Answer:
1. k=-9
2. a=-12
Step-by-step explanation:
1. -12(k+4)=60
use distributive property
-12k-48=60
add 48 to both sides
-12k=108
divide both sides by -12
k=-9
2. 8(3a)=9(2a-4)
use distributive property
24a=18a-36
subtract 18a on both sides
6a=-36
divide both sides by 6
a=-12
The record time for running the Boston Marathon is 2.12 hours at an average speed of 12.5 miles per hour. What distance does the Boston Marathon approximately cover?
Answer:
26.5 miles.
Step-by-step explanation:
Given: Time for running Boston Marathon= 2.12 h
Speed= 12.5 mph
Distance covered in Boston Marathon
Distance covered= speed x time
Distance covered = 12.5 x 2.12=26.5 miles
∴ Distance covered in the Boston Marathon is 26.5 miles.
Answer:
26.5
Step-by-step explanation:
You have two numbers. Do you think you should add, multiply, substract, or divide..?
Multiply, 2.12 x 12.5 on paper or a calculator and you will get 26.5.
16 out of 25 dog owners prefer walks. What percentage of dog owners prefer walks?
16/25 is 64%
64% of owners prefer walks
65 + = 180 complete the steps to find the value of x
x = 115
Step-by-step explanation:
180 - 65
115
115+65 = 180
Can someone please help me in 33 and 36!!
Answer:
33. x=4
This is because 2 and 14 equal 16 which is divided by 4 to sove for x. that is why that equals 4.
36. 60 degrees
180 divided by the 3 angles a triangle has equals 60.
Answer:
33. 4x=2+14
4x= 16
4x/4= 16/4
x= 4
36. 180° = the sum
to find one angle 180/3 since they're 3 angles in a triangle
180/3= 60°
The big room measured 19 ft 10 in. by 22 ft 1 in. About how many square feet of carpet are needed to re-carpet the big room?
Answer:418 5/6
Step-by-step explanation:
First get everything into inches and multiply than divide to get it into feet and the remainder is the inches but you can have a fraction
WHAT is the scale factor of the dilation?
PLEASE HELPPp c:
Answer:
2.5
Step-by-step explanation:
We can see that the original length of RS is 2 units. The length of R'S' is 5 units.
2 * x = 5
2x = 5
x = 5/2
x = 2.5
What is the rate of change given the table?
х
у
-2
6
st
1
16
-9
O-6/5
0-5/6
O 5/6
O 6/5
Answer:
-3/6 is the slope which is -1/2
(6,0) is the X intercept
(0,3) is the Y intercept
Step-by-step explanation:
read the graph
Prove segment BD = segment CA
Answer:
it is equal because in a rectangle there is a property: opposite sides are equal so BD=CA
Step-by-step explanation: PLS MARK BRAINLIEST
Answer:
BD = CA (Corresponding Element)
Step-by-step explanation:
BAC & BDC Triangle
BAC = BDC (right angle)
BA = DC (Opposite sides are Equal)
BC (equal to both)
BAC congruent BDC under the case of (Angle Side Side)
therefore BD = CA (corresponding angle)
Plz help fast
I will mark Brainlyist
Answer:
its side angle side
Step-by-step explanation:
the sides are equal and the angle in between is the same
An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $3750 and his stock in Company B was worth $1860. The stock in Company A has decreased 24% since last year and the stock in Company B has decreased 20%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).
Plssssssss help ill give brainliesttttt
Answer: Heyy Bestie Your answer would be 22.7%
Love ya and stay sliving ❤️
Step-by-step explanation:
Question 1
(a) Using Geometry Vocabulary, describe a sequence of transformations that maps figure X onto figure Y.
(b) Write the Transformation Mapping Rule(s) for the sequence you described in part (a).
- No text entered -
Question 2
Jonny is writing a program for a video game. For one part of the game he uses the rule given below to move objects on the screen.
Showing all your work, give the output that the rule gives for the inputs.
(x, y)→(x−7.5, y+6.8)
First input: (5.3, 2.7)
Second input: (9.4, -3.9)
Question 3
Triangle ABC has its vertices at the following coordinates:
A(-5, 2) B(-3, 1) C(-1, 5)
Give the coordinates of the image triangle A'B'C' after a 90° counterclockwise rotation about the origin.
Answer: Question 1 = reflection over y axis, transformation 1 unit to the left
Step-by-step explanation:
Please someone help im giving brainliest :)
Answer:
No, they are opposite as squared is multiplication. Please give brainliest!
Find the missing side of each triangle. Round your answers to the nearest tenth if necessary. (Please Show your work)
Answer:
12.2 mi
Step-by-step explanation:
We need to use the Pythagorean theorem, we can use the equation A^2 + B^2 = C^2 then get the square root of the answer
plugging in the numbers with the equation we get the equation:
10.6^2 + 6.1^2 = c^2
then we multiple the available numbers by their exponents we get:
112.36 + 37.21 = c^2
Adding the numbers together we get:
112.36 + 37.21 = 149.57
Get the square root of 149.57 (Since the earlier equation was just everything squared) we get:
12.2298814385
Round it to the nearest tenth as directed, then we get:
12.2
The answer is 12.2 mi
___________
[tex] \: [/tex]
[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]
Step by step :x² = (10,6)² + (6,1)²
x² = 112,36 + 37,21
x² = 149,57
x = 12,22mi✔
If n(A) = 16. n( B) = 19 and n(AB) = 30. Find n(AB)
Answer:
309
Step-by-step explanation:
We have ,
n(A) = 16 n(B) = 19We know that the number of elements in Cartesian product of two sets is ,
n(AB) = n(A) * n(B) n(AB) = 16 * 19 n(AB) = 309Simplify (2x+5)(2x−5).
A) ( 4x − 25 )
B) ( 4x^2 − 10 )
C) ( 4x^2 − 25 )
D) ( 4x^2 − 20x − 25 )
Answer:
Solve For X
A) X = 6.25
B) X =
Answer:
C See below
Step-by-step explanation:
Use FOIL to find answer
First, Outer, Inner, Last
First 2x times 2x = 4x²
Outer 2x times 5 = - 10x
Inner 5 times 2x = 10x
Last 5 times 5 = - 25
so equation ends up 4x² - 10x + 10x - 25
or 4x² - 25
can you guys do 1 and 3 for me
Answer:
1) DE = 18
3) [tex]x=18[/tex]
Solve for x:
[tex]x=18[/tex]
Step-by-step explanation:
1) [tex]19-1=18[/tex]
3) [tex]2x-32+2x-23=4x-55;4x-55=17;x=18[/tex]
Tip:
DE + EF = DF = 19
IJ + JK = IK = 17
HELP !
Which product is negative?
06.(-2).(-3). 1
O-7.(-3).(-5).(-8)
-3.(-4).(-9). 0
0 -2.(-4)-8.(-1)
Answer:
it's the 0-7
Step-by-step explanation:
because all of the numbers are negative and if you have negative and positive numbers the product will just be positive
A company makes a profit of $50 per software program and $35 per video game. The company can produce at most 200 software programs and at most 300 video games per week. Total production cannot exceed 425 items per week. How many items of each kind should be produced per week in order to maximize the profit? Use linear programming to solve. Show all your work.
Answer:
200 Software programs = $10,000 profit
225 video games = $7,875 profit
12,285 divided by 525
Please add an explanation.
PLZ HELP!!!! STUCK!!!!!
There are 15 tiles in a bag. Of these, 7 are purple, 5 are black and the rest are white.
Event A = drawing a white tile on the first draw
Event B = drawing a purple tile on the second draw
If two tiles are drawn from the bag one after the other and not replaced, what is P(B|A) expressed in simplest form?
A. 1/5
B. 1/3
C. 7/15
D. 1/2
Answer: C.
Step-by-step explanation: If I am wong I am sorry !
Probability of drawing two tiles from the bag one after the other and not replaced that is P(B/A) is equals to [tex]\frac{1}{2}[/tex].
What is probability?" Probability is defined as the ratio of number of favourable outcomes to the total number of outcomes."
Formula used
Conditional probability ' P(B/A)' = P(A∩B) / P(A)
According to the question,
Total number of tiles = 15
Number of while tiles represented by 'A' = 3
Number of purple tiles represented by 'B' = 7
Number of black tiles= 5
Total number of outcomes = 15 × 14
= 210
Favourable outcome for A = 3 × 14
= 42
Favourable outcomes for A∩B = 3 × 7
= 21
Probability of A
'P(A)' = [tex]\frac{42}{210}[/tex]
Probability of A∩B
'P(A∩B)' = [tex]\frac{21}{210}[/tex]
Substitute the value in the conditional probability we get,
Probability for P(B/A) = [tex]\frac{\frac{21}{210}}{\frac{42}{210} }[/tex]
= [tex]\frac{1}{2}[/tex]
Hence, Option(D) is the correct answer.
Learn more about probability here
https://brainly.com/question/11234923
#SPJ2
watch help video
What is the slope of the line that passes through the points (-2,-5) and (-3,-6
Answer:
[tex]Slope=1.[/tex]
Step-by-step explanation:
[tex]Calculate \: the \: slope \: m \: using \: the \\ \: slope \: formula \: [/tex]
[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
[tex]with(x^1,y^1)=(-2,-5)and(x^2,y^2)=(-3,-6)[/tex]
[tex]m = \frac{ - 6 - ( - 5)}{ - 3 - ( - 2)} = \frac{ -6 + 5}{ - 3 + 2} = \frac{ - 1}{ - 1} = 1.[/tex]
[tex]Thank \: you!!![/tex]
!30 points! Which angle corresponds to angle N? (Photo attached)
A. N
B. O
C. O'
D. P'
Answer:
The answer is D. "P". hope this helps you
Answer:
I believe the answer is A
Step-by-step explanation:
Henry has 15 lawns mowed out of a total of 60 lawns what percent of the lawn so does Henry still need to mow
Answer:
45 lawns
Step-by-step explanation:
If you subtract 60-15 it will give you 45
Which of the following are equivalent to –(–5 – 7)? CHOOSE TWO. –5 + 7
5 + 7
5 – 7
–5 – 7
5 – (–7)
–5 – (–7)
Answer:
The only one I found equivalent to (–5 – 7) is (-5-7) sorry
help me please and thank u
Answer:
4
Step-by-step explanation:
On Halloween night, Mack collects x pieces of candy and then eats 7 pieces. The next day he eats 10% of his candy pieces and has 63 pieces remaining. How many pieces of candy did he collect on Halloween night?
Answer:80 or 1,071
Step-by-step explanation:
first you add 7+10=17 then you do 17x63=1,071
if its not times then the answer would b 80
does anyone know how to do this asap! with a full explanation please !!! thank you have a great day !!
Answer: i think 30 minutes
Please help!! GEOMETRY
Answer:
x = 70
Step-by-step explanation:
The 70-degree angle is a verticle angle to x, meaning, they are equal in measurements.
order the set of decimals in order from least to greatest 0.30.035 0.53 0.503
Answer:
0.30 - 0.35 - 0.503 - 0.53
Step-by-step explanation:
What is the slope of the line?
1/2
2
-1/2
-2