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3 years ago

10

Describe and correct the error in finding the slope of the line passing through (0,0) and (4,5)

1 answer:

Verdich [7]3 years ago

6 0

Answer:

Step-by-step explanation:

o,o is in the origin

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Can someone help me find the scale factor and the missing sides please?

Vanyuwa [196]

Answer:

x = 6, y = 45

Step-by-step explanation:

$scale \: factor = \frac{13}{32.5} \\ = \frac{2}{5} \\ \\ \frac{x}{15} = \frac{18}{y} = \frac{2}{5} \\ \\ \implies \frac{x}{15} = \frac{2}{5} \\ \\ x = \frac{2 \times 15}{5} \\ \\ x = 6 \\ \\ \frac{18}{y} = \frac{2}{5} \\ \\ y = \frac{5 \times 18}{2} \\ \\ y = 45$

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2 years ago

The numbers of points scored by a football team in 7 different games are

Gnom [1K]

A. True

B. False

C.true

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3 years ago

What is 4 + 15 × 7 =

il63 [147K]

Answer:

109

Step-by-step explanation:

$4 + 15 \times 7 \\ = 4 + 105 \\ = 109$

5 0

3 years ago

Read 2 more answers

Write an equation for the graph of each line.<br><br>

emmasim [6.3K]

Answer:

5. y = 2x + 4

6. y = (-1/2)x - 2

Step-by-step explanation:

5. We want to find the slope-intercept form of this, which is y = mx + b, where m is the slope and b is the y-intercept.

Slope is change in y divided by change in x. Here, let's take two random points: (-2, 0) and (0, 4). Then we have:

m = (4 - 0) / (0 - (-2)) = 4 / 2 = 2

The slope is thus 2.

The y-intercept is where the line crosses the y-axis. We see it does so at the point (0, 4), so b = 4.

Our equation is thus: y = 2x + 4.

6. Again, let's find the slope. Pick any two points: (-4, 0) and (0, -2). The slope will be:

m = (-2 - 0) / (0 - (-4)) = -2 / 4 = -1/2

Now, look at the point (0, -2); that's where the line crosses the y-axis, so the y-intercept is b = -2.

Thus, the equation is: y = (-1/2)x - 2.

3 0

3 years ago

Read 2 more answers

F(x)= <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%207%7D%7B10%7D%20" id="TexFormula1" title=" \frac{4x - 7}{10} "

Naily [24]

Answer:

To find f-¹(x) of f(x) equate f(x) to y

That's

f(x) = y

So we have

$y = \frac{4x - 7}{10}$

Next interchange the variables that's x becomes y and y becomes x

That's

$x = \frac{4y - 7}{10}$

Next make y the subject

Cross multiply

We have

4y - 7 = 10x

Move -7 to the right side of the equation

4y = 10x + 7

Divide both sides by 4

We have the final answer as

$y = \frac{10x + 7}{4}$

So

$f ^{ - 1} (x) = \frac{10x + 7}{4}$

Hope this helps you

7 0

3 years ago