All categories

3 years ago

Factorise 4a²_4ab+b²

Mathematics

1 answer:

Natalija [7]3 years ago

7 0

Answer:

$(2a -b)^2$

Step-by-step explanation:

You might be interested in

Please help due right now

Daniel [21]

Answer:

Tree C was the tallest when planted.

Step-by-step explanation:

If you look at the graph you'll see that the height at 0 months is 10 inches.

8 0

3 years ago

Sam is hired for a 20-day period. On days that he works, he earns $60. For each day that he does not work, $30 is subtracted fro

Alenkinab [10]

Answer:

He did not work for 6 days

Step-by-step explanation:

Sam is hired for a 20-day period.

Let x be the no. of days he did not work

So, No. of days he worked = 20-x

he earns per working day = $60

So, he earns for (20-x) days = 60(20-x)

For each day that he does not work, $30 is subtracted from his earnings.

So, Amount deducted for x days = 30x

So, His earning for 20 days = $60(20-x)-30x$

We are given that At the end of the 20-day period, he received $660

So, $60(20-x)-30x=660$

$1200-60x-30x=660$

$1200-90x=660$

$1200-660=90x$

$540=90x$

$\frac{540}{90}=x$

$6=x$

So, he did not work for 6 days

So, Option C is true

5 0

3 years ago

A person can pay $9 for a membership to the history museum and then go to the museum for just $1 per visit. For a member of the

Tamiku [17]

Answer:

Step-by-step explanation:

Step one:

Given that membership is $9 and the cost per visit is $1

let the number of visits be x

and the total cost be y

the total cost for the situation is modeled as

y=mx+c-----equation of a line

Step two:

given that x=23, we can solve for the totals cost as

by substituting we have

y=1*23+9

y=23+9

y=32

<u>The total cost for 23 visits is $32</u>

7 0

3 years ago

Suppose there are 106 (1 million) asteroids that are 0.87 km in radius. If they were all combined into a single sphere, calculat

Eduardwww [97]

Answer:

87km

Step-by-step explanation:

Volume is proportional to radius cubed, so radius is proportional to the cube root of volume.

Increase volume by a factor of 10^6 and radius increases by a factor of the cube root of 10^6, which is 10^(6/3) = 10^2 = 100.

100 * 0.87 km = 87 km

8 0

3 years ago

An airplane climbs at an angle of 11 with the ground

harkovskaia [24]

What's the question?

3 0

3 years ago

Factorise 4a²_4ab+b²​

Factorise 4a²_4ab+b²