Can someone please help me ?

lesya [120]

The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3

7 0

3 years ago

Read 2 more answers

Consider the vector add = a + b = [13 12 11 10 10] and sub = a - b = [-11 - 6 - 14 8]. Find the vector a and b.

prisoha [69]

Answer:

a = [1 3 5 7 9] and b = [12 9 6 3 1]

Step-by-step explanation:

The addition of two vectors a and b is defined as

a + b = [13 12 11 10 10] .... (1)

The subtraction of two vectors a and b is defined as

a - b = [-11 - 6 - 1 4 8] .... (2)

After adding (1) and (2), we get

(a + b) + (a - b)= [13 12 11 10 10] + [-11 - 6 - 1 4 8]

On simplification we get

2a = [13-11 12-6 11-1 10+4 10+8]

2a = [2 6 10 14 18]

Divide both sides by 2.

a = [1 3 5 7 9]

Substitute the value of vector a in equation (1).

[1 3 5 7 9] + b = [13 12 11 10 10]

Subtract vector a from both sides.

b = [13 12 11 10 10] - [1 3 5 7 9]

On simplification we get

b = [13-1 12-3 11-5 10-7 10-9]

b = [12 9 6 3 1]

Therefore the vectors a and b are defined as a = [1 3 5 7 9] and b = [12 9 6 3 1].

4 0

2 years ago

1 7/8 divided by 2 8/11

Bingel [31]

Answer: 11/16

Turn 1 7/8 into an Improper Fraction

Multiply 1×8 and get 8. Now add 7 and get 15.

1 7/8 = 15/8

Turn 2 8/11 into an Improper Fraction

Multiply 2×11 and get 22. Now add 8 and get 30.

2 8/11 = 30/11

Do Keep Change Flip

Keep: 15/8

Change ÷ into ×

Flip: 30/11 into 11/30

Your New Problem: 15/8×11/30

Multiply

15/8×11/30=165/240

Simplify

165/240÷15/15=11/16

3 0

3 years ago

Read 2 more answers

6. Carla runs 3 miles in 30 minutes.

NARA [144]

Answer:

Carla ran 0.1 miles per minute.

Step-by-step explanation:

To solve this, we need to use the distance formula.

The formula is d=rt, where d is the distance traveled, r is the rate in which the distance is traveled, and t is the amount of time it took to go that distance. So lets plug it all in.

d=rt

3=(r)(30)

Now, we need to do the inverse of multiplying 30 to both sides, which would be the same as dividing by 30 on both sides.

3/30=(r)(30/30)

0.1=r

The rate is 0.1. Carla ran 0.1 miles per minute.

3 0

2 years ago

Sam manages a clothing boutique and has an annual salary of $23600. Doug works in a shoe store and is paid 9.40/h each week. Who

just olya [345]

Answer:

Sam earns more money than Doug in an year

Step-by-step explanation:

The complete question is -

Sam manages a clothing boutique and has an annual salary of $23600. Doug works in a shoe store and is paid 9.40/h for 40 hours each week. Who has the higher gross income each month?

Solution -

Sum of money (in dollars) earned by Doug in one week is equal to

$= 9.40 *40\\= 376$

Sum of money (in dollars) earned by Doug in one year is equal to

$= 376 * 52 \\= 19552$

Hence, Sam earns more money than Doug in an year

3 0

3 years ago