Answer:
f(3) = 3
Step-by-step explanation:
f(x) = 2x^2 – 5x
Let x = 3
f(3) = 2(3)^2 - 5(3)
= 2*9 -15
= 18-15
=3
Answer:
f(3)=3
Step-by-step explanation:
This question asks us to find f(3). We want to find what f(x), or y is, when x is equal to 3.
f(x)=2x^2-5x
Substitute 3 in for x.
f(3)=2(3)^2-5(3)
Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.
f(3)=2(9)-5(3)
Multiply 2 and 9
f(3)=18-5(3)
Multiply 5 and 3
f(3)=18-15
Subtract 15 from 18
f(3)=3
click here if your good t math it ez
Write three fractions that are equivalent to 1/2
Use a diagram to show how you know you are right.
Answer:2/4 3/6 4/8
Step-by-step explanation:
How do I find the perimeter for a square and a triangle?
Answer: 24 inches.
Step-by-step explanation:
You can find the perimeter of the polygon by adding the side lengths.
First, find the missing side lengths.
There is a short space between the right side of the square above the triangle. The triangle is 3 inches tall, and the square is 4 inches tall, so that space is 1 inch long.
We can then add the sides to find the perimeter:
4 + 9 + 5 + 1 + 5 = 24 inches long.
Keep in mind that the three inches of the triangle is not included in the sum because it is not on the outside of the polygon. The perimeter only includes the lengths of the exterior sides.
In 2015, about 895.5 million passengers traveled by plane in the United States. Which value is the BEST estimate of the number of passengers?
A. 9 x 10°
B. 9 x 108
C. 8 x 108
D. 8 x 10°
Please help! Correct answer only!
I've been on this question for more than an hour...
You pick a card at random. Without putting the first card back, you pick a second card at random.
What is the probability of picking a 3 and then picking a 3?
Simplify your answer and write it as a fraction or whole number.
Answer:
1/16
Step-by-step explanation:
3 is one of the 4 available choices.
Then, if you pick it again, you get 1/4.
1/4* 1/4= 1/16
Answer:
1/16
Step-by-step explanation:
you have 1/4 chance to get 3 in your case if you pick it two times you gotta multiply the chances 1/4*1/4=1/16
If f(x)=2x+3, find the following value of f(x)=11.
Please help me understand this problem and the answer please.
If f(x) =(2,9%), what is f(3)?
A. 1/729
B. 729
C. 1/81
D. 81
Answer:
CCC
Step-by-step explanation:
Answer:
81
Step-by-step explanation:
a p e x (just took the quiz)
need help asap need to get this done
Answer:
3:4
Step-by-step explanation:
8/6=4/3
12/9=4/3
16/12=4/3
Write the word sentence as an equation.
The quotient of 36 and a number g is 9.
Answer:
[tex]\frac{36}{g}[/tex]=9
Solve :
y=3.58•x+ 202.6
&
y=2.3•x+160.7
Answer:
[tex]x=-32.73\,,\,y=85.43[/tex]
Step-by-step explanation:
Given: [tex]y=3.58x+202.6\,,\,y=2.3x+160.7[/tex]
To find: value of x and y
Solution:
[tex]y=3.58x+202.6\,\,(i)\\y=2.3x+160.7\,\,(ii)[/tex]
From equation (i) and (ii),
[tex]3.58x+202.6=2.3x+160.7\\3.58x-2.3x=160.7-202.6\\1.28x=-41.9\\x=\frac{-41.9}{1.28}=-32.73[/tex]
Put [tex]x=-32.73[/tex] in (i)
[tex]y=3.58(-32.73)+202.6\\=-117.17+202.6\\=85.43[/tex]
Kendra flips a fair coin two times. What is the probability that she will flip tails both times?
Answer:
Step-by-step explanation:
Question is in the picture
Answer:
y = 2x - 7
Step-by-step explanation:
When x is equal to 0, then the y value is your y-intercept. So, your y-intercept is -7.
Now, pick two points. Let's pick (-1,-9) and (0,-7). We can add these into the slope formula.
[tex]Slope(m)=\frac{y2-y1}{x2-x1}[/tex]
[tex]m=\frac{-7-(-9)}{0-(-1)}[/tex]
[tex]m=\frac{2}{1}[/tex]
[tex]m=2[/tex]
Now, we can use the slope and the y-intercept and put them into a slope-intercept equation.
[tex]y=mx+b[/tex]
[tex]y=2x-7[/tex]
Pretty tricky, first correct answer will get brainliest シ︎❤︎✰
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a) The angles should sum to 90 degrees as it is a right angle
Thus x = 90 - 24 - 24
x = 42
b)
(i) It would be j as corresponding angles are equal
(ii) p + q + r = 225
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The points plotted below are on the graph of a polynomial. Which of the following x-values is the best approximation of a root of the polynomial? Check all that apply.
A) x =-3
B) x=0.8
C) x=-1.1
D) x=2.6
E) x=3.6
F) x=-2.1
Im looking for the same answer did you get it?
Answer:
2.6 ,-1,1
Step-by-step explanation:
If p ÷2 = 4 and 2 - q = 4, what is the value of 2p + q
a 12
b 14
c 18
d 22
Answer:
the answer is second one 14
Find the area of the triangle below.
Be sure to include the correct unit in your answer.
65 yd
13 yd
18 yd
Answer:
The area is
[tex]72yd^{2}[/tex]
(square yards)
Step-by-step explanation:
Explanation:
In the given triangle a base 24 y d and the corresponding height 6 y d
is given, so to calculate the area we can use:
A = 1 2× b × h
If we substitute thegiven numbers we get:
A = 1 2 × 24 × 6 = 12 × 6= 72
The units of base and height are the same (yards), so the calculated area is in y d 2 (square yards)
Answer: The area of the given triangle is 72 square yards.
What is the formula for the circumference of a circle in terms of r
Answer:
C = 2πr
Step-by-step explanation:
The formula for the circumference of a circle is C = πd, and since the diameter, d, is equal to double the radius, 2r, we can replace 2r for d. Giving us C = 2πr
The price of a t-shirt is 50$. If you buy 4 shirts, you will get 10% discount. How much do
you have to pay if you buy 8 shirts?
Answer:
360
Step-by-step explanation:
50x4=200
200x0.9=180
180x2=360
Angle relationships with parallel lines can someone answer please help
Answer:
x°= 34°
m<x and angle measuring 34° are corresponding angles since two lines are parallel with a third line intersecting them.
Find the sum of the interior angles
of a polygon with 35 sides.
In the basketball game, the Buffalo made a total of 25 shots. Some of the shots are 2- point shots while others are 3- point shots. If the Buffalo scored a total of 57 points, how many were 2-point shots?
Let's let x be the number of 3-point shots made.
Let's let y be the number of 2-point shots made.
So, then we have:
x+y = 25
And we have
3*x + 2*y = 57
So, we can solve this by substitution. Solving the first equation for x:
x=25-y
Now, plugging into the second equation:
3*(25-y) + 2*y = 57
Simplifying:
75-3y+2y = 26
75-57 = y
y=18
So the player made 18 2-point should and 7 3-point shots for a total of 57 points!
a sector with a central angle measure of 175 degrees has a radius of 12 cm, what is the area of the sector
Answer:
70pi
Step-by-step explanation:
Answer: 70π cm²
Step-by-step explanation: Khan Academy
A)Greg
B)tony
C)Robert
D)John
Answer:
C
Step-by-step explanation:
Let's compare 3/7 and 3/4 first. These two fractions have the same numerator but not the same denominator, so the fraction with the smaller denominator will be larger. Therefore, 3/4 is larger, so we can eliminate A.
4/9 is less than 1/2, and 3/4 is greater than 1/2, so 3/4 is greater than 4/9 and we can eliminate B. The same goes for D.
Therefore, our answer is C) Robert. Hope this helps!
Find a monic quartic polynomial f(x) with rational coefficents whose roots include
x=1-sqrt2, and x=2+sqrt5. Give your answer in expanded form.
Answer:
The polynomial hose roots are :
x = 1 - √2 and
x = 2 + √5
Is
x² - (3 + √5 + √2)x + 2 + √5 - 2√2 -√10 = 0
Step-by-step explanation:
The roots of the equation are
x = 1 - √2 and
x = 2 + √5
(x - 1 + √2)(x - 2 - √5) = 0
x²- 2x - x√5 - x + 2 + √5 + x√2 - 2√2 - √10 = 0
x² - (3 + √5 + √2)x + 2 + √5 - 2√2 -√10 = 0
This is the expanded form
Which ratio is equivalent to the ratio 18:24?
15:20
20:15
30:36
36:30
Answer:
Its none of the above but its 36:48 so try 36:30
Step-by-step explanation:
Mama Mia restaurant used \dfrac12 2 1 start fraction, 1, divided by, 2, end fraction of their mozzarella cheese making pizza and the remaining 646464 ounces making pasta. How many pounds of mozzarella cheese did Mama Mia start with?
Answer:
8 pounds
Step-by-step explanation:
CORRECT: the remaining 64 ounces making pasta.
Assuming 'x' be the total ounces of mozzarella
we know that
making pizza : (1/2)*x => x/2
therefore, making pasta: [x-x/2] => (2x-x)/2 => x/2
making pizza=making pasta=x/2
Thus, (x/2)=64
x=(64)(2)
x=128 ounces
Note that 1 ounces=0.0625 pounds
then, 128 ounces*0.0625=8 pounds
Thus, Mama Mia started with 8 pounds of mozzarella cheese
Peter's grandma has a trapezoidal garden, as in the picture.
a) What is the length of the fence of that garden?
b) What is the area of the garden?
The word in the top left corner in the picture is not linked to this task.
Length of fence = perimeter of trapezoid
= 12 + 6 + 5 + 5
= 28 meters
Area of garden = [tex]h (\frac{base 1 + base2}{2} )[/tex]
= 4([tex]\frac{12+6}{2}[/tex])
= 4 x 9
= 36 sq. meters
This spinner will be spun twice.What is the probability of spinning an odd number both times?
The Probability of spinning an odd number both times is [tex]\dfrac{1}{2}[/tex].
The formula of ProbabilityProbability is calculated by the ratio of favourable outcomes and the total number of outcomes.
How to find the probability?The total number of outcomes of spinning numbers will be 4 that is 1,2,3,4.
And in which the odd numbers are 1,3.
Therefore the favourable outcome of spinning an odd number both the times will be 2.
Then, the probability will be
[tex]P=\dfrac{2}{4} \\P=\dfrac{1}{2}[/tex]
So, the probability of spinning an odd number both times will be [tex]\dfrac{1}{2}[/tex].
Learn more about Probability here- https://brainly.com/question/13957582
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Solve the equation by doing the inverse operation to work backwards
x+13=25
Answer:
x = 12
Step-by-step explanation:
x+13=25
Subtract 13 from each side
x+13-13=25-13
x = 12
Joanna purchased 5 bottles of water for $4.00. What is the cost of one bottle of water?
Answer:
0.80 cents
Step-by-step explanation:
5 bottles/ $4.00 = 1 bottle/ x
4 = 5x
0.8=x
Answer:
$0.80
Step-by-step explanation:
4.00 divided by 5
PLEASE HELP!!
Use the Triangle Inequality Theorem to determine which set of numbers CANNOT form the side lengths of a triangle.
A. 7, 9, 20
B. 6, 14, 17
C. 8, 24, 30
D. 2, 2, 3
E. 12, 22, 32
Answer:A
Step-by-step explanation:
Side lengths do not adhere to the triangle inequality theorem.