Find the value of x if the perimeter is 30. X+3, x, 2x-1

Answer:

10x-3y=12

Step-by-step explanation:

In algebra, we always add alike terms. Meaning, when a set has numbers with the same variable, in this case it was x, we can add/substract/divide them to simplify the equations.

Answer:

to find the mean you must add all of the numbers in a data set together and then divide by how many numbers there are.

Answer:

give brainliest?

Step-by-step explanation:

the mean or average of a data set is found by adding all numbers in the data  and then dividing by the number of values in the set.

For example, if you have 10 numbers, you add them up and divide by 10. This would give you the mean of the data.

Here's another example with the numbers: 9,8,22,7,7,8,17

First add the numbers up: 9+6+20+7+7+8+20+2+2 = 81 Then divide 81 by the total number of data points, 9, and you get 9.

Theerefore the mean is 9.

Answer:

ion kno gang ask a teacher

Answer:

aₙ=0.25*10ⁿ.

Step-by-step explanation:

0.25*10=2.5; 2.5*10=25; 25*10=250.., then it can be written as aₙ=0.25*10ⁿ

Part A

Answers:

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

Explanation:

The two terms are separated by a plus sign. Since we have two terms, we have a binomial.

The variables are p and q, acting as placeholders for unknown numbers.

The coefficients are the numbers to the left of the variables, which are the 4 and 7.

The degree of multivariable polynomials is found by adding up the exponents for each term, then picking the largest sum. In each case, we get a sum of 3 for each monomial. The degree of the entire polynomial is therefore 3.

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

Part B

Answer:   t^3 - 20t + 26

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

Explanation:

We have an expression of the form

(6t^3-3t+5) - x = (5t^3 + 17t - 21)

which rearranges to

-x = (5t^3 + 17t - 21) - (6t^3-3t+5)

-x = 5t^3 + 17t - 21 - 6t^3 + 3t - 5

-x = (5t^3 - 6t^3) + (17t+3t) + (-21-5)

-x = -t^3 + 20t - 26

x = -(-t^3 + 20t - 26)

x = t^3 - 20t + 26

Answer:

y=-1/2x+2

Step-by-step explanation:

2-1/2x=y

y=2-1/2x

y=-1/2x+2

Answer:

D.45

take the problem then times it by all your payments by each individual price

Answer:

47.13

Step-by-step explanation:

Answer:

mm99

Step-by-step explanation:

Answer:

the answer is 16 okay it simple ok

Answer:

for lines to be Parallel it means they will never touch. Think of train tracks. The two rails will never touch each other. For lines to be perpendicular they have to meet each other to form a corner. think the edge of a desk.

Answer:

47.46 dollars

Step-by-step explanation:

If the store Macy has to increase the retail by 13%, then Macy store must increase the shirt. So you must increase 42 dollar by 13%.

Answer:

A) 96 cm

Step-by-step explanation:

Split into three parallelograms

Shape 1: 6 by 7     6×7=42

Shape 2: 3 by 4    3×4=12

Shape 3: 6 by 7    6×7=42

42+12+42=96

Answer:

96 cm

Step-by-step explanation:

Breaking the shape up into 3 smaller rectangles then finding the area of each gives us the total area

[tex]6*7=42*2=84[/tex]

[tex]3*4=12[/tex]

[tex]84+12=96[/tex]

Answer: x=-1

Step-by-step explanation:

The multiples of 5 include 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80...

Given that its a straight line, so the sum of three angles is 180°

So possible angles:

..

d + c = 19

100d + 15c = 1390

we can simplify the second equation

20d + 3c = 278

now d + c = 19

c = 19 - d

3c = 57 - 3d

now plug into second equation

20d + 57 - 3d = 278

17d = 278 - 57

17d = 221

d = 221 / 17

d = 13

now we can plug this into the first equation

13 + c = 19

c = 19 - 13

c = 6

13 dogs were sold and 6 cats were sold

Answer:

62

Step-by-step explanation:

93÷150=0.62

×100 = 62

Hope this helps!!!!

Answer:

62

Step-by-step explanation:

Divide

93/150% = 62

(100*93) / 150

9,300/150 = 62

Answer:

Exterior angle bisectors of the side △ABC at vertices B and C intersect at D. Find ∠BDC if ∠BAC=40∘

Step-by-step explanation:

Select all expressions that are equal to 5/8.

Let's review each option one by one.

Option A

Thus, Option A is correct.

Option B

Thus, Option B is incorrect.

Option C

Thus, Option C is incorrect.

Option D

Thus, Option D is correct.

Option E

Thus, Option E is incorrect.

Answer:

sub to juice_fox. ?....

Answer:

C. y≥2

Step-by-step explanation:

y+5≥7

You must subtract 5 from both sides

y≥7-5

y≥2

Step-by-step explanation:

½+⅛ = ⁴/8 + ⅛ = ⅝

bold one's are answer.

hope this helps you.

Answer: C. is not correct because angle 2 and angle 5 are same side interior angles. Same side interior angles of parallel lines always add up to 180 degrees. Therefore, the only way angle 2 would be equal to angle 5 would be if they were both 90 degrees, which the two angles are not always right angles.

Answer:

8

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

√50 is close to √49

49 is a perfect square, 50 is close to 49.

√49 = 7

√50 ≈ 7.071068

Answer:

7

Step-by-step explanation:

[tex]\sqrt{50} =7.07[/tex]

Hope this helps  

We know that,

[tex]V = \frac{1}{3} (a{}^{2} + ab + b{}^{2})h \\ [/tex]

Also,

[tex]l {}^{2} = h {}^{2} + (b - a) {}^{2} [/tex]

[tex]6{}^{2} = h {}^{2} + (9 - 5) {}^{2} [/tex]

[tex]36 = h {}^{2} +16[/tex]

[tex]h {}^{2} = 36 - 16[/tex]

[tex]h = \sqrt{20} [/tex]

[tex]h = 4.47[/tex]

Now , putting the value in the formula of volume

we get,

[tex]V = \frac{1}{3} (5{}^{2}+ 5 \times 9 + 9{}^{2})4.47 \\ [/tex]

[tex]V = \frac{1}{3} (25 + 5 \times 9 + 81)4.47 \\ [/tex]

[tex]V = \frac{1}{3} (25 + 45 + 81)4.47 \\ [/tex]

[tex]V = \frac{1}{3} \times 151 \times 4.47 \\ [/tex]

[tex]V = 224.99[/tex]

Hence, the volume of the given frustum is 224.99 cubic unit

Answer:

1. 7(g-5)

2. 12(5m+2n)

3. 2(11w+5)

4. 8(5a+b-3)

5. 4(r+7t-10)

Step-by-step explanation:

simply take out the most common multiple of these numbers

Answer:

x = 100

Step-by-step explanation:

57 + x + 23 = 180

x + 80 = 180

x = 100

Answer:

100

Step-by-step explanation:

180-57

=123

123=x+23

x=123-23

x=100

Answer:

Let brother's present age be x and sister's present be y

x=y+3

5 years ago

x-5/y-5=4/3

Putting the value of x

y+3–5/y-5=4/3

y-2/y-5=4/3

3(y-2)=4(y-5)

3y-6=4y-20

y=14

x=14+3=17

Brother's present age =17years, sister's present age=14years

Answer:

87

Step-by-step explanation:

Split into three rectangles

Shape 1: 12 by 3    12×3=36

Shape 2: 3 by 5    3×5=15

Shape 3: 12 by 3   12×3=36

36+15+36=87

Answer:

87 yds

Step-by-step explanation:

simply break the shape into 3 smaller rectangles and find the area of each one

1st one [tex]12*3=36[/tex]

2nd one[tex]5*3=15[/tex]

3rd one[tex]12*3=36[/tex]

add up the areas [tex]36+36+15=87[/tex]