3 years ago

4x2 + 8x – 9 = 0 complet the square

Mathematics

1 answer:

lisov135 [29]3 years ago

6 0

The answer is 1/8. That is the answer for this question.

You might be interested in

Transversal problems with equations level 1 (6x+10) (10x+10)

IRISSAK [1]

Answer:

Step-by-step explanation:

Since m||n the sum of given angles is equal to 180 (they are supplementary)

6x + 10 + 10x + 10 = 180 add like terms

16x + 20 = 180 subtract 20 from from both sides

16x = 160 divide both sides by 16

x = 10

4 0

2 years ago

To measure the height of a tree, a surveyor walked a short distance from the tree and found the angle of elevation was 43.9°, th

padilas [110]

Answer:

The height of the tree is H = 77.06 m

Step-by-step explanation:

From Δ ABC

AB = height of the tree

$\tan 43.9 = \frac{AB}{BC}$

$\tan 43.9 = \frac{h}{x}$

h = 0.9623 x ------- (1)

From Δ ABD

$\tan 37.6 = \frac{h}{20+ x}$

h = 0.77 (x + 20) ----- (2)

Equating Equation 1 & 2 we get

0.9623 x = 0.77 (x + 20)

0.9623 x = 0.77 x + 15.4

x (0.1923) = 15.4

x = 80.08 m

Thus the height of the tree is given by

H = 0.9623 x

H = 0.9623 × 80.08

H = 77.06 m

Therefore the height of the tree is H = 77.06 m

4 0

4 years ago

HELP ME PLEASE !!!!!!!!!!15 POINTS

USPshnik [31]

C is the correct answer 3.785*2.5=9.4625 then multiply by 1000 and you get 9,462.5

3 0

3 years ago

Read 2 more answers

Explain what happens when you round 4.999 to the nearest tenth

Allushta [10]

Tenth place is the first place after the decimal which is 4.999
^
The answer is 4.9

4 0

3 years ago

Read 2 more answers

Solve 8[7 - (6x - 6)] + 6x = 0.

dsp73

Its x = 52/21 = 2.47

6 0

3 years ago

Read 2 more answers