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3 years ago

12>-4y+7 I cant figure it out

Mathematics

1 answer:

Brut [27]3 years ago

6 0

Answer:

y > -5/4

Step-by-step explanation:

12 > -4y + 7

Subtract 7 from both sides:

5 > -4y

Divide both sides by -4 (remember to flip the sign when multiplying or dividing by a negative number):

-5/4 < y

Here's another way to solve it. First, add 4y to both sides.

12 + 4y > 7

Subtract 12 from both sides:

4y > -5

Divide by 4:

y > -5/4

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3 years ago

Which of the following conditions would guarantee that triangles are identical?

7nadin3 [17]

Answer: Two triangles have the same side lengths (Ex: both triangles have sides 3, 4, and 5 cm)

Step-by-step explanation:

1) This would guarantee similarity, but not necessarily that they are identical.

2) The angle has to be included between the two sides, which is not specifed.

3) This would work (SSS congruence)

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3 years ago

Answer the following equations:

Andrew [12]

Step-by-step explanation:

3(t+5) = 9

3t+15 = 9

3t = -6

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2(f-7) = -10

2f - 14 = -10

2f = 4

f = 2

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-c = -5

c = 5

-6(2t + 8) = -84

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7(3w + 8)/3 = -9

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2 years ago

Find the slope given the points (-5,-3) and (2,4)

Setler79 [48]

Answer:

The slope of the line is 1.

Step-by-step explanation:

We are given two coordinate points:

(-5, -3)
(2, 4)

We can use the rate of change formula to find the slope of the points.

$\displaystyle \frac{\triangle y}{\triangle x}$

In mathematics, coordinate pairs are labeled as:

$(x_1, y_1) \ \text{and} \ (x_2, y_2)$

Therefore, we can relabel our points:

$x_1 = -5$
$y_1 = -3$
$x_2 = 2$
$y_2 = 4$

After we do this, we can expand the rate of change formula:

$\displaystyle m = \frac{y_2-y_1}{x_2-x_1}$

Now, we can use simple substitution to solve for m, or the slope.

$\displaystyle m = \frac{y_2-y_1}{x_2-x_1}\\\\m = \frac{4-(-3)}{2-(-5)}\\\\m = \frac{7}{7}\\\\m = 1$

Therefore, the slope of the line is 1.

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