If a = 3 what is the value of b in the equation 2a+b=13? And can you explain?

Answers

Answer 1

Answer:

b=7

Step-by-step explanation:

Plug 3 into a since a=3.

2(3)+b=13

Then solve for 2(3)

6+b=13

Now isolate the b, so move the 6 to the other side. (Basically subtract 6 from both sides)

b=13-6

b=7

Answer 2
When there is a letter next to a number you multiply so it would be 2 x A and a is 3 so 2x3=6 but to get the answer you have to subtract 6 from the total 13 and you get 7

So the answer is 7!

Related Questions

If 3 is one-quarter of some number, what is that number

Answers

12 because 1/4 is 3 so then multiply
that by 4 and you get the whole number which is 12

A crayon is 4 inches long. A wooden board is 8 feet long. Which diagram and statement best represents their lengths?

Answers

The wooden board is 24 times the length of Crayon which is represented by Figure C.

We have,

A crayon is 4 inches long.

A wooden board is 8 feet long.

We know that

1 feet = 12 inch

So, 8 feet = 12 x 8 = 96 inches

Now, the factor between Caron and wooden block

= 96 / 4

= 24

Thus, the wooden board is 24 times the length of Crayon which is represented by Figure C.

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If f left parenthesis x right parenthesis equals 3 x plus 4 evaluate to find what f left parenthesis negative 2 right parenthesis space equals space ?

Answers

Answer:

-2

Step-by-step explanation:

Given the function f(x) = 3x+4. To find f(-2), we will substitute x = -2 into the given function as shown;

F(-2) = 3(-2)+4

F(-2) = -6+4

F(-2) = -2

Hence the value of f(-2) is -2

Find the perimeter of the triangle with coordinates A(5,2), B(5,4), and C(1,1). Round to the nearest tenth.

Answers

Answer:

A 5,2

Step-by-step explanation:

You can buy 3 apples at the Quick Market for $1.05. You can buy 5 of the
same apples at Stop and Save for $2.30. Which place is the better buy?

Answers

Answer:

Stop and Save is a better value

Step-by-step explanation:

[tex]\frac{3}{1.05} = 2.86\\\frac{5}{2.30} = 2.17[/tex]

Answer:

3 apples at quick market.

Step-by-step explanation:

they only cost $0.44 dollars each

Jeremy bought 3 pairs of pants that cost the same amount of money. He had a $10 off coupon for the pants. Using the coupon, Jeremy spent $35. Find the cost of each pair of pants before the coupon was
applied (Don't forget your units!) PLEASE REPLY ASAP

Answers

Answer: each pair of pants costed 15 $

Step-by-step explanation:

35+10 = 45/3 = 15

Answer: $15 each

Step-by-step explanation: add 35 + 10 = 45, then divide 45 ÷ 3 = 15

A coffee shop served 24 people before 7:00am. Two-thirds had regular coffee, one-eighth had decaf, and the remaining ordered a specialty coffee. How many customers ordered a specialty coffee?

Answers

Answer:

5 people

Step-by-step explanation:

Regular- 2/3 times 24/1 gets you 16 people

Decaf- 1/8 times 24/1 gets you 3 people

16+3 is 19

24-19=5 people

The number of customers that ordered a specialty coffee is 5.

What is a fraction?

Fractions represent the parts of a whole or collection of objects.

A fraction has two parts. The number on the top of the line is called the numerator and the number on the top of the line is called the denominator.

Now it is given that,

Total number of customers = 24

Customers having regular coffee = Two-thirds

Number of customers having regular coffee = 2/3 * 24 = 16

Customers that had decaf = one-eight

Number of customers having decaf = 1/8 * 24 = 3

Total number of customers having regular coffee and decaf = 16 + 3 = 19

Therefore, Customers that ordered a specialty coffee = Total number of customers - Total number of customers having regular coffee and decaf

Customers that ordered a specialty coffee = 24 - 19

Customers that ordered a specialty coffee = 5

Thus, the number of customers that ordered a specialty coffee is 5.

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Arrange these numbers in order from least to greatest.

0.352
3.3%
1/5

Answers

Answer:

1/5, 3.3%, 0.352

Step-by-step explanation:

1/5 as a decimal is 0.2

the greatest is 0.352 because it has the highest number in the tenths place.

that is why the answer is:

1/5, 3.3%, 0.352

Answer:0.352, 3.3%, 1/5

Step-by-step explanation:

0.352 is the smallest amount and 1/5 is obviously the biggest if you go from 100, 1/5 would be 20 and 3.3% would be 3.3 and then .352 would be last not even equaling 1.

PLEASEEE HELP ASAPPP!!!!
Set the sliders for radius and central angle to the predetermined values in the table. Then complete the table with the required values and your observations.

Answers

Answer:

Measure of Central Angle/360:

1/4

1/2

3/4

1/4

1/2

3/4

Visually, how much of the circle is covered by the sector?

one-fourth

one-half

three-fourths

one-fourth

one-half  

three-fourths  

Step-by-step explanation: Plato Answer

Plato exsample :) good luck

LaTeX: 5+\sqrt{81}\div9

Answers

Answer:

[tex]6[/tex]

Step-by-step explanation:

[tex]5+\sqrt{81}\div9[/tex]

[tex]5+\frac{\sqrt{81}}{9}[/tex]

[tex]5+\frac{9}{9}[/tex]

[tex]5+1[/tex]

[tex]6[/tex]

Victor is saving for a used car that costs $8,000. He plans to save $500 every month. Calculate how long it would take him to save to buy the car?

Answers

16 months ! i used m to represent the number of months, and you would do
1) 8,000 = 500m
2) divide by 500 on both sides
3) 8,000/ 500 = 16
4) 16 = m


9/4 divided by 3/8 ?

Answers

Answer:

6

Step-by-step explanation:

What is the solution set of -|x| = -8?
A. {8}
B. {-8}
C. {-8, 8}
D. no solution

Need an answer soon.
Thank you to that who figures it out.​

Answers

Your answer is C 8 and -8

Please help.. tysm if you do :)

Answers

Answer:

p = -7

a = 10

Step-by-step explanation:

Question 1:

Step 1: Write out equation

-22 = 12p - 2(5p + 4)

Step 2: Distribute

-22 = 12p - 10p - 8

Step 3: Combine like terms (p)

-22 = 2p - 8

Step 4: Add 8 to both sides

-14 = 2p

Step 5: Divide both sides by 2

-7 = p

Step 6: Rewrite

p = -7

Question 2:

Step 1: Write out equation

11a - (4a - 7) = 77

Step 2: Distribute

11a - 4a + 7 = 77

Step 3: Combine like terms (a)

7a + 7 = 77

Step 4: Subtract 7 on both sides

7a = 70

Step 5: Divide both sides by 7

a = 10

Find the lcm of 36 and 48

Answers

Answer:144

Step-by-step explanation:

36 x 4 = 144

48 × 3 = 144

explain how would you find the square root of a number​

Answers

Answer:

multiply

Step-by-step explanation:

i know this from 3rd grade

Answer:using division method

Step-by-step explanation:

Example is the square root of 144

144 divided by the less prime number till 144 can not be divided again

144÷2=72

72÷2=36

36÷2=18

18÷2=9

9÷3=3

3÷3=1

Then you group the prime numbers used

(2×2)×(2×2)×(3×3)

Then take one of the prime numbers form each group

2×2×3=12

-3-(-5) =
I am stupid help me

Answers

Answer:

2

Step-by-step explanation:

-3+5= 2

Answer:

2

Step-by-step explanation:

any crime and violation of _______ has a specific punishment​

Answers

The law???????????????

order the numbers from least to greatest. √9/4 2.5 5/3 5

Answers

Answer:

least:  sqrt( 9/5)

                5/3

             sqrt(5)

greatest: 2.5

Step-by-step explanation:

The least to greatest order is √9/4, 5/3, √5, and 2.5 after simplification the numbers.

What is the number?

A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56, etc. are the numbers.

As we know,

The integer can be defined as the whole number it can be a negative whole number or a positive whole number for example 2, 4, 1, -8, 0, etc.

It is defined as the numbers in all real numbers which cannot be represented as rational numbers, in other words, the irrational number cannot be expressed in the form of p/q form.

A rational number is a sort of real number that has the form p/q and does not equal zero.

Thus, the least to greatest order is √9/4, 5/3, √5, and 2.5 after simplification the numbers.

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An olympic-size swimming pool is a rectangle that measures 50 meters in length and 25 meters in width. Make a scale drawing of an olympic-size swimming pool where 1 centimeter represents 5 meters. What are the length and width of your scale drawing?

Answers

Answer:

Length: 10 cm

Width: 5 cm

Step-by-step explanation:

The required length and width of the scale drawing are given a length will be 10 cm and the width will be 5 cm.

Given that,
A swimming pool of rectangle shape that measures 50 meters in length and 25 meters in width. To make a scale drawing of an Olympic-size swimming pool where 1 centimeter represents 5 meters.

What is the scale factor?

The scale factor is defined as the ratio of the modified change in length to the original length.

Here,
Given scale: 1 cm = 5 m
So, for 1 m = 1/5 cm
Now,
Length = 50 × 1/5  = 10 cm
Width = 25 × 1/5 = 5 cm

Thus, the required length and width of the scale drawing is given a length will be 10 cm and a width will be 5 cm.

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How do you know that the sum of (-2 3/4) and 5/9 is rational?

Answers

Answer:

Because they are fractions every fractions is rational .

Step-by-step explanation:

Answer:

The sum is a fraction

Step-by-step explanation:

6. Which of the following is equivalent to (2x + 2)(3x+1)
(1) 6x² +2
(3) 6x² +8x+2
(2) 5x2 + 8x+3
(4) 16x ^3

Answers

Answer:

6x2+8x+2

this is the answer

It’s 1 because u have to multiply 6 by 2 then add 2

find the measure , I need help

Answers

Answer:

166°

Step-by-step explanation:

Since ∠A = ∠B,

the equation below helps to find the value of x and angle A:

7x + 40° = 3x + 112°7x - 3x = 112° - 40°4x = 72°x = 72°/4x = 18°∠A = 7*18° + 40° = 166°

7x+40-180=3x+112-180

7x-3x=112-40

4x=72

x=18

A=7*18+40=126

B=21+112=133

the corners of a meadow are shown on a coordinate grid. Ethan wants to fence the meadow. What length of fencing is required?

On the grid: Point A (-6,2); Point B (2,6); Point C (7,1); Point D (3,-5)

Answers

Answer:

34.6 units

Step-by-step explanation:

The lenght of fencing required is the total distance between point A to B, B to C, C to D, and D to A. That is the distance between all 4 corners of the meadow.

The coordinates of the corners of the meadow is shown on a coordinate plane in the attachment. (See attachment below).

Let's use the distance formula to calculate the distance between the 4 corners of the meadow using their coordinates as follows:

Distance between point A(-6, 2) and point B(2, 6):

[tex] AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] A(-6, 2)) = (x_1, y_1) [/tex]

[tex] B(2, 6) = (x_2, y_2) [/tex]

[tex] AB = \sqrt{(2 - (-6))^2 + (6 - 2)^2} [/tex]

[tex] AB = \sqrt{(8)^2 + (4)^2} [/tex]

[tex] AB = \sqrt{64 + 16} = \sqrt{80} [/tex]

[tex] AB = 8.9 [/tex] (nearest tenth)

Distance between B(2, 6) and C(7, 1):

[tex] BC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] B(2, 6) = (x_1, y_1) [/tex]

[tex] C(7, 1) = (x_2, y_2) [/tex]

[tex] BC = \sqrt{(7 - 2)^2 + (1 - 6)^2} [/tex]

[tex] BC = \sqrt{(5)^2 + (-5)^2} [/tex]

[tex] BC = \sqrt{25 + 25} = \sqrt{50} [/tex]

[tex] BC = 7.1 [/tex] (nearest tenth)

Distance between C(7, 1) and D(3, -5):

[tex] CD = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] C(7, 1) = (x_1, y_1) [/tex]

[tex] D(3, -5) = (x_2, y_2) [/tex]

[tex] CD = \sqrt{(3 - 7)^2 + (-5 - 1)^2} [/tex]

[tex] CD = \sqrt{(-4)^2 + (-6)^2} [/tex]

[tex] CD = \sqrt{16 + 36} = \sqrt{52} [/tex]

[tex] CD = 7.2 [/tex] (nearest tenth)

Distance between D(3, -5) and A(-6, 2):

[tex] DA = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Let,

[tex] D(3, -5) = (x_1, y_1) [/tex]

[tex] A(-6, 2) = (x_2, y_2) [/tex]

[tex] DA = \sqrt{(-6 - 3)^2 + (2 - (-5))^2} [/tex]

[tex] DA = \sqrt{(-9)^2 + (7)^2} [/tex]

[tex] DA = \sqrt{81 + 49} = \sqrt{130} [/tex]

[tex] DA = 11.4 [/tex] (nearest tenth)

Length of fencing required = 8.9 + 7.1 + 7.2 + 11.4 = 34.6 units

Help me please this is very important

Answers

I think it would just be 13 because T to U is 11 and U to V is 2 so if you want to find T to V you would add them together

Hope this helps in any way :))

Answer:

assuming that point u is inbetween points T and V then the length of TV would be 13

Step-by-step explanation:

T-----------U--V

solve for x

-x + 1 = x + 21

Answers

Answer:

[tex]x=-10[/tex]

Step-by-step explanation:

[tex]-x+1=x+21[/tex]

Subtract 1 from both sides:

[tex]-x+1-1=x+21-1\\-x=x+20[/tex]

Subtract x from both sides:

[tex]-x-x=x+20-x\\-2x=20[/tex]

Divide both sides by -2:

[tex]\frac{-2x}{-2}=\frac{20}{-2}\\x=-10[/tex]

Solve for x: 5x + one third(3x + 6) > 14

Answers

Answer:

x > 2

Step-by-step explanation:

Given

5x + [tex]\frac{1}{3}[/tex](3x + 6) > 14 ← distribute and simplify left side

5x + x + 2 > 14

6x + 2 > 14 ( subtract 2 from both sides )

6x > 12 ( divide both sides by 6 )

x > 2

Answer: x > 2  

Step-by-step explanation:

5x + 1/3(3x +6) > 14     Distribute

5x + 1x + 2 > 14     Combine like terms on the left side

  6x + 2 > 14      Subtract 2 from both sides

         -2    -2

   6x > 12      Divde both sides by 6

 x > 2

Find the other endpoint of the line segment with the given endpoint and midpoint.
Endpoint: (5,3). Midpoint: (-5,10)

Answers

Answer:

B

Step-by-step explanation:

because it is (5,15) and B is (5,15)

Solve the following equation. Show all steps.

4(3y – 6) = – 3(8 – 4y)

Answers

Answer:

0=0

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4(3y−6)=−3(8−4y)

(4)(3y)+(4)(−6)=(−3)(8)+(−3)(−4y)(Distribute)

12y+−24=−24+12y

12y−24=12y−24

Step 2: Subtract 12y from both sides.

12y−24−12y=12y−24−12y

−24=−24

Step 3: Add 24 to both sides.

−24+24=−24+24

Answer:

All real numbers

Step-by-step explanation:

So we have the equation:

[tex]4(3y-6)=-3(8-4y)[/tex]

First, distribute the left side:

[tex]12y-24=-3(8-4y)[/tex]

Now, distribute the right:

[tex]12y-24=-24+12y[/tex]

Subtract 12y from both sides. Both sides cancel:

[tex]-24=-24[/tex]

This statement is true.

In other words, our solution is all real numbers.

And we're done!

dinner at a restaurant cost $55.00. the diners decide to leave a 20% tip. what is the cost of their total bill.
A. $11
B. $30
C. $72
D. $66

Answers

Answer:

D. 66

Step-by-step explanation:

20% of 55 is 11

11 + 55 = 66

Answer:

A.11

Step-by-step explanation:

so 55 * 0.2 = 11

20% = 2/10

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