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4 years ago

Help!!!! I will give you brainiest!!!! Pls find the solution of y=3x+5 for x=-2

Mathematics

2 answers:

Sergeeva-Olga [200]4 years ago

5 0

Answer:

I think the answer is B

can you also please mark me as brainliest

Elden [556K]4 years ago

5 0

Answer:

The slope-intercept form is y=mx+b y = m x + b , where m is the slope and b is the y-intercept. Using the slope-intercept form, the slope is 3 .

You might be interested in

What is the slope of the line that passes through the points (-9, 8) and (-3, -1)?

Finger [1]

Answer: -3/2

Step-by-step explanation: the slope is calculated by the formula:

(y2 - y1)/(x2-x1)

So, (-1-8)/(-3-(-9)) = -9/6 = -3/2

8 0

3 years ago

Explain why the amount of money in the account at the end of t years is given by the formula: P=P0(1+r/n)^nt

miskamm [114]

This is the formula you use for someone investing in money. The formula is actually supposed to be: A=P(1+ $\frac{r}{n}$ ) $^{n(t)}$ .
A is the total amount, P is the principal amount (the initial; original), r is percent (%) rate in decimal form, n is frequency, and t is the amount of years.

6 0

4 years ago

Y = x + 8 4x – 2y = -12

Paha777 [63]

Answer:

x = 14

y = 22

Step-by-step explanation:

y = x + 8

4x - 2y = -12

Solve

_____________

Since we see that the first equation has y alone, we can substitute it into the values of y in the second equation.

4x - 2(x + 8) = -12

Distribute :

4x - (2(x) + 2(8)) = -12

4x - 2x +16 = -12

Combine like terms :

2x + 16 = -12

Subtract 16 from both sides :

2x = -28

Divide 2 from both sides to get x alone :

x = 14

Now that we know what x is, substitute it in the first equation to get y :

y = (14) + 8

y = 22

6 0

3 years ago

Read 2 more answers

How do you find 3w-6w+3w×7×7×6×5÷9+2

Viktor [21]

Let's remember orders of operations as we go through the craze of this problem.
We need to multiply or divide from left to right.
3w-6w+3w×7×7×6×5÷9+2
3w-6w+21w×7×6×5÷9+2
3w-6w+147w×6×5÷9+2
3w-6w+882w×5÷9+2
3w-6w+4,410w÷9+2
3w-6w+490w+2
-3w+490w+2
487w+2
To check that we simplified the expression right, I like to put in 1 for w and test it in the original expression and then the simplified expression (not needed).
487+2=489
3-6+3×7×7×6×5÷9+2=489
So that expression equals 487w+2.

3 0

4 years ago

URGENT! if ABCD is dilated by a factor of 2, the coordinate of A' would be:

koban [17]

After dilating the quadrilateral ABCD by a factor of 2 and with respect to the origin, the point A(x, y) = (-3, -1) is transformed into the point A'(x, y) = (-9, -3).

<h3>How to determine the coordinates of an image after applying a rigid transformation</h3>

First of all, dilation is a type of rigid transformation. Rigid transformations are transformations applied on geometric loci such that the Euclidean distance at every point of the construction is conserved. Vectorially speaking, the dilation is expressed by the following formula:

A'(x, y) = A(x, y) + k · [A(x, y) - O(x, y)] (1)

Where:

A(x, y) - Original point
O(x, y) - Center of dilation
A'(x, y) - Resulting point
k - Dilation factor

If we know that A(x, y) = (-3, -1), k = 2 and O(x, y) = (0, 0), then the coordinates of A' are:

A'(x, y) = (-3, -1) + 2 · [(-3, -1) - (0, 0)]

A'(x, y) = (-3, -1) + (-6, -2)

A'(x, y) = (-9, -3)

After dilating the quadrilateral ABCD by a factor of 2 and with respect to the origin, the point A(x, y) = (-3, -1) is transformed into the point A'(x, y) = (-9, -3).

To learn more on dilations: brainly.com/question/13176891

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4 0

2 years ago