2x+3=5 solve for x. Please help! It's due tomorrow!

Answer: -5a + 3b

Step-by-step explanation:

3a + 2b - 8a + b

Start with writing the like terms next to each so that you don't get confused:

3a - 8a + 2b + b

Now, simply the 'a' variable to get:

-5a + 2b + b

Finally simplify the 'b' variable to get:

-5a + 3b

The above expression cannot be simplified further as they do not have any common terms. Therefore, the expression -5a + 3b is in it's simplest form.

The required simplified expression is given as -5a + 3b.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

here,
Given expression,
= 3a + 2b - 8a + b
For the above expression, we have to add the coefficients of  a and b.
= -5a + 3b

Thus, the required simplified expression is given as -5a + 3b.

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Answer:

07

Step-by-step explanation:

The coordinate of A is (-5, 9) if M (-1,2) is the midpoint of AB and if B has coordinates of (3,-5).

It is defined as a representation of coordinates in a two-dimensional coordinate plane. It has a list of two elements in it, such as (x, y).

[tex]\rm Area = |\dfrac{(x_1y_2-y_1x_2)+(x_2y_3-y_2x_3)....+(x_ny_1-y_nx_1)}{2}|[/tex]

It is given that:

The coordinate of the midpoint of AB is M (-1,2)

The coordinate of B is (3, -5)

Let (x, y) be the coordinate of A.

From the mid-point theorem:

(x + 3)/2 = -1

x + 3 = -2

x = -2 - 3

x = -5

(y - 5)/2 = 2

y - 5 = 4

y = 4 + 5

y = 9

The coordinate of A is (-5, 9) and the coordinate of B is (3, -5)

The mid-point of the line segment AB

The coordinate of M is (-1, 2).

Thus, the coordinate of A is (-5, 9) if M (-1,2) is the midpoint of AB and if B has coordinates of (3,-5).

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Answer:

D. -1.8c+0.7

Step-by-step explanation:

Combine like terms so

1.9c-3.7c= -1.8c

2.1-1.4=0.7

Answer:

D.0.7 - 1.8c​

Step-by-step explanation:

1. Simplify the Like terms.

(2.1-1.4)+(-3.7c-1.9c)

2. Simplify

0.7-1.8c

Answer:

a + b + c = 1

Step-by-step explanation:

To expand the bracket, [tex](2x - 3)^{2}[/tex] we will simply be multiplying the bracket by itself.

This will be the same as having [tex](2x - 3) \times (2x - 3)[/tex]

The first step in doing this is to multiply each of the values in the second bracket by the values in the first one.

[tex]2x \times 2x =4x^2[/tex]

[tex]2x\times -3 = -6x[/tex]

[tex]-3 \times 2x = -6x[/tex]

[tex]-3 \times -3 =9[/tex]

Once this is done, the next step is to group the like terms and evaluate the result.

[tex]4x^2 -6x-6x +9[/tex]

[tex]4x^2 -12x +9[/tex]

This is algebraic expression is the result of the expansion of [tex](2x - 3)^{2}[/tex] .

Based on the descending powers of x

a = 4

b = -12

c = 9

These are the coefficients of [tex]x^2[/tex]  and [tex]x[/tex] and also the last figure.

a + b + c = 4 -12 +9 = 1

That is a difficult one

Assuming A, B and C are all on the same straight line, this means,

AB+BC = AC

through the segment addition postulate.

So,

AC = AB+BC

AC = (6x+2)+(5x+3)

AC = 6x+2+5x+3

AC = (6x+5x)+(2+3)

Answer:

16, 16, 32, 32

Step-by-step explanation: If you take 92 and divide it by 4 you get 24 but you need one side to be longer than the other, subtract 6 and you get 16, and 16x2 is 32, if you add 16+16+32+32 you get 96.

Answer:

Hello...

Step-by-step explanation:

Answer:

You would find it in the 1st quadrant (top-right) on the y axis

Hope this helps

Answer:

After 4 months she will have $454.50.

Step-by-step explanation:

4 x $120 = $480

$480 - $25.50 =$454.50

Answer:

$454.50

Step-by-step explanation:

Answer:

I'm pretty sure it's -15

Step-by-step explanation:

Answer:

Mean of this data set is 43.7857

the median of this data set is 42

Step-by-step explanation:

The complete question is:

Fifteen seventh graders were randomly selected to see how many pushups in a row they could do. Their data are shown. A. b. 45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36

a. Determine the mean of this data set.

b. Determine the median of this data set.

Given:

Data:

45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36

To find:

a) Mean

b) Median

Solution:

a)

The formula to find Mean is :

Mean = Sum of all the values / Total number of values

          = ∑ x / n

Here there are total 14 values so n = 14

Now lets find sum of all the values

∑ x =  45 + 40 + 36 + 38 + 42 + 48 + 40 + 40 + 70 + 45 + 42 + 43 + 48 + 36

     = 613

Now compute Mean:

Mean = ∑ x / n

          =  613 / 14

         = 43.785714

Mean = 43.7857

b)

The formula to find Median is:

Since there are 14 values in the data this means the data has even number of values. So to compute the median of even number of values:

First put the values in order.

Second, find the middle pair of values in data

Third, find the value that is half way between them i.e. by adding the two middle pair values and dividing the result by 2

45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36

Ordering the values :

36, 36, 38, 40, 40, 40, 42, 42, 43, 45, 45, 48, 48, 70

Find the middle two numbers:

42, 42

We can see that both are same values so median value is 42 but to follow the above steps:

Now add these two numbers and divide the sum by 2:

42 + 42 = 84

84/2 = 42

So the median of this data set is 42

Answer:

n = m r - r t

Step-by-step explanation:

Solve for n:

m = n/r + t

Hint: | Reverse the equality in m = n/r + t in order to isolate n to the left hand side.

m = n/r + t is equivalent to n/r + t = m:

n/r + t = m

Hint: | Isolate terms with n to the left hand side.

Subtract t from both sides:

n/r = -t + m

Hint: | Solve for n.

Multiply both sides by r:

Answer: n = m r - r t

Answer:

Well, the club can buy atleast 15 canvases

Step-by-step explanation:

If they have 350 left, Minus 125, = 225

What they can buy, 225 divided by 15 = 15.

Answer:

34 of the paint? is it 3/4 or just 34?

Step-by-step explanation:

Answer:

11.3

Step-by-step explanation:

divide my dude

Answer:

0.2

Step-by-step explanation:

0.002 x 10 as it is 1/10 of the size

The answer is 0.2.

Here,

We have to find the number as 'the answer to 0.02 is 1/10 of the number.'

What is Mathematical expression?

The combination of numbers and variables by using operations addition, subtraction, multiplication and division is called Mathematical expression.

Now,

Let the number is x.

Then, By given condition the expression is written as;

0.02 = (1/10) * x

(1/10) * x = 0.02

x = 0.02 * 10

x = 0.2

Hence, The value is 0.2

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Answer:4

Step-by-step explanation:

Answer:

                11

3.456 × 10

Step-by-step explanation:

The volume of a cube = e^3

e = a single edge of the cube.

Area of a square = a^2

a = a single side of the square.

The volume of our cube = 13 ft^3

e = [tex]\sqrt[3]{13}[/tex] = 2.35 ft

The area of our square =  4 ft^2

a = [tex]\sqrt{4}[/tex] = 2 ft

The edge of our cube is greater than the length of our square's side.

The poster will lie flat in the box.

Answer:

15

Step-by-step explanation:

Answer:

n=-3

Step-by-step explanation:

so its actually 3n+9=0 so you can subtract 9 to get 3n=-9

                            -9  -9

then divide 3n and -9 by 3 to get n by itself so it looks like n=-3 hope this helps :)

Answer:

4

Step-by-step explanation:

The theoretical probability of getting a number is 1/6 since there is 6 sides

We rolled the dice 60 times

The experimental = x/60  where x is the number of times the number comes up

We want the theoretical to equal the experimental

1/6 = x/60

1/6 * 10/10 = 10/60

x = 10

This occurs for the number 4

Answer:

f=1

Step-by-step explanation:

Let start off with doing -f plus 4f which gives you 3f. The equation would now be 2+3f=8-3f. Add 3f so you can cancel out the -3f and add the 3f to the other 3f. Now your equation is 2+6f=8. Cancel out do by doing -2. (Don't forget to to it to the 8 also.) Now your equation is 6f=6. Divide 6 from both sides to get 1. (You divide because you want to get f alone.

Answer:

Step-by-step explanation:

70 < 3x + 10 < 100

first part:

70 < 3x + 10

70-10<3x

60/3<x

second part

3x + 10 < 100

3x<100-10

3x<90

x<90/3

Answer: x>16/3

Step-by-step explanation :0

Answer:

[tex]k=-28[/tex]

Step-by-step explanation:

[tex]k+1=-27[/tex]

Subtract 1 from both sides:

[tex]k+1-1=-27-1[/tex]

[tex]k=-28[/tex]

Answer:

C

Step-by-step explanation:

Any fraction with a denominator of 0 is irrational.

Answer:

15 metres

Step-by-step explanation:

A hexagon has 6 sides:

Let x be the length of one side:

6x= 90

x = 90 / 6 = 15 m.

Hey there glad I can help!!

Answer:

15

Step-by-step explanation:

90/6=15

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Work Shown:

There are 13 diamond cards. The probability of getting a diamond card is 13/52 = 1/4.

Assuming the first card is not replaced, the probability of getting another diamond card is 12/51. Note how I subtracted 1 from the numerator and denominator of 13/52 to get 12/51.

Multiply the two fractions to get

(1/4)*(12/51) = 12/204 = 1/17

The probability of getting two diamonds in a row is 1/17

We'll use this later, so let A = 1/17.

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

There are 4 kings. The probability of pulling out a king is 4/52 = 1/13

The probability of pulling out another king is 3/51 = 1/17

The probability of pulling out two kings in a row is (1/13)*(1/17) = 1/221

Let B = 1/221

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

Add the values of A and B

A+B = 1/17 + 1/221

A+B = 13/221 + 1/221

A+B = (13+1)/221

A+B = 14/221

A+B = 0.0633 which is approximate

That converts to 6.33% when you move the decimal point over 2 spots to the right.

We have that  the probability that both are diamonds or both are kings.

P(D+K)=32\%

From the question we are told

Two cards are drawn from the pack of 52 cards. Find the probability that both are diamonds or both are kings.

Generally the equation for the  both are diamonds or both are kings  is mathematically given as

[tex]P(D+K)=\frac{d}{52}+ \frac{k}{52}[/tex]

Therefore

[tex]P(D+K)=\frac{13}{52}+ \frac{4}{52}\\\\P(D+K)=0.32[/tex]

P(D+K)=32\%

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Answer:

Step-by-step explanation:

X + 3 + X + X = 180

3X + 3 = 180

3X = 177

3X   =   177

ــــــــــــــــــــــــــ

3            3

X = 59