Answer:
d) 123
Step-by-step explanation:
123 as,
angle CDA =57 and angle BCD = 180 - CDA (They form a linear pair)
So, BCD = 180 - 57
=> BCD = 123
Hope this helps you, mark me as brainliest please, Thank you
Find the average velocity (in m/s) of a cyclist that starts 200 meters North of town and is 1400 meters North of town after cycling for 20 minutes
Answer:
The average speed is 1 meter per second
Step-by-step explanation:
Here, we want to calculate average speed
Mathematically;
Average speed = Total distance/Total time
In this case, the total distance traveled = 1400-200 = 1,200 meters
Total time taken = 20 minutes
Since 60 seconds = 1 minute; 20 minutes is 20 * 60 = 1200 seconds
So average speed = 1200 meters/1200 seconds = 1 meter/second
Write the sentence as an inequality.
Ten is at least the product of a number h and 5.
Answer:
5h ≥ 10
Step-by-step explanation:
5 * h ≥ 10
≥ means greater than or equal to which is recognized in the question for " atleast"
write the quadratic function in the two other forms f(x)=2(x+4)(x+2)
Step-by-step explanation:
f(x) = 2(x+4)(x+2)
= 2[x² + 6x + 8]
= 2x² + 12x + 16
Please help me again
14x - 2> 20x + 10
please help!
Answer:
x < -2
Step-by-step explanation:
So if you want to find x we want to simplify the equation first:
14x - 2 > 20x + 10
We should subtract 10 on both sides first:
14x - 12 > 20x
And then subtract 14x from both sides:
- 12 > 6x
Then we want to divide 6 from both sides:
-2 > x
There ya go:
x is less than -2; x < -2
Help me please
Whats the product
Answer:
(-9)(2)= -18
Step-by-step explanation:
since there are no signs in this expression, we will multiply. always remember, a negative times a positive will always be negative. just multiply 9 and 2 and you get 18. then add a negative sign. -18
A box contains ten cards labeled J, K, L, M, N, O, P, Q and S. One card will be randomly chosen what is the probability of choosing a letter form L to Q
Answer:
you would have a 6 out of 9 chance
There are 3 triangles and 6 circles. What is the simplest ratio of circles to triangles?
Answer:
2:1
Step-by-step explanation:
Solve the equation for r. s=7r-33.
Answer: [tex]r=\frac{s+33}{7}[/tex]
Step-by-step explanation:
s = 7r -33. add 33 to both sides +33 -33 =0 ."cancels"
s + 33 = 7r divide both sides by 7 7r/7 7/7 = 1 'cancels' and leaves r
(s + 33) / 7 = r
[tex]r=\frac{s+33}{7}[/tex]
1. y varies directly as x. x = 3 when y = 12. Find y when x = 12.
Answer:
it's 36
Step-by-step explanation:
if u take 3 times 12 its 36
What is 12*6-1????????????????????????
Answer:
71
Step-by-step explanation:
10 red peppers for $5.50
Answer:1.50
Step-by-step explanation:
Answer:
Step-by-step explanation:
10 red peppers = 5.50
1 red pepper = 10 ÷ 5.50 = 1.81
Answer this: x=6
y=-2
-8x-4y+x
Answer:
-34
Step-by-step explanation:
first do substitution: -8 · 6 + -4 · -2 + 6
next do the multiplication: -48 + 8 + 6
add: -34
hope this helps!!!
Answer:
-34
Steps:
-8x - 4y + x
-8x + x = -7x (combine like terms)
-7x - 4y
-7(6) - 4(-2) (plug in the numbers)
-42 +8=
-34
:")
a)
А
3.6 cm
3.2 cm
B В
С
4.5 cm
WILL GIVE BRAINLIEST. Find the linear equations written in standard form. Select all that apply.
x + y = -1
-3x = y
x + 4y = 0
y = 5x – 2
x = 3 - 0.1y
8x - 3y = 20
Answer:
x + y = -1
x + 4y = 0
8x – 3y = 20
Step-by-step explanation:
answer on edge
Answer:
x + y = -1
x + 4y = 0
8x – 3y = 20
Step-by-step explanation:
PLEASE HELP ME ASAP!!
Answer:
36 feet
Step-by-step explanation:
SOMEONE PLSSS HELPPP
Two similar triangles are shown on the coordinate grid: A coordinate plane is shown. Triangle ABC has vertices A at negative 3 comma 2, B at negative 1 comma 0, and C at negative 2 comma negative 1. Triangle A prime B prime C prime has vertices A prime at 6 comma 4, B prime at 2 comma 0, and C prime at 4 comma negative 2. Which set of transformations has been performed on triangle ABC to form triangle A′B′C′? (4 points) a Dilation by a scale factor of 4 followed by reflection about the x-axis b Dilation by a scale factor of 2 followed by reflection about the x-axis c Dilation by a scale factor of 4 followed by reflection about the y-axis d Dilation by a scale factor of 2 followed by reflection about the y-axis
Answer:
d Dilation by a scale factor of 2 followed by reflection about the y-axis
Step-by-step explanation:
In each case, the transformation is ...
(x, y) ⇒ (-2x, 2y)
So, a dilation by a factor of 2 is involved. That is what multiplies the coordinates by 2. Reflection in the y-axis is what negates the x-coordinate.
The transformations are ...
Dilation by a scale factor of 2 followed by reflection about the y-axis
Write the equation of the line, in standard form, that has an x-intercept of 2 and is parallel to 2x + y = -5.
Answer:
y = -2x + 2
Step-by-step explanation:
I need the equation of the line, in standard form, that has an x-intercept of 2 and is parallel to 2x + y = -5.
Write the equation of the line, in standard form, that has an x-intercept of 2 and is parallel to 2x + y = -5. Include your work in your final answer.
"parallel"means "same slope".
let's find, first, the slope of the given line: rewrite the equation in standard form,
that is -
y=-2x-0.5
This means the slope of the required line is "-2"
Now, just plugin the numbers into standard equation:
y=slope*x+intercept
you'll end up with
y=-2x+2
Select two numbers which have an absolute value that is greater then the absolute value of 4-1/4
Answer:
A.) -5. E.) 6 hope I could help
How many lakhs are there in 1 crore
Answer:
. 1 Crore is equal to 100 Lakhs if wrong sorry
Step-by-step explanation:
Answer:
100 Lakhs is equal to one crore
Hope it helps!
what is the answer to 4×3^2-3+5×2
Answer:
43
Step-by-step explanation:
[tex]4 \times {3}^{2} - 3 +5 \times 2 [/tex]
4 x 9 - 3 + 5 x 2
36 - 3 + 10
46 - 3
43
Given h(x) = 4x - 5, solve for a when h(x) = 7.
Answer: h(x) = 23
Step-by-step explanation:
Plug x in the equation
h(x) = 4(7) - 5
h(x) = 28 - 5
h(x) = 23
solve y/3 +1 = 7/15
Answer:
Step-by-step explanation:
y/3 + 1 = 7/15
y/3 = 7/15 - 1
y/3 = -8/15
y = -8/15 × 3
y = -8/5
hope this helps
plz mark as brainliest!!!!!!!!!
What is the estimate of 1,578
thats the estimate
I NEED HELP PLEASE ASAP - will give brainliest!!!!!!!
28.) A number cannot have a value equal to its square.
Is this true or false? If false, give a counterexample.
Answer:
false 1 is equal to its own square
Your teacher draws a line segment on the board that connects points A and B in the coordinate plane. Using what you know about midpoints, explain how can you find the point that is 1/4 of the distance from A to B?
Answer:
The coordinates of the point, (x₂, y₂), 1/4 distance from A to B is given as follows;
[tex](x_2, \ y_2) = \left (x_1 + \dfrac{x_3 - x_1}{4}, \ y_1 + \dfrac{y_3 - y_1}{4} \right)[/tex]
Step-by-step explanation:
The steps used to find the point, P, 1/4 of the distance from A to B is as follows
Let the coordinate of the point A = (x₁, y₁) and the coordinate of the point B = (x₃, y₃)
Therefore, the coordinates of the point, P, (x₂, y₂), is given from the following relationship;
The coordinates of P 1/4 distance from A to B = (x₂, y₂) = (x₁ + (x₃ - x₁)/4, y₁ + (y₃ - y₁)/4)
Where;
x₂ = x₁ + (x₃ - x₁)/4
y₂ = y₁ + (y₃ - y₁)/4
By plugging in the values for x₁, y₁, x₃, and y₃, we can find the coordinates of the point P, 1/4 of the distance from A to B
The coordinates of P 1/4 distance from A to B = (x₂, y₂) = (x₁ + (x₃ - x₁)/4, y₁ + (y₃ - y₁)/4)
in this equation -7=7s+28 what comes first -7+-7 or is it 28+28
Answer:
-7 - 28
Step-by-step explanation:
First, you do -7 - 28 and then divide the equation by 7.
The sum of two numbers is 82. The larger number is eight less then five times the smaller number. What are the numbers?
Answer:
The smaller Number = 15
The larger number = 67
Step-by-step explanation:
Let
The smaller number = x
The larger number = 5x - 8
The sum = 82
(5x - 8) + x = 82
5x - 8 + x = 82
6x - 8 = 82
Add eight to both sides
6x - 8 + 8 = 82 + 8
6x = 90
Divide both sides by 6
x = 90/6
= 15
Therefore,
The smaller number = x = 15
The larger number = 5x - 8
= 5(15) - 8
= 75 - 8
= 67
Little help please? It would be much appreciated :D
Answer:
[tex]\frac{12ac^1^4}{b^3}[/tex]
Step-by-step explanation:
[tex]\frac{(a^{2}b^{4}c)^2 (6a^3b)(2c^5)^3}{4a^6b^1^2c^3}[/tex]
[tex]\frac{(a^4b^8c^2)(6a^3b)(8c^1^5)}{4a^6b^1^2c^3}[/tex]
[tex]\frac{48a^{7}b^9c^1^7}{4a^6b^1^2c^3}[/tex]
[tex]\frac{12ac^1^4}{b^3}[/tex]
Evaluate inverse functions
The table below shows some inputs and outputs of the invertible function f with domain all real numbers.
x. |-7|11|-13|6|5|-9|
f(x). 7|12|8|-7|13|5|
Find the following values:
f-1(F-1(13)) =
f-1(8) =
Part 1
Answer: -9---------------------------
Explanation:
Let's focus on evaluating [tex]f^{-1}(13)[/tex] first. We need to look at the table and locate f(x) = 13. So we're looking in the f(x) row where 13 shows up. That's in the second to last column. Right above that we have x = 5
This means f(5) = 13 and [tex]f^{-1}(13) = 5[/tex]. The inverse undoes the f(x) function. So the input x and output y values swap places. This is why we're reading the table in reverse.
We can replace all of [tex]f^{-1}(13)[/tex] with 5 to go from [tex]f^{-1}(f^{-1}(13))[/tex] to [tex]f^{-1}(5)[/tex]
Then we repeat the process of using the table. Locate 5 in the f(x) row. This is in the last column. The value above that is x = -9
So f(-9) = 5 and [tex]f^{-1}(5) = -9[/tex]
Overall, [tex]f^{-1}(f^{-1}(13)) = -9[/tex]
===============================================
Part 2
Answer: -13---------------------------
Explanation:
Same idea as before. Locate 8 in the f(x) row. The value above this is x = -13
This means f(-13) = 8 and [tex]f^{-1}(8) = -13[/tex]
The value of [tex]f^{-1}(f^{-1}(13))[/tex] is -9
The value of [tex]f^{-1}[/tex] (8) is 13
What is a function?A function is a relationship between inputs where each input is related to exactly one output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
From the table,
f(5) = 13
This can be written as,
[tex]f^{-1}[/tex] (13) = 5 _____(1)
f(-13) = 8
This can be written as,
[tex]f^{-1}[/tex] (8) = 13 ______(2)
f(-9) = 5
This can be written as,
[tex]f^{-1}[/tex] (5) = -9 _______(3)
Now,
[tex]f^{-1}(f^{-1}(13))[/tex]
= [tex]f^{-1}[/tex] (5) [ from (1) ]
= -9 [ from (3) ]
Now,
[tex]f^{-1}[/tex] (8) = 13 [ from (2) ]
Thus,
[tex]f^{-1}(f^{-1}(13))[/tex] = -9
[tex]f^{-1}[/tex] (8) = 13
Learn more about functions here:
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