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madam [21]
3 years ago
8

PLEASE HELP ME I REALLY NEED HELP

Mathematics
2 answers:
quester [9]3 years ago
5 0

a) mean: add all numbers and then divide them.. so:

3+9+10+5+8+5+9+11+10+3+10= 83

83 divided by 11 = 83/11 or 7 4/11

b) median: the middle number of the sequence but put in order first.. so:

smallest to largest: 3,3,5,5,8,9,9,10,10,10,11

so then middle number: 9

c) mode: most frequent (popular) figure/number.. so:

most frequent value: 10

d) range: difference between smallest number and largest number

so in this case: 11-3 = 8

e) positive direction

(NOT SURE IF HTESE R CORRECT - IM IN GRADE 9 BTW

Montano1993 [528]3 years ago
4 0

Answer:

mean; 7.55

median: 9

range: 8

mode: 10

standard deviation: 2.9 or 3

Step-by-step explanation:

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735 mil. Trip in 15 hours what was their average rate
nikdorinn [45]

Answer:

`49 MPH

Step-by-step explanation:

If it took them 15 hours to go 735 miles, and you are trying to find the average rate, then divide the miles by the time (in hours), so for this specific problem, it would be 735 divided by 15 hours, and you will find the answer as 49. (MPH)

5 0
3 years ago
I NEED HELP PLEASE, THANK YOU!
bixtya [17]

Answer:

\sqrt{37}

Step-by-step explanation:

To find the distance between a point (m, n ) and the line

Ax + By + C = 0

d = \frac{|Am +Bn+C|}{\sqrt{A^2+B^2} }

Here (m, n) = (6, 2) and rearranging the line

6x - y + 3 = 0 ← in general form

with A = 6, B = - 1 and C = 3 , then

d = \frac{|6(6)-1(2)+3|}{\sqrt{6^2+(-1)^2} }

   = \frac{|36-2+3|}{\sqrt{36+1} }

   = \frac{37}{\sqrt{37} }  

Rationalise the denominator by multiplying numerator/ denominator by \sqrt{37}

= \frac{37}{\sqrt{37} } × \frac{\sqrt{37} }{\sqrt{37} }

=\frac{37\sqrt{37} }{37} ← cancel 37 on numerator/ denominator

= \sqrt{37}

5 0
3 years ago
Read 2 more answers
A chemist has two alloys, one of which is 15% gold and 20% lead and the other which is 30% gold and 50% lead. How many grams of
vlabodo [156]

Answer: 490 grams of the first alloy should be used.

30 grams of the second alloy should be used.

Step-by-step explanation:

Let x represent the weight of the first alloy in grams that should be used.

Let y represent the weight of the second alloy in grams that should be used.

A chemist has two alloys, one of which is 15% gold and 20% lead. This means that the amount of gold and lead in the first alloy is

0.15x and 0.2x

The second alloy contains 30% gold and 50% lead. This means that the amount of gold and lead in the second alloy is

0.3y and 0.5y

If the alloy to be made contains 82.5 g of gold, it means that

0.15x + 0.3y = 82.5 - - - - - - - - - - - -1

The second alloy would also contain 113 g of lead. This means that

0.2x + 0.5y = 113 - - - - - - - - - - - - -2

Multiplying equation 1 by 0.2 and equation 2 by 0.15, it becomes

0.03x + 0.06y = 16.5

0.03x + 0.075y = 16.95

Subtracting, it becomes

- 0.015y = - 0.45

y = - 0.45/- 0.015

y = 30

Substituting y = 30 into equation 1, it becomes

0.15x + 0.3 × 30 = 82.5

0.15x + 9 = 82.5

0.15x = 82.5 - 9 = 73.5

x = 73.5/0.15

x = 490

6 0
3 years ago
EASY MATH____________
WINSTONCH [101]

Perimeter of a square = 4s where is the length of one side.

Equation:

Area = s^2

169 = s^2

s = 13 inches

B. 13 INCHES

4 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP IM GIVING BRAINLIST TO THE BEST ANSWER!
ehidna [41]

Answer:

E. y - 4 = 6(x+2) is the answer

slope:

m = -8-4/-4+2 = 6

Formula:

y - ys1 = m(x - xs1)

hope this helps!

Step-by-step explanation:

4 0
3 years ago
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