Answer:
8100 square feet
Step-by-step explanation:
Work out 1 3/4 x 4 1/6
In a group of 27 pupils, 7 play the flute only.
5 play the piano only.
10 play both instruments.
A student is chosen at random.
What is the probability the student plays neither instrument?
Answer:
5/27
Step-by-step explanation:
I wrote it as a fraction, but the explanation is, if you're finding out how many who don't play instruments, you first need to find out who many do play instruments, so you add the numbers together.
10+5+7 = 22
So the probability that you'll pick one who does play an instrument would be 22/27 (because 22 out of the 27 pupils play an instrument.) But remember that's not what it's asking us for.
You have to subtract 27 - 22 to get the pupils who don't play instruments, you get 5, so the probability is 5/27 (5 pupils out of 27 don't play instruments.)
To put this in a percent, just divide the top number by the bottom number and move the decimal 2 places over, you get 18.5% or 19% both answers are correct depending on rounding.
Line m contains the points (−3, 2) and (5 , 1). Line n contains the points (2 , 7) and (1, −1) . Which statement is TRUE about lines m and n?
A. The lines are parallel.
B. The lines are coincident.
C. Both lines intersect but are neither parallel nor perpendicular.
D. The lines are perpendicular.
9514 1404 393
Answer:
D. The lines are perpendicular
Step-by-step explanation:
The first line has a rise of (1-2) = -1 for a run of (5-(-3)) = 8.
The second line has a rise of (-1-7) = -8 for a run of (1-2) = -1.
Then the slopes are -1/8 and -8/-1 = 8, which are negative reciprocals of each other. Lines with slopes having that relationship are perpendicular.
What is the constant of proportionality of the number of calories to the number of minutes?. Single choice.
2 1/2
2 1/2
3/2
Answer:
the 3 one
Step-by-step explanation:
How many solutions does the system have?
x + 4y = 6
2x + 8y = 12
Answer:
none :)
Step-by-step explanation:
help plz i need it very much
The only triangle with the base being bisected perpendicularly is an isosceles triangle or an equilateral triangle. Therefore, [tex]KJ = KL[/tex]
[tex]KJ = 4x + 9\\KL = 11x - 61\\[/tex]
Since the sides are equal, we can equate the expressions to get the equation:
[tex]4x + 9 = 11x - 61\\11x - 4x = 70\\x = 10[/tex]
[tex]x[/tex] is equal to [tex]10[/tex].
Plug that in [tex]11x - 61[/tex] and you get [tex]110 - 61[/tex] which is [tex]49[/tex]. So, Option B is correct :D
40) Start at -2. Add 12. My answer is 10
Did I do that correctly is the answer correct
Yes that is correct
Kugvuykvyukykvuuyvkkyvu
Will give brainlist! I need help
Answer:
A=1/2bh
A=1/2(2)(4)
A=1/2(8)
A=4
Step-by-step explanation:
Area is 4units²
On the Guardian lines a and B
Answer:
2 and - 1
Step-by-step explanation:
Calculate the gradients using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 2, -3) and (x₂, y₂ ) = (3, 7) ← 2 points on line A
[tex]m_{A}[/tex] = [tex]\frac{7+3}{3+2}[/tex] = [tex]\frac{10}{5}[/tex] = 2
with (x₁, y₁ ) = (- 2, 7) and (x₂, y₂ ) = (7, - 2) ← 2 points on line B
[tex]m_{B}[/tex] = [tex]\frac{-2-7}{7+2}[/tex] = [tex]\frac{-9}{9}[/tex] = - 1
If l is parallel to m, solve for x and y.
Answer:
Step-by-step explanation:
3x + 49 = 7x - 23
4x = 72
x = 18
11y - 1 = 3(18)
11y = 55
y = 5
The value of x is 18 and y is 5.
What are the properties of parallel lines?Following are the properties of parallel lines,
The pairs of vertically opposite angles are equal.The pairs of corresponding angles are equal.The pairs of alternate exterior angles are equal.The pairs of alternate interior angles are equal.Given:
<1 = 7y -23
<2 = 11y -1
<3 = 3x
Using corresponding angle
7x - 23 = 3x + 49
4x = 72
x = 18
again, Using corresponding angle
3x = 11y - 1
3(18) = 11y - 1
11y = 55
y= 5
Hence, the value of x is 18 and y is 5.
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Evaluate |x + y|, for x = 8 and y = -15.
23
7
-7
-23
Answer:
the answer is 7... ....
Answer:
Today : Saturday, 07 November 2020
Hour: 14.34 WIB (Indonesia)
_______________________________
|x + y|
= |8 + (-15)|
= |-7|
= 7 {Option B}
A bottle of hand lotion is on sale for $2.25. If this price represents a 50% discount from the original price,what is the original price to the nearest percent?
Step-by-step explanation:
50% is basically half. So if you double the price ($2.25) x 2 you will have your answer.
So the answer is $4.50..!
What is the equation of the line with a y-intercept of -10 and a slope of 3?
A.y = -102 - 3
B.y=-10x +3
C.y= 3x - 10
D.y= 3a + 10
Answer:
c
Step-by-step explanation:
slope is 3 and y intercept is -10 so y=3-10
find the domain and range for the following relation.
{(-3,-7),(-1,-3),(0,-1),(2,3),(4,7)}
what is the unit rate of y = -7x
Answer:
try math-way
Step-by-step explanation:
You are given a line that has a slope of 4 and passes through the point (StartFraction 3 Over 8 EndFraction, one-half). Which statements about the equation of the line are true? Check all that apply.
The y-intercept is -1.
The slope-intercept equation is y = 4 x minus 1.
The point-slope equation is y minus StartFraction 3 Over 8 EndFraction = 4 (x minus one-half).
The Point (StartFraction 3 Over 8 EndFraction, one-half) corresponds to (x1, y1) in the point-slope form of the equation.
Answer:
a,b,d
Step-by-step explanation:
Answer:
a,b,d
Step-by-step explanation:
Please help me:(:(:(:(
Answer:
1. 30/14
2. -26.775
3. 0.1668
4. -44/7 which can be simplified into -6 and -2/7
5. $10.96
If the domain for
f (x) = 3x + 2 is
{-2,4,7}
What is the range?
Answer:
{8,14,-19}=R
..................
-3-(0.5) on a number line
Answer:
-3.5
Step-by-step explanation:
mark on the left side of the number line where -3.5 is.
At the end of a snow storm, Allison saw there was a lot of snow on her front lawn. The temperature increased and the snow began to melt at a steady rate. There was a depth of 20 inches of snow on the lawn when the storm ended and then it started melting at a rate of 1.25 inches per hour. Write an equation for S , S, in terms of t , t, representing the depth of snow on Allison's lawn, in inches, t t hours after the snow stopped falling.
Answer:
S=20-1.25t
Step-by-step explanation:
I got this answer welcome.
The equation for depth of snow after t hours is, S = 20 - 1.25 t.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
Given that,
The initial depth of snow = 20 inches,
Rate of melting = 1.25 inches per hour.
After t hours, the snow melt = 1.25 t
The equation of the S in terms of t can be written as,
S= 20 - 1.25 t.
The required equation is S = 20 - 1.25 t.
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I have a simple question please answer it correctly its 10pts and brainiest. :)
If f(x) = 2x + 1, what is f(x) when x = 3?
a)1
b)7
c)13
d)19
Answer:
7
Step-by-step explanation:
part B is the correct answer
Answer:
B) 7
Step-by-step explanation:
f(x)=2(3)+1
2(3)=6
6+1=7
A balloon rises vertically from point p on level ground. From point a, on level ground 28ft from point p, the angle of elevation to the balloon is 79\deg . How high is the balloon?
Answer: Balloon is 27.5 ft high.
Step-by-step explanation:
As per the give , we made a diagram (in attachment).
To find the vertical distance from the growth we consider entire triangle as right triangle , where height is making right angle with ground.
in right triangle,
[tex]\sin \theta=\dfrac{Hypoteuse}{height}\\\\\Rightarrow\ \sin 79^{\circ}=\dfrac{28}{height}\\\\\Rightarrow\ 0.98162718344=\dfrac{28}{height}\\\\\Rightarrow\ height = 0.98162718344\times28\\\\\Rightarrow\ height = 0.98162718344\times28\approx27.5[/tex]
hence, balloon is 27.5 ft high.
If you reflect the coordinates (1,4) across the x-axis what would be the new
coordinates? *
Answer:
(1, -4)
Step-by-step explanation:
Flipping it across the x axis would only change the y value since it would only affect the verticality.
The y value was originally positive so now it just simply becomes negative.
(1, 4) ->(1, -4)
Hope this helps! If you have any questions on how I got my answer feel free to ask. Stay safe!
Kelvin rolls a dice twice. The first number he gets is 4. The sum of the two numbers is smaller than 8. Which number CANNOT be the second number?
Answer:
5, 6
Step-by-step explanation:
When Kelvin rolls the dice twice, he can't get more than a 4 because if he did, the sum of the two numbers would be more than a 8. So, the numbers that cannot be the second number is 5 and 6.
HELPPPPPPP ASAPPP
Tim bought a box of chocolates for $ 650 and sold it to Tom at a profit of $ 75. Find the selling price.
Answer:
725$ give brainliest ;)
Step-by-step explanation:
please help omg i have a 15 percent in math for my overall grade and i also have bad grades in spanish and ELA but please please just help me if i could get someone’s snap or idk so i could send u photos of my work that would literally be great i also have to get my grade up BY THIS MONDAY HELP
Answer:If you’re doing edge I can give you tips.
Step-by-step explanation:
Answer:
what do u need help with
Step-by-step explanation:
calm down! its gonna be all good
Identify the parent function.
Answer: D) Absolute Value
Step-by-step explanation:
From the graph, we can see that the function is the absolute value.
From the graph, we need to identify the type of parent function.
What is parent function?In mathematics, a parent function is the simplest function of a family of functions that preserves the definition (or shape) of the entire family.
From the graph, we can see that the function is the absolute value.
An axis of symmetry of the graph of a function is a vertical line that divides the graph into mirror images. An absolute value graph has one axis of symmetry that passes through the vertex. The absolute value function is defined by f (x) = |x|. This is the absolute value parent function.
Therefore, from the graph, we can see that the function is the absolute value
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Find the value of the variable. Round the answer to the nearest tenth when needed.
A 6
B. 6.7
C. 16.2
D. 22.5
Solve for x I need help ASAP!
Let's solve your equation step-by-step.
2x+9=8x+21
Step 1: Subtract 8x from both sides.
2x+9−8x=8x+21−8x
−6x+9=21
Step 2: Subtract 9 from both sides.
−6x+9−9=21−9
−6x=12
Step 3: Divide both sides by -6.
-6x/-6=12/-6
x=-2
Answer:
-2 = x
Step-by-step explanation:
First, combine like-terms. I subtracted 21 from both sides and subtracted 2x from both sides. This gave us 12 = -6x. Then, divide to solve for x. This gives us -2 = x.
Hope this helps! Let me know!
