3 years ago

Evaluate each expression for x = 6 and for x = 3. Based on your results, do you know whether the two expressions are equivalent?

Mathematics

1 answer:

cluponka [151]3 years ago

6 0

You can't add the same number to 2 different numbers and get the same answer, so no.

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Solve the equation x2 + 64 = 100

anyanavicka [17]

Answer:

x = ± 6

Step-by-step explanation:

Given

x² + 64 = 100 ( subtract 64 from both sides )

x² = 36 ( take the square root of both sides )

x = ± $\sqrt{36}$ = ± 6

7 0

3 years ago

Between 11 P.M. and 8:54 A.M., the water level in a swimming pool decreased by 11/20. Assuming that the water level decreased a

lisabon 2012 [21]

1 each hour 20-11=9 there is 9 hours between 11pm and 8:54am so 1 per each hour hope that it helped ;)

6 0

2 years ago

9. Earth turns on its axis once every 24 h. How many hours does earth take to complete 2 1/4 turns

Dima020 [189]

Answer:

Step-by-step explanation:

24* 2.25= 54

(.25 is 1/4 in decimal form)

7 0

2 years ago

8 × 10 + 6 − 2 7 + 5 × 8 − 4

riadik2000 [5.3K]

Answer:

Step-by-step explanation:

(8)(10)+6−27+(5)(8)−4

=80+6−27+(5)(8)−4

=86−27+(5)(8)−4

=59+(5)(8)−4

=59+40−4

=99−4

=95

hope this helped :)

6 0

2 years ago

Read 2 more answers

A “stick” object of height 10 cm is standing in front of a point X–ray source at a distance of 50 cm from the source. The detect

blagie [28]

Answer:

40 cm.

Step-by-step explanation:

Given,

height of the object = 10 cm

Distance of the object from the X-ray= 50 cm

Distance of detector from the source = 2 m = 200 cm

Height of the image, h = ?

Now,

$\tan \theta = \frac{P}{B}$

$\tan \theta = \frac{10}{50}$

$\tan \theta = \frac{1}{5}$

Again applying

$\tan \theta = \frac{P}{B}$

$\frac{1}{5} = \frac{h}{200}$

h = 40 cm

Hence, height of the image is equal to 40 cm.

6 0

2 years ago