2 years ago

Can any help me please

1 answer:

4 0

A = 8i + 6j
b = 4i + 5j

ab = (8i + 6j)(4i + 5j)
ab = 8i(4i + 5j) + 6j(4i + 5j)
ab = 8i(4i) + 8i(5j) + 6j(4i) + 6j(5j)
ab = 32i² + 40ij + 24ij + 30j²
ab = 32i² + 64ij + 30j²
ab = <32, 30>

The answer is D.

You might be interested in

5q greater than or equal to 8q -3/2

kakasveta [241]

5q ≥ 8q - 3/2

Add 3/2 to both sides.

3/2 + 5q ≥ 8q

Subtract 5q from both sides.

3/2 ≥ 3q

Multiply both sides by 2.

3 ≥ 6q

Divide both sides by 6.

0.5 ≥ q.

The value of q is less than or equal to 0.5.

8 0

2 years ago

Solving Simultaneously equations 3. 2x + 3y = 1 -x + 2y = - 4

enot [183]

Answer:

2x5y7

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Subtract the following decimals 1. 19.87 - 8.54 2. 7.93 - 2.03 3. 96.6 - 88.5

Lina20 [59]

Answer:

the answer is

1. 11.33

2. 5.9

3. 8.1

7 0

2 years ago

All of the following operations are used to solve for X in the equation below except one. Which one is it ? 9x-2=4x+8 A. Additio

gtnhenbr [62]

Step-by-step explanation:

9x - 2 = 4x + 8 → (9-4)x = 8 + 2 → 5x = 10 → x = 10/2 = 5

C. multiplication

Multiplication not used

5 0

2 years ago

00:00

lidiya [134]

Answer:

$4\frac{3}{8}$ yards of wood

Step-by-step explanation:

The correct question is Hakim is making birdhouses. Each birdhouse uses 7 /8 yard of wood. What is the total length of wood Hakim will need to build 5 birdhouses?

Answer: Given that the amount of wood need to produce one bird house is 7/8 yard, for 5 birdhouse, the amount of wood needed would be 5 times the number needed for one birdhouse. It is given by:

Amount of wood needed for 5 birdhouse = 5 × amount of wood for 1 birdhouse

Amount of wood needed for 5 birdhouse = 5 × 7/8 yards = 35/8 = $4\frac{3}{8}$ yards of wood

6 0

3 years ago