need help with 7 and 8 please

Answer:

C. (-4, -5)

Step-by-step explanation:

x = -4

y = -5

Plug the values into the equation.

-2(-4) - 5 = 3

Multiply -2 by -4

8

Subtract 5 from 8

The answer is 3

So these ordered pairs are correct

Hope I helped :)

Answer:

9 - 6r

Step-by-step explanation:

Answer:

2(a)=20t

Step-by-step explanation:

Mark me as brainliest

Answer:

10%

Step-by-step explanation:

5/50=x/100

5×100=500

500/50=10

x=10

10%

Percentage of total hours were spent skiing is 10%

Percentage is defined as a relative value indicating 100th parts of any quantity. It is denoted by symbol of %.

Given that,

Soccer = 5 hours

Jogging =20 hours

Walking =10 hours

Skiing = 5 hours

Football = 10 hours

Total hours were spent all activity = 5+20+10+5+10=50

Let, percentage of total hours were spent skiing = x

5/50=x/100

5×100=500

500/50=10

x=10

Hence Percentage of total hours were spent skiing is 10%

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Answer:

The answer is 38.

Step-by-step explanation:

n²−5n+2

=(-4)²-5(-4)+2

=16+20+2

=38

Answer:

22

Step-by-step explanation:

hope this helps （＾∀＾●）ﾉｼ

Answer:

Six .

Step-by-step explanation:

200-50 =150      150/25=6      Gale can take 6 lessons . the underlined should be green

Answer:

x = 3

Step-by-step explanation:

Answer:

It is not one to one... Because if you draw horizontal lines, it interests the graph at two points

Answer:

Step-by-step explanation:

it’s actually 88 inches

Answer:

5

Step-by-step explanation:

5x3=15

15+6=21

Hope this helped pls give brainliest

Answer:

true

Step-by-step explanation:

Answer:

3 and 29 OR 13 and 19

Step-by-step explanation:

Answer:

so if you divide 212 by 2 you get 106 so then subtract 34 from forigen stamps and as you add to domestic stamps untill you get 34 more domestic stamps than forgin stamps

Step-by-step explanation:

so 106 with both subtract 17 from forgin and add 17 to domestic

123 for domestic

89 for forgein

Answers:

================================================

Explanation:

Consider the set {x1,x2,x3,...,xn}. The numbers 1,2,3,...,n represent the index of each x value. So we have n numbers we want to find the average.

The sum of those values is

S = x1+x2+x3+...+xn

When dividing that over n, we get the average A

A = S/n

A = (x1+x2+x3+...+xn)/n

-----------------

Now consider adding 4 to each x value

We have this new set

{x1+4, x2+4,x3+4,...,xn+4}

The new sum T is

T = (x1+4)+(x2+4)+(x3+4)+...+(xn+4)

T = (x1+x2+x3+...+xn) + (4+4+4...+4)

T = S + 4n

Divide both sides by n

T/n = (S+4n)/n

T/n = (S/n) + (4n/n)

T/n = (S/n) + 4

T/n = 47+4

T/n = 51

The new average T/n is 4 larger compared to the old average S/n. So we just add 4 to the old average 47 to get 51 as the new average.

-----------------

If we shift every value the same amount, then the standard deviation and variance will not change. This is because both of those items measure how spread out a distribution is. Shifting each item the same amount, keeps the same spread and shape of the distribution. If only affected some of the items, then the standard deviation and variance would change.

Note that,

variance = (standard deviation)^2

variance = (14)^2

variance = 196

Answer:

the last one: yes it can, because -4.5 lies to left of -3.5

Step-by-step explanation:

Answer:

yes it can because -4.5 lies to the left of -3.5

Step-by-step explanation:

this puts -4.5 in the shaded region which starts at -3.5 and keeps going left till infinity

Answer:

kei = kelvin\_kei(x) evaluates an approximation to the Kelvin function kei x. The function is based on several Chebyshev expansions. For large x, kei x is so small that it cannot be computed without underflow and the function fails.

kei (output, double)

Approximation of the Kelvin function kei x.

The correct answer is 26.5ft

The distance between the stick and Lisa is C) 45.6 ft.

The sine rule for triangle ABC is a/sinA = b/sinB = c/sinC.

Given, Lisa and Molly are standing on a bridge and see a tree sticking out of the water.

m∠M = 103°, m∠L = 54°, and the side opposite to ∠L is l which is 22 feet and m is the side opposite to ∠M.

∴ 22/sin54° = m/sin103°.

22/0.8 = m/0.97.

m = 26.67 feet.

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Answer:

A)10

Step-by-step explanation:

90 dollars in 6 weeks so if you divide them you get 15 so she make 15 dollars a week so do 150 divided by 15 and you get 10

Answer:10 or A

Step-by-step explanation:

90 ÷ 6 = 15

150 ÷ 15=

   10

Answer:

-4

Step-by-step explanation:

Every number:

negative, positive, negative, positive....

Each is 1/5 of the previous

answer = -4

Answer:

I believe the answer is 12, with 9 remaining students.

Answer:

Jane's situation is the one which represents a porportional relationship.

Step-by-step explanation:

To verify the proportionality betwen a ratio you have to divide all the ratios and all them have to get the same constant factor.

So, if you divide the matt's ratios you aren't gonna find the same constant factor

12/1=12

20/2=10

31/2=15,5

But if you try with Jane's ones:

12/1=12

24/2=12

36/3=12

This 12 is the known constant factor, which show us that these ratios are proportional.

Answer:

112.24

Step-by-step explanation: Multiply the amount by the 28% as a decimal, then add the product to the original number.

Answer:

the answer would be c.

Step-by-step explanation:

in order to be a function the x axis cannot repeat itself. after process of elimination you are left with c which is the only option in which x does not repeat.

Answer:

rise/rum so it would be 1,2?

Step-by-step explanation:

Answer:

The difference of t-8, multiplied by 3

Correct me if i'm wrong

The expression in the word form can be written as the difference of t-8, multiplied by 3.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given expression is 3(t-8)=9 the word form will be written as below:-

3(t-8)=9 =  The difference of t-8, multiplied by 3.

3(t-8)=9

3t - 24 = 9

3t = 33

t =11

Therefore, the expression in the word form can be written as the difference of t-8, multiplied by 3.

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Answer:

8 4/5

Step-by-step explanation:

it is simple

8*5=40 and 4 left over = 8 4/5

Answer:

8 and 4/5 i wanna say

Step-by-step explanation:

so 5 goes into 40 8 times with 4 remaining so i wanna say 8 4/5 mark me as brainlest please have a nice day

Answer:

26 brodie

Step-by-step explanation:

Answer:

5+21=26

Step-by-step explanation:

Hope this helped, Have a Great Day!!