Answer: 2.8
Step-by-step explanation: 80/100 of 14 = 11.2
Wrong = 14 - 11.2
Answer:
You got 11.2 questions right and 2.8 questions wrong.
Step-by-step explanation:
80% * 14 is 11.2
And 14-11.2 is 2.8
The equation 2(x + 3) = 20 has the same solution as the equation 2x + 3 = 20. Question 4 options: True False
Answer:
False
Step-by-step explanation:
Because when you distribute 2(x+3)=20 turns to 2x+6=20 and 2x+6≠2x+3
can you you help me for my lil sister thanks
Answer:
sure , brainly Gal, we don't want your sister to know you don't know :DDDDDDD
Step-by-step explanation:
they tell us, Y= 3x +2 as the rule ( equation) for the line, then they give us the x points
X=0 Plug X into equation Y=3(0)+2 then Y = 2 that's point (x,y) = (0,2)
X=1 Plug X into equation Y=3(1)+2 then Y = 5 that's point (x,y) = ( 1,5)
X=2 Plug X into equation Y=3(2)+2 then Y = 8 that's point (x,y) = (2,8)
get it? :D just ask me more if not ( to be fair, this is more complex than it seems)
If f (x) = 3x² - x, find f (-2).
O 10
O 14
O 38
Answer:
The value of f(-2) is equal to 14.
Step-by-step explanation:
Let's define what we are given:
f(x) = 3x² - xf(-2)Recall from function notation that f(-2) is equal to x = -2 for f(x). That means we can substitute in x = -2 into f(x):
f(-2) = 3(-2)² - (-2)From here, we can evaluate the function expression using BPEMDAS (Brackets, Parenthesis, Exponents, Multiplication, Division, Addition, and Subtraction):
f(-2) = 3(-2)² - (-2)f(-2) = 3(4) - (-2)f(-2) = 3(4) + 2f(-2) = 12 + 2f(-2) = 14∴ f(-2) = 14.
Hope this helps!
Which pair of triangles can be proven congruent by SAS?
Answer:
Second option
Step-by-step explanation:
They have two congruent pairs of sides and one congruent pair of angles.
The triangles B can be proven congruent by the SAS theorem
What are Congruent Triangles?Transformations change the size or position of shapes. Congruent shapes are identical, but may be reflected, rotated or translated. Scale factors can increase or decrease the size of a shape. Congruent Triangles simply mean the triangles that possess the same size and shape
The three sides are equal (SSS: side, side, side)
Two angles are the same and a corresponding side is the same (ASA: angle, side, angle)
Two sides are equal and the angle between the two sides is equal (SAS: side, angle, side)
A right angle, the hypotenuse and a corresponding side are equal (RHS, right angle, hypotenuse, side)
Given data ,
From the Option B) , we get
Let the first triangle be ΔABC
Let the second triangle be ΔBDE
Now , the measure of side AB = measure of side BD
And , the measure of side AC = measure of side BE
And , the measure of ∠ABC = measure of ∠DBE
Therefore , Two sides are equal and the angle between the two sides is equal (SAS: side, angle, side)
Hence , the triangles are congruent by SAS theorem
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Help me solve this please
Answer: 282.50
Step-by-step explanation: He has 305 dollars, that is below 500 so you multiply the fee he has to pay by 3. U get 22.5, after than u subtract 22.5 from 305.
An experiment consists of rolling two fair number cubes. The diagram shows the sample space of all equally likely outcomes. What is the probability of rolling two 4's? Express your answer as a fraction in simplest form.
Answer:
1/36
Step-by-step explanation:
1/6 for the inital four, one in sixth chance to continue the roll on another 6.
the likely hood of making both these (on the first try) is 1/6*1/6 = 1/36.
Four students each hike on different trails. Dave (D) hikes 3 miles more than Sue (S). Jerry (J) hikes 2 miles more than Ezra (E). Ezra hikes farther than Sue. Identify the inequality that correctly represents the distance the students hike
What is the mean of 3,0,5,0,7,4,3,10 ?
Answer:
4
Step-by-step explanation:
3+0+5+0+7+4+3+10 = 32
Mean = sum of numbers / how many numbers
mean = 32/8
mean = 4
Answer this simple equation below:
Answer:
[tex]x=\dfrac{cd}{a-b-d}[/tex]
Step-by-step explanation:
[tex]\begin{aligned}\dfrac{ax-bx}{x+c} & =d\\ \implies ax-bx & =d(x+c)\\ \implies ax-bx & =dx+cd\\ \implies ax-bx-dx& = cd\\ \implies x(a-b-d) & = cd\\ \implies x & = \dfrac{cd}{a-b-d}\end{aligned}[/tex]
Un grupo de niños juega en una plaza con una pelota. Uno de ellos lanza la pelota en forma vertical hacia arriba. La pelota describe en su trayectoria una parábola que responde a una función cuadrática, siendo el tiempo "t" la variable independiente.
1) Dibujen en un sistema de coordenadas cartesianas la posible trayectoria parabólica de la pelota (usen GeoGebra, pueden utilizar una aplicación del celular)
2) Escriban una posible expresión matemática que modelice la situación planteada. ¿Qué significado tienen, en este caso, las coordenadas del vértice? ¿Qué significan las probables intersecciones con el eje "x"? ¿Y con el eje "y"?
Answer:
Step-by-step explanation:
gpih
Which of the following numbers is a factor of 494949? Choose 1 answer: Choose 1 answer: (Choice A) A 222 (Choice B) B 444 (Choice C) C 999 (Choice D) D 77
Answer:
I thin 777 but you write it 77
Step-by-step explanation:
D
The graph below shows the height of a tunnel f(x), in feet, depending on the distance from one side of the tunnel x, in feet:
Graph of quadratic function f of x having x intercepts at ordered pairs 0, 0 and 36, 0. The vertex is at 18, 32.
Part A: What do the x-intercepts and maximum value of the graph represent? What are the intervals where the function is increasing and decreasing, and what do they represent about the distance and height? (6 points)
Part B: What is an approximate average rate of change of the graph from x = 5 to x = 15, and what does this rate represent?
Answer:
I've been looking for the same answer lmk I got it
!!!!!!!!!!!!(NO LINKS) WILL MARK BRAINLIEST!!!!!!!!!!
What is the slope of a line parallel to line B?
A) 5/3
B) -1/3
C) 5/2
D) 2/5
Answer:
c
Step-by-step explanation:
the rise(y) is 10 if you count and the run(x) is 4 slope is y/x so its 10/4 and you can simplify that to 5/2
The mean of five numbers 3,7,9,12 and x is 8. find the value of x
Answer: 23
Step-by-step explanation: 3+7+9+12+X /5 =8
31 + X = 8
X = 23
A. Rearrenge the following steps in hypothesis testing in chronological order by writing the letters from A( For the first step) to E (for the last step) on the space provided before each item.
1. Compute the test statistic
2. Compare thw computed statistic with critical value for the test statistic make a decision.
3. draw a conclusion or interpretation of the result.
4. Select the appropriate test statistic, set the significance level a, determine the critical value and what specific tailed test.
5. State the null and alternative hypothesis clearly.
Answer:
1. c
2. d
3. e
4. b
5. a
the measure of an angle is 28 degrees less than its supplement. find each angle
Supplementary angles measure 180°. Make an equation:
Subtract 28 to leave the variable in the parentheses alone:
Add the 2 x's together:
Your new equation is:
Divide both sides by 2 to leave the variable alone
The supplement measures 76°
Find the distance around the race track. use 3.1 for pi. 30m 100m
Answer:
293 m
Step-by-step explanation:
Split the figure into 3 parts :
Left semicircleCenter rectangleRight semicirclePerimeter of the left semicircle
P₁ = πrP₁ = 3.1 x 15 [half the diameter]P₁ = 46.5 mPerimeter of the right semicircle
It is the same perimeter of the left semicircle as the diameter is equalP₂ = 46.5 mPerimeter of the rectangle
Here we only need to consider the sum of the lengths of the rectangleP₃ = 2 x 100P₃ = 200Distance around the race track
P₁ + P₂ + P₃46.5 + 46.5 + 200293 mA rectangular prism with length l, width w, and height h has a volume of lwh.
What is the volume of a prism which has a base of 5 m by 3 m, and a height of 4 m?
Step-by-step explanation: 5x3x4 15x4 The volume is 60m^3.
pls help asap for 13 pls and thank u
Kara scores 3 points when she completes the first level of a video game. At each level after that she scores 3 times the amount awarded at the previous level. If she completes 4, how many points does she score in all?
Answer:
120
Step-by-step explanation:
If Kara earns 3 times as many points completing the next level than she earned the previous level, to find how many points she earned at level 3, triple the amount of points earned in level 2, which is 9.
9 × 3 = 27
We can confirm this is the correct value by multiplt 27 by 3 to see if it equals 81, which it ineed does.
To find how many points she scored in all, find the sum by adding all of the points together.
3 + 9 + 27 + 81 = 120
She scores 120 points in all.
hope this helps!
the area of the triangle below is 12.87 square inches what is the length of the base ??
Answer:
6.6 in (Brainliest please)
Step-by-step explanation:
A= 1/2 b*h
12.87= 1/2 b(3.9)
12.87= 1.95b
12.87/1.95= 1.95b/1.95
6.6=b
unit 10 circles homework 9 standard form of a circle all things algebra
1In unit 10 circles homework 9 standard form of a circle in all things' algebra, the center is (0,-2) and radius is 8 units.
What is the equation of circle?The equation of the circle is the equation which is used to represent the circle in the algebraic equation form, with the value of center point in the coordinate plane and measure of radius.
The standard form of the equation of the circle can be given as,
[tex](x-h)^2+(y-k)^2=r^2[/tex]
Here (h,k) is the center of the circle and (r) is the radius of the circle.
For the first problem,
[tex]x^2+(y+2)^2=64[/tex]
Rewrite the equation to make it the equation of circle as,
[tex](x-0)^2+(y-(-2))^2=8^2[/tex]
Compare it with equation of circle, we get center at (0,-2) and radius of 8 units. Similarly, the center and radius for each of the equation can be found out.
Thus, in unit 10 circles homework 9 standard form of a circle in all things' algebra, the center is (0,-2) and radius is 8 units.
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Todd runs 3.5 miles around the
school track. Each lap is 0.25 mile.
What equation can be used to find
how many laps around the track
Todd runs?
Hi!
We can use x to represent the number of miles that Todd runs.
He runs a total of 3.5 miles, and each lap is 0.25 miles.
Therefore:
3.5 = 0.25x
The question simply asks for an equation, so there is no need to calculate how many laps he takes.
12.38 + 3 + 4.6
?
=
✓ DONE
What is e answer?
Answer:
e=6
Step-by-step explanation:
You need to take the transactions of the lament, then vibrant connections.
help me please it will bring my grade up
Answer:
40
Step-by-step explanation:
Area = Base * height
A = 8 * 5
A = 40
Answer:
40
Step-by-step explanation:
A=b×perpendicular height
=8×5
=40
f(x) = 3x + 13; g(x) = 3x - 1
Find f(g(x)).
- help :(
Answer:
f[g(x)] = 9x + 10
Step-by-step explanation:
f[g(x)] means to replace the x of function f(x) with function g(x)
Given:
f(x) = 3x + 13g(x) = 3x - 1Therefore:
f[g(x)] = 3[g(x)] + 13
= 3(3x - 1) + 13
= 9x - 3 + 13
= 9x + 10
please help me with this
Answer:
Length: 12.39313902 cm
Width: 10.89313102 cm
Step-by-step explanation:
Check the attachment.
What is the value of x is the solution to the equation -8(x + 3) = -10x - 5?
Answer:
x = 19/2
Step-by-step explanation:
1) Distribute
-8x-24=-10x-5
2) Add 24 to both sides
-8x-24+24=-10x-5+24
3) Simplify
- Add the numbers
-8x = -10x - 5 + 24
- Add the numbers
-8x = -10x+19
4) Add 10x to both sides
-8x+10x=-10x+19+10x
5) Simplify
- Combine like terms
2x = -10x+19+10x
-Combine like terms
2x=19
6) Divide both sides by the same factor
2x/2 = 19/2
7) Simplify
- Cancel terms that are in both the numerator and denominator
x = 19/2
Classify the pair of angles. Then find the value of x
For all 4 questions pls
Answer:
4. x = 42°
5. x = 18°
6. x = 74°
7. Unknown.
Step-by-step explanation:
4. (x-5) = 38° ⇒ x = 38 + 5 ⇒ x = 43°
5. 2x + 3x = 90° ⇒ 5x = 90° ⇒ x = 18°
6. 2x + 32° = 180° ⇒ 2x = 180°- 32 ⇒ 2x = 148° ⇒ x = 74°
7. Not sure since the picture missing that angle off page.
In an AP* Stats class, 57% of students eat breakfast in the morning and 80% of students floss their teeth. Forty-six percent of students eat breakfast and also floss their teeth. What is the probability that a student from this class eats breakfast but does not floss their teeth
Answer:
The probability that a student from this class eats breakfast but does not floss their teeth is .11 (11%).
Step-by-step explanation:
Let's start by making a two-way table (you can also make a tree diagram).
Let's make the total number of students = 100. Now, fill out the table using the given probabilities from the question.
We are given that 57% of students eat breakfast in the morning, so the total in the "Eats breakfast" column is 57.
80% of the students floss their teeth, so the total in the "Flosses teeth" row is 80.
We can fill out the rest of the table using simple algebra and the fact that the probabilities must add up to 1.
I've attached a table that I created showing what the two-way table should look like when filled out completely.
Now, we want to find the probability that a student eats breakfast but does not floss their teeth.
We can look at the column "Eats breakfast" and the row "Does not floss teeth" and see that 11 (out of 100) students eat breakfast without flossing their teeth.
Therefore, the probability that a student from this class eats breakfast without flossing their teeth is .11.