All categories

3 years ago

Evaluate 8x-y2-3 when x = -1/4 and y=3plz help

Mathematics

1 answer:

UkoKoshka [18]3 years ago

6 0

Answer:

-14

Step-by-step explanation:

8x-y²-3

8(-1/4) - (3)² - 3

-2 - (9) - 3

= -14

You might be interested in

Convert each measure into radians

mars1129 [50]

Answer: -240 = -4π / 3, 60 = π / 3, 270 = 3π / 2, 945 = 21π / 4, -30 = -π / 60, 195 = 13π / 12

Step-by-step explanation:

The formula for converting Degrees into Radians is Degrees * (π / 180) = Radians.

For -240, we have -240 * (π / 180) = -240π / 180 and simplifying gives us -4π / 3

60: 60 * (π / 180) = 60π / 180 = π/3

270: 270 * (π / 180) = 270π / 180 = 3π / 2

945: 945 * (π / 180) = 945π / 180 = 21π / 4

-30: -30 * (π / 180) = -30π / 180 = π / 60

195: 195 * (π / 180) = 195π / 180 = 13π / 12

5 0

2 years ago

(SHOW YOUR WORK PLZ AND EXPLAIN)

77julia77 [94]

H would be your answer (9x2)+(14x4)=74

8 0

4 years ago

Read 2 more answers

How do find the height of the parallelogram?

Yanka [14]

You need to multiply the base by the height.

5 0

3 years ago

Mr smiths loan balance has decreased by 71.4%. Calculate the change in his loan balance

nikklg [1K]

Can you write the full question

4 0

3 years ago

Answer if u love cats & dogs

eimsori [14]

Answer:

(7, 5.25) lies on the graph.

Step-by-step explanation:

We are given the following values

x = 4, 6, 8, 12 and corresponding y values are:

y = 3, 4.5, 6, 9

Let us consider two points (4, 6) and (6, 4.5) and try to find out the equation of line.

Equation of a line passing through two points $(x_1,y_1)$ and $(x_2,y_2)$ is given as:

$y=mx+c$

where m is the slope.

(x,y) are the coordinates from where the line passes.

c is the y intercept.

Here,

$x_{1} = 4\\x_{2} = 6\\y_{1} = 3\\y_{2} = 4.5$

Formula for slope is:

$m = \dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m = \dfrac{4.5-3}{6-4}\\\Rightarrow m = \dfrac{1.5}{2}\\\Rightarrow m = \dfrac{3}{4}$

Now, the equation of line becomes:

$y=\dfrac{3}{4}x+c$

Putting the point (4,3) in the above equation to find c:

$3=\dfrac{3}{4}\times 4+c\\\Rightarrow 3=3+c\\\Rightarrow c =0$

So, final equation of given function is:

$y=\dfrac{3}{4}x$

$4y=3x$

As per the given options, the point (7, 5.25) satisfies the equation.

So correct answer is $(7, 5.25)$ .

6 0

3 years ago