Answer: A)y = 358,000(2)t
Step-by-step explanation:
since the population is 358,000 and it's decreasing by 2%, then that means that it would 2, hence it would not be b, c, or d
bam hope this helped (if it did mark brainliest)
Answer:
Part A: C) y = 358,000(0.98)^t
Part B: about 323604 people
Step-by-step explanation:
This problem would represent an exponential function, which involves a constant multiplicative rate. I believe you could view it in the form of y = (initial population)(rate)^t.
In this case, since it is decreasing annually by 2%, you could view the multiplicative rate as 98% (0.98 in decimal form), since 98% would be remaining each year you deduct 2%.
So, it would be y = 358,000(0.98)^t for Part A.
For Part B, simply plug in 5 for t, since t is being measured in years:
358,000(0.98)^5 = 323603.645254 ≈ 323604 people
What is the simple interest rate if p = $4000, t = 2 years and I = $320
Answer:
Step-by-step explanation:
interest was $160 for one year.
160/4000 = 0.04 = 4%
HELP!
y = 2.5x + 5.8
when x = 0.6
Answer:
[tex]y = 7.3[/tex]
Step-by-step explanation:
if 60 people were asked their favorite color how many people preferred blue when 26% were red ,16%green,30%blue,4%black and 24%yellow
Answer:
18 people preferred the color blue
Step-by-step explanation:
you switch the percent to a decimal and .30*60 is 18
Answer:
18 people
Step-by-step explanation:
26 red
16green
30blue
4black
24yellow
100percent=60
30=30×60÷100=18
22 x 2.4 please tell me what the estimated answer is
Answer:
52.8
Step-by-step explanation:
WILL GIVE BRAINLIEST! What is the angle formed by the line y=2x–1 and the x-axis?
Answer:
≈ 63.43°
Step-by-step explanation:
Find the equation of the line shown
Answer:
y=2x
Step-by-step explanation:
as y goes up 2 x goes up 1
HELPPP I WILL GIVE YOU BRAINLIEST WALLAH
Answer:
78qt= 19.5 U.S. gallons
Step-by-step explanation:
What is the slope of (-7,-1) (9,-9)
Answer:
-8/16 or -1/2
Step-by-step explanation:
Hi, use the slope-intercept formula (rise over run)
(y₂-y₁)/(x2-x1)
(-9--1)/(9--7)
(-9+1)/(9+7)
-8/16
-1/2
which line are perpendicular to y=1/5x-4 and goes through the point (2,-3)
Answer: y=-5x+7
Step-by-step explanation:
You need to use the point slope formula to solve this equation.
A wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a hippopotamus, she paddles 15 km across a lake. She paddles across the lake for one hour longer than she paddled up the river. Find the speed of the boat as she paddles if the river current is 2 km/h (2 answers)
Answer:
Step-by-step explanation:
5 km/h or 6 km/h
Step-by-step explanation:
Let the speed of the boat be x
Speed against the current in the river is x - 2
Time in the river:
6/(x - 2)
Time in the lake:
15/x
The difference:
6/(x - 2) = 15/x - 1
Solve for x to find the speed of the boat
Multiply both sides by x(x - 2) to clear the fraction:
6x = 15(x - 2) - x(x - 2)
6x = 15x - 30 - x² + 2x
x² - 11x + 30 = 0
(x - 5)(x - 6) =0
x -5 = 0, x - 6 = 0
x = 5 km/h, x = 6 km/h
Your savings account has a balance of 3,500. what interest would you earn in 2 years at 3% simple interest?
Answer:
SI=P*T*R/100
=3500*2*3/100
=210
Answer:
210
Step-by-step explanation:
3,500 × 3% × 2 years
Convert the 3% into a decimal
3% = 0.03
3,500 × 0.03 = 105
105 × 2 = $210
PLEASE HELP ME!!!!!!
9514 1404 393
Answer:
vertex: (2, -3.2)
axis of symmetry: x = 2
zeros: x=0, x=4
formula for axis of symmetry:
x = <x-coordinate of vertex>x = -b/(2a) . . . . . . . where the quadratic is ax^2 +bx +cx = average of zeros, (z1 +z2)/2Step-by-step explanation:
a) The vertex x-coordinate is halfway between the zeros, so is x = (0+4)/2 = 2. It is where the graph has a turning point.
The vertex y-coordinate is the low point of this graph. It is not on a grid line, so we can only guess at its value. I choose to call it -3.2.
The vertex is (2, -3.2).
__
b) The axis of symmetry is the vertical line through the vertex. The constant in its equation is the x-coordinate of the vertex:
x = 2
__
c) The zeros of the function are where the function crosses the x-axis. These are marked on the graph with red dots. The zeros are x=0 and x=4.
__
d) When the quadratic is written in standard form, ax^2 +bx +c, the equation of the axis of symmetry is ...
x = -b/(2a) . . . . . perhaps this is the formula you're being asked for (?)
When there is no equation, the axis of symmetry can be found from the graph a couple of ways. One is to identify the x-coordinate of the vertex.
x = <x-coordinate of the vertex>
Another is to average the zeros, since they are symmetrical about the axis of symmetry.
x = average of zeros = (z1 +z2)/2
If the quadratic is written in vertex form, the vertex coordinate is the constant in the equation for the axis of symmetry.
y = a(x -h)^2 +k . . . . . quadratic with vertex (h, k)
x = h . . . . . . equation of axis of symmetry
The classroom at Lincoln Middle school are painted every summer.If 7 gallons of paint are needed to paint 4 classrooms, how many gallons of paint are needed to paint 16 classrooms
Answer:
Step-by-step explanation:
16c(7g/4c)=28g
Wich value of x is a solution of 5 x + 13 _ = _____ ? x 6
Answer:
ANSWER IS x = 2.6
[tex]5x + 13 = \: 2.6\times 6[/tex]
Step-by-step explanation:
[tex]5x + 13 \\ x = 13 \div 5 \\ x = 2.6[/tex]
Solving Equations
Solve
2k -5k = 3(1 - 2k)
Answer:
3k
Step-by-step explanation:
you multiply the three to the numbers in the ()and subtract the 2k and 5k then you subtract what you got from the () to the number you got from 2k-5k then you will get the answer
Answer:
1
Step-by-step explanation:
Need Help ASAP Will Mark Brainliest
Answer:
I only know where da first one goes lol
Step-by-step explanation:
8.333333333333.... can be denoted using a fraction, therefore it's a rational number. It turns out that irrational numbers cannot be denoted using simple fractions.
What operation does the expression "7y" mean?
Answer:
Multiplication
Step-by-step explanation:
7y means 7 times the value of y. So 7 times y = 7y
52 in
39 in
What is the length of the hypotenuse?
C =
inches
In ΔKLM, m = 320 cm, ∠L=123° and ∠M=52°. Find the length of l, to the nearest centimeter.
Answer:
341
Step-by-step explanation:
l=
sin52/320sin123
≈340.572≈341
I NEED HELP ASAP PLEASE
Answer: The first one is a. the second is b. The third is c and the fourth is d. All of the answers are correct
Step-by-step explanation:
Solve the quadratic equation.
m^2/15 -3 = 2
The answer is [tex] 5 \sqrt{3} [/tex]
Explanation :[tex] \frac{ {m}^{2} }{15} - 3 = 2[/tex]
[tex] \frac{ {m}^{2} }{15} = 2 + 3[/tex]
[tex] \frac{ {m}^{2} }{15} = 5[/tex]
[tex] {m}^{2} = 5 \times 15[/tex]
[tex] {m}^{2} = 75[/tex]
[tex]m = \sqrt{75} [/tex]
[tex]m = \sqrt{25 \times 3} [/tex]
[tex]m = \sqrt{25} \times \sqrt{3} [/tex]
[tex]m = 5 \sqrt{3} [/tex]
CMIIW
Edwin has £300 in his savings account His bank offers him a fixed 5% simple interest rate per annum for a period of 3 years How much internet will he have earned after 3 years?
Answer: £45
Step-by-step explanation:
First find the amount of simple interest in on year:
= Amount * simple interest rate
= 300 * 5%
= £15
Now that you have the annual interest, the 3 year interest is:
= 15 * 3 years
= £45
Which of the following is not a correct factorization of the binomial 10x2 + 40x ?
A. 10x (x + 4)
B. 10 1X2+ 4x
C.5x (2x + 4
D. 5x (2X + 8)
Algebra
Find the values of x and y.
Answer:
y=180-63-63/2=27degree...in triangle mln
x=180-27-63=90....in triangle mon
Answer:
y=27, x=80
Step-by-step explanation:
∠N= 63°(angles opposite to equal sides)
2∠y+63+63=180°(angle sum property)
2∠y=54°
∠y=27°
27°+63°+∠x=180°(ASP)
∠x=180°-90°=90°
Hope it helps, mark me brainliest pls
4 1/3 - 1 1/2
Subtract ROADBLOCK
Answer:
17/6
Step-by-step explanation:
Answer:
2 5/6
Step-by-step explanation:
4 1/3= 13/3
1 1/2= 3/2
lowest common denominator of 3 and 2 is 6 so:
13/3*2/2=26/6
3/2*3/3=9/6
26/6-9/6=17/6
17/6= 2 5/6
(-6) X(-6)=????????????
Answer:
36
Step-by-step explanation:
Cuz negative times a negative is positive
I thought it was x for instance xdd
The face of a clock has a circumference of 147 inches. What is its area? Use 3.14 for 7.
Enter the correct answer in the box.
Answer:
Step-by-step explanation:
C = 2 * pi * r
C = 147
147 = 2 * pi * r
147 = 2*3.14 * r
147 = 6.28 * r
r = 147 / 6.28
r = 23.41
Area = pi r^2
Area = 3.14 * 23.41^2
Area = 3.14 * 547.92
Area = 1720.46
The longest side is 24cm and the second-longest side is 20cm what is the length of the shortest side?
Mai has $36 to spent on movie tickets. Each ticket cost $4.50. How many tickets can she buy?
Answer:
8 tickets
Step-by-step explanation:
To find how many she can buy, divide 36 by 4.5
36/4.5
= 8
So, Mai can buy 8 movie tickets
Latoya is building a fence around her garden. For every 4 feet of fencing, the cost is $36.
Answer:
Length of fencing: 4, 6, 7, 9, 10
Cost: 36, 54, 63, 81, 90
Step-by-step explanation: I hope this gave you your answer!!