Answer:
1,2,5
Step-by-step explanation:
That is just the definition of an element :) the other two answers contradict these.
A population of beetles is growing according to a linear growth model. The initial population (week 0) is
Po = 13, and the population after 8 weeks is Ps = 75.
I
Find an explicit formula for the beetle population after a weeks. P. =
After how many weeks will the beetle population reach 161? 20
Answer:
P=7.75t+13
t = 19 weeks
Step-by-step explanation:
Linear Modeling
Some situations can be modeled as linear functions. If we are in a situation where a linear model is suitable, then we need two sample points to make the model and predict future behaviors.
The linear function can be expressed in the slope-intercept format:
y = mx + b
Another equation of the line can be used when two points are given.
The equation of a line passing through points (x1,y1) and (x2,y2) can be written as follows:
[tex]\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)[/tex]
The population of beetles is a situation where we must apply linear modeling. Two points are given. For time t=0, the population is P=13. The point is (0,13). For time t=8, P=75. The point is (8,75).
Find the equation of the line:
[tex]\displaystyle P-P_1=\frac{P_2-P_1}{t_2-t_1}(t-t_1)[/tex]
[tex]\displaystyle P-13=\frac{75-13}{8-0}(t-0)[/tex]
[tex]\displaystyle P-13=\frac{62}{8}t[/tex]
[tex]\displaystyle P-13=7.75t[/tex]
The explicit formula is:
P = 7.75t + 13
Now we find when the beetle population is 161:
161 = 7.75t + 13
161 - 13 = 7.75t
7.75t = 148
t = 148/7.75
t = 19 weeks
Ice thickness decreases at a rate of 0.2 meters per week. After 7 weeks,the ice is only 2.4 meters thick. What is the equation for relationship between the thickness and the number of weeks?
Answer:
The equation for relationship between the thickness and the number of weeks is f(x)=3.8 -0.2*x
Step-by-step explanation:
Ice thickness decreases at a rate of 0.2 meters per week. This can then be represented by the expression
f(x) = k - 0.2*x
where k is the thickness of the ice before the melting starts and x is the number of weeks.
After 7 weeks, the ice is only 2.4 meters thick. This means that x has a value of 7, while f (7) = 2.4. Replacing in the previous expression:
2.4=k -0.2*7
and solving you get:
2.4=k- 1.4
2.4 + 1.4= k
3.8= k
Then, the equation for relationship between the thickness and the number of weeks is f(x)=3.8 -0.2*x
find the measures of A ,W,X,Y,Z
Answer:
∠A = 120° (180°-60°)
∠W = 60° (b/c ∠W=∠X)
∠Y = 100° (b/c 180°-80°)
∠X = 60° (180°-120°)
∠Z = 120° (180-60°)
Step-by-step explanation:
im unsure about A and W
Answer:
it is a quadrilateral.a+60°+120°+80° = 360°a+260° = 360°a= 360° - 260°a = 100°finding yy = ?80°+y =180°. (linear pair)y = 100° - 80°y=100°now, find z .z + 60° = 180°z= 180°-60°z= 120°w = ?W+a = 180.w+100°=180.w=180°-100°w=180°find x,x+120° = 180°x= 180°- 120°x=60°a = 100°. , x = 60°. , y =100°. , z =120°. , w = 180.please mark as brainliest.......someone please help plzzz
Jenny and Julie each drank a cup of hot chocolate after playing in the snow. Jenny put 6 more marshmallows in her cup than Julie. Together Jenny and Julie had a total of 6 marshmallows. How many marshmallows did Jenny (x) and Julie (y) each have in their hot chocolate? I need to find the system of equations
Answer:
well if jenny put 6 MORE marshmellows in her cup thenjulie and they added up to 6 then julie must of not had any
Step-by-step explanation:
Enter the equation of the line in the form y=md where m is the slope
I think you were talking about the formula:
y = mx+b
y= 3(1)
or y=3
3 x 3/10 in simplest form
Answer:
9/10
Step-by-step explanation:
no
Select all expressions that are equivalent to x? + 4x.
A. x(x + 4)
B. (x + 2)2
C. (x + x)(x + 4)
D. (x + 2)2 - 4
E. (x + 4)
Answer:
A only
Step-by-step explanation:
you can't get x^2 from any other choices
I have 3 minutes. Please hurry
what do you need help with (no pic or no question)
Answer:
what is the question>?>
Step-by-step explanation:
HELP FAST I’LL MARK YOU BRAINLIEST What is the slope of a line perpendicular to the line whose equation is 6x+4y=72. Fully reduce your answer.
Answer:
2/3
Step-by-step explanation:
6x + 4y = 72
-6x -6x
4y = 72 - 6x
/4 /4
y = 18 - 6/4x
y = -6/4x + 18
perpidicular slope is the opposite reciprical of the original line:
-6/4 is the slope of the line above.
4/6 or 2/3 would be the desired slope
check:
the two slopes mutplied would equal -1
-6/4 x 2/3 = -12/12 = -1
Solve The Following System of equations by graphing
3x + y = 5
x - 4y = 32
first you convert to slope intercept form
3x+y = 5 is the same as y = -3x+5
x - 4y = 32 is the same as y = 4x-8
then you graph
(starting with the y-intercepts as your first points)
the point where the two lines intercept is your solution.
distance from (7,4) and (2,8)
Answer:
5,4 or 9
Step-by-step explanation:
Answer:
Exact form: √ 41
Decimal form: 6.40312423...
Step-by-step explanation:
PROBLEM 3: Sales tax in a certain community is 7%. If the sales tax on a new car was $1400, what was the selling price of the car? Rephrase: $1400 is 7% of what number?
Answer:
$20,000
Step-by-step explanation:
Let the new car price before tax be p. If the sales tax was $1400, then the following is true: 0.07p = $1400, and p = $20,000
$1400 is 7% of the before-tax new car price, which is $20,000
BRIANAG AND MAYONAISE GIVE THEM A BREAK
Answer:
Lol.
Step-by-step explanation:
Answer: lol
Step-by-step explanation:
denise walks on the beach every afternoon in the month of july she walked 3.45 miles each day how far does denise walk during the month of july
Answer:
106.95
Step-by-step explanation:
there are 31 days in july so if multiply 3.45 and 31 you get your answer
A line passes through the points (2, 1) and (6, 9). Write a linear function rule in terms of x and y for this line. Hint: put in linear function form y= mx + b??
Answer:
so m=2 so y=2x+-3
Step-by-step explanation:
The equation of the line will be written as y = 2x - 3.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given that a line passes through points (2, 1) and (6, 9). The equation of the line will be written by calculating the slope and y-intercept.
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Slope = ( 9 - 1 ) / ( 6 - 2 )
Slope = 8 / 4
Slope = 2
The y-intercept will be calculated as,
y = mx + c
1 = ( 2 x 2 ) +C
C = 1 - 4 = -3
The equation will be written as,
y = 2x - 3
To know more about an equation of the line follow
https://brainly.com/question/18831322
#SPJ2
which of the following inequalities is equivalent to 1 > x?
x<1
x>-1
x>1
x<-1
Answer:
Im guessing x<1
Question below, please help me
what is all of the colors
Answer:
red, yellow, blue, brown, orange, green, violet, black, carnation pink, yellow orange, blue green, red violet, red orange, yellow green, blue violet, white, violet red, dandelion, cerulean, apricot, scarlet, green yellow, indigo and gray, canary yellow, unmellow yellow, emerald, jade, green earth, champagne pink, pink lace, piggy pink, magenta,
Step-by-step explanation:
The value of the expression StartFraction 2 x squared Over x EndFraction plus x (100 minus 15 x) when x = 5 is
Answer:
The value of the expression Start Fraction 2 x squared Over x End Fraction plus x (100 minus 15 x) when x = 5 is 119.
Step-by-step explanation:
A doctor has assigned the following chances to a medical procedure.
full recovery
55%
condition improves 24%
no change 17%
condition worsens
4%
Suppose the procedure is performed on 5 patients. Assume that the procedure is independent for each patient.
What is the probability that all five patients will recover completely?
a. 5%
C. 10%
b. 55%
d. 15%
Answer:
5%
Step-by-step explanation:
Writing two column proofs
You have the right idea so far.
Use the fact that x = y and z = y to get x = z. We can use the transitive property or the substitution property (they are effectively the same idea).
Then you'll use the fact that w = x and w = t to get x = t. The same property is used here as well.
Lastly, connect x = z and x = t which will end up with t = z.
Scott ran 40 miles in 8 hours. Which function could determine the number of
A) y = 4x
B) y = 52
C) = 6c
Answer:
Pace per mile
12 : 00
min : sec
Speed 0.0833 miles per minute=5 miles per hour
Step-by-step explanation:
THE NUMBER OF ...???
whaats the rest
Ask a question an dorms please solve this
A recipe calls for 15 oz of flour every 8 oz of milk. If you use 16 oz of milk, how much flour will you use?
Answer:30 oz of flour
Step-by-step explanation:
Hope it helps
Tonisha has a lemonade stand. She has $31 in expenses and wants to make $69 per day. If X represents the amount of revenue from selling lemonade,an inequality to represent the amount of revenue she would need to generate would be:_____? Tonisha needs to sell how much each day?
Answer:
x - 31 [tex]\geq[/tex] 69
Tonisha has to make at least $100 in revenue
Step-by-step explanation:
Set up the inequality:
x - 31 represents her profit
Since she wants to make at least $69 a day, use [tex]\geq[/tex] 69
So, the inequality is x - 31 [tex]\geq[/tex] 69
Then, solve for x to find how much she has to sell:
x - 31 [tex]\geq[/tex] 69
x [tex]\geq[/tex] 100
So, Tonisha has to make at least $100 in revenue
Solve the linear equation 2.25 – 11j – 7.75 + 1.5j = 0.5j – 1
Answer: J = −0.45
explanation: Isolate the variable by dividing each side by factors that don't contain the variable.
This lesson is almost ⅔ over. Express this number as a decimal.
Answer:
0.66666667
Step-by-step explanation:
Answer:
3 will divide 2 but since 3cannot get into 2, there will be 0. and 0 would be added to the 2 to make it 20
then 3 gets into 20 six times remainder 2 but still continues.
however, since 6 is greater than 5, it can be round down to get 0.67/0.667
The sum of two numbers is 52. The greater number is 4 more than the smaller number. Which equation can be used to solve for the smaller number? (5 points)
x − (x + 4) = 52
x + (x + 4) = 52
x(x + 4) = 52
x(x − 4) = 52
Answer:
x+(x+4)=52
Step-by-step explanation:
let the small number be x
The greater number is 4 more than the small number=x+4
sum of numbers= x+ (x+4)
2+4 =4+2 what property is being used here ?
Answer:
pretty sure its communitive property
