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Svetllana [295]
3 years ago
11

Write the difference of two algebraic expressions modeled by the algebra tiles. Let $x$ be the variable. Then use the algebra ti

les to simplify the expression. Two groups of algebra tiles. The second is subtracted from the first. The first group has two positive variables tiles and seven positive unit tiles. The second group has two positive variable tiles and four negative unit tiles.
Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

3

Step-by-step explanation:

Who cares? just copy down the answer.

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On the Set of axes below graph the line whose equation is 2y=-3x-2
frutty [35]

Answer:

k = -4

Step-by-step explanation:

The given equation is: 2y = - 3x - 2.

This is written as: 3x + 2y + 2 = 0.

Given the point (2, k) lies on the line given.

That means it should satisfy the given equation.

So, to find the value of 'k', simply substitute the point on the line.

So, it becomes: 3(2) + 2(k) + 2 = 0

⇒ 6 + 2k + 2 = 0

⇒ 2k = - 8

Dividing by 2 throughout, we get: k = - 4

Hence, (2, -4) lies on the line.

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A glass is 1/3 full. Then 40cm3 of orange juice is poured in.
Sphinxa [80]

Answer:

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Step-by-step explanation:
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2 years ago
What is the length, in units, of segment CD?
leonid [27]

Answer:

The answet is C.

Step-by-step explanation:

First, you have to find the angle of ACB using Sine Rule, sinθ = opposite/hypotenuse :

\sin(θ )  =  \frac{oppo.}{hypo.}

let \: oppo. = 4 \\ let \: hypo. = 5

\sin(θ)  =  \frac{4}{5}

θ = {\sin( \frac{4}{5} ) }^{ - 1}

θ = 53.1 \: (1d.p)

Given that line AB is parallel to line CD so ∠C = 90°. Next, you have to find the angle of ACD :

ACD = 90 - 53.1 = 36.9

Lastly, you can find the length of CD using Cosine rule, cosθ = adjacent/hypotenuse :

\cos(θ)  =  \frac{adj.}{hypo.}

let \: θ = 36.9 \\ let \: adj. = 5 \\ let \: hypo. = CD

\cos(36.9  )  =  \frac{5}{CD}

CD \cos(36.9)  = 5

CD =  \frac{5}{ \cos(36.9) }

CD = 6.25 units\: (3s.f)

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3 years ago
The market price of an article is Rs 1600 if it is sold for Rs 1472 what is the discount rate ? solve step ny step​
SVEN [57.7K]

Answer:

poor you

Step-by-step explanation:

3 0
3 years ago
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