Answer:
A)−3(y + z = 4)
Step-by-step explanation:
Equation P: y + z = 4
Equation Q: 3y + 7z = 15
To eliminate the y term, The equations have to have the coefficients on y equal and opposite.
Equation Q has 3y, so Equation P needs -3y
Multiply equation P by -3
−3(y + z = 4)
Answer:
A
Step-by-step explanation:
need help asap!!! plzz
Use mental math to find 31% of $200.
(A)$52.00
(B)$42.00
(C)$62.00
(D)$72.00
Answer:
(C)$62.00
Step-by-step explanation:
$200 x .31 = $62.00
the answer is C it is $62.00
A number is chosen at random from the positive, even integers from 2 to 50. Find the probability that the number chosen is divisible by 3 or 8
Answer:
2/5
Step-by-step explanation:
it is 2/5
Probability = 12/25 or 48%.
To find the probability that a number chosen at random from the positive, even integers from 2 to 50 is divisible by 3 or 8, we need to count the number of even integers within this range that are divisible by 3 or 8, and then divide this count by the total number of even integers in the range.
First, let's find how many even integers between 2 and 50 are divisible by 3.
The even integers divisible by 3 in this range are: 6, 12, 18, 24, 30, 36, 42, 48.
Count: 8
Now, let's find how many even integers between 2 and 50 are divisible by 8.
The even integers divisible by 8 in this range are: 8, 16, 24, 32, 40, 48.
Count: 6
Notice that 24 and 48 are counted twice because they are divisible by both 3 and 8. We only want to count them once.
So, the total count of even integers between 2 and 50 that are divisible by 3 or 8 is 8 (from being divisible by 3) + 6 (from being divisible by 8) - 2 (counting 24 and 48 once) = 12.
Now, we calculate the total number of even integers between 2 and 50:
Total even integers between 2 and 50 = (50 - 2) / 2 + 1 = 25
Now, we can calculate the probability:
Probability = (Number of favorable outcomes) / (Total number of outcomes)
= 12 / 25
= 0.48
So, the probability that a number chosen at random from the positive, even integers from 2 to 50 is divisible by 3 or 8 is 0.48.
PLEASE HELP ME!!! THIS IS DUE IN LIKE 10 MINS!!!! PLEASE DO IT FAST!!
Answer:
false
Step-by-step explanation:
because it doesn’t have the three complete angles
Answer:
False
Step-by-step explanation:
How many yards are in 1 mile?
1,760
2,640
52.8
15,840
Answer:
1,760
Step-by-step explanation:
A mile is 5280 feet
3 feet in a yard
so 5280/3=1760
your answer is A) 1,760 yards
If 30 people claimed that they get an average of seven hours of sleep, how many people claimed that they get at least eight hours of sleep each night? [Type your answer as a number.]
60 people claimed they they got at least eight hours of sleep.
Answer:
78 people claimed that they get at least eight hours of sleep each night.Step-by-step explanation:
We know that 30 people claimed that they get an average of seven hours of sleep. Using the circular diagram, we find that these 30 people represent 25% of the total number of people.
According to the graph, people that get at least eight hours of sleep each night represent 65%, that is, 50% of the people sleep eight hours and 15% sleep nine or more.
Then, we use the rule of three, if 30 people represent 25% of the total, how many people would represents 65%?
[tex]x=65\%\frac{30 \ people}{25 \%} = 78 \ people[/tex]
Therefore, 78 people claimed that they get at least eight hours of sleep each night.
show that 1/12 of the carpet is covered by the rug (photo provided)
the carpet is rectangular, thus its area is simply the product of its two dimensions, namely 8*6 = 48 m².
how much is the shaded area? well, since it's also rectangular, its area is also that product of 2*2 = 4, recal is a square so length = width = 2.
[tex]\bf \stackrel{\textit{how many times does 48 go into 4?}}{\cfrac{shaded}{total~area}\qquad \cfrac{4}{48}\implies \stackrel{simplified}{\cfrac{1}{12}}}[/tex]
Find the surface area and volume of a cube with sides that are 3 inches
Answer:
A=54in²
Step-by-step explanation:
To calculate the unit price of an item, divide the total number of units by the total price.
Please select the best answer from the choices provided
T
F
Answer:
F
Step-by-step explanation:
Pls help with this
Just do you ones you know
Answer:
Number 7 is 40
Step-by-step explanation:
set up a proportion 5/1 = x/8 cross multiply a divide and you get 40
How do show 4/6 and 5/7 on a number line
Answer:
|-----|-----|-----|-----0-----|-----| |------|------|------|------|------0------|-----|
0 1/6 2/6 3/6 4/6 5/6 1 0 1/7 2/7 3/7 4/7 5/7 6/7 1
Step-by-step explanation:
since 4/6 means the fourth one of the 6 spots, we can just make a number line that is split into 6 parts and find the fourth line. we do the same thing with seven to get the answers above
Final answer:
To show 4/6 and 5/7 on a number line, mark 42 equal sections between 0 and 1, and place 4/6 at the 28th mark and 5/7 at the 30th mark, as they equate to 28/42 and 30/42 respectively.
Explanation:
To show 4/6 and 5/7 on a number line, you would follow these steps:
Determine a number line with a section that includes both fractions. This might typically be between 0 and 1 if you are only dealing with fractions less than a whole.Divide this section into parts that can accommodate both denominators. For example, a common denominator for 6 and 7 is 42, since 6 * 7 = 42.Mark off 42 equal sections between 0 and 1 on your number line.Count and mark the position that corresponds to 4/6 and 5/7. To find the position of 4/6, you would count 28 sections from 0 (since 4/6 = 28/42). For 5/7, you would count 30 sections from 0 (since 5/7 = 30/42).Place a point or tick mark at these positions and label them accordingly.Both 4/6 and 5/7 will be placed between 0 and 1 on the number line, with 4/6 slightly to the left of 5/7.
Find the equation of a circle with a center at (7,2) and a point on the circle at (-2,-5).
( x - 7 )^2 + ( y - 2 )^2 = sqrt 130
( x + 7 )^2 - ( y + 2 )^2 = sqrt 130
( x - 7 )^2 + ( y - 2 )^2 = 130
( x + 7 )^2 - ( y + 2 )^2 = 130
Answer:
(x - 7)² + (y - 2)² = 130
Step-by-step explanation:
The first step is finding the length of the radius.
r² = (2 - -5)² + (7 - -2)²
= 7² + 9²
= 49 + 81
= 130
The general equation of a circle is:
(x - a)² + (y - b)² = r²
Where (a, b) is the coordinate of the center and r is the radius.
∴ The equation of the required circle is;
(x - 7)² + (y - 2)² = 130
A 10-mile bike race is divide into 4 equal sections
Answer:
each section will equal 2.5 miles
Step-by-step explanation:
if you divide 10 from 4 you get 2.5
To divide a 10-mile bike race into four equal sections, we calculate the length of one section by dividing 10 miles by 4, resulting in each section being 2.5 miles long.
The question pertains to the division of a 10-mile bike race into four equal sections. To find the length of each section, we divide the total distance of the race (10 miles) by the number of sections (4). This calculation will give us the length of one section.
10 miles \ 4 sections = 2.5 miles per section.
Thus, each section of the bike race would be 2.5 miles long. This application of division in real-world situations like races and marathons is a fundamental concept in mathematics, allowing participants and organizers to understand and manage distances more effectively.
What is the value of x?
x =
(Secants, Tangents, and Angles)
Answer:
The value of x is [tex]58\°[/tex]
Step-by-step explanation:
we know that
The measurement of the external angle is the semi-difference of the arcs which comprises
so
In this problem
[tex]51\°=\frac{1}{2}(160\°-x\°)[/tex]
solve for x
[tex]102\°=(160\°-x\°)[/tex]
[tex]x=160\°-102\°=58\°[/tex]
You roll a fair 6 sided die what is p (roll greater than 4)
Answer:
[tex]\frac{1}{3}[/tex]
Step-by-step explanation:
Probability is measured as
[tex]\frac{favourableoutcome}{count}[/tex]
The favourable outcome is obtaining roll > 4, that is a 5 or 6
P( > 4 ) = [tex]\frac{2}{6}[/tex] = [tex]\frac{1}{3}[/tex]
Could I help some help on numbers 2,6,10,30, and 38 please
Answer:
#6. 36 #30. 24
Step-by-step explanation:
6. You add 7+29=36 so 36 is the missing number
HELP ASSAP WILL MARK BRAINIEST!!!!!!!!
Choose the solution to this inequality. 7/2≥b+9/5
The solution to the given inequality is [tex]b\leq 1.7[/tex]
InequalitiesFrom the question, we to determine the solution to the inequality.
To determine the solution of the inequality, we will determine the value of the variable. The variable in the given question is b.
The inequality can be solved as shown below.
[tex]\frac{7}{2} \geq b + \frac{9}{5}[/tex]
Multiply through by 10
That is,
[tex]10 \times \frac{7}{2} \geq 10\times b + 10\times \frac{9}{5}[/tex]
This becomes
[tex]5 \times 7 \geq 10b + 2 \times 9[/tex]
[tex]35 \geq 10b + 18[/tex]
Now, subtract 18 from both sides
[tex]35 - 18\geq 10b + 18-18[/tex]
[tex]17 \geq 10b[/tex]
This becomes,
[tex]10b \leq 17[/tex]
Divide both sides by 10
[tex]\frac{10b}{10} \leq \frac{17}{10}[/tex]
[tex]b\leq 1\frac{7}{10}[/tex]
OR
[tex]b\leq 1.7[/tex]
Hence, the solution to the given inequality is [tex]b\leq 1.7[/tex]
Learn more on Inequalities here: https://brainly.com/question/24372553
you stop for lunch at a local pizza ahop where each pizza is cut into 8 sices. would your hunger be better satisifued with one slice from a 10 inch pizza or 2 slices from a 8 inch pizza and explain why?
Answer:
Hello there! How are you doing? I am doing fine! I'll answer the question now.
So basically, your hunger would be satisfied with the 2 slices of 8 inches, because although one slice of 8 inches is two inches less than the 10 inch slice. But then you could add another 8 inch slice and it would make it greater and bigger than the one 10 inch slice itself. So in conclusion, the 2, 8 inch slices would be better than the 1, 10 inch slice because 16 inches is greater than 10 inches.
Hope this helped! Your welcome! I can help with other history stuff too! And byee! :)
Step-by-step explanation:
Two slices from an 8-inch pizza provide more pizza than one slice from a 10-inch pizza based on the calculation of the areas of the pizza slices. Therefore, your hunger would be better satisfied with the two pieces from the 8-inch pizza.
Explanation:The subject here is a mathematical comparison of the area of different pizza sizes and the number of slices eaten. The location of a pizza can be calculated using the formula for the circle size, which is πr², where r is the radius of the pizza.
In the case of a 10-inch pizza, the radius is 5 inches (half of the diameter). So the area is π(5)² = 78.5 square inches. One slice of this pizza would be 1/8th of the total area, approximately 9.81 square inches.
For an 8-inch pizza, the radius is 4 inches. So the area is π(4)² = 50.24 square inches. Two slices of this pizza would amount to 1/4th of the total area, approximately 12.56 square inches.
So, when it comes to fulfilling your hunger at lunch, two slices of an 8-inch pizza would be more satisfying as it offers more pizza than one slice of a 10-inch pizza.
Learn more about pizza slices here:https://brainly.com/question/29280924
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Rewrite in polar form x^2 + y^2 - 6y - 8 = 0
Answer:
The correct answer option is [tex]r^2-6rsin(\theta)=8[/tex].
Step-by-step explanation:
We are given the following equation and we are to rewrite it in polar form:
[tex]x^2 + y^2 - 6y - 8 = 0[/tex]
[tex]\left \{ {{x^2+y^2=r^2} \atop {y=rsin \theta}} \right.[/tex]
Here, we need to make a perfect square trinomial:
[tex][r^2-6rsin(\theta)+[/tex] ___[tex]^2]=8[/tex]
[tex]6rsin(\theta)[/tex] ---> [tex]2 .r.3.sin \theta[/tex]
Completing the square to get:
[tex]r^2-6rsin(\theta)+[3sin(\theta)]^2-[3sin(\theta)]^2=8[/tex]
[tex][r-3sin(\theta)]^2=8+[3sin(\theta)]^2[/tex] --> [tex][r-3sin(\theta)]^2=8+9sin^2(\theta)[/tex]
[tex]r-3sin(\theta)=\sqrt{8+9sin^2(\theta)}[/tex] --> [tex]r=\sqrt{8+9sin^2(\theta)} +3sin(\theta)[/tex]
the correct answer is B. r^2=6r sin 0+8
Which factorization can be used to identify the real zeros of the function f(x)=-20x^2+23x-6?
Answer:
see explanation
Step-by-step explanation:
Given f(x) = - 20x² + 23x - 6
To find the zeros set f(x) = 0, that is
- 20x² + 23x - 6 = 0 ( multiply through by - 1 )
20x² - 23x + 6 = 0
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term
product = 20 × 6 = 120 and sum = - 23
The factors are - 15 and - 8
Use these factors to split the x- term
20x² - 15x - 8x + 6 = 0 ( factor the first/second and third/fourth terms )
5x(4x - 3) - 2(4x - 3) = 0 ← factor out (4x - 3)
(4x - 3)(5x - 2) = 0
Equate each factor to zero and solve for x
4x - 3 = 0 ⇒ 4x = 3 ⇒ x = [tex]\frac{3}{4}[/tex]
5x - 2 = 0 ⇒ 5x = 2 ⇒ x = [tex]\frac{2}{5}[/tex]
Answer:
-(4x - 3)(5x - 2) = 0
Step-by-step explanation:
You and a friend join a gym The registration fee is $30 and the monthly Membership is $20 if the total bill for you and your friend is $420 how many months did you pay for?
Tina had $145 she spent $40 on fruit at the farmers market how to Slovenia the equation 40 + c = 145 to find the amount Tina has left
To help u out
Change equation to 145-40=
Subtract.
Replace c with 105 so; 40+105=145
Which phrase BEST describes the expression below? 15.4 − 2 n
A.twice a number n minus fifteen and four-tenths
B.twice a number n subtracted from fifteen and four-tenths
C.a number n minus the product of fifteen and four-tenths and two
D.a number n times the difference between fifteen and four-tenths and two
B is the answer hope this helps!
B) is the answer, my reasoning is that A) is 2n - 15 and four tenths which is the wrong way around , C) is just nonsense and D) is n multiplied by 15 and four tenths take away 2 which is also wrong , as that would be n x 13 and four tenths , hope this helps :)
A fisherman travels 8 miles downstream with the current in the same time that he travels 3 miles upstream against the current. If the speed of the current was 5 mph what is the speed at which the fisherman travels in still water?
I also need help with this too so I'm just here to wait and see the answer
The speed is the distance covered by an object at a particular time. The speed at which the fisherman travels in still water is 11 mph.
What is speed?The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.
[tex]\rm{Speed = \dfrac{Distance}{Time}[/tex]
Let the speed of the boat be represented by x mph.
A fisherman travels 8 miles downstream with the current at the same time that he travels 3 miles upstream against the current. Also, the speed of the current was 5 mph. Therefore,
8 miles/ (x + 5)mph = 3 miles/(x - 5) mph
8x - 40 = 3x + 15
5x = 55
x = 11 mph
Learn more about Speed:
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A cube labeled 1 to 6, is tossed 6 times
and lands on the number 5 twice.
Find the probability of the cube landing on the number 5.
Answer:
1/6
Step-by-step explanation:
If we're assuming that this is a six-sided die, then we can find that the results can be 1,2,3,4,5,6. Only 1 of those 6 numbers are 5, so the probability of the cube landing on 5 would be 1/6.
MARKING BRAINLIEST
On Thursday night, Betsy received $34.50 in tips working as a coat checker. This is $1.75 more than the amount in tips she received on Wednesday night. How much did she receive on Wednesday night?
Select the figure obtained when rotating the figure about an axis along its largest side, and find the exact surface area of the resulting figure.
A rectangle with length 22 and width 18.
The figure obtained is a (square/cylinder/sphere)
The exact surface area is ______π.
Answer:
The figure obtained is a cylinder
The exact surface area is 1440π.
Step-by-step explanation:
* Lets study the rotation of a rectangle around one of its sides
- If the dimensions of the rectangle are length (L) and width (W)
- If we rotate the rectangle around its length (L), we will construct
a cylinder with radius = W and height = L
- If we rotate the rectangle around its width (w), we will construct
a cylinder with radius = L and height = W
∵ The surface area of any cylinder =
perimeter of base × height + 2 base area
∵ The base is a circle
∴ perimeter base = 2πr and base area = πr²
∴ The surface area = 2πrh + 2πr²
* In first case:
- Surface area = 2π(W)L + 2π(w)² = 2πWL + 2πW²
* In second case:
- Surface area = 2π(L)W + 2π(L)² = 2πLW + 2πL²
* Now lats check our question:
∵ L = 22 and W = 18
- It will rotate around the largest side
∴ It will rotate around L
∴ The figure obtained is a cylinder
* From the explanation above this is the first case
∵ L = 22 and W = 18
∵ The surface area = 2πWL + 2πW²
∴ The surface area = 2 × 18 × 22 × π + 2 × (18)² × π
= 792π + 648π = 1440π
* The exact surface area is 1440π.
Plz help!!!!!!!!!!!!
Answer:
rational
Step-by-step explanation:
any number that can be written as a fraction is rational, it is also a termintating decimal.
Answer: rational
Step-by-step explanation:
[tex]\dfrac{1}{4}=0.25\\\\\text{Since the decimal terminates (ends), it is a rational number.}[/tex]
What is 71 X 9? WITH work.
Answer:
639
Step-by-step explanation:
put the 71 on the top then the 9 on the bottom then 9x1=9 then 9x7=63
639!
ASAP!!!!!
The sanitation department calculated that last year each city resident produced approximately 1.643 × 10^3 pounds of garbage. There are 2.61 × 10^5 people living in the city. How much garbage did the city sanitation department collect last year?
4.2882 pounds
428.820 pounds
428,820 pounds
428,820,000 pounds
Answer:
428,820,000 pounds
Step-by-step explanation:
The amount of garbage is number of person times the amount produced by each person. Thus, we have:
Amount of Garbage (in pounds) = 2.61 × 10^5 * 1.643 × 10^3
Note: We multiply 2.61 and 1.643, which is 4.28823 & multiplying 10^5 and 10^3 is 10^(5+3) = 10^8
Thus, we have 4.28823 * 10^8 = 428,823,000 pounds
This is approximately 428,820,000 pounds, last answer choice.
Answer:
Other answer is correct, confirmed on E2020
Step-by-step explanation: