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2 years ago

What is the product? (9t − 4)(−9t − 4) −81t2 − 16 −81t2 16 −81t2 − 72t 16 −81t2 72t 16

1 answer:

5 0

We have to find the product : ( 9 t - 4 ) ( - 9 t - 4 ) = - ( 9 t - 4 ) ( 9 t + 4 ) After that we can use the difference of squares. The formula is: ( a + b ) ( a - b ) = a^2 - b^2. In this case: - ( 9 t - 4 ) ( 9 t + 4 ) = - ( 81 t^2 - 16 ) = - 81 t^2 + 16 . Answer: B ) - 81 t^2 + 16.

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Solve the equation. 4(2m – 1) = 16

ahrayia [7]

Answer:

8m-4=16

8m=20

m=2.5

Step-by-step explanation:

8 0

2 years ago

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What is the distance between two points with coordinates (32,12,5) and (20,3,13) in space?

lozanna [386]

The distance between two points with the given coordinates in space is;

Distance = 17 units

We are given the coordinates;

(32, 12, 5)

(20, 3, 13)

Formula for the distance between two points that have (x, y, z) coordinates is;

d = √((x₂ - x₁)² + (y₂ - y₁)² + (z₂ - z₁)²)

From the equation given to us, we can see that;

x₁ = 32

x₂ = 20

y₁ = 12

y₂ = 3

z₁ = 5

z₂ = 13

Using the formula for the distance, we have;

d = √((20 - 32)² + (3 - 12)² + (13 - 5)²)

d = √(144 + 81 + 64)

d = √289

d = 17

Thus, the distance between the two points is 17 units

Read more at; brainly.com/question/20974053

3 0

2 years ago

How much should you invest now at 7 1/4% simple annual interest in order to earn $190 interest in 4 months?

vlabodo [156]

Answer:

so principal amount is $7862.07

Step-by-step explanation:

Given data

rate = 7*1/4 % = 29/4 %

interest = $190

time = 4 months = 4/12 year

to find out

principal

solution

we know the simple interest formula i.e.

interest = ( principal × rate × time ) /100 ..................1

now put all value rate time and interest in equation 1 we get interest here

interest = ( principal × rate × time ) /100

190 = ( principal × 29/4 × 4/12 ) /100

principal = 190 × 12 ×100 / 29

principal = 7862.068966

so principal amount is $7862.07

8 0

2 years ago

Which of these is incorrect? A) 41,792 < 42,699 B) 42,699 > 43,595 Eliminate C) 42,699 < 44,792 D) 43,595 > 41,792

eimsori [14]

B is the correct answer

4 0

3 years ago

Read 2 more answers

Marco and Drew stacked boxes on a shelf. Marco lifted 9 boxes and Drew lifted 14 boxes. The boxes that Drew lifted each weighed

MrRa [10]

The correct answer is b. 14(m-8).

This is because it says that the weight of the boxes drew lifted were 8 pounds less than what marco lifted. This can be represented by m-8. You then need to multiply this by the amount of boxes that drew lifted, or 14.

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2 years ago