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3 years ago

Evaluate the expression for b = -6. 3b =

Mathematics

2 answers:

ch4aika [34]3 years ago

6 0

Answer:

-18

Step-by-step explanation:

Hope that helps

You do 3(-6) to get neg 18

kolbaska11 [484]3 years ago

5 0

Answer:

-18

Step-by-step explanation:

-6 x 3 = - 18.

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ANSWER QUICK!!!!

deff fn [24]

Answer:

Step-by-step explanation:

When we write an equation, we look for something like is or equals

A.twice as much as a number 2x

B.12 less than a number x-12

C.half of a number is 15 1/2x =15

D.the difference of 20 and a number? 20-x

A,B, and D are expressions

8 0

3 years ago

Read 2 more answers

Just number 9 would be fine please but also if you could number 10 would help

topjm [15]

Answer:

9. a = -7

10. x = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define equation

a + 6a - 14 = 3a + 6a

Step 2: Solve for a

Combine like terms: 7a - 14 = 9a
Subtract 7a on both sides: -14 = 2a
Divide 2 on both sides: -7 = a
Rewrite: a = -7

Step 3: Check

Plug in a into the original equation to verify it's a solution.

Substitute in a: -7 + 6(-7) - 14 = 3(-7) + 6(-7)
Multiply: -7 - 42 - 14 = -21 - 42
Subtract: -49 - 14 = -63
Subtract: -63 = -63

Here we see that -63 is equal to -63.

∴ a = -7 is a solution of the equation.

Step 4: Define equation

-12 - 4x = 8x + 4(1 - 7x)

Step 5: Solve for x

Distribute 4: -12 - 4x = 8x + 4 - 28x
Combine like terms: -12 - 4x = -20x + 4
Add 20x on both sides: -12 + 16x = 4
Add 12 on both sides: 16x = 16
Divide 16 on both sides: x = 1

Step 6: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: -12 - 4(1) = 8(1) + 4(1 - 7(1))
Multiply: -12 - 4 = 8 + 4(1 - 7)
Subtract: -16 = 8 + 4(-6)
Multiply: -16 = 8 - 24
Subtract: -16 = -16

Here we see that -16 does indeed equal -16.

∴ x = 1 is a solution of the equation.

7 0

3 years ago

Last year Tony's income was $52,000, while his total expenses were $53,800. Use the expression below, where I = Income and E= Ex

hoa [83]

Answer:

???

Step-by-step explanation:

5 0

3 years ago

Angel and Jayden were at track practice.The track is 25 kilometers around.

guapka [62]

Answer:

1. Angel - 0.08 mins, Jayden - 0.067 mins

2. Angel - 12.5 km, Jayden - 15 km

3. Jayden runs faster.

Step-by-step explanation:

The length of the track (1 lap) is 25 km.

Angel ran 1 lap in 2 mins. That means he ran 25 km in 2 mins.

Jayden ran 3 laps in 5 mins. That means he ran 75 km (3 * 25 km) in 5 mins.

1. To find the time it takes to run 1 km, we divide the total time taken by the total distance run.

The number of minutes it takes Angel to run 1 km will be:

T = 2 / 25 = 0.08 minutes

The number of minutes it takes Jayden to run 1 km will be:

T = 5 / 75 = 0.067 minutes

2. To calculate the distance they run in 1 min, we divide the total distance run by the total time taken.

The distance Angel runs in 1 min is:

D = 25 / 2 = 12.5 km

The distance Jayden runs in 1 min is:

D = 75 / 5 = 15 km

3. Jayden runs faster because he runs more kilometres per minutes (15 km/min) than Angel (12.5 km/min).

In other words, Jayden clocks a faster speed than Angel.

5 0

3 years ago

The number of burritos Delainy ate on Tuesday is the same as the number of burritos Louie ate on Wednesday. On Tuesday, Delainey

horrorfan [7]

Answer:

The total number of burritos consumed is 68 and an equation to determine the total number of burritos consumed is $\frac{1}{2}x+16=\frac{3}{4}x-1$

Step-by-step explanation:

Let x be the total number of burritos consumed

We are given that On Tuesday, Delainey ate 16 more than 1/2 the total number of burritos consumed

So, Number of burritos ate by Delainey on Tuesday= $\frac{1}{2}x+16$

We are also given that Louie ate 1 less than 3/4 of the total number of burritos consumed.

So, Number of burritos ate by Louie on Wednesday = $\frac{3}{4}x-1$

We are given that The number of burritos Delainy ate on Tuesday is the same as the number of burritos Louie ate on Wednesday.

So, $\frac{1}{2}x+16=\frac{3}{4}x-1\\1+16=\frac{3}{4}x-\frac{1}{2}x\\17=\frac{x}{4}\\68=x$

Hence the total number of burritos consumed is 68 and an equation to determine the total number of burritos consumed is $\frac{1}{2}x+16=\frac{3}{4}x-1$

6 0

3 years ago