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Nina [5.8K]
3 years ago
8

How do you write six times the quantity two x plus three y with numbers??

Mathematics
1 answer:
tresset_1 [31]3 years ago
3 0

Answer:

12x + 18y

Step-by-step explanation:

Lets first write the quantity "two x plus three y", this means, that we have x and y as unknowns. x is 2 times, so we have 2x; and y is 3 times, so he have 3y:

2x + 3y

Additionally we have that this quantity is six times, what means that it is multiplied by a number 6:

6(2x +3y)

If you like, we can apply the distributive property that means that given any three numbers a, b, c we have that a(b+c)=ab + ac. In our case a is 6, b is 2x and c is 3y. Thus, operating:

6(2x +3y) = 6*2x + 6*3y = 12x + 18y

So, "six times the quantity two x plus three y" is 12x + 18y

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Solve the following system of equations. Express your answer as an ordered
exis [7]

Answer:

I'm not going to give you an exact answer because there could be many different ones

Step-by-step explanation:

The equations can be rewritten as:

2x - 7 = 7y

-4x + 19 = 3y

then you just insert a value for x and get the answer.

8 0
3 years ago
PLEASE PLEASE PLEASE HELP ME
lubasha [3.4K]

Answer:

CE = 17

Step-by-step explanation:

∵ m∠D = 90

∵ DK ⊥ CE

∴ m∠KDE = m∠KCD⇒Complement angles to angle CDK

In the two Δ KDE and KCD:

∵ m∠KDE = m∠KCD

∵ m∠DKE = m∠CKD

∵ DK is a common side

∴ Δ KDE is similar to ΔKCD

∴ \frac{KD}{KC}=\frac{DE}{CD}=\frac{KE}{KD}

∵ DE : CD = 5 : 3

∴ \frac{KD}{KC}=\frac{5}{3}

∴ KD = 5/3 KC

∵ KE = KC + 8

∵ \frac{KE}{KD}=\frac{5}{3}

∴ \frac{KC+8}{\frac{5}{3}KC }=\frac{5}{3}

∴ KC + 8 = \frac{25}{9}KC

∴ \frac{25}{9}KC - KC=8

∴ \frac{16}{9}KC=8

∴ KC = (8 × 9) ÷ 16 = 4.5

∴ KE = 8 + 4.5 = 12.5

∴ CE = 12.5 + 4.5 = 17

7 0
3 years ago
Solve logx + log(x-3) = 1
yaroslaw [1]
=log10x(x-3)=1
=x(x-3)=10
=x^2-3x=10
Make this a quadratic equation
x^2-3x-10=0
Factorize
=(x+2)(x-5)=0
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8 0
4 years ago
If x = 7 units, y = 3 units, and h = 9 units, find the area of the trapezoid shown above using decomposition.
Tju [1.3M]

Answer:

Area = 45

Step-by-step explanation:

<u><em>Solve:</em></u>

<em>Now using the formula if:</em>

<em>x = 7</em>

<em>y = 3</em>

<em>h = 9</em>

<em>Area = (X+Y)(h)</em>

<em>Area = (7+3)(9)</em>

<em>Area = (10)(9)</em>

<em>Area = 90</em>

<em />

<u><em>Kavinsky</em></u>

5 0
3 years ago
10 POINTS + BRAINLIEST ANSWER!!
belka [17]
The answer would be C. 
8 0
3 years ago
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