8th grade math, please help.
Answer:
The x = 102
Step-by-step explanation:
The whole angle is 180 so you have to do 180-78 to get the other angle .
Answer:
x = 102
Step-by-step explanation:
x + 78 = 180 {linear Pair}
x = 180 - 78
x = 102
Given that
R=6x+9y
Find y when x=1 and R=39
Give your answer as an improper fraction in its simplest form.
Answer:
11/3
Step-by-step explanation:
39=6+9y
39-6=9y
33=9y
33/9=y
33/9=11/3
Match the following expression 12(x-3)+18=6(x-3) with the number of solutions below.
A.One solution?
B.No solution ?
Or
C.All solution?
Answer:
One solution, which is x=0.
Step-by-step explanation:
12(x-3)+18=6(x-3)
12x-36+18=6x-18
12x-18=6x-18
12x-6x-18=-18
6x-18=-18
6x=-18+18
6x=0
x=0/6
x=0
Can someone help me with this please and thanks :)
Pls help. Free crown to first answer.
Answer:
Ummm, thanks I guess?
Step-by-step explanation:
Please select a b c or d
Answer:
a
Step-by-step explanation:
Mandy and Pete have a biased spinner numbered 1, 2, 3, 4, 5. They each want to find an estimate for the probability that the spinner will land on a 5. Mandy spins the spinner 20 times and records the number of times the spinner lands on a 5. Pete spins the spinner 200 times and records the number of times the spinner lands on a 5. Is Mandy or Pete more likely to get the better estimate? You must give a reason for your answer.
Answer:
Pete
Step-by-step explanation:
Given that:
Mandy's Estimate :
Number of spins , n = 20
Pete's Estimate:
Number of spins, n = 200
A good probability estimate is one which has narrow margin of error with a high degree of confidence. These two variables are affected by sample size.
A high sample size give a narrower margin of error and increases the confidence level probability
Based on the sample size used by each of Pete and Mandy, we can conclude that, Pete's probability estimate would be better due to its significantly higher sample size.
For which points is the x-coordinate less than -1?
Answer:
Point A
Step-by-step explanation:
Hope it help
a walking path BE in a park intersects intersects two sides of the park at their midpoints. You walk from point D to E, E to B, from B to C, and back to point D. How many yards did you walk?
Answer:
Total distance covered = 436 yards
Step-by-step explanation:
Walking path BE joins the midpoints B and E of the sides AC and AD.
By midsegment theorem,
"Line joining midpoints of two sides of a triangle is parallel and measure half of the third side"
m(BE) = [tex]\frac{1}{2}[m(CD)][/tex]
CD = 2(BE)
CD = 2(74) = 128 yd
From starting point D,
DE = 107 yd
EB = 74 yd
BC = [tex]\frac{254}{2}[/tex]
= 127 yd
CD = 128 yd
Total walking distance = DE + EB + BC + CD
= 107 + 74 + 127 + 128
= 436 yd
Total distance covered = 436 yards
Answer:
456
Step-by-step explanation:
107
74
254/2 =127
74x2=148
107+74+127+148=456
Which equation, when solved for x, is equivalent to px-r=w?
Answer:
The answer is A
Step-by-step explanation:
find the equation of the line of best fit in slope intercept form . please help
Answer:
y = (2/5)x + 3
Step-by-step explanation:
Note that the y-intercept is (0, 3) and that the line passes right through the point (5, 5). First we find the slope of this line: m = rise/run.
As we move from (0, 3) to (5, 5), we see that x increases by 5 (the run) and y increases by 2 (the rise). Thus, the slope of this line is m = 2/5.
Now we know that m = 2/5, x = 5, y = 5 and b (the y-intercept) is 3. Then our equation is y = mx + b, or y = (2/5)x + 3
Answer:
The equation is [tex]y = \frac{2}{5} x+3[/tex]
Step-by-step explanation:
The line of best fit has an x-intercept of 3, so the constant in the equation would be 3. Since one of the points on the line is (5, 5), the change in y over the change in x (the slope) is going to be [tex]\frac{5-3}{5-0}[/tex] or [tex]\frac{2}{5}[/tex]. So the line's equation is [tex]y = \frac{2}{5} x+3[/tex].
SOMEONE ANSWERS THIS ANGLE PLZ !!!!
Answer: C
Step-by-step explanation:
Answer:
60 degrees
Step-by-step explanation:
a triangle degrees altogether is 180 degrees
80+40=120
so 180-120=60
what is the value of n?
enter answer in box
Answer:
6!
Step-by-step explanation:
chord x chord = chord x chord
(5) (n+8) = (7) (n+4)
i just started plugging in numbers
(5) (6+8) = (7) (6+4)
5 x 14 = 7 x 10
70=70
prime factorisation of 28 and 35
Answer:
Prime factorization of 28 and 35 is (2 × 2 × 7) and (5 × 7) respectively. As visible, 28 and 35 have only one common prime factor i.e. 7.
Find the missing number.
330 =
22
Submit
Answer:
15
Step-by-step explanation:
Question please answer thanks if you do
Answer:
Radius = 6 ft
Diameter = 12 ft
Circumference = 37.7 ft
Step-by-step explanation:
The radius of the circle is the measurement from the center of the circle to the edge. The diagram gives us the radius, 6 ft.
Radius = 6 ft
The diameter of the circle is the measurement from the edge of the circle through the center, extending back to the edge. The diameter is equal to double the radius.
6*2=12
Diameter = 12 ft
The circumference of the circle is the distance around its edge or the perimeter of the circle. We use the below equation to solve for it:
[tex]C=\pi d[/tex] where [tex]d[/tex] is the diameter
Plug the diameter (12) into the equation
[tex]C=\pi (12)\\C=37.7[/tex]
(This answer is approximate)
Circumference = 37.7 ft
I hope this helps!
Correct answers will get brainliest
1. expand and simplify. x(2x + 3) + 5 (x - 7)
2. Solve 5 (3y - 2) = 35
3. Write 0.88 as a fraction in its simplest form
Step-by-step explanation:
1 i dont know
2.
[tex]5(3y - 2) = 35 \\ = 15y - 10 = 35 \\ = 15y = 35 + 10 = 45 \\y = \frac{45}{15} = 3[/tex]
3.
[tex] \frac{88}{100} = \frac{22}{25} [/tex]
Answer:
Step-by-step explanation:
I hope it could help u and if isn't clear then let me know ..
what is the equation for this graph?
Answer:
I don’t know I think it is 1,8 tho
Step-by-step explanation:
Sorry if it’s wrong
Answer:
y= -4x+8 or -4/1x+8
Step-by-step explanation:
8 is the slope and it is positive
Rise over run is Right 4 and down 1 so that is Plus 4 and negative 1
2) A-5=62 PLSSSS HELLPPP
Answer:
Step-by-step explanation:
a-5=62 add 5 to both sides
a=67
please find x
plz help me plz
Answer:
x=18
Step-by-step explanation:
7x+15=141
7x=141-15
7x=126
7/7=126/7
x=18
have a good day!
pls brainliest
11r-12r+15
combine like terms
Answer:
-r+15
Step-by-step explanation:
Plz need help fast will mark the brainiest
Answer:
0.0081
Step-by-step explanation:
yes bye that's the answer
Answer:
0.0081
Step-by-step explanation:
mark as BRAINLIST I
A spinner is divided into 12 equal parts. The probability of spinning an x is
How many of the parts are labeled x?
7
9
3
4
Answer:
3
Step-by-step explanation
3 x 4
Answer:
3
Step-by-step explanation:
Please Help Me!! I'll Give Brainliest to the First Person the Answers!!!!
Answer:
1) 30
2) 13
Step-by-step explanation:
I could be wrong but i counted all of the full squares in the shape
PLS HELP!! GIVING BRAINLIST!!
Fred is 4 times as old as Nathan and is also 27 years older than Nathan.
Let f be Fred's age and let n be Nathan's age.
Which system of equations represents this situation?
Answer:
f = 4n
f = n+27
Fred is 36 years old and Nathan is 9 years old.
n = 9
Step-by-step explanation:
Answer:
Step-by-step explanation:
Ooh I love these type of problems
Okay, here we go :
f = Fred and n = Nathan
f = 4n
f = n + 27
Above are the two equations (the words translated into algebra)
Now you can solve using substitution (any method works, but substitution is easiest for this problem)
4n = n + 27
3n = 27
n = 9
Since n = 9 substitute n into either equation
f = 4 * 9
f = 36
Fred is 36 and Nathan is 9
lol :)
Could someone help me with this problem?
In ΔLMN, ∠L = 55°, ∠M = 85°, find measure of ∠N.
Answer:
40 degrees
Step-by-step explanation:
the angles of a triangle add up to 180 degrees,
180 = x + 85 + 55
180 = x + 140
40 = x
A 5 KG curling rock slides along frictionless ice with a constant velocity of 10 m/s. what's the net force of the rock?
Answer:
0N
Step-by-step explanation:
Force = mass * acceleration
Given
Mass = 5kg
velocity = 19m/s
IF the velocity of the body is constant, then the acceleration will be zero.
Force = 5 * 0
Force = 0N
Hence the net force on the rock is 0N
Write the equation 3x+2y=8 in general form. SHOW YOUR WORK PLEASE
Answer:
3x+2y-8=0
Step-by-step explanation:
The equation 3x+2y=8 in general form is 3x + 2y - 8 = 0 respectively.
What is a numerical expression?A numerical expression is an algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.
We are given that the equation 3x+2y=8.
The equation of straight line is written as y = mx + c
3x+2y=8.
2y = 8 - 3x
y = 8/2 - 3/2x
y = 4 - 3x/2
Hence, the general form is 3x + 2y - 8 = 0.
To know more about an expression follow;
brainly.com/question/19876186
#SPJ2
Which is the right answer
Answer:
C
Step-by-step explanation:
