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Harrizon [31]
3 years ago
10

Which expression is equivalent to 13(5x+3y)+25y+7 ?

Mathematics
2 answers:
Gekata [30.6K]3 years ago
6 0
The expression is equivalent to 13(5x3y)+25y+7 is D
Westkost [7]3 years ago
3 0

Answer:

Option B is correct.

\frac{5}{3}x+\frac{7}{5}y + 7 is the expression equivalent to  \frac{1}{3}(5x+3y) +\frac{2}{5}y + 7  

Step-by-step explanation:

Given the expression: \frac{1}{3}(5x+3y) +\frac{2}{5}y + 7    ......[1]

The distributive property says that:

a\cdot (b+c) = a\cdot b + a\cdot c

Apply this property on [1] we get;

\frac{5}{3}x+y + \frac{2}{5}y + 7

Like terms are those terms which have the same variables to the same powers.

Combine like terms;

\frac{5}{3}x+\frac{7}{5}y + 7

Therefore, the expression which is equivalent to \frac{1}{3}(5x+3y) +\frac{2}{5}y + 7  is, \frac{5}{3}x+\frac{7}{5}y + 7

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Gavin's dog had a litter of puppies. All of the puppies in this litter were either yellow or black. If there was one less black
mezya [45]

Answer:

Total number of puppies in the litter = 11

Step-by-step explanation:

Let the number of yellow puppies in the litter = y

And the number of black puppies in the litter = b

If there was one less black puppy, ratio of yellow to black puppies = \frac{2}{3}

\frac{y}{b-1}=\frac{2}{3}

2(b - 1) = 3y

3y - 2b = -2 -----(1)

If there was one more black puppy, ratio of yellow puppies to black puppies = \frac{1}{2}

\frac{y}{b+1}=\frac{1}{2}

2y = b + 1

2y - b = 1 -------(2)

Equation (1) - 2× equation (2)

(3y - 2b) - 2(2y - b) = -2 - 2

3y - 4y - 2b + 2b = -4

y = 4

From equation (1),

3×4 - 2b = -2

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4 0
3 years ago
Which of the following sets of inequalities​
Ludmilka [50]

Inequalities help us to compare two unequal expressions. The correct options are 2 and 3.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The inequality for the red portion is,

slope, m = (-2/-4) = 1/2

y-intercept is 2.

y ≤ (1/2)x + 2

The inequality for the blue portion is,
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y > 2x - 1

Hence, the correct options are 2 and 3.

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Adam is an opera singer. Below are the number of times that his voice cracked during each of six concerts
Gre4nikov [31]

In this picture dots are clearly shown the frequency of the concert.

<h3>What is Frequency?</h3><h3>Frequency refers to the number of times an event or a value occurs. A frequency table is a table that lists items and shows the number of times the items occur.</h3>

Here, in given data about the six concerts

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Thus, on number line we mark 2 dots on zero, 2 dots on one, 1 dot on two and 1 dot on 3.

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3 0
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FrozenT [24]

Answer:

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In this question:

Point to dilate: (x,\, y) = (-8,\, 0).

Scale factor: r = 0.25.

Center of dilation: (a,\, b) = (0,\, 0).

The resultant point would be:

(0 + 0.25\, (-8 - 0),\, 0 + 0.25\, (0 - 0)), which simplifies to (-2,\, 0).

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