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patriot [66]
2 years ago
10

PLS HURRY TIMED!!! . . . . . . . .

Mathematics
2 answers:
Elan Coil [88]2 years ago
8 0

Answer:

B

Step-by-step explanation:

Start with the diagonal going from upper left to lower right.. That gives -4*6 = - 24

Now calculate the other diagonal

-(3 * - 7 ) = 21

Now add them.

-24 + 21 = -3

Illusion [34]2 years ago
4 0

Answer:

-3

Step-by-step explanation:

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If y = kx, where k is a constant,<br> and y = 30 when x = 6, what is<br> the value of y when x = 3?
Svetradugi [14.3K]

Answer:

Step-by-step explanation:

Actually it's 11 because 11 is technically the same when added to constant of x =6 = 11

7 0
3 years ago
What is the 109th term of the arithmetic sequence {963, 936, 909, 882, …}?
tatyana61 [14]

Answer:

D. a109=-1,953

8 0
3 years ago
The slope point equation of a line passing through the points (-3, -1) and (2, -6) is:
evablogger [386]

Answer:

y = -1x -4

Step-by-step explanation:

The point slope equation is y - y1 = m(x -x1).

You will have to plug in the points (-3, -1) and (2, -6).

y - (-1) = m (x - (-3))

To find "m", find y over x.

m = (y2 - y1) / ( x2 - x1)

m = (-6 + 1)/(2 + 3)

m = -5/5

m = -1

Then plug in "m"

y + 1 = -1(x + 3)

then distribute the "m" into the parenthesis and isolate y or subtract 1 from both sides.

y + 1 = -1x - 3

y = -1x -4

4 0
3 years ago
Use distributive property to simplify the expression: -4(-6p+7)
klemol [59]

Answer:

24p+ -28

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The y coordinate of the vertex of f (x)=-x^2+8x+7 is f(4)
azamat

Hello there.

To answer this question, we need to remember some properties about the vertex of quadratic functions.

Let f(x)=ax^2+bx+c,~a\neq0. Its vertex can be found on the coordinates (x_v,~y_v) such that x_v=-\dfrac{b}{2a} and y_v=-\dfrac{b^2}{4a}+c, in which y_v=f(x_v).

Using the coefficients given by the question, we get that:

x_v=-\dfrac{8}{2\cdot(-1)}\\\\\\ x_v=-\dfrac{8}{-2}\\\\\\ x_v=4

Thus, we have:

y=f(x_v)=f(4)

So the statement is true, because the x coordinate of the vertex of the function is equal to 4.~~\checkmark

7 0
2 years ago
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