Answer:
462
Step-by-step explanation:
Sum = n/2 x (a + Tn)
= 21/2 x (2 + 42)
= (21 x 44)/ 2
= 924/2
2 + 4 + 6 + 8 + 10 + 12 + . . . . + 42 = 462
Data Set A has a mean of 215 and a standard deviation of 35. Data Set B has a mean of 400 and a standard deviation of 12.
Which data set is more spread out?
Answer:
Data set A
Step-by-step explanation:
Data set A is the one that is more spread out.
The mean is the same as the average of a given sample. It is usually a measure of the central tendency of a data set.
Standard deviation is a measure of the spread of a given set of data.
The lower the value of the standard deviation, the more clustered around the mean a data is. Data is spread out if it has a higher value of standard deviation.Since data set A has a standard deviation of 35, it the most spread out.
Thank neeed help thanks
Answer:
72 degrees
Step-by-step explanation:
hi! the total angle measure of a triangle is 180 degrees. so, all three angle measures must add up to 180.
6x+6x+8x=180
20x=180
x=9
now, plug in x=9 for angle ABC.
8(9)= 72
m<ABC= 72 degrees
A coordinate plane with 4 lines. The first line is labeled a(x) and passes through (2, negative 4) and (0, 2) and continues past (negative 1, 5). The second line is labeled f(x) and passes through (negative 6, negative 6), (negative 3, 0), and (0, 6). The third line is labeled g(x) and passes through (negative 2, negative 7), (0, negative 3), (1, negative 1) and (2, 1). The fourth line is labeled h(x) and passes through (negative 6, negative 6), (0, negative 3), and (6, 0). When Janelle woke up, it was –3 degrees Fahrenheit outside. As the morning progressed, the temperature rose 2 degrees every hour. Which line on the graph could represent this scenario? a(x) f(x) g(x) h(x)
Answer:
the answer is g(x)
Step-by-step explanation:
Answer:
G(x)
Step-by-step explanation:
I just did the assignment.
work out 7 x 10 to the power of five /2 x 10 to the power of 2
Answer: 3500
Step-by-step explanation:
7 x 10 to the 5th power = 700000
2 x 10 squared = 200
700000/200 = 3500
Answer:
4201750
Step-by-step explanation:
7*10^5/2*10^2
7*10=70
2*10=20
70^5/20^2
70^5 =1680700000
20^2=400
1680700000/400=4201750
Can someone help me solve all of these problems? It’s proportions. (Will give brainliest and a heart)
HELP ME PLEAAASEEEEEEEEE
YEA ITS ME AGAIN I NEED HELP
Answer:
B. 4/3 hours
Step-by-step explanation:
because in smart
[3b+9]-16=-52
i just want to see if i got the correct answer my answer was
b=-15
Answer:
yes, the answer is b = -15
Step-by-step explanation:
3(-15) = -45
-45 + 9 = -36
-36 - 16 = -52
so b = -15
7 (2x - 9) = 6x – 15
what is this?
Directions: Multiply, divide, and simplify the following exponential expressions.
Pls help
Which is equivalent to 103/4x
Step-by-step explanation:
There can be more than one:
Here are some:
206/8x
515/20x
1030/40x
help needed please:)
Answer:
I'll help with whatever it is.
Step-by-step explanation:
I'll try my best, just let me know.
(X-7)(3x+2) need answer!!
Answer: the answer is
=3[tex]x^{2}[/tex]−19x−14
Step-by-step explanation: (x−7)(3x+2)
=(x+−7)(3x+2)
=(x)(3x)+(x)(2)+(−7)(3x)+(−7)(2)
=3x2+2x−21x−14
=3x2−19x−14
One of the dog treats in Shelley’s shop is 8 inches long and 3.2 inches wide. She wants to make a miniature version that has proportional dimensions. If the miniature treat will be 3 inches long, how wide should it be?
1.2 inches
1.8 inches
2.3 inches
3.2 inches
Answer:
A - 1.2
Step-by-step explanation:
what is 14/16 + 1/5
Answer:
27/40
Step-by-step explanation:
1
Simplify —
5
Equation at the end of step
1
:
14 1
—— - —
16 5
STEP
2
:
7
Simplify —
8
Equation at the end of step
2
:
7 1
— - —
8 5
and then round the denominator up to 40
multiply 5 times 7 now
multiply 8 times 1
35/40-8/40=27/40
Find the equation of the line shown.
Given : A graph of linear equationis given to us.
To Find : The equation of the line .
Solution : Here we can see that the line passes through points ( 1 , 2 ) and ( 2 , 4). So , clearly here we can use Two - point form to find the equation of the line .
So , first point will be , ( 1 , 2 ) & second point will be ( 2 , 4 ) . So here ;
[tex]\sf x_1 = 1\: \& \:y_1 = 2[/tex][tex]\sf x_2 = 2\: \&\: y_2=4[/tex]Now , the two point form formula is :
[tex]\Large\boxed{\red{\sf \purple{\mapsto} y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)}}[/tex]
[tex]\tt:\implies y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1) [/tex]
[tex]\tt:\implies y-2=\dfrac{4-2}{2-1}(x-1) [/tex]
[tex]\tt:\implies y-2 = \dfrac{2}{1}(x-1) [/tex]
[tex]\tt:\implies y-2=2(x-1)[/tex]
[tex]\tt:\implies y -2 = 2x - 2 [/tex]
[tex]\underline{\boxed{\purple{\tt\longmapsto 2x - y = 0}}}[/tex]
Select the correct answer.
What is the justification for step 2 in the solution process?
12y − 40 − 4y = 6y − 18
Step 1: 8y − 40 = 6y − 18
Step 2: 2y − 40 = -18
A.
the subtraction property of equality
B.
the division property of equality
C.
the addition property of equality
D.
the multiplication property of equality
Answer:A.
the subtraction property of equality
Step-by-step explanation:
Can someone help on my homework I'll give you all of my respect
Answer:
x=-11/2
Step-by-step explanation:
How do I write an equation in point-slope form for m=-3 (-2,-1) ?
Answer:
y + 1 = -3(x + 2)
Step-by-step explanation:
Point-slope form is y - y1 = m(x - x1)
m= -3 (-2, -1)
Plug -3 in for the m in the equation, -2 in for x1, and -1 in for y1
y - (-1) = -3(x - (-2))
Subtracting negatives will make them positive
y + 1 = -3(x + 2)
This is the point-slope form, continuing to solve for y will give the y-intercept form.
Y-intercept Form:
y = -3x - 7
A square has a perimeter of 12x + 52 units. Which expression represents the side length of the square in units
x + 4
x + 4
3x + 13
3x + 43
Answer:
Step-by-step explanation:
En la casa de Juan, van a pedir pizza para la comida, pero cuando la van a pedir se dan cuenta que deben pedirla por perímetro o área de la misma. La mamá dice que es más grande la de perímetro de 100cm y el papá dice que es más la de área de 100cm². ¿Cuál tiene la razón? *
Responder:
La pizza con un perímetro de 100 cm es más grande ¿verdad?
Explicación paso a paso:
Deja que la pizza tenga forma circular.
Sea el área de la pizza = πd² / 4 y;
Perímetro de la pizza = πd
d es el diámetro de la pizza
Si la madre dice que el que tiene un perímetro de 100 cm es más grande, para estar seguros necesitamos obtener el diámetro de la pizza. La de mayor diámetro será la pizza más grande.
P = 100cm
100 = πd
d = 100 / π
d = 100 / 3,14
d = 31,85 cm
El diámetro de la pizza mamá es de 31,85 cm.
Si el padre dice que el que tiene un área de 100 cm² es más grande, obtengamos también el diámetro para estar seguros.
A = πd² / 4
100 = πd² / 4
400 = πd²
d² = 400 / π
d² = 400 / 3,14
d² = 127,39
d = √127,39
d = 11,29 cm
Por lo tanto, el diámetro de la pizza padre es de 11,29 cm.
Dado que el diámetro de la pizza madre es mayor que el de esa, la pizza con un perímetro de 100 cm es más grande, lo que demuestra que la madre tiene razón.
Find value of -2/3y-3/4=5
Answer:
-8.625
Step-by-step explanation:
-8 5/8
PLZ HELP!!!!! DUE TODAY! 50 POINTS & BRAINLIEST FOR SOMEONE WHO CAN EXPLAIN TO ME WHAT I DID WRONG!!!!!!
p.s. thank you in advance!
Answer:
all angles are congruent, the smaller is just a dilation, but the angles are all congruent
Step-by-step explanation:
Answer:
see below
Step-by-step explanation:
Yes.
all the internal angles on both similar triangle are congruent.
Write in your notebook each of the following rational numbers in decimal form:
a) -20/50
b) -30/12
c) 1/8
d) -3/2
I help me
Answer:
a) -0.4
b) 2.5
c) 0.125
d) 1.5
Step-by-step explanation:
Round each mixed number to the nearest whole number. Then, estimate the sum.
141 +31
Answer:
172
Step-by-step explanation:
It is already a whole number so you just add.
A line contains the points
( - 2, – 8) and (3,5).
What is the slope of the line?
Wilson paints 40% of a bookcase in 20 minutes.
How much more time will it take him to finish the bookcase?
Answer:
30 minutes
Step-by-step explanation:
The percentage rises up by 40% every 20 minutes and if we divide that in half he paints 20% in 10 minutes. Wilson needs to paint 60% more of the bookcase. 40% plus 20% is 60%. So we just add 20 with 10 to get 30 minutes.
Need help asap!
Given that m
HURRY FAST I NEED HELP ASAPThe linear function that is represented by which table has the same slope as the graph? On a coordinate plane, a line goes through points (0, negative 3) and (2, 1). A 2-column table with 5 rows. Column 1 is labeled x with entries negative 25, negative 21, negative 17, negative 13, negative 9. Column 2 is labeled y with entries negative 9, negative 7, negative 5, negative 3, negative 1. A 2-column table with 5 rows. Column 1 is labeled x with entries negative 25, negative 21, negative 17, negative 13, negative 9. Column 2 is labeled y with entries 9, 7, 5, 3, 1. A 2-column table with 5 rows. Column 1 is labeled x with entries negative 9, negative 7, negative 5, negative 3, negative 1. Column 2 is labeled y with entries negative 25, negative 21, negative 17, negative 13, negative 9. A 2-column table with 5 rows. Column 1 is labeled x with entries 1, 3, 5, 7, 9. Column 2 is labeled y with entries negative 9, negative 13, negative 17, negative 21, negative 25.
All perfect squares are divisible by 2.
A.) true
B.) False, counterexample of 16
C.) False, counterexample of 15
D.) False, counterexample of 25
Answer:
the correct answer is C
Step-by-step explanation:
because the square root of 15 is 3.8 and 3.8 isnt divisible by 2
Increase £120 by 12.5 percent
Answer: 135
Step-by-step explanation: 12.5 percent of 120 is 15, so just add that to 120
Answer:
£135
Step-by-step explanation:
12.5%*120.00=15
120.00+15=135.00
answer= £135