.25}{\sqrt{100}} = 0.06[/tex]
The lower end of the interval is the sample mean subtracted by M. So it is 7.5 - 0.06 = 7.44 ounces.
The upper end of the interval is the sample mean added to M. So it is 7.5 + 0.06 = 7.56 ounces.
The 99% confidence interval for the mean number of ounces dispensed by this machine is (7.44, 7.56).
I need this by Friday please !
Find a degree measure of each angle in the triangle!
Answer:
B=19
C=42
D=119
Step-by-step explanation:
First, fine the value of x, than use that in each angle to find the measurement.
All angles together in the triangle equal 180
Set your formula up as
180=(x+2)+(3x-9)+7x
180=x+3x+7x+2-9
180-2+9=11x
187=11x
187/11=x
17=x
Angle B
B=x+2
B=17+2
B=19
Angle C
C=3x-9
C=3*17-9
C=42
Angle D
D=7x
D=7*17
D=119
Now add all 3 tougher to check your work
19+42+119 = 180
The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an equation that represents the total cost (C) of a service for m miles of towing. Express your mathematical thinking.
Marsha can type 120 words per minute. Which ratio describes this relationship between her words typed and time?
A. 119:120. B. 1: 121. C. 121/120. D 120/1
PLEASE HELP
Answer:
Answer is 120/1
Step-by-step explanation:
Marsha can type 120 words per minute. Which ratio describes this relationship between her words typed and time?
Marsha an type in 1 minute = 120 words
The ratio can be described word types and time = 120 words per 1 min
= 120/1
Answer: D
Step-by-step explanation:
My answers correct becuase, A ratio is just the numbers put together put a : in between them. So if it is asking us words to the time all we have to do is put 120 and then a semicolone and 1. 120:1 And D is the one that has that answer so D is correct. Additonal Information: Also sometimes you would have to divide the number equally to get the ratio.
Hope This Helps!
PLZ ANSWER WILL GIVE BRAINLIEST!!!
Answer:
4W+8+4W+4=180
8W+12. =180
. 8W=180-12
8W=168
W=21
BPC =4W+4
DE=360-(4W+4+4W+8+4W+4+2W+11)
=360-(14W+27)
=360-(14×21)-27
=360-321
= 39
Elton has three quarters in his pocket and some nickels. The total value of the coins is $1.05. Which equation could be used to determine the total number of nickels (n) in his pocket.
A. 3 + 0.05n = 1.05
B. 0.75 + 0.05n = 1.05
C. 3 + n = 1.05
D. 3n + 5 = 1.05
Answer:
C
plz mark brainliest
Which equation can be used to solve for x in the following diagram
Answer:
10x+10 = 110
Step-by-step explanation:
The two angles are vertical angles and vertical angles are equal
10x+10 = 110
Given f(x) = 2x – 6, find f( – 4).
Answer:
f(-4) = -14
Step-by-step explanation:
f(x) = 2x – 6
Let x = -4
f(-4) = 2*-4 -6
f(-4) = -8-6
f(-4) = -14
Answer:
The answer is -14
Step-by-step explanation:
f(-4) = 2(-4) - 6
= -8 - 6
= -14
Find the graph of the inequality y+2<1/4(x-4)
Answer:
0
Step-by-step explanation:
two algebra questions
PLEASE I NEED HELP WITH THIS PROBLEM
Order the following numbers from least to greatest.
A. -12,-35,-23,58
B.-12,-35,58,-23
C.-23,-35,-12,58
D.-35,-23,-12,58
Explain how
Answer:
D. -35,-23,-12,58
Step-by-step explanation:
Image a line that goes to the negative, as well as the positives, -35 would be lower on that line
-35 -23 -12 0 12 23 35 58
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please help asap thanks
Answer:
All functions are relations
Step-by-step explanation:
Anna wants to buy grass seed to cover her whole lawn, except for the pool. The pool is 7 1 2 m by 3 1 4 m. Find the area the grass seed needs to cover.
Answer:
223,568
Step-by-step explanation: