50 POINTS

1. Find f(5)
f(x)=x^2-10x+15

2. Find g(x)+f(x)
f(x)=-4x+12
g(x)=3x+5

3. Find f(x)-g(x)
f(x)=-4x+12
g(x)=3x+5

Answer:

the total weights in tons is 18

Step-by-step explanation:

The computation of the total weights in tons is shown below:

The weight of 8 cars would be

= 4,500 pounds × 8 cars

= 36,000 pounds

Now as we know that 1 ton = 2,000 pounds

So for 8 trucks it would be

= 36,000 pounds ÷ 2,000 pounds

= 18 tons

Hence, the total weights in tons is 18

Answer:

Step-by-step explanation:

1/8*4/5=1/10

Answer:

0.1

Step-by-step explanation:

1/8 * 4/5= 0.1

i think that this is correct

Answer:

81.57 cm

Step-by-step explanation:

Given that :

Scale :

3cm : 100km

This means ; 3cm on the map represents an actual length of 100km

Actual length of shoreline = 2719 km

The length of the shoreline on the map will be :

(2719 km / 100 km) * 3cm

27.19 * 3cm

= 81.57 cm

Answer:

81.57 cm

Step-by-step explanation:

Answer:

B, C, E

Step-by-step explanation:

Elena’s aunt pays her $1 for each call she makes to let people know about her aunt’s new business. The table shows how much money Diego receives for washing windows for his neighbors.

Select all the statements about the situation that are true.

A. Elena makes more money for making 10 calls than Diego makes for washing 10 windows.

Elena:

$1 = 1 call

$10 = 10 calls

Diego:

27 windows = $30

10 windows = $x

Cross product

27*x = 30*10

27x = 300

x = 300/27

x = $11.11

Statement A not true

B. Diego makes more money for washing each window than Elena makes for making each call.

Diego:

10 windows = $11.11

Each window = $11.11/10

= $1.11

Statement B is true

C. Elena makes the same amount of money for 20 calls as Diego makes for 18 windows

Elena:

20 calls = $20

Diego:

18 windows = 18 × $1.11

= $19.98

Approximately $20 to the nearest whole dollar

Statement C is true

D. Diego needs to wash 35 windows to make as much money as Elena makes for 40 calls.

Diego

35 × $1.11 = $38.85

Approximately $39

Elena:

40 calls = $40

Statement D is not true

E. The equation y = x, where y is the number of dollars and x is the number of calls, represents Elena’s situation.

Statement E is true

Answer: 3m/s

Step-by-step explanation:

the formula for speed is distance divided by time, the question tells us the time is referring to the first 30 seconds, so just divide the distance by time (the answers you’d get are 3, 3, 1) so 3 m/s is closest to the average speed

The average speed of the bicyclist during 30 seconds of motion is mathematically given as

v'=3m/s

Question Parameter(s):

During 30 seconds of motion

Generally, the equation for the  speed is mathematically given as

v=d/t

Therefore

v'=(30/10+60/20+30/30)3

v'=3m/s

In conclusion, Average speed

v'=3m/s

Read more about Motion

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Answer:

75

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

Answer:

it is 0.8

Step-by-step explanation: to get 56/70 converted to decimal you simply have to divide 56 by 70.

Answer:

180 i belive

Step-by-step explanation:

Answer: x= 30

Step-by-step explanation:

These are corresponding angles which means they are equal. (2x+25) = (3x-5). Subtract 2x from both sides. 25 = x-5. Add 5 to both sides. 30 = x

Answer:

A.

Step-by-step explanation:

got it right on test

The provided expression is equivalent to the expression mentioned in option (A), and option (A) is correct.

In mathematics, integer exponents are exponents that should be integers. It may be a positive or negative number. In this situation, the positive integer exponents determine the number of times the base number should be multiplied by itself.

We have:

[tex]= 5^{9.969}[/tex]

We can write it as:

[tex]= 5^{\dfrac{9969}{1000}}[/tex]

or

[tex]= 5^{\dfrac{9000+900+60+9}{1000}}[/tex]

[tex]= 5^{{9}} \ 5^{\dfrac{9}{10}} \ 5^{\dfrac{6}{100}} \ 5^{\dfrac{9}{1000}}[/tex]

Thus, the provided expression is equivalent to the expression mentioned in option (A), and option (A) is correct.

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A)

45 degrees, and it is congruent.

90/2 = 45

Since it is an Alternate Interior, it is congruent.

B)

45 degrees. It is also congruent since it is an Alternate Exterior.

C)

135 degrees. It is a linear angle/linear pair.

180-45=135

I actually worked really hard for this so please consider that. I couldn't find help anywhere.

Answer:

(-6, -2)

Step-by-step explanation:

so, the coordinate of A is (-3,-1)

the scale factor is 2

you want to multiply the coordinate by the scale factor

(-3 x 2, -1 x 2)

(-6, -2)

(-6, -2) is your answer :)

Answer:

B.16

Step-by-step explanation:

Divide 60 by 3.75

Answer:

341÷674+846 is exaclly 846.505934718

Answer:

341/674 +846=846.50

it also may be

[tex] \frac{341}{674 + 856} [/tex]

341/1530=0.22

════════ ∘◦❁◦∘ ════════

════════════════════

x1 = (-4)

y1 = (-3)

x2 = (-5)

y2 = (-6)

════════════════════

slope = gradient (m)

════════════════════

[tex]m = \frac{y2 - y1}{x2 - x1} = \frac{( - 6) - ( - 4)}{( - 5) - ( - 3)} = \frac{( - 2)}{( - 2)} = 1 [/tex]

════════════════════

Answer: its choice c or the third one also known as 1/8^8 or 8^-8

Hope this helps, and if it did please mark me as brainliest! >//-//< <3

Answer:

the 3rd one [tex]\frac{1}{8*8*8*8*8*8*8*8 }[/tex]`

Step-by-step explanation:

hope  this helps have a good rest of your night :) ❤

Answer:

22.5

Step-by-step explanation:

find the scale factor

13.5/9 = 1.5

or

18/12 = 1.5

Then times 15 by this to get x

15 x 1.5 = 22.5

Answer:

-13 = n - 4

Step-by-step explanation:

-13 is four less than a number n

so four less than n  can be written as n - 4

-13 = n - 4

n= -9

Answer:

4n+2=15

Step-by-step explanation:

If you count 4 n's and then add 2, the bar is the same length as the 15 bar. ~logic~

Answer:

7

Step-by-step explanation:

We can simplify this because 6x - 3x is equal to 3x, so we get that the expression is 3x - y + 5. Next, we can plug in our values. 3 * 4 - 10 + 5 is equal to 12 - 10 + 5, which is 2 + 5, which is 7.

The value of the expression 6x - 3x + 5 - y at x = 4 and y = 10 is 7.

Substitution in mathematics is when we replace some specific numerical values to variables according to our wants or given in the problem.

Given, An expression 6x - 3x + 5 - y.

Now, The value of the expression at x = 4 and y = 10 can be obtained by replacing the numerical values of x and y.

Therefore, 6x - 3x + 5 - y at x = 4 and y = 10 is,

6(4) - 3(4) + 5 - 10.

= 24 - 12 + 5 - 10.

= 12 - 5.

= 7.

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Step-by-step explanation:

80+20m= 70+25m

10=5m

m= 2

After two months

they will cost $120

Answer:

(-4,-7)

Step-by-step explanation:

Answer:

80

Step-by-step explanation:

Freddie is one meter shorter than his father

His father is 180 centimeters tall

So freddie is 80 centimetres

Freddie is mother÷2

So 80=M÷2

Mother is 190 centimeters

The number of centimeters when Freddie’s mother should be tall is considered to be 90.

Since

Freddie is half as tall as his mother.

Freddie is one metre shorter than his father.

Freddie’s father is 180 centimetres tall.

So

the Freddie is mother is

= 180 / 2

= 90

hence, The number of centimeters when Freddie’s mother should be tall is considered to be 90.

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Answer:

k = 63

Step-by-step explanation:

k/3 - 9 = 12

isolate variable + 9 both sides

k/3 = 21

multiply both sides by three, therefore

k = 63

check:

63/3 - 9 = 12

21 - 9 =12

12 = 12

hope this helps!

The solution of the linear equation k/3 – 9 = 12 will be 63 which is the value of the variable k.

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.

The linear equation is given below.

k/3 – 9 = 12

Add 9 on both sides, then the equation will be

k/3 = 12 + 9

k/3 = 21

Multiply the equation by 3 on both sides, then the value of the variable k will be

k = 21 x 3

k = 63

The solution of the linear equation k/3 – 9 = 12 will be 63 which is the value of the variable k.

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Answer: rhombus and parralelogram

Step-by-step explanation:

Answer:

rhombus and parralelogram

Step-by-step explanation: