Answer:
i think it’s D
i hope i help you but if nop DO NOT FORGET STAY SAFE AT HOME
List three examples of words/phrases that describe the mathematical operation of addition. (Example "Increased by") *
Answer:
Increased by, added, brought up (All I know of haha)
Step-by-step explanation:
Theres really no explanation to this other than learning your mathematical terms.
△ abc is an equilateral triangle, bc must be 2 cm True or False
The length of a rectangular table is 3 times its width. If the total perimeter of the table is 36 meters. What is the length and the width of the table?
Answer:
Length = 13.5 m
Width = 4.5 m.
Step-by-step explanation:
Use an equation in x, where x = width of the table.
Length = 3x, so:
2*3x + 2x = 36
6x + 2x = 36
8x = 36
x = 36/8 = 4.5 metres.
So the length = 3*4.5 = 13.5 and width = 4.5 m.
Length = 13.5 m
Width = 4.5 m.
What is the perimeter?A closed route that covers, encircles, or outlines a one-dimensional length or a two-dimensional form is called a perimeter.
Given, The length of a rectangular table is 3 times its width. If the total perimeter of the table is 36 meters.
Use an equation in B, where B = width of the table.
Length = 3B,
2*3B + 2B = 36
6B + 2B = 36
8B = 36
B = 36/8 = 4.5 meters.
So the length = 3*4.5 = 13.5 and width = 4.5 m.
Therefore, the length and the width of the given rectangle are 4.5 and 13.5 respectively.
Learn more about perimeter here:
https://brainly.com/question/9369181
#SPJ2
a square has an area of 1 square unit what is the length of the square
Answer:
The length is one
Step-by-step explanation:
The formula to find the area of aa square is B*H. This means to solve, you do 1*1, since the base and height are both 1, and 1*1=1
A rug shaped like a rectangle is 2.5 meters long and 1.8 meters wide what is the perimeter in meters of the rug
Answer:
P = 8.6 m
Step-by-step explanation:
Given that,
The length of a rectangle = 2.5 m
The width of a rectangle = 1.8 m
We need to find the perimeter of the rug. The perimeter of a rectangle is given by :
P=2(l+b)
= 2(2.5+1.8)
= 8.6 m
So, the perimeter of the rug is 8.6 m.
PLS HELP ME Find a sum equivalent to the product shown. 5(x+z)
No answers just trollling will be reported
Answer:
20
Step-by-step explanation:
Two pencils and one pen cost $0.80, and one pencil and two pens cost $1.15. How many cents would three pencils cost
Answer:
.33 cents
Step-by-step explanation:
Please help me i will give a Brainly and 100 points
Answer:
Part a) The graph in the attached figure
Part b) The units rate of change is 9
Step-by-step explanation:
we know that
A relationship between two variables, t, and d, represent a proportional variation if it can be expressed in the form or
step 1
Find the constant of proportionality k
For
substitute
the linear equation is equal to
using a graphing tool
see the attached figure
step 2
Find the unit rate
we know that
In a proportional relationship the constant of proportionality k is equal to the unit rate of change or slope m of the line, because the line passes through the origin
so
The units rate of change is 9
That means------> A change of 1 unit in t correspond to a change of 9 units in d
see the attached figure to better understand the problem
Answer:
Have a nice day! Answer is above good luck:)
The width of a rectangle is 7 inches less than the length. The perimeter is 62 inches. Find the length and the width.
Answer: Perimeter = 2(L) + 2(W) Length = 7W - 2 Perimeter = 60 60 = 14W - 4 + 2(W) 60 =16W - 4 64 = 16W Width = 4 Length = 7(4) - 2 Length = 26
I hope this helped!
Step-by-step explanation:
Timothy purchased a computer for $1,000.
The value of the computer depreciates by 20% every year.
This situation represents [a.) exponential decay, b.) exponential growth]
The rate of growth or decay, r, is equal to [c.) 0.8, d.) 1.2, e.)0.2
year.
So the value of the computer each year is [f.) 20 %, g.) 80%, h.) 120%] of the value in the previous year.
It will take [i.) 3, j.) 2, k.) 4, l.) 5.] years for the value of the computer to reach $512.
Answer:
This situation represents [a.) exponential decay
The rate of growth or decay, r, is equal to c.) 0.2
So the value of the computer each year is g.) 80% of the value in the previous year.
It will take [i.) 3 years for the value of the computer to reach $512.
Step-by-step explanation:
Since the value depreciates each year, it represents exponential decay.
The rate of growth or decay, r, is equal to
Depreciates 20%, so r = 0.2.
So the value of the computer each year is ... of the value in the previous year,
Depreciates 20%, so it is 100% - 20% = 80% of the value in the previous year.
It will take x years for the value of the computer to reach $512.
The value of the computer after x years is given by:
[tex]V(x) = V(0)(1-r)^x[/tex]
In which V(0) is the initial value and r is the decay rate. So
[tex]V(x) = 1000(1-0.2)^x[/tex]
[tex]V(x) = 1000(0.8)^x[/tex]
We want to find x for which V(x) = 512. So
[tex]V(x) = 1000(0.8)^x[/tex]
[tex]512 = 1000(0.8)^x[/tex]
[tex](0.8)^x = \frac{512}{1000}[/tex]
[tex](0.8)^x = (0.512)[/tex]
Applying log to both sides:
[tex]\log{(0.8)^x} = \log{(0.512)}[/tex]
[tex]x\log{0.8} = \log{(0.512)}[/tex]
[tex]x = \frac{\log{0.512}}{\log{0.8}}[/tex]
[tex]x = 3[/tex]
So it will take 3 years.
mams buy 3 large sandwiches to serve at a picnic. 9 people come to the picnic. Show 3 different ways to cut the sandwich so that each person gets an equal share.
Cut each sandwich into thirds.
Hopefully, your friends aren't very hungry
A laundromat charges $1.50 to wash and $1.25 to draw a load of laundry.
Choose all of the points that would lie on a graph representing the total cost, y, to wash and dry x loads of laundry:
A. (2, 2.75)
B. (2, 5.50)
C. (3, 6.75)
D. (3, 9.75)
E. (4, 10.25)
F. (4, 11.00)
Answer:
High possibility it is A, C, D. I apologize if wrong
Step-by-step explanation:
Answer:B, C, E
Step-by-step explanation:
What is the sum of
1
8
+
5
16
+
3
8
?
Answer:
41
Step-by-step explanation:
Answer:
18+516+38=18+554=572
The graph of the linear function is shown on the grid .What is the slope of the line ?.
A) -10
B) -3/2
C) -2/3
D) 2
can someone explain to me what it means to be marked as branliest? & what it does ?
Honestly, for me, it just provides bragging rights. Also, I guess it makes you feel better about getting your rank higher. (~ ̄▽ ̄)~
____________________________________________________________
正直なところ、私にとって、それは自慢する権利を提供するだけです。また、ランクを上げることで気分が良くなると思います。(~ ̄▽ ̄)~
10g of Copper reacts with 5g of Sulfur
Write the ratio of Copper to Sulphur
please help meeeeeeeeeee
Answer:
area of trapezoid is [tex]\mathbf{Area=(\frac{4+8}{2})\times 6}[/tex]
Step-by-step explanation:
We have
a = 4 cm
b = 8cm
h = 6cm
We need to find area of trapezoid
The formula used is: [tex]Area=\frac{a+b}{2}\:h[/tex]
Putting values and finding expression:
We will not be solving the expression as question required just to find the expression by putting respective values.
[tex]Area=\frac{a+b}{2}\:h\\Area=(\frac{4+8}{2})\:\times 6[/tex]
So, area of trapezoid is [tex]\mathbf{Area=(\frac{4+8}{2})\times 6}[/tex]
A bacterial culture is known to grow at a rate proportional to the amount present. After one hour, there are 1000 strands of bacteria and after four hours, 3000 strands. Find an expression for the number of strands present in the culture at any time t. What is the initial number of strands
Answer:
The expression is: [tex]P(t) = 693e^{0.3662t}[/tex]
The initial number of strands is 693
Step-by-step explanation:
A bacterial culture is known to grow at a rate proportional to the amount present.
This means that the bacterial model can be modeled by the following equation:
[tex]P(t) = P(0)e^{rt}[/tex]
In which P(0) is the initial population, and r is the growth rate.
After one hour, there are 1000 strands of bacteria
This means that [tex]P(1) = 1000[/tex], So
[tex]P(0)e^{r} = 1000[/tex]
[tex]P(0) = \frac{1000}{e^{r}}[/tex]
After four hours, 3000 strands.
This means that P(4) = 3000. So
[tex]P(0)e^{4r} = 3000[/tex]
Since [tex]P(0) = \frac{1000}{e^{r}}[/tex], we have that:
[tex]\frac{1000}{e^{r}}e^{4r} = 3000[/tex]
[tex]\frac{e^{4r}}{e^{r}} = \frac{3000}{1000}[/tex]
[tex]e^{4r-r} = 3[/tex]
[tex]e^{3r} = 3[/tex]
[tex]\ln{e^{3r}} = \ln{3}[/tex]
[tex]3r = \ln{3}[/tex]
[tex]r = \frac{\ln{3}}{3}[/tex]
[tex]r = 0.3662[/tex]
The initial population is:
[tex]P(0) = \frac{1000}{e^{0.3662}} = 693[/tex]
The expression is:
[tex]P(t) = 693e^{0.3662t}[/tex]
The equation becomes [tex]y=694(1.44)^t[/tex]. The initial number of strands is 694.
An exponential growth is in the form:
y = abˣ
where y, x are variables, a is the initial value of y and b is the multiplier.
Let y represent the number of strands after t hours.
After one hour, there are 1000 strands of bacteria:
1000 = ab¹
ab = 1000 (1)
After four hour, there are 3000 strands of bacteria:
3000 = ab⁴
ab⁴ = 3000 (2)
Dividing equation 2 by 1:
b³ = 3
b = 1.44
ab = 1000
a = 1000/b = 1000/1.44 = 694
The equation becomes [tex]y=694(1.44)^t[/tex]
Find out more at: https://brainly.com/question/12490064
PLEASE HELP YOU WILL GET BRAINLIEST IF YOU GET THIS RIGHT FIRST
HURRYYYYYY I’LL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST CORRECTLY
i already wasted all my points on questions nobody answered if someone answers this CORRECTLY you’re the best person ever
The function below has at least one rational zero. Use this fact to find ALL zeros of the function.
g(x)=5x^3+x^2-20^x-4
If there is more than one zero, separate them with commas. Write exact values, not decimal approximations.
Answer: 4 zeros
Step-by-step explanation:
If you want to use the Rational Zeros Theorem, as instructed, you need to use synthetic division to find zeros until you get a quadratic remainder.
P: ±1, ±2, ±3, ±6 (all prime factors of constant term)
Q: ±1, ±7 (all prime factors of the leading coefficient)
P/Q: ±1, ±2, ±3, ±6, ±1/7, ±2/7, ±3/7, ±6/7 (all possible values of P/Q)
Now, start testing your values of P/Q in your polynomial:
f(x)=7x4-9x3-41x2+13x+6
You can tell f(1) and f(-1) are not zeros since they're not = 0Now try f(2) and f(-2):
f(2)=7(16)-9(8)-41(4)+13(2)+6
112-72-164+26+6 ≠ 0
f(-2)=7(16)-9(-8)-41(4)+13(-2)+6
112+72-164-26+6 = 0 OK!! There is a zero at x=-2
This means (x+2) is a factor of the polynomial.
Now, do synthetic division to find the polynomial that results from
(7x4-9x3-41x2+13x+6)÷(x+2):
-2⊥ 7 -9 -41 13 6
-14 46 -10 -6
7 -23 5 3 0 The remainder is 0, as expected
The quotient is a polynomial of degree 3:
7x3-23x2+5x+3
Now, continue testing the P/Q values with this new polynomial. Try f(3):
f(3)=7(27)-23(9)+5(3)+3
189-207+15+3 = 0 OK!! we found another zero at x=3
Now, another synthetic division:
3⊥ 7 -23 5 3
21 -6 -3_
7 -2 -1 0
The quotient is a quadratic polynomial:
7x2-2x-1 This is not factorable, you need to apply the quadratic formula to find the 3rd and 4th zeros:
x= (1±2√2)÷7
The polynomial has 4 zeros at x=-2, 3, (1±2√2)÷7
Think you can answer this?
John needs to purchase a table for his room. John measured the space available as 4 ft. the actual measurement was 2.5 ft. what is John percent error.
Answer:
62.5%
Convert fraction (ratio) 2.5 / 4 Answer: 62.5%
Step-by-step explanation:
Creating a ratio to represent the amount he was specifically off by, which inherently gives you John's percent error.
PLEASE HELL I NEED THIS ONE FAST PLEASE
Which statement is true about the decimal expansion of ? 3/7
O A. It is a rational number because it is a terminating decimal.
○B. It is an irrational number because it is not a terminating decimal.
○C. It is a rational number because after reaching a remainder of 3 for the second time the quotient will start repeating.
O D. It is an irrational number because after reaching a remainder of 3 for the second time the quotient will start repeating.
Answer:
A is the answer because divide 7 divided by 3 a
Shonna is reading a 528 page book she reads 22 pages every day how many days will it take Shana to read the entire booK
Select the correct answer.
The branch manager of a clothing store is analyzing the average total bill of sale for his location. The national manager has communicated that
the overall population mean is $45.90 with a standard deviation of $10.3.1. The branch manager has a sample of 400 total bills of sale for his
location. By the central limit theorem, which interval can the branch manager be 95% certain that the sample mean will fall within?
Answer:
We can be 95% certain that the sample mean will fall within $44.87 and $46.93
Step-by-step explanation:
Empirical Rule:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
Central Limit Theorem:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Population:
Mean $45.90, standard deviation $10.31.
Sample:
By the Central limit theorem, mean $45.90, standard deviation [tex]s = \frac{10.31}{\sqrt{400}} = \frac{10.31}{20} = 0.5155[/tex]
Which interval can the branch manager be 95% certain that the sample mean will fall within?
By the Empirical Rule, within 2 standard deviations of the mean. So
45.90 - 2*0.5155 = $44.87
45.90 + 2*0.5155 = $46.93
We can be 95% certain that the sample mean will fall within $44.87 and $46.93
Which statement has a false converse?
A If a quadrilateral is a rectangle, then the diagonals of the quadrilateral are
congruent.
B If a quadrilateral has diagonals that bisect each other, then the quadrilateral is a
parallelogram
C if a quadrilateral is a rectangle, then all angles of the quadrilateral are right angles.
D If a quadrilateral is a parallelogram, then both pairs of opposite sides of the
quadrilateral are congruent.
Answer:
B If a quadrilateral has diagonals that bisect each other, then the quadrilateral is a parallelogram
Explanation:
A rectangle just like a square has diagonals that bisect each other and they are congruent( two lines are congruent if they are equal). A parallelogram is a quadrilateral with parallel sides and when its diagonals intersect, they are congruent too. Therefore a rectangle with diagonals that bisect each other is not necessarily a parallelogram.
Helpp
(Show ur work please)
This is law of cosine
Answer:
13.3
Step-by-step explanation:
[tex] a^2 = b^2 + c^2 - 2bc \cos A [/tex]
[tex] a^2 = 8^2 + 18^2 - 2(8)(18) \cos 43^\circ [/tex]
[tex] a^2 = 64 + 324 - 288(0.73135) [/tex]
[tex] a^2 = 388 - 210.6299 [/tex]
[tex] a^2 = 177.370 [/tex]
[tex] a = \sqrt{177.370} [/tex]
[tex] a = 13.318 [/tex]
Answer: 13.3
< 1 2 The circumference of a circle is 47.1 feet. What is the diameter of the circle?
Step-by-step explanation:
[tex]47.1 = 2\pi \times r \\ r = \frac{47.1}{2\pi} = 7.4962996 \\ diameter = 2 \times r \\ = 14.99 = 15 \: feet[/tex]
how do you tell if an equation is a function
Answer:
Step-by-step explanation: You can tell whether a relation is a function by plotting the numbers on a graph and applying the vertical line test. If no vertical line passing through the graph intersects it at more than one point, the relation is a function.
______________________________
Have a nice day!
Can someone help me please
Answer:
38 degrees
Step-by-step explanation:
just know