n the diagram, what is AC?
A.
6
B.
12.33
C.
10
D.
12
Answer:
since we are not given the value of AC we say that AC =6×10=60
If Saul CANELO Alvarez has 8 belts how many belts would he have it 34 were taken away
Answer:
42
Step-by-step explanation:
I would guess that Saul had 42 belts before because 42-34 is 8
Pls answer the follwing
Answer:
Step-by-step explanation:
4 (x + 2) =30
4x + 8 = 30
4x = 30 - 8
4x = 22
x = 22 : 4
x = 5.5
check
(5.5 + 2) * 4 = 30
the answer is good
Answer:
the cost of each sandwich is 5.5
Step-by-step explanation:
we have,
4(x+2) = 30
we know a(b+c) = ab+ac
so, when we open the bracket we get,
4(x+2) = 4x+4*2 which is equal to 4x+8
so, 4x+8 = 30
=> 4x = 30 - 8 [transposing method]
=> 4x = 22
=> x = 22/4
=> x = 5.5
hope this helps
help me please im like so desperate rn
Answer:
See below
Step-by-step explanation:
GCF of 36 and 4 is welllll, just 4
so 36 - 4 = 4*9 - 4 = 4 ( 9-1) ( I THINK that is what goes here)
sophie leaves school and travels east at an average speed of 40km/h, jenny leaves school one hour later and travels west at an average speed of 50km/h, determine how many hours after jenny leaves school they will be "400km" apart
Considering the speeds given, it is expected Sophie and Jenny are 400 km apart after a total of 5 hours.
How will their position change over time?Jenny:
1 hour later: 40 km east2 hours later: 80 km east3 hours later: 120 km east4 hours later: 160 km east5 hours later: 200 km eastSophie:
1 hours later: 0 km2 hours later: 50 km west3 hours later: 100 km west4 hours later: 150 km west5 hours later: 200 km westWhen wil they be 400 km apart?It is expected 5 hours later they are 400km apart because at this time each of them will be 200km away from school.
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There are 7 seniors on the high school soccer team. Two of them will be
chosen to be co-captains. How many ways are there to choose the co-
captains?
Decide if this is a permutation or a combination, and then find the number of
ways to choose the co-captains.
The action to choose two among the seven seniors to be cocaptains is a combination and there are 21 different choices.
What is a the difference between permutation and Combination?The major difference between permutation and Combination lies in the fact that the different ways of arranging a set of objects into a sequential order are termed as Permutation while one of the several ways of choosing items from a large set of objects, without considering an order is termed as Combination.
On this note, the action is a combination and the number of ways is; 7!/5!2! = 21.
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The area of a circle is 60.12cm find the length of the radius rounded to 2 dp.
Answer:
Before you write the answer to your question, make sure the question is asking for the actual value of pi or 3.14.
If the question was asking for the question to be completed with the ACTUAL VALUE of pi, then your answer is ----> 4.37
If the question was asking for the question to be completed with the rounded of pi (3.14), then your answer is ----> 4.38
It's a subtle difference, but remember, there is no such thing as close in math, it's either right or wrong.
Step-by-step explanation:
Given: Circle's Area, 60.12
As the value of pi was not directly stated, I will divide the answer into 2 portions, portion one with the answer with the actual infinite value of pi, and one where I will describe how to do it with 3.14 as pi.
Explanation with 3.14:
First thing first, know the formula for calculating the area of a circle:
[tex]A = \pi r^2[/tex]
[tex]A[/tex] stands for Area, and [tex]r[/tex] stands for Radius
Now, plug in the given values:
[tex]60.12 = \pi r^2[/tex]
Next, replace 3.14 for pi:
[tex]60.12 = (3.14)r^2[/tex]
Then, divide both sides by 3.14 ,which gives us:
[tex]19.15 = r^2[/tex]
Please note: 19.15 is rounded
Anyway, to isolate [tex]r[/tex], we take the square root of both sides:
[tex]\sqrt{19.15} = \sqrt{x^2}[/tex]
The square root and square on the right side of the equation cancel out, and we are left with:
[tex]4.38 = r[/tex]
Please note that 4.38 was rounded
The time it takes to complete a go-cart course is inversely proportional to the average speed of the go-cart. One rider has an average speed of 73.3 feet per second and completes the course in 30 seconds.
A) What is the constant of variation?
B) If another rider completes the course in 25 seconds, what was his speed?
The value of the constant of variation is 2,199 feet. The speed of the another rider is 87.96 feet/sec.
What is the directly proportional and inversely proportional relationship?Let there are two variables p and q
Then, p and q are said to be directly proportional to each other if
p = kq
where k is some constant number called the constant of proportionality.
This directly proportional relationship between p and q is written as
p∝q where that middle sign is the sign of proportionality.
In a directly proportional relationship, increasing one variable will increase another.
Now let m and n be two variables.
Then m and n are said to be inversely proportional to each other if
[tex]m = \dfrac{c}{n} \\\\ \text{or} \\\\ n = \dfrac{c}{m}[/tex]
(both are equal)
where c is a constant number called the constant of proportionality.
This inversely proportional relationship is denoted by
[tex]m \propto \dfrac{1}{n} \\\\ \text{or} \\\\n \propto \dfrac{1}{m}[/tex]
As visible, increasing one variable will decrease the other variable if both are inversely proportional.
A.) The time it takes to complete a go-cart course is inversely proportional to the average speed of the go-cart. Therefore, the relationship can be written as,
Average speed ∝ (1/time)
Now, if the constant of variation is introduced then the relationship can be written as,
Average speed = k(1/time)
Substituting the values, we will get,
[tex]73.3\frac{ feet}{second}= k \times \dfrac{1}{30\ seconds}\\\\73.3 \frac{ feet}{second}\times 30\ seconds = k\\\\k = 2,199\ feet[/tex]
Hence, the value of the constant of variation is 2,199 feet.
B.) The speed of the another rider is,
Average speed = k(1/time)
Average speed = 2,199×(1/25) feet/sec
Average speed = 87.96 feet/sec
Hence, the speed of another rider is 87.96 feet/sec.
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grace likes jeffery what will she do ?
Answer:
2,964
Step-by-step explanation:
52 x 57 = 2,964
help it’s due in an hour and I’m stuck
David bought a computer that was 20%
off the regular price of 1,080.if an 8%
sales tax was added to the cost of the
computer what was total price david
paid for it
Answer:
The total price David paid for the computer is $933.12
Step-by-step explanation:
The cost of the computer will be $1,080 with 20% off and 8% sales tax.
20% of 1080 is 1080(0.20)=216 this means 216 is 20% of 1080, so with the discount the price will be 1080-216=$864
Now we have to find 8% of 864.
864(0.08)=$69.12
So the total price will be 864+69.12= $933.12
please answer this for me
Answer:
600 + 161 = 761
Step-by-step explanation:
599 + 162 = 600 + 161 = 761
this is an escape room i can't escape
Answer:
The area of the rectangle is 180 units
Step-by-step explanation:
6 + 2 + 2 = 10
But the areas of each sectioned off shape are
Big rectangle = 180
Small rectangle = 48
2 by 8 triangles = each 8
3 by 8 triangles = each 12
Altogether, it's 268
Answer:
268 square yards
Step-by-step explanation:
small L rectangle 8 x 6 =48
two L triangles 2 * 1/2 * 2 * 8 = 16
Large rectangle 18 x 10 = 180
two R triangles 2 * 1/2 3 x 8 =24 Total = 268 yds^2
Geometry
7&8&9. Find the value of x.
Answer:
Step-by-step explanation:
What is the length of line segment b c? round to the nearest tenth. 14.3 in. 20.5 in. 21.3 in. 22.6 in.
The given figure is a triangle with 3 sides and angles. The length of BC as shown in the diagram is 20.5in
SOH CAH TOA identityThe given figure is a triangle with 3 sides and angles. In order to determine the length of BC, we will use the expression given:
cos 35 = a/25
where a = BC
cos 35 = BC/25
BC = 25cos 35
BC = 20.5in
Hence the length of BC as shown in the diagram is 20.5in
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6
7
2
5
The usual price of a TV set was $400. During Memorial Day weekend, the price was marked down to
$335. What was the percent decrease in the price of the TV set?
сл
Answer:
The answer is 65% is the percent decrease
Amanda measures the top of an 80 cm
desk to be 82.4 cm. Dwayne measures
the height of a 140 cm cabinet to be
a
137.2 cm. Which student has a greater
percent error?
Answer:
Amanda's percent of error: = .03 or 3% Dwyane's percent of error: = .02 = 2%
Looks like Amanda had the larger error.
Erin has four shirts (whites, blue, red, black) and two pairs of pants (black, blue). She randomly chooses a shirt and a pair of pants. what is the probability that they are the same color?
Answer:
25%
Step-by-step explanation:
find x and y…………….????????
Answer:
[tex]let \: \alpha \: be \: the \: 45 \\ \tan( \alpha ) = \frac{p}{b} \\ \tan(45) = \frac{x}{3 \sqrt{2} } \\ 1 = \frac{x}{3 \sqrt{2} } \\ x = 3 \sqrt{2} \\ by \: using \: pythagoras \: therom \\ {y}^{2} = {3 \sqrt{2} }^{2} + {3 \sqrt{2} }^{2} \\ {y}^{2} = 18 + 18 \\ y = \sqrt{36} \\ y = 6[/tex]
Step-by-step explanation:
hope this will help you
Write 0.030 in scientific notation
Please help :)
Can someone please answer my trigonometry problem? I've been trying to get answers all day for something so minimal.
Find each measurement indicated. Round your answers to the nearest tenth.
Answer:
∠B ≈ 30.0°
Step-by-step explanation:
The law of sines can be used to solve a triangle when two sides and an angle opposite one of them are given.
__
sin(B)/b = sin(C)/c
sin(B) = (b/c)sin(C) . . . . solve for sin(B)
sin(B) = (14/28)sin(91°) ≈ 0.49992385
The angle is found using the inverse sine function:
B = arcsin(0.49992384) ≈ 29.99496°
Rounded to tenths, the angle is ...
m∠B ≈ 30.0°
_____
Additional comments
Many triangle solver apps and web sites are available if all you want is an answer.
When using your calculator, be sure the angle mode is set to "degrees."
The Law of Sines can also be used to solve a triangle when two angles and one side are known.
A pole 3.8 m high casts a shadow that measures 1.3 m. A nearby tree casts a shadow 7.8 m long. Find the height of the tree.
Answer:
22.8 m
Step-by-step explanation:
the 2 situations are similar triangles
the ratio of corresponding sides are in proportion
let h be the height of the tree , then
[tex]\frac{h}{3.8}[/tex] = [tex]\frac{7.8}{1.3}[/tex] ( cross- multiply )
1.3h = 29.64 ( divide both sides by 1.3 )
h = 22.8 m
The equation y = kx represents a proportional relationship between x and y, where k is the constant of proportionality. For a moving object, the equation d = st represents a proportional relationship between distance (d) and speed (s) or between distance (d) and time (t). Explain the different ways that you can define the constant of proportionality for this equation.
Answer:
Hello!!!
In this specific case the constant of proportionality is s (speed).
Step-by-step explanation:
The constant of proportionality stay "constant" (as the name suggests) in a certain case.
meaning, the speed itself remains constant at any given distance or time.
You can use the constant of proportionality and either distance or time to find the missing varliable since it remains constant.
you can also switch up the formula:
d=st
t=d/s
s=d/t
i really hope this helps!!!!!
X=-3
A. 64
B. 8
C. 4
D. 16
Answer:
The answer is A.
Step-by-step explanation:
I took the test
A survey asked 200 Grade 4 students about their reading preferences. Based on Graph #1, about how many of them would you expect prefer comic books?
I aded the graph
Answer:
D. 80
Step-by-step explanation:
The graph shows that about 3/8 ( 37.5% ) of the students enjoy comic books.
200 × .375 = 75
75 rounded to the nearest tens value is 80
Where can i revise for my end of year maths assessment
Answer:
Huh??
where on brainly
Step-by-step explanation:
What is the volume of this cylinder?
Use ≈ 3.14 and round your answer to the nearest hundredth.
18 in
19 in
cubic inches
I
Answer:
V = 19329.14 cubic inches
Step-by-step explanation:
Volume of cylinder
[tex]V = \text{area of circle} \times \text{height}\\V = \pi r^2 \times h[/tex]
r ... radius of circle
h ... height of cylinder
Given information:
r = 18 in
h = 19 in
Now let's substitute the values in formula.
[tex]V = \pi r^2 \times h \\V = \pi (18)^2 \times 19\\V = 6156\pi\\V = 6156 \times 3.14\\V = 19329.84 \text{ in}^2[/tex]
can anyone tell me what angle Y is?
Answer:
Step-by-step explanation:
93 + y = 180
y = 180 - 93
y =87 Degrees
Answer:
87°
Explanation: The angles y and 93° are supplementary angles.
Therefore, subtract 93° from 180°, and voila! You got the answer.
Divide and write the quotient as a decimal
Answer:
0.16666666666667.
Step-by-step explanation:
what can Tiffany conclude from the data above?
A person who has only a high school diploma, they are most likely to have an income of less than $40,000.
What is probability?Its simple notion is that something will most likely occur. The favorable event's proportion to the overall number of occurrences.
The probability of a high school diploma person having less than $40,000 income will be
P(HSD) = 51/78
P(HSD) = 0.6538
The probability of a Bachelor's degree person having less than $40,000 income will be
P(BD) = 24/78
P(BD) = 0.3077
The probability of a master's degree person having less than $40,000 income will be
P(MD) = 3/78
P(MD) = 0.0385
A person who has only a high school diploma, they are most likely to have an income of less than $40,000.
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