All categories

2 years ago

Use a table to multiply (–3a2)(a – b).

Mathematics

1 answer:

svetlana [45]2 years ago

3 0

Answer:

$- 6 {a}^{2} + 6ab$

Step-by-step explanation:

$( - 3a2)(a - b)$

$- 6 {a}^{2} + 6ab$

You might be interested in

Use a ratio to compare this quantity 3 kg ; 200g

Nana76 [90]

9514 1404 393

Answer:

15 : 1

Step-by-step explanation:

Each kg is 1000 g, so the ratio is ...

3000 g : 200 g = 30 : 2 = 15 : 1

3 kg is 15 times 200 g.

6 0

3 years ago

Read 2 more answers

Find the slope of the line that passes through the two points.<br> (12,-5) and (10,-4)

hichkok12 [17]

Given parameters:

First point = (12, -5)

Second point = (10, -4)

Unknown:

Slope of the line = ?

Slope is simply the vertical rise divided by the horizontal distance.

Slope = $\frac{Rise }{horizontal distance}$

Simply to find slope;

Slope = $\frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

First point = (12, -5), x₁ = 12 and y₁ = -5

Second point = (10, -4), x₂ = 10 and y₂ = -4

Input the parameters:

Slope = $\frac{-4 -(-5)}{10 - 12}$

= $\frac{-4 + 5}{-2}$

= - $\frac{1}{2}$

The slope of the line is - $\frac{1}{2}$

7 0

3 years ago

At a certain electronics company, the daily output Q is related to the number of people A on the assembly line by Q=600+√(A+41).

Ber [7]

Answer:

$A=400\ people$

Step-by-step explanation:

we have

$Q=600+\sqrt{A+41}$

where

Q -----> is the daily output

A -----> is the number of people

For Q=621

Find the value of A

substitute and solve for A

$621=600+\sqrt{A+41}$

Subtract 600 both sides

$621-600=\sqrt{A+41}$

$21=\sqrt{A+41}$

squared both sides

$21^{2} ={A+41}$

$441={A+41}$

Subtract 41 both sides

$441-41=A$

Rewrite

$A=400\ people$

3 0

3 years ago

I need help.like now please help me !!!!!!!!!

koban [17]

Use proportions for all of them, for #1 use the proportion 12/30 = 9/a based on corresponding sides and then cross multiply. a=22.5 For #2 use the proportion y/35 = 64/40 based on corresponding sides and then cross multiply, y=56 For #3 use the proportion 42/? = 54/36 and then cross multiply, ?=28

7 0

3 years ago

There is some evidence suggesting that you are likely to improve your test score if you rethink and change answers on a multiple

kiruha [24]

Answer:

trust none

Step-by-step explanation:

5 0

3 years ago