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3 years ago

Plz help is this correct plz help ASAP

Mathematics

2 answers:

Marat540 [252]3 years ago

7 0

1 ten and 3 ones = 13 in total

neonofarm [45]3 years ago

6 0

Answer:

Step-by-step explanation:

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(a+4)² - 3² Factored out

uranmaximum [27]

Answer:

$a = - 7$

$a = - 1$

Step-by-step explanation:

$(a+4) {}^{2} - 3 {}^{2} \\ a {}^{2} + 8a + 16 - 9 \\ a {}^{2} + 8a + 7 \\ a {}^{2} + a + 7a + 7 \\ a(a + 1) + 7(a + 1) \\ (a + 7)(a + 1) \\ a + 7 = 0 \: \: \: \: or \: \: \: \: a + 1 = 0 \\ a = - 7 \: \: \: \: \: \: \: \: or \: \: \: a = - 1$

8 0

3 years ago

HELPP PLEASE ! This mapping shos a functional reationship.

Elina [12.6K]

The answer is 3 // The ones in blue are the domain and the ones in red are the range

4 0

3 years ago

HELPPPPP!!!!!!!!!!!!!!!!!!!

8090 [49]

A trinomial is a polynomial with three terms. It can be determined if it is a difference of two squares when you factor it.

The resulting factor of a trinomial that is a difference of two squares is: a² – b² = (a + b)(a – b) or (a – b)(a + b)

You will notice that the middle term is missing. This means that the middle term zeroes out as a result of having the same number of different signs (+ and -)

5 0

3 years ago

Consider the following expression. 5(1+6) (2b+7) Select all of the true statements below.

Vesna [10]

Answer:

Option B
Option C
Option E

Explanation:

Option B is true because both of the terms are constants. Hence, they are like terms.
Option C is true because the coefficient of a term is basically the constant. If there is no constant, then the coefficient is 1.
Option E is true because the expression has been multiplied by 5.

6 0

3 years ago

A rectangular box has a square base. The combined length of a side of the square base, and the height is 20 in. Let x be the len

aniked [119]

Answer:

a. V = (20-x) $x^{2}$ $in^{3}$

b . 1185.185 $in^{3}$

Step-by-step explanation:

Given that:

The height: 20 - x (in )
Let x be the length of a side of the base of the box (x>0)

a. Write a polynomial function in factored form modeling the volume V of the box.

As we know that, this is a rectangular box has a square base so the Volume of it is:

V = h * $x^{2}$ $in^{3}$

<=> V = (20-x) $x^{2}$ $in^{3}$

b. What is the maximum possible volume of the box?

To maximum the volume of it, we need to use first derivative of the volume.

<=> dV / Dx = -3 $x^{2}$ + 40x

Let dV / Dx = 0, we have:

-3 $x^{2}$ + 40x = 0

<=> x = 40/3

=>the height h = 20/3

So the maximum possible volume of the box is:

V = 20/3 * 40/3 *40/3

= 1185.185 $in^{3}$

7 0

3 years ago