Answer:
x = ±7
x=7, -7
Step-by-step explanation:
x^2 = 49
Take the square root of each side
sqrt(x^2) = sqrt(49(
x = ±7
Which table shows exponential decay
Answer:
the first one on the picture.
Step-by-step explanation:
16/2 = 8
8/2 = 4
4/2 = 2
hope this helps :)
In the table, shows' exponential decay is:
The correct option is (A)
We have to find that :
Which table shows exponential decay
From the figure of exponential decay :
When the value of one variable of the function is decreased with increase in the number of other variable, then it is called the exponential decay function with constant exponential coefficient.
It can be given as,
[tex]\frac{dN}{dt}=-\lambda N[/tex]
Here, [tex]\lambda[/tex] is the exponential coefficient.
From Option A:
x y
1 16
2 8
3 4
4 2
The exponential coefficient for first and second row is,
[tex]\lambda=\frac{16}{8}=2[/tex]
Similarly,
[tex]\lambda=\frac{8}{4}=2\\\\\lambda=\frac{4}{2}=2[/tex]
Hence, as all the values of exponential coefficient is same, thus this shown the exponential decay.
From option B:
The exponential coefficient for first and second row is,
[tex]\lambda=\frac{16}{12}=\frac{4}{3}[/tex]
Similarly,
[tex]\lambda=\frac{12}{8}=\frac{3}{2} \\\\\lambda=\frac{8}{4}=2[/tex]
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HELPPPPPP: Simplify - {- [- (-8) ] }
Answer:
[tex]-8[/tex]
Step-by-step explanation:
Just take away parentheses.
PLZZZZ HELP ME ,Plsss
Answer:
V = 72 ft³
Step-by-step explanation:
V = (3 x 8 x 2) + (4 x 2 x 3) = 72 ft³
Answer:
Try 1,152
Step-by-step explanation:
I think you have to multiply all the numbers and get 1,152. I'm not that good at math but.
Find the area of the trapezoid, I will give brainlist. If you can please explain how you got the answer
Answer:
36 sq inches
Step-by-step explanation:
bases are the two parallel sides -- 8" and 4"
height is perpendicular to the base -- 6"
formula for area of a trapezoid: A = 1/2h·(sum of bases)
A = 1/2(6)(8 + 4)
A = 3(12)
A = 36 sq inches
HELP ILL GIVE BRAINLIEST IF RIGHT!!!!
Answer:
Y is 5 and X Is 5 Very easy . . . so it's just 5
i need help to pass math
Answer:
40.82
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
C = 2πr
81.64 = 2(3.14)r - divide both sides by 2
40.82 = 3.14r - divide both side by 3.14
13 = r
Micheal home is 12 feet below and his mother's home is 12 above sea level
Micheal says their homes are elevations because they are in opposite directions Is he correct? Explain.
Answer:
Yes, Michael is correct. The elevation is measured in terms of sea level. Because Michael's home is 12 feet below sea level and his mother's home being 12 feet above sea level, their homes are at equally opposite directions.
Find the value of a. 19 km 19 km Perimeter = 57 kilometers
Answer:
19km
Step-by-step explanation:
The formula for the perimeter of a triangle is: S+S+S.
So;
19km+19km+a=57km
a=57km-19km-19km
=19km
FInd the sum of 5x+20 and the opposite of 20 write an equivalent expression in standard form.Justify each step
Answer:
5x
Step-by-step explanation:
5x + 20 - 20 = 5x
PLEASE HELP!!!
The heights of the children at a summer camp are normally distributed with a mean of 54 inches and a standard deviation of 2.4 inches
What is the height of a child with a -score of 1.5?
Answer:
he is around 4 ft 5 ish
Step-by-step explanation:
yeah
Ryan's take-home pay is $2,500 each month. The amount for gas is $125. Calculate the percentage Ryan uses on gas from his take-home pay. please help!! O^O
Answer: 5%
Step-by-step explanation:
Since Ryan's take-home pay is $2,500 each month and the amount for gas is $125.
The percentage that Ryan uses on gas from his take-home pay will be:
= Amount used on gas / Take home pay × 100
= 125/2500 × 100
= 1/20 × 100
= 5%
He used 5% on gas.
If x = 2, y = 3 and z = 4, calculate the value of each of the following algebraic expression: 3x + 3y =
Find the 75th term: 88, 81, 74, 67, 60
Answer:
a₇₅ = - 430
Step-by-step explanation:
There is a common difference between consecutive terms, that is
d = 81 - 88 = 74 - 81 = 67 - 74 = 60 - 67 = - 7
This indicates the sequence is arithmetic with nth term
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 88 and d = - 7 , then
a₇₅ = 88 + ( 74 × - 7) = 88 - 518 = - 430
The 75th term of the arithmetic progression is -430
What is Arithmetic Progression?
An arithmetic progression is a sequence of numbers in which each term is derived from the preceding term by adding or subtracting a fixed number called the common difference "d"
The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on. Thus nth term of an AP series is
Tn = a + (n - 1) d, where Tₙ = nth term and a = first term.
Here d = common difference = Tₙ - Tₙ₋₁
Sum of first n terms of an AP : Sₙ = ( n/2 ) [ 2a + ( n- 1 ) d ]
Given data ,
Let the Arithmetic progression be = 88 , 81 , 74 , 67 , 60 ...
The first term of the AP is a ₁= 88
Now , the common difference of the AP d = second term - first term
= 81 - 88
= -7
Now , the nth term of the arithmetic progression is given by ,
Tn = a + (n - 1) d
Substituting the values in the equation , we get
T₇₅ = 88 + ( 75 - 1 ) ( -7 )
= 88 + 74 ( -7 )
= 88 - 518
= -430
Therefore , the value of T₇₅ is -430
Hence , The 75th term of the arithmetic progression is -430
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Which number is an integer?
Answer:
Step-by-step explanation:
Can you please specify on that question
Answer:
Integers are numbers that include the negatives, zero and positives.
Step-by-step explanation:
If you ever get confused there's a big circle chart to help you remember look for it online!! What I use to remember is visualizing a number line!
First is the real numbers, so the numbers we were taught since we were little like 1, 2 ,3, 4, 5, 6 and so on. So that's the first part of the number line.
Next is the whole numbers so you just add a zero to that number line. Whole numbers is just all of the real numbers + the number zero.
Then it's the integers so you add the left side of that number line. Integers are real numbers, whole numbers, and negatives. So basically on the number line it's the negatives , zero, and the positives.
Last it's the radicals so all parts of a number like fractions and decimals. So you can add .5 in between the numbers of that numberline.
I hope this strategy helped and if it didn't here's that circle chart!!
I really hope this did help tho!!
Which quadrant point (0,2) is located in the coordinate plane
Answer: It would be on the first quadrant plane or I quadrant
Step-by-step explanation: first the x 0 so you do nothing then y says go up 2 so you do and you end up in the first quadrant place hope this helps
PLS AWNSER NOW
Raul’s monthly budget of $2000 is the same for one year. The circle graph represents how much he spends each month for various expenses. Approximately, how much money does he spend on rent for the entire year?
Answer:
600
Step-by-step explanation:
2000/10=200. 200x3=600
(4) if you can figure this out thank you so much if not still think you try later
Answer:
165m²
Step-by-step explanation:
The figure shown is a parallelogram
The area of a parallelogram can simply be found by multiplying the base length and the height
We are given that the parallelogram has a height of 15 m and a base length of 11m
That being said the area is equal to 15 * 11
15 * 11 = 165
So the area of the parallelogram is 165 m²
Happy Paws charges $20.00 plus $3.50 per hour to keep a dog during the day. Woof Watchers charges $10.00 plus $4.75 per hour. Complete the equation and solve it to find for how many hours the total cost of the services is equal. Use the variable h to represent the number of hours.
Answer:
8 hours
Step-by-step explanation:
Create an equation that sets the costs equal to each other, where h is the number of hours
3.5h + 20 = 4.75h + 10
Solve for h
3.5h + 20 = 4.75h + 10
20 = 1.25h + 10
10 = 1.25h
8 = h
So, it will take 8 hours for the costs to be equal
Find the volume of the cube shown at the right. h=6in
Answer:
216 in³
Step-by-step explanation:
The volume of a rectangular prism is length x width x height
A cube is a special rectangular prism in which all the edges are the same length (like a square)
To find the volume of a cube given the height 6 just solve 6·6·6=216
Don't forget your units and since you cubed 6 inches, they are now in³ or inches cubed
I need the answer as soon as possible with work shown. Thank you!
The length of a rectangle is 3yd longer than its width. If the perimeter of the rectangle is 26 yd ,find its area
Answer:
A=40
Step-by-step explanation:
There are two sides of a rectangle that are the length.
So at 3 twice.
3+3=6
Subtract it from 26.
26-6=20
Divide by 4
20/4=5
Width= 5
Add 3 to 5
3+5=8
L=8
Check:
5+8+5+8=26
10+16=26
26=26
Area= L*W
8x5=40
A=40
Hope I'm correct!
The height of a rocket is modeled by h(t) = -(4t-12)(4t-36). How long after reaching its maximum height does it take for the rocket to hit the ground?
A. 3 seconds
B. 4.5 seconds
C. 7.5 seconds
D. 12 seconds
Answer:
A. 3 seconds
Step-by-step explanation:
what is the product of the polynomials below? (8x^2-4x-8)(2x^2+3x+2)
Help me with this problem please please:):)
Pls help
Pls help
Pls help
Answer:
i bleive that it is 261 havent done this in a wile tho
Step-by-step explanation:
15×12=180 ( did not divide because there are two of the same triangle) and 9×9=81 add them together and you get 216
Does this table show a proportional relationship? If so, what is the constant of proportionality? If not, explain.
Answer:
Yes it does
Step-by-step explanation:
This table has a proportion of 4 since from the weeks and height are times by 4
Example from the table:
Week two has a height of 8 since 2 times 4 is 8
helpppppppp pleaseeeeee
Answer:
7a + b - 16c
Step-by-step explanation:
So we have
7a-3b+c-8c+4b-9c
When it comes to problem like these, you need to combine like terms.
There's only one 'a' number, so that one remains the same.
Next, we have -3b and 4b. (-3b+4b)= b
Finally, there's (c-8c-9c).
(-8c-9c)= -17c
Take that and add the positive 'c' to it.
(-17c+c)= -16c
Put it all together now to get:
7a + b - 16c
I hope that helped and helped you understand at least a little
:)
In the system below, what is the value of k if x = 4? What is the solution to the system?
6x + 8y = k
x + y = 1
The system's solution is (xy, y) = and the k-value is 0. (4, -3).
What does the word "value" mean?Something that someone values are referred to as values. The things that only a person or a company considers "important" are, in other words, their values. Examples include valor, integrity, freedom, and inventiveness.
How do worth and value differ?Value includes both the material and emotional cost of that possession. Only the item's monetary price may be considered its worth. An object's value often remains constant, although it might change based on the person and how much the thing means to them personally.
If [tex]x = 4[/tex], then we can substitute [tex]4[/tex] for [tex]x[/tex] in the second equation to get:
[tex]4 + y = 1[/tex]
Subtracting [tex]4[/tex] from both sides, we get:
[tex]y = -3[/tex]
Now we substitute [tex]x = 4[/tex] and [tex]y = -3[/tex] into the first equation to solve for [tex]k[/tex]:
[tex]6x + 8y = k[/tex]
[tex]6(4) + 8(-3) = k[/tex]
[tex]24 - 24 = k[/tex]
[tex]k = 0[/tex]
Therefore, the value of [tex]k[/tex] is [tex]0[/tex], and the solution to the system is [tex](x, y) = (4, -3)[/tex]
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Find the rate of change from the table ...
Answer:
(34-30)/(4-2)=4/2=2
(38-34)/(6-4)=4/2=2
Step-by-step explanation: basically, we are just trying to calculate the slope, so (y2-y1)/(x2-x1), then you will get your answer
A woman bought a bag of rice for $5700 and in 3 weeks later,she could only buy 3/4 of a bag for $5700. Find the percentage increase.
Answer: 25%
Step-by-step explanation:
3/4x=5700
x = 7600
7600 - 5700 = 1900
19/76 = 25/100 which is 25%
Hope this helps!