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3 years ago

Solve The inequality

Mathematics

1 answer:

stealth61 [152]3 years ago

3 0

Answer:

D is the correct answer.

Please thank me

Step-by-step explanation:

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3x²=12 extracting square roots

ivann1987 [24]

Answer:

x = ± 2

Step-by-step explanation:

Given

3x² = 12 ( divide both sides by 3 )

x² = 4 ( take the square root of both sides )

x = ± $\sqrt{4}$ = ± 2

3 0

3 years ago

Please can someone help me with this

Eduardwww [97]

Answer:

$\boxed{V = 434.9 \ cm^3 }$

Step-by-step explanation:

Volume of Sphere = $\frac{4}{3} \pi r^3$

Where r = 4.7 cm

V = $\frac{4}{3} (3.14)(4.7)^3$

V = $\frac{4}{3} (3.14)(103.8)$

V = $\frac{1304.7}{3}$

V = 434.9 cm³ (Up to 1 dp)

4 0

4 years ago

Read 2 more answers

Problem number 7 trigonometry

Natasha_Volkova [10]

7) - 1

tan <BAD = BD / AD

BC = √(64 + 36)
BC = √100
BC = 10

now you can solve BD
BD/6 = 6/10
BD = 6*6 / 10
BD = 36/10
BD = 3.6

AD = √36 - 12.96
AD = √23.04
AD = 4.8

tan <BAD = BD / AD
tan <BAD = 3.6 / 4.8
tan <BAD = 0.75

7) - 2

cos <DAC + cos <DAB

as you know cos = Adj / Hypo

cos <DAC = AD/AC
cos <DAC = 4.8 / 8
cos <DAC = 0.6

cos <DAB = AD / AB
cos <DAB = 4.8/6
cos <DAB = 0.8

so
cos <DAC + cos <DAB = 0.6 + 0.8
cos <DAC + cos <DAB = 1.4

hope it helps

8 0

3 years ago

How many way can 4 people line up out of 20?

Pani-rosa [81]

Answer:

Step-by-step explanation:

20 x 4 = 80

3 0

3 years ago

Read 2 more answers

A boat traveled 37 miles in 2 hours. At this rate, how many miles will the boat travel in

Inessa [10]

Answer:

i. The boat will travel 18.5 miles in one hour

ii. The boat will travel 9.25 miles in half an hour

iii. The boat will travel 27.75 miles in one and a half hours

Explanation:

We are given that the boat travel 37 miles in 2 hours

To get the miles traveled, we can simply use cross multiplication

i. Miles traveled by the boat in one hour:

37 miles .....................> 2 hours

x miles ........................> 1 hour

$x = \frac{37*1}{2}=18.5$ miles

ii. Miles traveled in half an hour:

37 miles .....................> 2 hours

x miles ........................> 0.5 hour

$x = \frac{37*0.5}{2}=9.25$ miles

iii. Miles traveled in an hour and a half:

37 miles .....................> 2 hours

x miles ........................> 1.5 hour

$x = \frac{37*1.5}{2}=27.75$ miles

Hope this helps :)

8 0

4 years ago