Which statement correctly describes the expression (-8)(-9)?

A. 30 B.45 C. 90 D. 60

BabaBlast [244]

Answer:

C. 90

Step-by-step explanation:

6 0

3 years ago

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(a) Write down the gradient of the line with equation y = 7 - 4x The line L passes through the points with coordinates (- 3, 1)

lesya [120]

Note: Let us consider, we need to find the gradient of line L.

Given:

The given equation of a line is:

$y=7-4x$

The line L passes through the points with coordinates (- 3, 1) and (2, - 2).

To find:

The gradient of the given line and the gradient of line L.

Solution:

Slope intercept form of a line is:

$y=mx+b$ ...(i)

We have,

$y=7-4x$ ...(ii)

On comparing (i) and (ii), we get

$m=-4$

Therefore, the gradient of the given line is -4.

The line L passes through the points with coordinates (- 3, 1) and (2, - 2). So, the gradient of line L is:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m=\dfrac{-2-1}{2-(-3)}$

$m=\dfrac{-3}{2+3}$

$m=\dfrac{-3}{5}$

Therefore, the gradient of the line L is $\dfrac{-3}{5}$ .

6 0

3 years ago

Why are the flat surfaces on a rectangular prism called faces

Amanda [17]

Because they act like a face that provides recognition to the shape.

5 0

3 years ago

What is the mean of the data set: 1,2,4,1,2,3,3,2 ? *

Jlenok [28]

It’s B I’m sure :) yeah

3 0

3 years ago

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Bakit kinailangang umalis ng binatang Brahman sa kanilang bayan? Makatwiran ba ang

o-na [289]

Answer:

Bakit kinailangang umalis ng binatang Brahman sa kanilang bayan? Makatwiran ba ang

kanyang paglisan? IpaliwanagBakit kinailangang umalis ng binatang Brahman sa kanilang bayan? Makatwiran ba ang

kanyang paglisan? Ipaliwanag

Step-by-step explanation:

Bakit kinailangang umalis ng binatang Brahman sa kanilang bayan? Makatwiran ba ang

kanyang paglisan? IpaliwanagBakit kinailangang umalis ng binatang Brahman sa kanilang bayan? Makatwiran ba ang

kanyang paglisan? Ipaliwanag

4 0

3 years ago