what are the coordnates of D if E (-2,2)is the midpoint of DF and F has the coordnates of (3,5)
Answers
Hi there & welcome to brainly!
Answer:
( -7 , -1 )Step-by-step explanation:
Let the co-ordinates of D be ( x , y )
Let D ( x , y ) be ( x1 , y1 ) and F ( 3 , 5 ) be ( x2 , y2 )
Midpoint of DF = E ( -2 , 2 )
Now, finding the co-ordinates of D :
[tex]\boxed{\sf{ midpoint = (\frac{x1 + x2}{2} , \frac{y1 + y2}{2} ) }}[/tex]
⇒ [tex]\sf{ ( - 2 , 2 ) = (\frac{x + 3}{2} , \frac{y + 5}{2} )}[/tex]
Equating corresponding elements, we get :
[tex]\sf{-2 = \frac{x + 3}{2} }[/tex]
⇒ [tex]\sf{ -4 = x + 3 }[/tex]
⇒ [tex]\sf{ x + 3 = -4 }[/tex]
⇒ [tex]\sf{ x = -4 - 3}[/tex]
⇒ [tex]\sf{x = -7 }[/tex]
Again,
[tex]\sf{ 2 = \frac{y+5}{2} }[/tex]
⇒ [tex]\sf{y + 5 = 4 }[/tex]
⇒ y = 4 - 5
⇒ y = -1
Hence, The co-ordinates of D = ( -7 , -1 )
Hope I helped!
Best regards! :D
~TheAnimeGirl
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What’s the slope pls answer quick
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13. Evaluate: 7x + 4y when x=5 and y=-3
Answers
Answer:
13
Step-by-step explanation:
7x + 4y
7(5) + 4(-3)
25 -12
13
Answer:
23
Step-by-step explanation:
7*5=35
4*-3=-12
35+-12=23
The ratio of boys to girls in Ms. Seeley’s class is 12/18. Which ratio of boys to girls is equivalent?
3:4
4:9
4:6
2:4
Answers
Answer:
3.9 is the possibility of this answer as shown
What is the distance between points
(5, 5)
and
(1, 5)
on a coordinate plane?
Answers
Answer:
√[(5-1)² + (5-5)²]
√[16+0]
√(16)
+4 or -4 units
I hope this helped :D
Step-by-step explanation: for your other question
((
−
4
,
7
)
(
−
4
,
5
)
Answer:
4
Step-by-step explanation:
How do you make a graph wider
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Answer:
By saving it then editing it
Step-by-step explanation:
3.) Graph on Geogebra the linear equation y=2x, then select the correct 10 points
line: *
O Blue line
Green line
Black line
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Walter and Brian each have a CD collection. The number of CDs in Walter's collection can be represented by x. The number of CDs in Brian's collection is 3 times the number in Walter's collection. The total number of CDs in both collections is 144. What is x, the number of CDs in Walter's collection?
Answers
Answer:
36CDs
Step-by-step explanation:
The number of CDs in Walter's collection can be represented by x. The number of CDs in Brian's collection is 3 times the number in Walter's collection.
Hence, Brian's collection = 3x
The total number of CDs in both collections is 144.
We have the Equation:
x + 3x = 144
4x = 144
x = 144/4
x = 36
Therefore, the number of CDs in Walter's collection is 36 CDs
-1/3 - ( -5\12)= ??
please answer its a test
Answers
Answer:
1/12
Step-by-step explanation:
-1/3-[-5/12]=?
-1/3-*-5/12=?
-1/3+5/12=
Get the least common multiple:12
-1/3*4/4+5/12*1/1=?
-4/12+5/12=?
1/12
HELP ONLY HAVE 2 MINUTES!!!!!!!!!!!!!!!!!!!!!!
Answers
Match each fraction with its equivalent decimal number.
1.7/9
2.7/19
3.7/8
4.7/15
A.0.875
B.0.46
C.0.7
D.0.7
Answers
Answer:
below
Step-by-step explanation:
We can divide all the given fractions to find there decimal equivalents.
7 ÷ 9 = 0.77...
7 ÷ 19 = 0.368421
7 ÷ 8 = 0.875
7 / 15 = 0.466...
Now, we see that these match up;
7.9 -> C or D (It's not specific in whether the 7 repeats so if it does on your end, please choose that option)
7/19 has no equivalent option.
7/8 -> A
7/15 -> B
Best of Luck!
−a2 − (2a − 7b) + b for a = −2 and b = 3
Answers
Answer:
24
Step-by-step explanation:
Given
- a² - (2a - 7b) + b ← substitute a = - 2, b = 3 into the expression
= - (- 2)² - (2(- 2) - 7(3)) + 3
= - 4 - (- 4 - 21) + 3
= - 4 - (- 25) + 3
= - 4 + 25 + 3
= 24
Answer: 32
Steps: -(-2)2 - [ 2(-2) - 7(3) ] + 3
• Follow the PEMDAS order of operations
Calculate within parentheses [ 2(-2) - 7(3) ] : -25
= -(-2)2 - (-25) + 3
Multiply and divide (left to right): 4 - (-25) + 3
Add and subtract (left to right): 32
Plz mark brainliest:)
In triangle ABC, AB measures 25 cm and AC measures 35 cm.
The inequality
centimeters.
represents the possible third side length of the triangle, s, in
The inequality
centimeters.
J
Answers
Answer:
10, 60, 70, 120
Step-by-step explanation:
Correct on edge 2020
Answer:
10<s<60
70<p<120
Step-by-step explanation:
35-25=10
35+25=60
One step equation 21=-7
Answers
Answer:
[tex]n = - 3.[/tex]
Step-by-step explanation:
[tex]21 = - 7n \\ n = \frac{21}{ - 7} \\ n = - 3. \\ \\ [/tex]
♨Rage♨
Which of the following is a rational number?
22. 23. 24. 25
Answers
Answer:
24
Step-by-step explanation:
It can be expressed as a ratio
HURRY I’ll mark you as brainliest
P = 400n – 7,200
In the formula, P is the monthly profit and n is
the number of bicycles sold in a month. How
many bicycles must he sell to make a profit of
exactly $2,000 in a month?
Answers
Answer:
23
Step-by-step explanation:
Complete the expression in terms of P and Q so the result is -5b^2+8b-3. Drag the terms to the correct location on the expression. Not all terms will be used.
Answers
Answer:
(-5b+3)(b-1)
Step-by-step explanation:
We need to factorize the given expression
-5b^2+8b-3
-5b^2+5b+3b-3
(-5b^2+5b)+(3b-3)
factor out the common terms:
-5b(b-1)+3(b-1)
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Answer:
Q-3P
Step-by-step explanation:
edmentum told me
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Answers
Answer:
0.95
Step-by-step explanation:
3/4 = 0.75 and I guess 0.95 > 0.75
Sorry That I couldn't explain more, but i hope this helps!
Answer:
0.95 is greater than 3/4
Step-by-step explanation:
3/4 in fraction format is 0.75.
and 0.95 is greater than 0.75
If A < B, where on the number line will A appear?
A. To the right of B
B. In exactly the same location as B
C. To the left of B
Answers
Johnnie runs 4.5 km everyday to stay in shape. It takes him 30 minutes to run his route. What is his average speed per hour?
Answers
Answer:
The average speed is 9 km per hour
Step-by-step explanation:
Average speed = total distance ÷ total time
Let us use this rule to solve the question
∵ Johnnie runs 4.5 km every day
∴ The total distance = 4.5 km
∵ It takes him 30 minutes to run his route
∴ Total time = 30 minutes
→ We need to change the time to hours to find the average speed in km/h
∵ 1 hour = 60 minutes
→ Divide the time by 60 to change it from minutes to hours
∴ Total time = 30/60 = 0.5 hour
∵ Average speed = distance ÷ time
∴ Average speed = 4.5 ÷ 0.5
∴ Average speed = 9 km/h
∴ The average speed is 9 km per hour
What is 5 1/9 + 3 7/9?
Answers
Answer:
8 8/9
Step-by-step explanation:
Rewriting our equation with parts separated
=5+19+3+79
Solving the whole number parts
5+3=8
Solving the fraction parts
19+79=89
Combining the whole and fraction parts
8+89=889
Answer:
i know she already answered and the points should go to her (also good job! ) but if you want it on
exact from then it's 80/9
decimal form is : 8.8
and mixed from is : 8 8/9
3(3x + 4) – 5 = -2 what does x equal
Answers
Answer:
x=-1
Good Luck!!!
Answer:
9x+12-5=-2
9x+7=-2
9x=-2-7
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Step-by-step explanation:
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Answer:
1/15
Step-by-step explanation:
First you have to use the equation:
Y2-y1 / x2-x1
13-14 is over -3-12
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Plz answer the question it’s timed
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Answer:
[tex]y < 2 \: and \: y \leqslant - 2x - 1[/tex]
Step-by-step explanation:
The colored in area in the graph is below both graphs, therefore both equations are less than, or less than or equal to.
true or false?
All whole numbers are irrational numbers
Answers
(Basically saying true)
If g(x) = 7(4 – 2x) + 5
evaluate g (11)
Answers
Answer:e
Step-by-step explanation:e
Answer:
g(11) = 7(4-2*11) + 5 = 7*(-18)+5= -121
Step-by-step explanation:
if it helps make it braintliest please
Evaluate the expression -3(n + 7) + 5 using n=5
Answers
-3(5+7)+5
Then it’s just simple steps. Distribute the -3 by the numbers in the parentheses.
-15-21+5
The add them all
You will get -31
Answer:
-31
Step-by-step explanation:
First you distribute
(-15-21)+5
Then you add and subtract from left to right.
-36+5
-31 is your answer
please answer this for me
Answers
3x5=15 + 2x10=20
15+20=35
Find the sum of 2ab and 9ab
Answers
Answer:
11ab
Step-by-step explanation:
2ab + 9ab = 11ab
answer this asap and i will give u brainliest
Answers
Does anyone know the answer to this?
Answers
Answer:
2640
Step-by-step explanation:
Yes:No = 7:5
Total votes = 6336
So, 7x+5x = 6336
12x = 6336
x = 6336/12 = 1056/2 = 528
Number of No votes = 5*528 = 2640
