Answer:
Step-by-step explanation:
Here are some steps to help you
Step 1
18 - 2n2 We are gonna be evaluating
Step 2
18 - 2n^2 Substitute n for 3
18-2(3^2)
Step 3
18-2(3^2) simplify
0
So therefore, your answer is 0
Hope this helps
Evaluate the function f(x)=4x^2-10+2 find f(-7)
Answer:
188
Step-by-step explanation:
f(x)=4x² - 10+2
f(-7) = 4x² - 10 + 2
= 4(-7)² - 10 + 2
= 4 (49) - 10 + 2
= 196 - 10 + 2
= 188
Two window washers, Meg and Bert, lean a ladder against the side of a building so that Meg can wash a window while Bert holds the ladder. The top of the ladder reaches the window, which is 8 meters off the ground. The base of the ladder is 6 meters away from the building. How long is the ladder?
Step-by-step explanation:
we can solve this question using Pythagorean theorem the hypotenuse of the ladder is 8 metres and base of the ladder is 6 metres so height will be..........
Hypotenuse²=Base²+ Height²
8²=6²+H²
64-36=H²
28=H²
7√2=H² Answer
Answer:
10
Step-by-step explanation:
A fine fabric was selling for $10.50 per half yard. Joni bought 2 1/3 yards. How much did he spend? Brainliest for correct answer. (ANSWER ISN'T 45.5)
Answer:
45.5
Step-by-step explanation:
First you would find 1/3 third of 10.50 and it is 3.5, you would then do 10.50 x 4 since it said 10.50 per half a yard, so you would do times 4 and you would get 42, you would then add 42 + 3.5 which equals 45.5.
The question is in the screenshot.
Vertex:
Axis of Symmetry:
Y-Intercept:
Domain:
Range:
Does it open up or down?
Does it have a max or min?
Roots: ( ) and ( )?
Use the rule y = 6x to fill in the table with the missing number.
X 3 5 8 6 4
Y 18 30 48 36 __
In trail mix, the ratio of cups of
peanuts to cups of chocolate
candies is 3 to 2. How many cups
of chocolate candies would be
needed for 9 cups of peanuts?
PLEASE HELP! :(
Suppose that c varies directly with n, and n=8 when c=13. Find n when c=4.
as c and n directly vary it can be said that
[tex]\frac{8}{13} = \frac{n}{4}[/tex]
now we just solve for n
[tex]\frac{8}{13}=\frac{n}{c} \\13n=32\\n=2.46[/tex]
i do not get can some one help i really need it
Answer:
8 lb
Step-by-step explanation:
Use the graph relations.
Answer:
7.5 lb
Step-by-step explanation:
Look at the points on the graph.
She paid $1 for 1.5 lb.
She paid $2 for 3 lb.
She paid $4 for 6 lb.
She paid $7 for 10.5 lb.
Now divide each amount of lb by each cost.
1.5/1 = 1.5
3/2 = 1.5
6/4 = 1.5
7/10.5 = 1.5
In every case, she got 1.5 lb for each dollar.
On the day she spent $5, she got 1.5 lb for each dollar.
$5 * 1.5 lb/$ = 7.5 lb
Answer: 7.5 lb
50 POINTS!!!!PLEASE HELP ME IM GONNA CRY I'VE BEEN ASKING FOR A DAY NOW!!! What is the scale factor of two regular pentagons that have areas of 50cm square and 162cm square.
Answer: 25/81 also there is a scale factor calculator online tht you can use ill give you the link if you want it
Step-by-step explanation:
Answer:
25/81
hope It helped please mark brain list
how many 22 are in 144 ?
Answer:
6.545 recurring
Step-by-step explanation:
we need to use division to answer this question!
144/22 = 6.545 recurring
hope this helped!
-cheesetoasty
Eli has a collection of football and baseball cards. In all, he has 360 cards in his collection. Twice the number of baseball cards is 30 less than three times the number of football cards. How many more baseball cards than football cards does Eli have?
Answer:
150 football cards
210 baseball cards
Step-by-step explanation:
b + f = 360
2b = 3f - 30
Change second equation to be: 2b - 3f = -30
Multiply first equation by -2 to get: -2b -2f = -720
Add to get: -5f = -750
f = 150
b = 360-150 = 210
If f(x) is an exponential function where f(1) =11 and f(6.5) = 100, then find the value of f(12) to the nearest hundredth.
Answer: f(12) is estimated to 909.09
Step-by-step explanation:
x/3-300=250 Show your work
Answer:
x=1650
Step-by-step explanation:
1650/3=550-300=250
Answer:
x = 1650
Step-by-step explanation:
We are given the equation x/3 - 300 = 250 and are asked to solve for x.
To solve this, we need isolate x, do as followed :
x/3 - 300 = 250
Add 300 to both sides :
x/3 = 550
Multiply 3 to both sides :
x = 1650
The population of Medford High School is
800 students and the population of
Westville High School is 1240 students.
The population of Medford High is
increasing at a rate of 30 students per
year, while the population of Westville
High is decreasing by 25 students per
year. In about how many years will the
population of the two schools be the
same?
Answer:
in 8 years each school will have about 1,040 students
Step-by-step explanation:
let 'x' = years
y = 30x + 800
y = -25x + 1240
30x + 800 = -25x + 1240
55x = 440
x = 8
DONT SEND A LINK TO DOWNLOAD A PIC IN THIS
Is the relation shown a function? Explain.
Answer:
no because there are more than 1 X inputs.
Step-by-step explanation:
Answer:
Nope
Step-by-step explanation:
The relation isn't a function because a function is a relation where each x-value has only one corresponding y-value. Try to put a vertical line through that shape made by the graph to test if it's a function. If it passes through multiple points, it's not a function. For example, if you put the vertical line x=3 in that same graph, it will intersect with the relation at points (3, -3) and (3, 4), and therefore is not a function.
hope this helps, please lmk if im wrong!!!
The upper-left coordinates on a rectangle are (-6,0)(−6,0)left parenthesis, minus, 6, comma, 0, right parenthesis, and the upper-right coordinates are (-4,0)(−4,0)left parenthesis, minus, 4, comma, 0, right parenthesis. The rectangle has an area of 121212 square units. Draw the rectangle on the coordinate plane below.
Answer:
See attachment for rectangle
Step-by-step explanation:
Given
[tex]A = (-6,0)[/tex]
[tex]B = (-4,0)[/tex]
[tex]Area = 12[/tex]
Required
Draw the rectangle
First, we calculate the distance between A and B using distance formula;
[tex]AB = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}[/tex]
So, we have:
[tex]AB = \sqrt{(-6 - -4)^2 + (0- 0)^2}[/tex]
[tex]AB = \sqrt{(-2)^2 + (0)^2}[/tex]
[tex]AB = \sqrt{4 + 0}[/tex]
[tex]AB = \sqrt{4}[/tex]
[tex]AB = 2[/tex]
The above represents the length of the triangle.
Next, calculate the width using:
[tex]Length * Width = Area[/tex]
[tex]2* Width = 12[/tex]
Divide both sides by 2
[tex]Width = 6[/tex]
This implies that, the width of the rectangle is 6 units.
We have:
[tex]A = (-6,0)[/tex]
[tex]B = (-4,0)[/tex]
Since A and B are at the upper left and right, then the ther two points are below.
6 units below each of the above point are:
[tex]C = (-6,0-6)\\[/tex] => [tex]C = (-6,-6)[/tex]
[tex]D = (-4,0-6)[/tex] => [tex]D = (-4,-6)[/tex]
Hence, the points of the rectangle are:
[tex]A = (-6,0)[/tex]
[tex]B = (-4,0)[/tex]
[tex]C = (-6,-6)[/tex]
[tex]D = (-4,-6)[/tex]
See attachment for rectangle
Evaluate without a calculator:
cot -270°
Answer:
0
Step-by-step explanation:
The cotangent function is defined as cot x = adj / opp.
The terminal side of 270 degrees is the lower half of the y-axis. The adj side is zero (0) and the opp side is -1;
Therefore, cot (-270 degrees) = adj / opp = 0/(-1) = 0
The required answer is cot(-270°) is undefined
Given that cot(-270°).
To evaluate cot(-270°) without a calculator, use the trigonometric properties and definitions.
First, let's recall the definition of the cotangent function. The cotangent of an angle is defined as the ratio of the adjacent side to the opposite side in a right triangle.
cot(theta) = adjacent side / perpendicular
When we consider -θ, it represents a reflection or rotation of θ about the origin. This reflection does not affect the ratio of the adjacent side to the opposite side in a right triangle.
Thus, cot(-θ) = cot(θ).
In this case, dealing with an angle of -270°. Since angles can be measured counterclockwise, -270° represents a rotation of 270° clockwise from the positive x-axis.
At -270°, the terminal side of the angle lies on the negative y-axis.
cot(-270°) = cot(270°)
Since 360° - 270° equals 90°, cot(360° - 270°) = cot (90°)
At 90°, the terminal side of the angle lies on the positive y-axis.
In a right triangle formed with the terminal side of the angle, the adjacent side and the opposite side are both zero.
Since the cotangent is the ratio of the adjacent side to the opposite side, and both sides are zero in this case, the cotangent of -270° is undefined or "not defined."
Therefore, cot(-270°) is undefined.
Learn more about trigonometric functions and angles click here:
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I dont know what a complementary angle is, can someone help me with this quistion please?
Answer:
A, complementary angles sum up to 90°
Select the correct answer.
Consider this equation.
sin(0)
310
10
If 8 is an angle in quadrant II, what is the value of tan()?
O A.
V10
10
OB.
10
10
OC.
--3
OD. 3
Which of the following is a square root of 3(cos(4pi/9)+i sin(4pi/9))
Answer:
— 4√16(cos(4π3)+isin(4π3))=2(cos(−π6)+isin(−π6))=√3−i. Explanation: De Moivre's formula tells us that: (cosθ+isinθ)n=cosnθ+isinnθ.
Step-by-step explanation:
Answer:
its not b or a
Step-by-step explanation:
The Candle Company is designing a new cylindrical candle. They are looking at four different molds. Which mold will use the
least amount of wax?
Mold
A
B
Candle Mold Choices
Diameter
2 inches
2 inches
inches
inches
Height
7 inches
4 inches
3 inches
3 inches
C
D
3
4
Recall the formula V= 72.
Mold A
Mold B
Mold C
Mold D
Answer:
mold B
Step-by-step explanation:
The molds are of cylindrical shape. The volume of a cylinder is given by:
Volume = πr²h
where r is the radius and h is the height.
For mold A: diameter = 2 inches, hence radius = 1 inch. Height = 7 inches
volume = π(1²)7 = 7π in³
For mold B: diameter = 2 inches, hence radius = 1 inch. Height = 4 inches
volume = π(1²)4 = 4π in³
For mold C: diameter = 3 inches, hence radius = 1.5 inch. Height = 3 inches
volume = π(1.5²)3 = 6.75π in³
For mold C: diameter = 4 inches, hence radius = 1.5 inch. Height = 3 inches
volume = π(2²)3 = 12π in³
Therefore mold B has the smallest volume
Answer:
B
Step-by-step explanation:
A digital board game has 25 squares with 5 squares of each color. The results of 625 games are shown below. Color Frequency Green 119 Orange 130 Pink 126 Violet 114 Yellow 136 For which color is the experimental probability closest to the theoretical probability?
HELP ASAP PLEASEEEEE
Answer:pink
Step-by-step explanation:
Ian’s favorite part of the pizza is the crust. Which size pizza should they order to get 37.68 inches of crust?
Answer:
extra-large
Step-by-step explanation:
Can someone please help me
Answer:
Number 1: 1 2/4 or 1 1/2
Number 2: 2 4/6
Number 3: 5/6
Step-by-step explanation:
For Numbers 1 and 2... You'd have to separate the whole number from the fraction and subtract accordingly.
Number 1: 2-1=1 and 3/4-1/4=2/4
So you would get 1 2/4.
Number 2: 3-1=2 and 5/6-1/6=4/6
You would get 2 4/6
For Number 3 you would have to find the LCD (Least common denominator) for 1/2 and 2/3.
The answer will then be 5/6.
(I couldn't solve number 4 because it wasn't visible.)
I hope I helped! Leave a rating and a Thanks below. :D
What is the volume, in cubic in, of a rectangular prism with a height of 11in, a width
of 20in, and a length of 19in?
The volume of the rectangular prism is 4180in^3.
What is rectangular prism?"A rectangular prism can be defined as a 3-dimensional solid shape which has six faces that are rectangles".
For the given situation,
Length of the rectangular prism = 19 in
Width of the rectangular prism = 20 in
Height of the rectangular prism = 11 in
The formula for volume of the rectangular prism,
[tex]V=l[/tex] × [tex]w[/tex] × [tex]h[/tex]
On substituting the values,
⇒[tex]V= 19[/tex] × [tex]20[/tex] × [tex]11[/tex]
⇒[tex]V=4180[/tex]
Thus the volume of the rectangular prism is [tex]4180 in^{3}[/tex].
Learn more about rectangular prism here
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HELPP ME PLEASE!!!!
don’t answer just for points or i’ll report you.
Answer:
8.3
Step-by-step explanation:
8.3 - 8.3 = 0
Answer:
8.3+(-8.3) would equal 0 so the answer should be 8.3
i need help pls respond
Answer:
The second one
Step-by-step explanation:
This is because it is asking for a budget meaning that you have to spend less or equal to 200
Step-by-step explanation:
You can't spend MORE THAN 200 dollars in cash$200 must be the most you can spend$200 will always be more than m or m will always be less than $200please help
will mark brainlist
its b
Step-by-step explanation:
all the others don't work
Answer:
yea, I think its the second one
The radius of a circle is 1 yard. What is the circle's circumference?
r=1 yd
Use 3.14 for .
The circumference of the circle is 6.28 yards.
What is circumference of the circle?"It is the length of the boundary of the circle."
Formula to calculate the circumference of the circle:C = 2 × π × r, where 'r' is the radius of the circle.
For given example,
r = 1 yd.
π = 3.14
Using the formula for the circumference of circle,
⇒ C = 2 × π × r
⇒ C = 2 × 3.14 × 1
⇒ C = 6.28 yd.
Therefore, the circumference of the circle is 6.28 yards.
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At their annual car wash, the science club washes 30 cars in 45 minutes. at this rate, how many cars will they wash in 1 hour?
Answer:
https://socratic.org/questions/at-their-annual-car-wash-the-science-club-washes-30-cars-in-45-minutes-at-this-r
Step-by-step explanation:
answer is in here yw
