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3 years ago

What is 7/8 - 4/5 = what is 7/8 - 4/5

Mathematics

2 answers:

s344n2d4d5 [400]3 years ago

6 0

The answer is 3/40 7-4

monitta3 years ago

3 0

First find common denominators and do the same to the numerators.

4/5 = 32/40
7/8 = 35/40

35/40 - 32/40 = 3/40

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Convert 5.3575 miles into kilometers

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What is the quotient of the division below?

erastovalidia [21]

Answer:

C. 48

Step-by-step explanation:

336/7 is 48

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3n + 7 - 11n - 31 = 160

Otrada [13]

Answer:

n = -23

Step-by-step explanation:

3n + 7 - 11n - 31 = 160

Step 1: Combine like terms

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Step 2: Simplify

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2 years ago

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Plot the x-intercept(s), y-intercept, vertex, and axis of symmetry of this function:

Maslowich

Answer:

Part 1) The vertex is the point (1,-9)

Part 2) The equation of the axis of symmetry is x=1

Part 3) The y-intercept is the point (0,-8)

Part 4) The x-intercepts are (-2,0) and (4,0)

Part 5) The graph in the attached figure

Step-by-step explanation:

we have

$h(x)=(x-1)^2-9$

This is a vertical parabola open upward

The vertex represent a minimum

Part 1) Find the vertex

The quadratic equation is written in vertex form

$y=a(x-h)^2+k$

where

(h,k) is the vertex of the parabola

The vertex is the point (1,-9)

Part 2) Find the axis of symmetry

The equation of the axis of symmetry of a vertical parabola is equal the the x-coordinate of the vertex

The equation of the axis of symmetry is

$x=1$

Part 3) Find the y-intercept

we know that

The y-intercept is the value of the function when the value of x is equal to zero

For x=0

$h(x)=(0-1)^2-9$

$h(0)=-8$

therefore

The y-intercept is the point (0,-8)

Part 4) Find the x-intercepts

we know that

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

For h(x)=0

$(x-1)^2-9=0$

solve for x

$(x-1)^2=9$

square root both sides

$x-1=\pm3$

$x=1\pm3$

$x=1+3=4\\x=1-3=-2$

therefore

The x-intercepts are (-2,0) and (4,0)

Part 5) Plot the graph of the quadratic function

Plot the following points to graph the function

vertex (1,-9)

axis of symmetry x=1

y-intercept (0,-8)

x-intercepts (-2,0) and (4,0)

The graph in the attached figure

4 0

3 years ago

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We are having trouble with question 7

Verdich [7]

First off, you can multiply a 2-digit number by 2 and just add 0 to the product. For instance: 12 x 20

Number line: two jumps of number 12.

So : 12 x 2 = 24

Finally, 12 x 20 = 240

Hope this helped.

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3 years ago