Answer:
[tex]4 \times a = 4a \\ c \times d = cd \\ 3c \times - 2 = - 6c \\ - 5t \times 3a = - 15at \\ 4c \times 2e = 8ce[/tex]
8 - (-3) + 33 : (-3)
Answer:
Step-by-step explanation:
8-(-3)= 8+3+33=42
what’s the answer for this question
Answer:
x = 16
m<R = 34°
Step-by-step explanation:
▪︎Its an isoceles triangle, so the two opposite angles are equal. m<S = <T.
▪︎So, you write them equal to each other and solve the linear equation to find x.
▪︎Substitute the x value into any of the angles and multiply by 2, (as they are equal) to find the sum, which is 146°.
▪︎Sum of all angles in a triangle is 180°,so
146° + m< R =180°
▪︎than minus 146° from 180°.
▪︎And you will have your answer.
Please help me with this
9514 1404 393
Answer:
Vertex: (-1, 4)
Maximum: f(-1) = 4
Increasing: (-∞, -1)
Decreasing: (-1, ∞)
Step-by-step explanation:
The equation can be written in vertex form by "completing the square."
First factor out the leading coefficient from the x-terms.
f(x) = -(x² +2x) +3
Then add the square of half the x-coefficient inside parentheses. Add the opposite of that amount outside parentheses.
f(x) = -(x² +2x +1) +3 +1
Write in vertex form.
f(x) = -(x +1)² +4 . . . . . . . compare to a(x -h)² +k
You can see that the vertex is (h, k) = (-1, 4), and that the vertical scale factor 'a' is negative. This means the vertex is the maximum and the parabola opens downward.
The function will be increasing to the left of the maximum, decreasing to its right.
__
Vertex: (-1, 4)
Maximum: f(-1) = 4
Increasing: (-∞, -1)
Decreasing: (-1, ∞)
Graph: see attached
A box has a length of 7 centimeter so,a width of 2 centimeters, and a height of 4 centimeters.The bottom layer of the box is filled with 14 unit cubes that measure one centimeter on each side.which expression represents the volume of the box in cubic centimeters
Answer:
V = (14)(4) V = 56cm³
Step-by-step explanation:
The Volume is Base times Height
We are given that the base is 7cm by 2cm.
That is 14 cm² (The cubes each have volume of 1 cm³, so the volume of that bottom row is 14cm³, technically, but ignore that for now.)
To find the volume, multiply the base times the height.
V = 14cm² × 4cm
V = 56cm³
Kelly saved 4/5% of her allowance.What is that percent expressed as a fraction and as a decimal
A pair of sneakers was purchased. When they were purchased the price decreased by 20% for a sale price of $125.00. What was the original price?
Answer:
$625
Step-by-step explanation:
to find the original divide the sale price by the decreased percentage. 125/%20(or .20)
Fatimah wants to build a one-sample z interval to
estimate the proportion of students at her school who ate
breakfast every day last week with 90% confidence. She
takes a random sample of 75 students and finds that 20
ate breakfast every day last week.
What critical value z* should Fatimah use to construct
this confidence interval?
A) z* = 1.282
B) z* = 1.645
C) z* = 1.96
D) z* = 2.576
Answer:
B: z*=1.645
Step-by-step explanation:
Khan academy step by step
Answer: z*=1.645
Step-by-step explanation:
On a number line, what is the distance between 5 and -2?
Answer:
7
Step-by-step explanation:
to get to -2 to 5 you must move up 7 spota
Answer:
7
Step-by-step explanation:
The distance between 5 and 0 is 5 units. And the distance between -2 and 0 is 2 units thus the distance between -2 and 5 is 7.
Calculate
48
×
3
8
and select the correct responses from the drop-down lists.
48
×
3
8
=
Choose...
and
Choose...
.
Answer:
on the first one its 18 and the second one its 0 eighths
Step-by-step explanation:
i did it
The question was incomplete. The question should be like below :
Calculate 48×3/8 & choose which option is correct.
The options are :
1 ) 20
2 ) 18
3 ) 24
4 ) 16
The correct option is 2) 18
What is expression ?An expression is a mathematical sentence in which more than one number or variable is present with one or more mathematical operations.
How to calculate the expression ?The given expression is 48×3/8
Now, 48×3/8
= 6×3
= 18
The 2nd option is correct.
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how to calculate the quotient of 286 and 11
Answer:
Answer: (286/11) ÷ 2 = 13
Step-by-step explanation:
The quotient of 286 and 11 is given by the equation A = 26
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the first number be represented as x
Now , the value of x = 286
Let the second number be represented as y
The value of y = 11
Let the quotient be represented as A
The value of A is given by the equation ,
A = x/y
Substituting the values in the equation , we get
A = 286/11
The value of A = 26
Therefore , the value of A is 26
Hence , the equation is A = 26
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For Kristina’s birthday, her parents purchased 16 balloons from an online party store. The cost for each balloon was the same. The store also charged an $8.00 shipping fee. The total amount that Kristina’s parents paid was $56.
Write an equation to model the situation. Use x to represent the cost of each balloon.
Solve your equation from part A to find out the cost of each balloon.
Answer:
56÷x+8
Step-by-step explanation:
Flavor
Number of
People
Chocolate
165
Vanilla
135
5. The results of a survey asking 500 people
about their favorite ice cream flavor are
shown in the table.
Assuming that there is no real preference
between these 5 flavors, for which of these
flavors does the experimental probability
differ the most from the theoretical
probability?
A. Chocolate C. Vanilla
B. Mint Chip D. Banana
70
Strawberry
Mint Chip
Banana
100
30
Answer:
D. Banana
Step-by-step explanation:
c+11=24
please help!!
Answer:
13
Step-by-step explanation:
Answer:
c=13
Step-by-step explanation:
Hey There!
c+11=24
When looking at this problem you want to get the variable on one side (c) and the constant on the other ( any whole number)
as you can see we need to get rid of the 11 on the left side
to do that we subtract 11 but whatever you do to one side you have to do to the other side
11-11 cancels out
24-11=13
so we can conclude that
c=13
(b) Find the lowest common multiple (LCM) of 450 and 315.
Answer:
The LCM of 315 and 450 is 3150. Hope this helps :)
Step-by-step explanation:
1. An observer 80 ft above the surface of the water measures an angle of depression of 0.7o to a distant ship. How many miles is the ship from the base of the lighthouse? (5280 ft = 1 mile)
Commercial airliners fly at an altitude of about 10 km. They start descending toward the airport when they are far away, so that they will not have to dive at a steep angle.
2 a) If the pilot wants the plane's path to make an angle of 3o with the ground, at what horizontal distance must the plane start descending?
b) If the pilot starts descending a ground distance of 300 km from the airport, what angle will the plane's path make with the horizontal?
3. A submarine at the surface of the ocean makes an emergency dive, making an angle of 21o with the surface. If it travels for 300 m along a downward path, how deep will it be?
Answer:
1. The distance of the ship from the base of the lighthouse is approximately 1.24 miles
2. a)The horizontal distance the plane must start descending is approximately 190.81 km
b) The angle the plane's path will make with the horizontal is approximately 18.835°
3. The depth of the submarine is approximately 107.51 m
Step-by-step explanation:
The
1. From the question, we have;
The height of the observer above the water = 80 ft.
The angle of depression of the ship from the observer, θ = 0.7°
Let the position of the observer be 'O', let the location of the ship be 'S', let the point directly above the ship at the level of the observer be 'H', we have;
[tex]tan(\theta) = \dfrac{Opposite \ leg \ length}{Adjacent \ leg \ length} = \dfrac{HS}{OH}[/tex]
[tex]The \ horizontal \ distance \ of \ the \ ship, OH = \dfrac{HS}{tan(\theta) }[/tex]
HS = The height of the observer = 80 ft.
Therefore, we get;
[tex]The \ horizontal \ distance \ of \ the \ ship, OH = \dfrac{80 \, ft.}{tan(0.7^{\circ}) } \approx 6,547.763 \ ft.[/tex]
The distance of the ship from the base of the lighthouse ≈ 6,547.763 ft. ≈ 1.24 miles
2. The elevation of the plane, h = 10 km
The angle of the planes path with the ground, θ = 3°
Similar to question (1) above, the horizontal distance the plane must start descending, d = t/(tan(θ))
∴ d = 10 km/(tan(3°)) ≈ 190.81 km
The horizontal distance the plane must start descending, d = 190.81 km
b) If the pilot start descending 300 km from the airport, the angle the plane's path will make with the horizontal, θ, will be given as follows;
From trigonometry, we have;
[tex]tan(\theta) = \dfrac{Opposite \ leg \ length}{Adjacent \ leg \ length}[/tex]
Where the opposite leg length = The elevation of the plane = 10 km
The adjacent leg length = The horizontal distance from the airport = 300 km
[tex]\therefore tan(\theta) = \dfrac{10 \, km}{300 \, km} = \dfrac{1}{3}[/tex]
[tex]\theta = arctan\left(\dfrac{1}{3} \right ) \approx 18.835^{\circ}[/tex]
The angle the plane's path will make with the horizontal, θ ≈ 18.835°
3. The angle at which the submarine makes the deep dive, θ = 21°
The distance the submarine travels along the inclined downward path, R = 300 m
By trigonometric ratios, we have;
The depth, of the submarine, 'd' is given as follows;
[tex]si(\theta)= \dfrac{Opposite \ leg \ length}{Hypotenuse \ length} = \dfrac{d}{R}[/tex]
∴ d = R × sin(θ)
d = 300 m × sin(21°) ≈ 107.51 m
The depth of the submarine ≈ 107.51 m
WILL MARK BRAINLIST FOR THE CORRECT ANSWER!!
The figure shown is formed by a square of area 4 and a semicircle. Find the perimeter of the figure.
A) π + 6
B) π + 8
C) 2π + 4
D) 2π + 6
Answer:
answer is A
Step-by-step explanation:
3*2=6
2pi/2=pi
The perimeter of the given figure is equivalent to (6 + π) units
What is Perimeter?Perimeter is defined as the length of the boundary of the given figure. We can write the perimeter mathematically as -
P = ∫f(x) dx
Given is to find the perimeter of the given image as shown.
We can write the area of the square as -
a² = 4
a = √4
a = 2
Also,
The perimeter of the semicircular part is -
1/2 x 2π x 2/2
π
So, the perimeter would be -
P = 2 + 2 + 2 + π
P = 6 + π
Therefore, the perimeter of the given figure is equivalent to (6 + π) units.
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If F(x) = 2x +4, which of the following is the inverse of F(x)?
x4)
A. F'(x) = 7(x+4)
O B. F'(x) = 2(x+
C. F"(x) = 2(x == 4)
D. F'(x) = 7(x-4)
I need help pls help me with this i still dont know how to do it
Answer: u multiply them all together
Step-by-step explanation:nugggybi8ybggg8yiubgy8iibgu777777777b8u
7. The daily cost of production in a video game factory is calculated using c(x) = 400 + 25x, where x is
the number of complete video games manufactured. Which set of numbers best defines the domain of c(x)?
(1) integers
(2)positive real numbers
(3) positive rational numbers
(4)whole numbers
Answer:
(4) whole numbersStep-by-step explanation:
Given function:
c(x) = 400 + 25xwhere x is the number of complete video games.The complete video games can be expressed as positive integers or whole numbers, so the domain is whole numbers.
Correct choice is (4)
Answer:
Whole Number
Explanation:
Domain : The set of all the input values (i.e. the value of x ) in the function is called domain
The daily cost of production in a video game factory is calculated using c(x) = 400 + 25x
Cost expression : C(x) = 400 + 25x
Cost expression : C(x) = 400 + 25x
As x defines the number of complete video, since number of video cannot be negative.
1) Integers : integers are the numbers which can be positive, negative or zero, but cannot be a fraction
As, number of videos cannot be negative
so, x cannot be any integers
So, Integers is not the domain
2) Positive real numbers : Real numbers are the numbers which include both rational and irrational numbers.
As the x represent the complete number of video games, thus, x cannot be irrational
Hence, Positive real numbers is not the domain
3) Positive Rational Number : a number is expressed in the form of p/q then it is a rational number
The number of videos are in the complete number, so a fraction cannot be a complete number, thus, rational number cannot be a domain.
4) Whole Number : Whole numbers include natural numbers that begin from 1 onwards
As Numbers of videos are the complete number, and they are always positive, which is the defination of whole number, Domain is whole number
what is the answer please i need help
Answer:
Step-by-step explanation:
Triangle LMN is given. What is the value of cos(N)?
A) 4/5
B) 3/5
C) 3/4
D) 4/3
Solve: negative 1 over 2 x + 3 = −x + 7
Answer:
Assuming what you meant was [tex]\frac{1}{2}x + 3 = -x +7[/tex], the answer would be x = 8
Katelyn drove 210 miles in 3 hours. Samantha
drove 540 miles in 8 hours,
Who drove faster? Explain your answer.
please help it’s for 21 points
Answer:
katelyn
Step-by-step explanation:
you divide distance by time to get rate, and katelyn has a faster rate because 210/3 is more than 540/8
Answer:
Katelyn drove faster
t=d/s
s=d/t
d=s*t
Step-by-step explanation:
s=d/t is what we are using to find the speed
Katelyn- 210/3=70
Samantha-540/8=67.5
70>67.5
Katelyn drove faster
What is 1390000000 in scientific notation?
Answer:
139 e7
Step-by-step explanation:
I'm not good at scientific notation but I think I'm getting better....
Answer:
1.39 x 10^9
Step-by-step explanation:
What is the value of 18 − 3k + 9 when k = 4?
pls help!!
Answer:
15 I think. not fully shore though
Step-by-step explanation:
Multiply 3x4. then 18-12=6. lastly add 9
Answer:
15
it is given that. k= 4
so, putting the value of k. in
given equation = 18 - (3*4 ) + 9
18 - 12 + 9 = 15
hope it helps
What's 5m²+5m+9m+8m²-m²= plss
Answer:
12m^2+14m
Step-by-step explanation:
The "^means exponet" Hope I made your day
:)
2x+7=27 i need help nolie .
Answer:
x=10
Step-by-step explanation:
2 x 10 = 20+7=27 therefore x=10
Answer:
x=10
Step-by-step explanation:
2x+7=27
2x=27-7
2x=20
2x/2=20/2
x=10
what is the answer to 15-2x=-7x= solve for x
Answer:
-3 is what I got
Step-by-step explanation:
SWYK 16: Slope and Y-Intercept
The equation y = 10x + 15 represents a gym that charges. What is the slope and y-intercept?
Assume all angles are right angles
Answer:
360 square meters.
Step-by-step explanation:
You can split the polygon into three rectangles. Then you just have to figure out the area of each rectangle and add them together. The first rectangle has length of 12 and height of 10 so area of 120. The second rectangle has length of 32 and height of 6 so area of 192. The third rectangle has length of 8 and height of 6 so are of 48. 120 + 192 + 48 = 360