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

You might be interested in

Help :( I’m not sure what the answer is

r-ruslan [8.4K]

Answer:

if it says greatest change then its 6:30 to 7:00

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

1/2 divided by 3. Please answer quickly. My homework is due in a few mins xd

umka2103 [35]

Answer:

0.1666666666

I'd say 1.16

3 0

3 years ago

Find each angle. Separate your awnser with a comma. For an example 18, 72

Alexeev081 [22]

(5x+7) + (8x-21) = 90
13x-14 = 90
13x= 104
X=8
The angle measurements are 47, and 43

6 0

2 years ago

Sam needs at least 78 credits to get his college degree. At the end of his third year, Sam has a total of 52 credits. Which ineq

Sergio039 [100]

Answer:

C + 52 ≥ 78

Step-by-step explanation:

Since Sam needs at least 78 credits to a college degree, the inequality is represented by a more than or equal to symbol (≥).

7 0

4 years ago

The volume of this rectangular solid WITHOUT a top is

nika2105 [10]

Answer:

240 cubic inches

Step-by-step explanation:

The volume of a rectangular solid is given by LxBxH.

This question has a $L=10$ , $B= 6$ and $H=4$ .

So the volume of a rectangular solid is $L\times B \times H =10\times 6 \times 4$

Volume $= 240$ cubic inches

7 0

3 years ago