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Dafna1 [17]
3 years ago
9

Drag each equation to show if it could be a correct first step to solving the equation 3(x+8)=42.

Mathematics
1 answer:
lubasha [3.4K]3 years ago
6 0

Answer:

The 2nd, 3rd, and last equations could be a possible first step.

The rest are no's.

Step-by-step explanation:

In the second equation, the 3 was distributed.

In the 3rd, it was separately distributed.

In the last, both sides were divided by 3.

The rest are knows because every equation gives us enough information.

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20 points!! Pls help
Studentka2010 [4]

Answer:

<h3>(-4, 1)</h3>

Step-by-step explanation:

-x-3=y, therefore x = -y-3

-3x - 8y = 4

Find the value of y

Substitute the x in -3x - 8y = 4 with -y-3

We get

-3·(-y-3) - 8y = 4

3y + 9 - 8y = 4

-5y = 4-9

-5y = -5

<h3>y = 1</h3>

_______________

Find the value of x

x = -y-3

x = -1-3

<h3>x = -4</h3>

_______________

Answer (x, y) =

<h3>(-4, 1)</h3>

_____________________

#IndonesianPride - kexcvi

5 0
3 years ago
Read 2 more answers
Quadrilateral PAID is a rectangle whose diagonals have the endpoints P(-3, -2)I(4, -7) and A(4, -2)D(-3, -7). Find the diagonals
BARSIC [14]

Answer:

(0.5,-4.5)

Step-by-step explanation:

The given rectangle has diagonals have the endpoints P(-3, -2) ,I(4, -7) and A(4, -2) ,D(-3, -7)

The diagonals of the rectangle bisect each other so we use the midpoint formula to find their point of intersection.

The midpoint formula is;

(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})

We use any pair of endpoints of the diagonals to find the point of intersection.

Using A(4, -2) ,D(-3, -7)

(\frac{4+-3}{2},\frac{-2+-7}{2})

(\frac{1}{2},\frac{-9}{2})

or

(0.5,-4.5)

7 0
4 years ago
Need help again please...
Greeley [361]
40 - 4 = 36

average = 36/9 = 4

answer
average number of members who joined the math club is 4 per month

5 0
3 years ago
Sam has 15 identical rectangular windows in his home. The length of each window is twice the width, and the area of each window
marshall27 [118]
The answe would be 300 because, the perimeter of the windows is 12, then you have to multiply 25 to 12 then bam you get 300, yay!

5 0
3 years ago
Someone answer this question I know your reading this.
IgorC [24]

Answer: A.

Step-by-step explanation:

To answer this, you must first understand what fractional exponents mean.

An exponent of 1 is simply the base itself. 7^1 = 7.

An exponent of 2 is squaring the base: 7^2 = 49.

An exponent of 1/2 is taking the square root of the base: 7^(1/2) = sq root of 7

Therefore, an exponent of 1/3 is taking the cube root of the base.

In this case, the base is 2.03 * t.

Therefore, this can be represented as the cube root of the product of 2.03 and the age of the mammal, so the answer is A.

3 0
3 years ago
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