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2 years ago

Factor the binomial. 4z2 − 25 4z2 − 25 =

Mathematics

1 answer:

svetoff [14.1K]2 years ago

6 0

$4z^2-25\\\\=(2z)^2-5^2\\\\=(2z+5)(2z-5)$

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I’m confused on #2 can some one please help

Ipatiy [6.2K]

Answer: The answer is A

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3 years ago

An array of 2 rows of 7 dots has a total of 14 dots. it is called a 2 by __ array

max2010maxim [7]

It is called a 2 by 7 array.

3 0

3 years ago

Read 2 more answers

What is the value of 2 in 0.259?

anastassius [24]

Ir's 0.2
or two tenths.
You can tell because it's in the tenths digit place, right next to the decimal.

3 0

4 years ago

Ahmed, Walid and Faisal made $1446 profit from selling used books. If Ahmed to receive double amount of Faisal and Walid to rece

crimeas [40]

Answer:

Faisal receives $241

Ahmed receives $482

Walid receives $723

Step-by-step explanation:

I am going to build a system of equations to solve this question.

We have that:

x is the amount that Faysal received.

y is the amount that Ahmed received.

z is the amount that Walid received.

Ahmed, Walid and Faisal made $1446 profit from selling used books.

This means that

$x + y + z = 1446$

Ahmed to receive double amount of Faisal

This means that $y = 2x$

Walid to receive triple amount of Faisal.

This means that $z = 3x$

$x + 2x + 3x = 1446$

$6x = 1446$

$x = \frac{1446}{6}$

$x = 241$

$y = 2x = 2*241 = 482$

$z = 3x = 3*241 = 723$

Faisal receives $241

Ahmed receives $482

Walid receives $723

8 0

3 years ago

For the last three days, it has rained 0.13 inches, 0.08 inches, and 0.18 inches. What is the best estimate of the total rainfal

Natali [406]

Answer:

(D) . The best estimate of the total rainfall is 0.4 inches.

Step-by-step explanation:

Here, as given in the data:

The rainfall on the first day = 0.13 inches

Now, the 'nearest tenth' estimation of 0.13 = 0.10 as ( 3 < 5)

So, the estimated rainfall on first day = 0.10 inches

The rainfall on the second day = 0.08 inches

Now, the 'nearest tenth' estimation of 0.08 = 0.10 as ( 8 > 5)

So, the estimated rainfall on second day = 0.10 inches

The rainfall on the third day = 0.18 inches

Now, the 'nearest tenth' estimation of 0.18 = 0.20 as ( 8 > 5)

So, the estimated rainfall on third day =0.20 inches

So, total estimated rainfall = Estimated rainfall on ( first + second + third day)

= 0.10 inches + 0.10 inches + 0.20 inches

= 0.40 inches

Hence, the best estimate of the total rainfall is 0.4 inches.

6 0

3 years ago