I put a picture in Please help

Answer:

if we dont see a numer in front of a variable it is just 1

Step-by-step explanation:

so for example if you had x^2

it would be 1x^2

Answer:

If they are not collinear, then the three points are coplanar.

Step-by-step explanation

Contrapositive is the negative + opposite of the original statement.

2/5 divided by 5/6 equals 12/25.

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction.

The reciprocal of a fraction is obtained by swapping the numerator and the denominator.

So, to divide 2/5 by 5/6, we multiply 2/5 by the reciprocal of 5/6.

Reciprocal of 5/6 = 6/5

Now, we can multiply the fractions:

[tex]\frac{2}{5} \times \frac{6}{5}[/tex]

[tex]= \frac{2 \times 6}{5 \times 5}[/tex]

[tex]= \frac{12}{25}[/tex]

Therefore, 2/5 divided by 5/6 equals 12/25.

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Answer:

30 degrees

Step-by-step explanation:

a linear pair adds up to 180 degrees. therefore, you can compose the equation 2x+10x=180

12x=180

x=15

the smaller angle is 2x, so 2 times 15 is 30

Step-by-step explanation:

1)All rational numbers are also integers.

2)All integers are rational numbers.

3)All rational numbers can be written in the form.

Complete Question:

On Monday, Sarah has to meet her friend at the park after school. The distance from her house to school is 2x + 5. The distance from school to the park is x. If the total distance she walks that day is 10x + 9, how far is it from the park back to her house?

Answer:

[tex] = 7x + 4 [/tex]

Step-by-step explanation:

Distance from her house to school = 2x + 5

Distance from school to park = x

Total distance walked that day including distance from the park back to her house = 10x + 9

Distance back to her house = total distance walked - (distance form her house to school + distance from school to park)

= [tex] (10x + 9) - ((2x + 5) + (x)) [/tex]

[tex] = (10x + 9) - (2x + 5 + x) [/tex]

[tex] = (10x + 9) - (3x + 5) [/tex]

[tex] = 10x + 9 - 3x - 5 [/tex]

Combine like terms

[tex] = 10x - 3x + 9 - 5 [/tex]

[tex] = 7x + 4 [/tex]

m = amount of money you receive

You need at least $40, so that means you need m = 40 or more

So [tex]m \ge 40[/tex] which is the same as saying [tex]40 \le m[/tex]. You flip both sides and also flip the inequality sign as well.

At the same time, your parents won't give you more than $50. So the largest m can get is m = 50. This means [tex]m \le 50[/tex]

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

Combine [tex]40 \le m[/tex] and [tex]m \le 50[/tex] to get the compound inequality [tex]40 \le m \le 50[/tex]

This represents all the possible values of m. We see that m can get as small as m = 40, or as large as m = 50, or anything in between.

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

Answer: [tex]40 \le m \le 50[/tex]

Answer:

Question 2. 12% of 650 = 78

Step-by-step explanation:

100% = 1 in decimal form.

This is because finding 100% of something is the same as multiplying it by 1:

E.g. 100% of 10=10,  10x1 = 10

Therefore to find a percentage of something, we simply need to multiply it by the decimal form of that percentage. For example, if we were finding 50% of 10 (half), 50% in decimal form is 0.5, 10x0.5 = 5

The percentage here is 12%, we can find the decimal form by dividing it by 100, 12/100 = 0.12

So, in order to find 12% of 650, we just need to multiply 650 by 0.12:

650x0.12 = 78

12% of 650 = 78

Hope this helped!

Answer:

5

Step-by-step explanation:

Answer:

a) 14.11 dollars (b) 204 dollars

Step-by-step explanation:

(a) 500 - 211 = 289    289 '/. 17 = 14 r:7  14.7 dollars

(b) 17 x 5 = 85   289 - 85 = 204

hope this helped :)

Answer:

so if you are looking for Mean, Range, and Median:

Median:44

Range:44

Mean: estimated: 44.6

Step-by-step explanation:

Answer:

If your looking for the M.A.D here

Step-by-step explanation:

Step 1. 45+43+45+44+44+44+47 =312

Step 2. 312/7 =44.57

Step 3.

45 - 44.57=0.43

43 - 44.57=1.57

45 - 44.57=0.43

44 - 44.57=0.57

44 - 44.57=0.57

44 - 44.57=0.57

47 - 44.57=2.43

Step 4.

0.43+1.57+0.43+0.57+0.57+0.57+2.43=6.57

Step 5.

6.57/7 = 0.93

Answer:

jadi kakak pilih 4×16

karena:

4×16×4 = 256

Step-by-step explanation:

thanks you

i'm sorry ya kalo salah

Answer: A= 9

Step-by-step explanation:

2(a+6)-3(a-5)=18

FIRST YOU WANT TO DISTRUBUTE THE PARENTHESIS

2a + 12 -3a + 15 =18

ADD AND SUBTRACT LIKE TERMS

-1a + 27 = 18

SUBTRACT 27 ON BOTH SIDES

-1a + 27 =18

     - 27    -27

-1a= -9

DIVIDES -1 ON BOTH SIDES AND NEGATIVES CANCEL OUT SO IT WOULD BE

A= 9

Answer:

It is 5! :)

:3

Answer:

simplest form is 5.

Step-by-step explanation:

4/1 / 4/5

4/1 * 5/4=20/4

20/4=10/2 or 5/1 or 5

5.

Answer:

It’s 42

Step-by-step explanation: when Quinn return home, it was 0 minutes he turned on the air conditioner. So temperature at that time is equal to value of Q when t=0

Q=42-0.7t

=42-0.7(0)

=42

Answer:

42

Step-by-step explanation:

Answer: A square has two diagonals, they are equal in length and intersect in the middle. The diagonals of a square intersect (cross) in a 90 degree angle. This means that the diagonals of a square are perpendicular. The diagonals of a square are the same length (congruent).

Step-by-step explanation:

Answer:

Step-by-step explanation:

6, 2, 4 =136*

136+136=272

1,3,7,5 = 44 each

360* is the total 4 numbers

Answer:

24 pencils : 64 pens

Step-by-step explanation:

pencils : pens

12:32

Twice as many pencils mean multiply each by 2

12*2 : 32*2

24: 64

24 pencils : 64 pens

Answer:

B

12x2=24

32x2=64

Answer:

14 +15 the answer is this

Answer:

-12

Step-by-step explanation:

Let's replace that blank with x for now ;)

x - (-5) = -7

First, let's change that -(-5) to +5 because subtracting negatives is the same as adding.

x + 5 = -7

Subtract five from each side.

x + 5 = -7

   -5    -5

x = -12

So then we change that x back to the blank and fill it in with -12.

Let me know if this helped!

Answer:

442

Step-by-step explanation:

If you want to decrease 520 by 15%, you have to multiply 15% by 520 first, which is 78. Next, you have to minus 78 from 520. Now you get 442!

The number is 442 which is obtained after decreasing 520 by 15% the answer is 442.

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

Let x be the number that is obtained after decreasing 520 by 15%

= (100 - 15)% of 520

= 85% of 520

= 0.85×520

= 442

Thus, the number is 442 which is obtained after decreasing 520 by 15% the answer is 442.

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Step-by-step explanation:

a. We have v as the amount of drug(mg) in the blood at time t (hrs)

b. Flow rate in = k litre/he

For a circulatory system we have the flow rate in and flow rate out to be the same

Therefore,

Flow rate out = k litre/hr

concentration of drug going in = 0mg/litre

Concentration of drug going out = v mg/litre

V(0) = 20mg since 20mg was taken at midnight

V(0) = 20

Half life t1/2 = 36 hours

V(36) = v(0)/2

= 20/2

= 10mg

C. [tex]ivp = \frac{dv}{dt}[/tex][tex]= -kv[/tex]

[tex]v(0) = 20mg\\v(36) = 10mg[/tex]

d. solution

[tex]\frac{dv}{dt} = -kt\\ln(v) = ln(c) - kt[/tex]

[tex]\frac{v}{c} = e^{-kt} = v=ce^{-kt}[/tex]

v(0) = 20

[tex]ce^{-k(0)} =20[/tex]

c = 20

so

[tex]v(t) = 20e^{-kt}[/tex]

e.

[tex]t\frac{1}{2}=36hours\\ v(36)= 10[/tex]

[tex]10 = 20e^{-36k}[/tex]

[tex]\frac{1}{2} =e^{-36k}[/tex]

we take log

[tex]k=\frac{ln(2)}{36}[/tex]

please check attachment for answer f

Answer:

Step-by-step explanation:

Let's begin the solution by isolating the 4x term:

4x- c= k  =>  4x = c + k

Now divide both sides by 4:

          c + k

x = --------------

              4

This does not match Answer C, but would match Answer C if k + c were divided by 4.  Answer C, as shown, is incorrect.

Answer:

6 represents the number of people among which the balls and jacks will be split.

4 represents the number of balls.

10 represents the number of jacks.

Step-by-step explanation:

This is the PLATO answer, hope it helps :)

Answer:

6

Step-by-step explanation:

Answer:

455 so its A

Step-by-step explanation:

Answer:

455

Step-by-step explanation:

861 - (182 + 224) = 861 - 406 = 455

Answer:

I think it is 5.

Answer:

Answer is 5

Step-by-step explanation:

Doing the quiz go tq00% just wanted to help people hope this helps yall.

Answer:

3(5x+7)

Step-by-step explanation:

15x+21

3(5x+7)

Answer:

3(5x + 7)

Step-by-step explanation:

15x + 21

3(5x + 7)