Answer:
A: 82.5
Step-by-step explanation:
Average score of the 4 regular tests = (78 + 72 + 74 + 88)/4 = 78
We are told;
- the regular tests account for 40% of the final grade.
- final exam counts for 20%
- project counts for 10%
- homework counts for 30%
Thus;
weighted mean grade = (40% × 78) + (20% × 79) + (10% × 88) + (30% × 89) = 82.5
The equation
^
Y=-0.37x^2+6.15x+52.3 approximates the average temperature in October in degrees Fahrenheit at an agricultural community x hours after 5 a.m.
What is the best estimate for the average temperature in October at 2 p.m.?
64 F
67 F
71 F
78 F
Answer:
best approximate is 78 F. to find x, count number of hours between 5 am and 2 pm (which is 9). Substitute 9 into the equation and solve. hope this helps!
Step-by-step explanation:
[tex]y = - 0.37 {x}^{2} + 6.15x + 52.3 \\ y = - 0.37 ({9}^{2} ) + 6.15(9) + 52.3 \\ y = - 0.37(81) + 6.15(9) + 52.3 \\ y = - 29.97 + 55.35 + 52.3 \\ y = 77.68[/tex]
Geometry Help Please
Answer:
600 sqrt(3)
Step-by-step explanation:
sides of hexagon
120÷6=20
A=(3sqrt(3))/2×20^2
≈1039.23048
4. Which is the better value? Show your work and explain your choice.
or
Option A: 36 markers for $4.50
Option B: 20 markers for $2.70
Here are some pictures of my question helpp pleaseee
Answer:
3. B = Median
4. A =skewed right
Step-by-step explanation:
\ 28,24,32,28,25,34\ What is the MAD for these numbers ?
A batter hits a baseball 4 feet above the ground with an upward velocity of 59 feet per second. The function h(t) = -16t^2 + 49t + 4 gives the height h (in feet) of the baseball after t seconds. How long is the ball in the air if a player on the other team catches the ball 7 feet above the ground?
Answer:
3 seconds
Step-by-step explanation:
when h=7 ft
-16t²+49t+4=7
-16t²+49t-3=0
16t²-49t+3=0
16t^2-48t-t+3=0
16t(t-3)-1(t-3)=0
(t-3)(16t-1)=0
t=3,t=1/16
t=1/16 seconds is the time when it just started.
so reqd. time=3 seconds.
I'll be posting more question like these so keep a look out
Answer:
for question 1 the answer is 9 10/11
Step-by-step explanation:
A lake near the Arctic Circle is covered by a 222-meter-thick sheet of ice during the cold winter months. When spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. After 333 weeks, the sheet is only 1.251.251, point, 25 meters thick.
Let yyy represent the ice sheet's thickness (in meters) after xxx weeks.
Complete the equation for the relationship between the thickness and number of weeks.
y=y=y, equals
Answer:The question is a little incorrect, the ice sheet thickness should be 2m and not 222m.
The required function formula is,
S(t) = 2 - 0.25 t
Step-by-step explanation:
Here, the initial thickness of the ice sheet = 2 meters,
After 3 weeks, the thickness of ice sheet = 1.25 meters
Total changes in the thickness in 3 weeks = 2 - 1.25 = 0.75 meters,
⇒ Total changes in the thickness in 1 weeks = 0.75/3 = 0.25 meters,
Since, the ice is melting with the constant rate.
⇒ The rate of ice decreasing = 0.25 meters per week.
⇒ Total changes in t weeks = 0.25 t meters
The new thickness of ice after t weeks = Initial thickness - Total changes in t weeks.
⇒ S(t) = 2 - 0.25 t
Which is the required function's formula.
what is 1.68 round off to the nearest whole number
7th grade math help me pleaseeee
Answer:
Step-by-step explanation:
Each game costs 2 dollars, so that total spent on games will be 2 * x. We have to add the one time payment of $3, so this will be (2 * x) + 3. Finally, she spends a total of $17, so the final equation will be (2 * x) + 3 = 17.
Express your answer in scientific notation.
4.9 X 10^5 – 5.8 X 10^4
WILL MARK BRAINLIST
Answer: =432000
Step-by-step explanation: Hope this help :D
What is the graph of the function f(x)=[x-1]?
Answer:
should be the one on the top right
Aliya buys p pounds of apples for $2 per pounds. Write an algebraic expression to find the total cost?
Answer:
Identify the terms and coefficients of each expression. 1. ... Frank buys p pounds of oranges for $2.29 per pound and the same number of pounds of apples for $1.69 per pound. ... .690 = total cost ... Write an expression to represent each situation. 9. Eliza earns $400 per week plus $15 for each new customer she signs up.
Step-by-step explanation:
In DOG shown at the right, OG = 7, DG = 8, and m<DOG = 90. What is the measure of LG?
Pliss help me =<
G would be like 75 ..
HELP ME PLEASE
Which point is not on the graph of
y=2x+3
A. (1, 5)
B. (2, 7)
C. (3,9)
D. (5, 1)
Answer:
D.
A linear equation is an equation with two variables whose graph is a line. The graph of the linear equation is a set of points in the coordinate plane that all are solutions to the equation.
[tex]y = 2(5) + 3 = 13 [/tex]
The table below displays the purchases that Graphic DesignWorks made from
a manufacturer this year for graphic T-shirts. If Graphic DesignWorks uses
LIFO, and it has 400 T-shirts left in its inventory, what is the value of its current
stock?
Number of T-
shirts
Price per T-
shirt
Month of
purchase
June
July
August
September
200
300
400
300
$8
$10
$12
$13
A. $3600
B. $5200
C. $5100
D. $3200
Answer:
a.
Step-by-step explanation:
please make me a happy with brainleist answer
The value of its current stock is $3600 if the graphic design works use LIFO, and it has 400 T-shirts left in its inventory option (A) is correct.
What is LIFO?Last in, first-out (LIFO) is an inventory valuation approach based on the principle that the first asset sold is the most recent asset received.
We have data shown in the table:
Total number of T-shirts = 200+300+400+300 = 1200
As there are only 400 T-shirts left it means,
So (1200-400)800 T-shirts sold out according to LIFO last month T-shirt sold out.
200 T-shirts left in the June stock
Out of 300, there are 200 T-shirts left in the month of July.
Cost for 200 T-shirts = 200×8 = $1600
Cost for 200 T-shirts = 200×10 = $2000
Total cost = 1600+2000
= $3600
Thus, the value of its current stock is $3600 if the graphic design works use LIFO, and it has 400 T-shirts left in its inventory.
Learn more about the LIFO here:
https://brainly.com/question/17236535
#SPJ2
The legs of a right triangle are represented by the expressions 2x and 2x-1. The hypotenuse of the same triangle is represented by the expression 3x - 1 1. What is the perimeter of the triangle?
Answer:
12
Step-by-step explanation:
Which temperature is colder -10 or 0
Answer:
-10
Step-by-step explanation:
What is the first step in solving the inequality m-2/6 < -1?
O Multiply both sides by 6.
O Add 2 to both sides.
O Change the direction of the inequality.
O Change the inequality to s.
HELP IM ON A TIMED TEST
Step-by-step explanation:
change the directions i think
you have to make the -1 -> 0
you have to multiply by -1
and if you multiply the direction will change
Is the ordered pair (-5, 4 a solution of
the system of linear equations whose
graph is shown? Explain your reasoning.
Answer:
No
Step-by-step explanation:
No, (-5, -4) is not a solution to the system of equations. In order for a point to be a solution to a system of equations, the lines have to intersect at that point in a graph. Looking at the given graph, the lines do not intersect at (-5, -4), but at (-4, -5) instead. Thus, (-5, -4) is not a solution.
3 times the sum of 4 and 9
Answer:
3x4+9= 39
Step-by-step explanation:
:))
Pythagorean Theorem Determine the length of the missing side?
Answer:
c= sqrt149; 12.2 rounded
Step-by-step explanation:
Pythagorean Theorem to find c(hypotenuse): a^2+b^2=c^2
7^2+10^2=149
sqrt149= 12.2 rounded
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
2A
6X^2
Step-by-step explanation:
given that 4x^2-32x-20+k is a perfect square find k
Answer:
k = 20Step-by-step explanation:
Perfect square identity:
(a + b)² = a² + 2ab + b²Completing the square:
4x² - 32x - 20 + k = (2x)² - 2*2x*8 + 8² - 20 + k =(2x - 8)² - (20 - k)In order the given to be a perfect square, we need:
20 - k = 0k = 20the ratio of wins to games played fir certain siftball team.is 2 to 3 I the team played 33 games how many game did the team win PLS HELP
Answer:22
Step-by-step explanation:
tell me if you want the explanation in the comments
Answer:
22
Step-by-step explanation:
If the total is 33 games ,33 divided in 3 parts,each part is 11
Of the 3 parts the team won 2 parts
so 2x11 = 22
I Mark Brainliest ! No Bots Plz
Select All that apply
Answer:
i think its the second and third
Step-by-step explanation:
im not completely sure though so please dont get mad if its wrong
Find the 1st 4 iterations if f(o)= -2, f(n)= 3f(n-1)-2n
Answer:
Step-by-step explanation:
f(0) = -2
f(1) = 3*(f(1 - 1)) - 2*1
f(1) = 3(-2) - 2
f(1) = - 6 - 2
f(1) = - 8
f(2) = 3*(f(1)) - 2*2
f(2) = 3*(-8) - 4
f(2) = -24 - 4
f(2) = - 28
f(3) = 3*(f(2)) - 2*3
f(3) = 3*-28 - 6
f(3) = -84-6
f(3) = - 90
f(4) = 3*f(3) - 2 * 4
f(4) = 3*-90 - 8
f(4) = -270 - 8
f(4) = -278
1. Simplify.
a) 698 x 32
b) 984 : 24
Answer:a) 34916 b) 411
Step-by-step explanation:
What is the value of the expression 6 +5. (8 + 2)²?
The value of the expression 6 +5. (8 + 2)² is 506 after solving with BODMAS rule.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
We have an epression:
= 6 +5. (8 + 2)²
We can solve the above expression by BODMAS:
= 6 + 5(10)²
= 6 + 5(100)
= 6 + 500
= 506
Thus, the value of the expression 6 +5. (8 + 2)² is 506 after solving with BODMAS rule.
Learn more about the expression here:
brainly.com/question/14083225
#SPJ1
PLEASE HELP ME FIND THE ANSWER!!!!
Answer:
Step-by-step explanation:
Remark
The position of these two angles is called vertically opposite. Every time two lines cross like this, you get vertically opposite angles. The point is that vertically opposite angles are equal.
x + 5= 46 Subtract 5 from both sides
x + 5-5 = 46-5
x = 41
