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3 years ago

Using the function f(x) = -3 x -5, calculate f(-7)

Mathematics

1 answer:

yan [13]3 years ago

7 0

Here you are , x= 16

Read the pic

Can you mark me BRAINLEST?

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VikaD [51]

Answer:

Step-by-step explanation:

Since all triangles have to add up to 180, we can do the sum of the two angles we know minus 180. 90+61=151, 180-151=29

So your answer would be 29

7 0

3 years ago

Can anybody help me with this?

Alex787 [66]

Answer:

Step-by-step explanation:

The rate of change for the table is found using the slope formula. The rate of change for the linear function is the coefficient of x.

<h3>table</h3>

The slope formula tells us the rate of change is ...

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

m = (-9 -(-10))/(-1 -(-4)) = 1/3

<h3>equation</h3>

The coefficient of x in the equations of the offered answer choices are 1/4 and 6.

<h3>comparison</h3>

The relations between the various slopes are ...

1/4 < 1/3 < 6

That is, the equation with a slope of 1/4 has a rate of change less than that of the function represented by the table:

y = 1/4x +4 because ... table of values is 1/3

6 0

2 years ago

'Increased' is a cue word for

AnnyKZ [126]

Answer:

add

Step-by-step explanation:

increased is another word for add

3 0

3 years ago

Read 2 more answers

Find the value of the variable y, where the sum of the fraction 2/y-3 and 6/y+3 is equal to the quotient.

NISA [10]

Answer:

Here we need to solve:

$\frac{2}{y - 3} + \frac{6}{y + 3 } = \frac{\frac{2}{y-3}}{\frac{6}{y + 3} }$

The sum of the fractions is equal to the quotient between the fractions.

Notice that the two values:

y = 3

y = -3

make the denominator equal to zero, so those values are restricted.

We can simplify the right side to get:

$\frac{2}{y - 3} + \frac{6}{y + 3 } = \frac{\frac{2}{y-3}}{\frac{6}{y + 3} } = \frac{2*(y + 3)}{6*(y - 3)} = 3*\frac{y + 3}{y - 3}$

Now we can multiply both sides by (y - 3)

$(y - 3)*(\frac{2}{y - 3} + \frac{6}{y + 3 }) = 3*(y + 3)\\2 + 6*\frac{y -3}{y + 3} = 3*(y + 3)$

Now we can multiply both sides by (y + 3)

$(2 + 6*\frac{y -3}{y + 3})*(y + 3) = 3*(y + 3)*(y + 3)$

$2*(y + 3) + 6*(y - 3) = 3*(y + 3)*(y + 3)\\\\2*y + 6 + 6*y - 18 = 3*(y^2 + 2*y*3 + 9)\\\\8*y - 12 = 3*y^2 + 6*y + 33\\\\0 = 3*y^2 + 6*y + 33 - 8*y + 12\\\\0 = 3*y^2 - 2*y + 45$

First, let's see the determinant of that quadratic equation:

$D = (-2)^2 - 4*3*45 = -536$

We can see that it is negative, thus, there are no real solutions of the equation.

Thus, there is no value of y such that the origina equation is true,

6 0

3 years ago

Write each equation in standard form using integers.

sergiy2304 [10]

Answer:

-9.5

Step-by-step explanation:

1 divided by 2 is .5 - 10 = -9.5

8 0

3 years ago