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4 years ago

What does (5 x -4) - 8=

Mathematics

1 answer:

Leto [7]4 years ago

4 0

Answer:

-28

Step-by-step explanation:

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What is the reciprocal of -7/10 decreased by 5?

Morgarella [4.7K]

Answer:

Step-by-step explanation:

2/5 is the answer so the reciprocal would be 5/2

8 0

3 years ago

Solve the equation -3 = 8x - 4yfor y

Anestetic [448]

You would add 4y to both sides of the equation which would leave you with

4y - 3 = 8x

then you would divide the entire equation by 4 leaving you with

y - 3/4 = 2x

then you would add 3/4 to both sides of the equation leaving you with

y = 2x + 3/4

8 0

4 years ago

Write 25.0347 as a decimal correct to 3 decimal place help asap please

lisov135 [29]

Answer:

25.035

Step-by-step explanation:

25.0347 we're looking at these two numbers, 5-9 round up, 1-4 round down.

Looking at the 7 we round the left number up by +1 and 4 becomes 5 and thats 3dp.

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3 years ago

What is the answer to this question

ss7ja [257]

Answer: about 34.6

Step-by-step explanation: 11 is the radius, but you need the diameter which is 22. multiply 22 by pi and divide that number by 2 since it is half a circle.

8 0

4 years ago

which statements are true about the graph of the function f(x) = 6x – 4 x2? check all that apply. the vertex form of the functio

Brut [27]

Answer:

The vertex of the function is the point $(-3,-13)$

The graph increase over the interval--------> (-3,∞)

Step-by-step explanation:

we have

$f(x)=6x-4+x^{2}$

1) Convert to vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)+4=x^{2}+6x$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)+4+9=x^{2}+6x+9$

$f(x)+13=x^{2}+6x+9$

Rewrite as perfect squares

$f(x)+13=(x+3)^{2}$

$f(x)=(x+3)^{2}-13$ -----> function in vertex form

2) Find the vertex

The vertex of the function is the point $(-3,-13)$

3) Find the axis of symmetry

we know that

In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex

The x-coordinate of the vertex in this problem is equal to $x=-3$

therefore

the equation of the axis of symmetry is $x=-3$

4) Find the increase-decrease intervals

The graph increase over the interval--------> (-3,∞)

The graph decrease over the interval--------> (-∞,-3)

see the attached figure to better understand the problem

5) Find the x-intercepts of the function

we know that

the x-intercepts are the values of x when the value of the function is equal to zero

In this problem the x-intercepts are

$(-6.61,0)$ and $(0.61,0)$

The function cross the x-axis twice

see the attached figure

5 0

4 years ago

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