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2 years ago

HELP PLS!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Rama09 [41]2 years ago

6 0

Domain: {-5, 7}
Range: {-9, 4, 8}

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What is the volume of this cuboid? Please help me!!!?!

Snowcat [4.5K]

The formula of a volume of a cuboid:

$V=lwh$

l - length

w - width

h - height

We have:

l = (x + 4) cm

w = (x + 1) cm

h = 3 cm

Substitute:

$V=(x+4)(x+1)(3)$ use distributive property

$V=(x+4)(3x+3)$

$V=(x)(3x)+(x)(3)+(4)(3x)+(4)(3)$

$V=3x^2+3x+12x+12$ combine like terms

$\boxed{V=3x^2+15x+12}$

6 0

3 years ago

Sharing birthday Alana is 8 and mom is 32.. Can Alana mom age be 3 times her own age?

Anna007 [38]

No Alana's mom cannot be 3 times her age because 8 multiplied by 3 equals 24, Alana's mom would have to be 4 times her age. (8 multiplied by 4 equals 32)

4 0

2 years ago

Please help me , i have no idea what the answer is

liraira [26]

So,

We see in Statement 3 that WY = WY. This seems obvious, but it ensures that quantities don't change their values. We call this property of something being equal to itself, the "reflexive property."

The correct answer is the third option.

4 0

3 years ago

Ume

katrin2010 [14]

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

x + 2y = 10 → (1)

2y² - 7y + x = 0 → (2)

Rearrange (1) expressing x in terms of y by subtracting 2y from both sides

x = 10 - 2y → (3)

Substitute x = 10 - 2y into (2)

2y² - 7y + 10 - 2y = 0

2y² - 9y + 10 = 0 ← in standard form

(y - 2)(2y - 5) = 0 ← in factored form

Equate each factor to zero and solve for y

y - 2 = 0 ⇒ y = 2

2y - 5 = 0 ⇒ 2y = 5 ⇒ y = $\frac{5}{2}$

Substitute these values into (3) for corresponding values of x

y = 2 → x = 10 - 4 = 6 ⇒ (6, 2 ) → B

y = $\frac{5}{2}$ → x = 10 - 5 = 5 ⇒ (5, $\frac{5}{2}$ ) → A

8 0

2 years ago

I need the ordered pairs for y-3x<10

adelina 88 [10]

Answer:

(0, 5) and (5,0) are two possibilities.

Step-by-step explanation:

There is an infinite number of ordered pairs that satisfy your inequality.

To help you pick some ordered pairs, you could plot the inequality (see the graph below).

Any point within the shaded area is a solution.

Pick an ordered pair, insert it into the equation, and check if the inequality is true.

Here are two examples.

For (5, 0):

0 – 3×5 < 10

0 - 15 < 10

-15 < 10 True

For (0, 5):

5 – 3×0 < 10

5 – 0 < 10

5 < 10 True

The ordered pairs (0, 5) and (5,0) are part of the solution set of the equation y – 3x < 10.

6 0

3 years ago