The system of equations that describes the situation is given by these two following equations:
c = 10 + x.2c + 3x = 160.What is a system of equations?A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the variables are c and x.
Carlos has 10 more friends than Xavier when they start the competition, hence:
c = 10 + x.
Carlos doubles his amount of friends and Xavier triples his. In the end they have a total of 160 friends, hence:
2c + 3x = 160.
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Evaluate (2 minus 5 i) (p + q) (i) when p = 2 and q = 5 i.
29 i
29 i - 20
- 21 i
29
Answer:
29 i
Step-by-step explanation:
As the expression given in the question.
= (2 - 5i) (p + q)i
Simplify the above
= (2 - 5i) (pi + qi)
= 2pi + 2qi - 5pi²- 5qi²
As i² = -1
Put in the above
= 2pi + 2qi + 5p +5q
= 2i × 2 + 2i × 5i + 5 × 2 + 5 × 5i
= 4i + 10i² + 10 + 25i
As i² = -1
= 4i - 10 + 10 + 25i
= 29i
Thus the value of the (2 – 5i)(p + q)i is 29i .
A rectangular field has a perimeter of 300m. What is the area of the field if the length of the field is twice the width of the field
Answer:
5000 square meters
Step-by-step explanation:
Create a rectangle and use any variable to lable it.
I used c and I know that the length is twice the width, so I added "c" for both widths and "2c" for both lengths.
Count the number of c's up and you will get 6.
Divide 300/6 to get the value for c.
You get 50 for c, so plug it in for the length 2(50) or 100, and plug it in for the width or 1(50).
Now that you have the length and width of the triangle, use length times width to find the area.
100x50=5000
Please answer number 2. I don’t understand I’m very stressed right now I need help please.
Answer:
Smaller
Step-by-step explanation:
Because 7/8 is less than 1 and the sides are smaller which makes the volume smaller
:thumbsup:
what is 1/4x-6=-10 step by step please help me
Answer:
x = -16
Step-by-step explanation:
[tex]\frac{1}{4}x-6=-10 < ==add\ 6\ to\ both\ sides\\ \ \ \ \ \ \ \ \ +6 \ \ \ \ \ \ \ \ +6\\\\\frac{1}{4}x=-4 < ==multiply\ both\ sides\ by\ 4\\4(\frac{1}{4}x=-4)\\\\x=-16 < ==final\ answer[/tex]
Hope this helps!
Which of the following isatangent
Answer:
can you re word this i dont understand
What is the value of the expression (2^4)^2?
Answer:
256Explanation:
[tex]\dashrightarrow \sf \left(2^4\right)^2[/tex]
apply exponent rule: [tex]\bold{\left(a^b\right)^c=a^{bc}}[/tex]
[tex]\dashrightarrow \sf 2^{4*2}[/tex]
[tex]\dashrightarrow \sf 2^{8}[/tex]
[tex]\dashrightarrow \sf 256[/tex]
[tex]\large{\boxed{(\sf 2^{4})^2 \ \ = \ \ 256}[/tex]
SOMEONE PLEASE HELP ME WITH THIS!!
IMAGE DOWN BELOW!!
ILL GIVE YOU BRAINLIST ANSWER!!
Answer:
7.235 cm
Step-by-step explanation:
Pythagorean theory
A^2 + B^2 = C^2
A = 4.7
B = 5.5
4.7^2 + 5.5^2 = C^2
22.09 + 30.25 = C^2
√52.34 = √C^2
7.235 cm ≈ C
The area of the Atlantic Ocean is 2.9638 x 107 mi? . The area of the
Pacific Ocean is 6.0061 x 107 mi? How much greater is the area of the
Pacific Ocean than the area of the Atlantic Ocean?
A 3.0423 x 10° mi?
B 3.0423 x 104 mi?
C 3.0423 x 106 mi?
D 3.0423 x 10? mi?
Answer:
Answer not in the listed options....did you enter all of the info correctly ?
Step-by-step explanation:
6.0061 / 2.9638 = 2.026 times bigger
PLS HELP ITS ONLY 2 QUESTIONS
For number 6, Cylinder formula 3.14r^2*h (h=height)
For 5, pyramid formula 1/3b*h
5) base=33
Length=34
Height=21
6) pi=3.14
Radius=20
Height=31
Answer:
Cylinder: 3.14(20)^2*31
3.14(400)*31
1,256*31
becomes the answer 38,936!
Pyramid: 1/3(33)^2*21
1/3(1,089)*21
363*21
7,623!!!
The sum of two consecutive odd numbers is 28. Find their product
We will see that the first odd number is 13 and the second odd number is 15, the product is:
P = 13*15 = 195
How to find the two consecutive odd numbers?
Let's say that the first number is x, the next odd number will be x + 2.
The sum of these two odd numbers must be 2, then we need to solve the linear equation:
x + (x + 2) = 28
We can solve that for x:
2x + 2 = 28
2x = 28 - 2 = 26
x = 26/2 = 13
Then the first number is x = 13 and the second number is x + 2 = 13 + 2 = 15.
The product of these two numbers is:
13*15 = 195
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What is the distance between points (8,3) and (53,31) on a coordinate plane?
Answer:
53 units
Step-by-step explanation:
Let [tex](x_1,y_1)\rightarrow(8,3)[/tex] and [tex](x_2,y_2)\rightarrow(53,31)[/tex] to use the distance formula:
[tex]d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\\\d=\sqrt{(31-3)^2+(53-8)^2}\\\\d=\sqrt{(28)^2+(45)^2}\\\\d=\sqrt{784+2025}\\\\d=\sqrt{2809}\\\\d=53[/tex]
Thus, the distance between the two points is 53 units
Find the median, first quartile, third quartile, and interquartile range of the data.
84,75,90,87,99,91,85,88,76,92,94
median:
first quartile:
third quartile:
interquartile range:
am confused :/
Answer:
Median: 88, First Quartile: 84, Third Quartile: 92, IQR (interquartile range): 8
Step-by-step explanation:
1. Sort the numbers in numerical order (like 1, 2, 3, etc.)
2. Find the number that is in the middle
3. Find all the quartiles by finding the median of the lower and upper halves of the list
4. Subtract Q1 (quartile 1) and Q3 (quartile 3) like this: Q3 - Q1 to get IQR
HELP please! I need Help. Pre-calc. I'm not sure how to solve this. 50 Points! Please It will be appreciated.
An elliptical mirror has an eccentricity of 0.8. The mirror is surrounded by a 2-inch wide golden frame and is 34 inches tall including the frame. If a replacement mirror is being cut from a rectangular sheet of glass, what is the minimum dimensions needed for the sheet of glass?
Group of answer choices
A. 17 inches by 9 inches
B. 17 inches by 8 inches
C. 15 inches by 8 inches
D. 15 inches by 9 inches
[tex]\large{\mathcal{QUESTION:}}[/tex]
An elliptical mirror has an eccentricity of 0.8. The mirror is surrounded by a 2-inch wide golden frame and is 34 inches tall including the frame. If a replacement mirror is being cut from a rectangular sheet of glass, what is the minimum dimensions needed for the sheet of glass?
[tex]\large{\mathcal{ANSWER:}}[/tex]
B. 17 inches by 8 inches
The minimum dimensions needed for the sheet of glass are B. 17 inches by 8 inches
What is the area of the rectangle?The area of the rectangle is the product of the length and width of a given rectangle.
The area of the rectangle = length × Width
We are given that elliptical mirror has an eccentricity of 0.8.
Since the mirror is surrounded by a 2-inch wide golden frame and is 34 inches tall including the frame. If a replacement mirror is being cut from a rectangular sheet of glass,
We can conclude that the minimum dimensions needed for the sheet of glass could be;
17 inches by 8 inches
Learn more about the area;
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The first three and last terms of an arithmetic sequence are 7, 13, 19,..., 1357.
(a) Find the common difference.
Answer:
6
Step-by-step explanation:
common difference = (n + 1) - nth term = 13 - 7 =6
Answer:
subtract 6 every time
Step-by-step explanation:
you subtract first term from second term
cany anybody give me the awnser to this?
Have a look at the attached image.
A vase has 4 yellow flowers, 4 red flowers, and 8 blue flowers. Donna took a flower smelled it and put it back ,then took another flower and smelled it. What is the probability that the first flower was red and the second flower was blue?
Answer:
1/8
Step-by-step explanation:
Since the flower was replaced, these two drawings are independent events and the final probability is the product of the two individual probabilities.
total number of flowers: 16
yellow: 4
red: 4
blue: 8
p(red) = 4/16 = 1/4
p(blue) = 8/16 = 1/2
p(red then blue) = 1/4 × 1/2 = 1/8
Answer: 1/8
Can anybody help with Simple interests
Answer:
1.) $408.15 | 2.) $8,039.06 | 3.) 807,837.24 | 4.) $1,163.19
Step-by-step explanation:
1.) You need to know the exponential growth and decay formula.
The formula: y=ab^x
**For no.1**
Your initial amount is 300 which is the a
You need to do 100%+8% which is 108%
-This needs to be in decimal form: 1.08
4 years is the number of times the interests shall go up
Now do the equation:
y=300(1.08)^4 --> Multiply everything but do exponents first!!
y= $408.146688
$408.15 - This is the answer for no.1 it shall be rounded
**For no.2**
Same thing as last:
y=1500(1.75)^3
y= $8,039.0625
$8,039.06
**For no.3**
y=900(1.12)^60
y= 807,837.24
This had to be approximate
**For no.4**
y=820(1.06)^6
y= 1,163.1856
$1,163.19
Use substitution to solve the system.
Y=2x+11 5x+2y=-14
X=
y=
Answer:
x = -4, y = 3
Step-by-step explanation:
1. Substitute 2x + 11 for y:
5x + 2(2x + 11) = -14
2. Simplify:
2(2x) = 4x
4x + 5x = 9x, 2(11) = 22
so,
9x + 22 = -14
3. Isolate x:
9x + 22-22 = -14-22 = 9x -36
9x/9 = -36/9
x = -4
4. Plug in the value of x in to solve for y:
y = 2(-4) + 11
y = 3
hope this helps!
how do you recognize an exponential equation
if you come across an exponential equation you can recognize it if you see a small number above the base number it would look something like this.
Which is the largest ratio?
StartFraction 5 Over 36 EndFraction, 2:9, 3 to 18, 1:3
Answer:
Convert these ratios into fractions and then into their actual values.
(This is just one way of solving this, there are other plentiful ways you could use to solve this.)
2 : 9
Will become
2/9
Which will result in
0.222...
3 : 18
Will become
3/18
Which will result in
0.1666...
1 : 3
Will become
1/3
Which will result in
0.333...
Now, compare these numbers:-
0.222..., 0.1666..., and 0.333...
And out of these three numbers, 0.333... is by far the greatest number out of all of these ratios.
Therefore, the ratio 1:3 is the largest ratio.
Find the value of f(5) for the function.
f(x) = 6+3x
Answer: 21
Step-by-step explanation:
This means we can substitute x=5 into f(x), so f(5)=6+3(5)=21.
HELP!
The function f(x) = ax^2 + bx +c has an axis of symmetry of x = -3. The graph opens downwards and passes through the point (0,5). Write a possible equation for f(x).
Which of the following correctly shows the first step when factoring 3wx + 3wy - 4zx - 4zy by grouping? Please show explanations - also please do not ask any further question other than answering from what is questioned.
A) 3w(x + y) - 4z(x + y)
B) 3w(x + y) + 4z(x - y)
C) 3w(x + y) + 4z(x + y)
D) w(3x + 3y) - z(4x + 4y)
3w(x+y) - 4z(x+y)
Step-by-step explanation:
Hope it helps......
3w(x + y) + 4z(x - y) correctly shows the first step when factoring 3wx + 3wy - 4zx - 4zy by grouping. Option B
How to solve thisTo factor by grouping, we first pair up the terms and then check if there is a common factor in each pair.
The given expression is 3wx + 3wy - 4zx - 4zy
First, put the terms into pairs.
The simplified version of the expression (3wx + 3wy) - (4zx + 4zy) is 3wx + 3wy - 4zx - 4zy.
Next, separate and remove the terms that are the same from each group.
The expression 3w(x + y) - 4z(x + y) can be simplified to (3w - 4z)(x + y).
This is a summary:
In option B, we have correctly put the terms together in pairs and found the common factors in each group. In the first group, we take out 3w from 3wx and 3wy, and in the second group, we take out 4z from 4zx and 4zy. This means that the expression is correct when it is written as factors.
Learn more about factoring by grouping from
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Find the value of A) 3/5 multiplied by - 2/7, B) - 1/5+-1/3
A. -2/7
B. -8/15
hope it helps...!!!
Three moons are in the same circular orbit around a planet. The moons are each 98,000 kilometers from the surface of the planet, located at points A, B, and C. The planet is 12,000 kilometers in diameter and m∠ABC=90°. How far is point A from point C?
Answer:
The distance between points A and C is 275000 kilometers
given that ax60=b work out the value of 4b/a
Answer:
Given,
a x 60 = b
or
b = a x 60
Similarly, the value of a would be:
We need to find
Therefore, we have to put the either values of a and b in the specified equation:
Hence,
We have only put the value of one variable to evaluate or to make it variable free
or
Therefore, the value of 4b/a is 240.
Find the volumn of prism given figures
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the concept of surface areas and volumes.
To get the volume of the whole irregular shape, we have to divide it into two regular parts, find the individual volume and then add up them to getthe whole volume.
Here we divide it into two separate parts. so we get as,
after solving, we get total volume as 1140 cm^3
what is the exact volume as x? (attached image)
Answer:
x = 25
Step-by-step explanation:
The 45-45-90 triangle is a special isoceles right triangle. If you look at the help image attached, you will see that it has the following rules:
a = xb = xc = x√2Find x
c = x√2
25√2 = x√2
25√2 ÷ √2 = x
x = 25
I hope this helps!
what is this
please help
Answer:
The answers are the 2nd box, 4th box, and 5th box.
Compare learning about functions to learning a new language. How are they similar?
Answer:
Similarities
They both follow strict laws (typically stricter for math).
Practice makes perfect: both can be learned to points of practical perfection.
The brain must first attribute meaning or value to elements of either in order to build a learning pattern.
Differences:
Math is learned under assumptions of perfection (2 + 2 = 4 ALWAYS); whereas, language is learned under assumptions of reality (2 + 2 may be 5 for significantly larger values of 2). In other words, 2 average sized men plus 2 average sized Texans would more likely equal 5 or more average sized men.
Math is logical and language is largely artistic.
There is only one solution (or specific set of solutions) to every math problem. On the other hand, there are at least 100 different ways to express the same idea using language.
Step-by-step explanation:
Answer:
Language rules could be compared to syntax rules that govern the writing and scripting of a function. Language-based rules could be compared to syntax rules when writing functions, such that when the guiding syntax is correctly displayed, the function is clear and easy to read.