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3 years ago

Which step has the mistake in solving for roots?

Mathematics

1 answer:

REY [17]3 years ago

7 0

Answer:

Step-by-step explanation:

2x² - 7x - 3 = 1

Step 1: 2x² - 7x - 4 = 0

Step 2: incorrect.

Use Quadratic Formula to solve for roots.

x = [7 ± √(7² – 4·2(-4))] / [2·2]

= [7 ± √81] / 4

= [7 ± 9] /4

= -0.5, 4

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Please help im so lost Ty btw

klasskru [66]

Answer:

1) gradient (00) (-2 4) = y2-y1 / 2-1 = 4/-2 = -2 m = -2/1 means = m = -2 (negative slope) 2) gradient y2-y1 / x2-x1 = 3-0 / 2-0 = 3/2 = (1 1/2)/1 m = 1 1/2 (positive slope) we use the formula y-values divided by the change in the x-values. The equation of the gradient each goes like this 1) y = -2x as y is at origin nothing else to add The equation of the gradient each goes like this 2) y = 1 1/2x The equation of the point formula 1) we take the y -y1 = m (x +x 1) = y-0 = -2x (x +0) (as m = -2) y = -2(x +0) and The equation of the point formula 2) y - 0 = m ( x +x1) y - 0 = 1 1/2( x +0) = y = 1 1/2( x +0)

5 0

2 years ago

Rewrite each expression as a single power 6^4 x 6^4

victus00 [196]

6 x 6 x 6 x 6 x 6 x 6 x 6 x 6

7 0

3 years ago

Read 2 more answers

How much is 3 quaters + three dimes + 5 cents equals?<br><br><br>I'm trying to make a dollar

beks73 [17]

It equals 1 dollar and 10 cents

7 0

2 years ago

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What is the area of the figure above ?

RideAnS [48]

Answer:

256m^2

Step-by-step explanation:

you can cut up the figure.

A1=bh

A1= 24x8

A1=192m^2

A2=bh

A2= bh

A2=8x8

A2=64m^2

A1+A2= Atotal

A=192+64

A=256m^2

4 0

3 years ago

Luis has 5 cans of soda. He will buy more cans of soda from the store. The store has 12 cases in stock and each case contains 24

-BARSIC- [3]

We are given function f(c) = 24c+5 that models the number of cans Luis will have after his purchase of more c number of cases Luis purchase.

We need to find the domain of the function in respect to the given function.

Here we used variable c. And c represents the number of cases Luis can purchase.

Minimum number of cases Luis can purchase = 0.

There are total 12 cases in stock.

Therefore, maximum number of cases Luis can purchase = 12.

<h3>So, the domain of the function is {0,1,2,3,4,5,6,7,8,9,10,11,12}.</h3>

8 0

3 years ago