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3 years ago

How can I solve this Inequality ?

Mathematics

1 answer:

musickatia [10]3 years ago

4 0

Add 12 to both sides.

q-12 > 3
q > 15

ANSWER: q > 15

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What is the decimal equivalent of 37%

trasher [3.6K]

$37 \div 100 = 0.37 \\$
0. 37 is the answer

3 0

3 years ago

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Dwayne drove 18 miles to the airport to pick up his father and then returned home. On the return trip he was able to drive an av

Nesterboy [21]

Answer:

30 mph

Step-by-step explanation:

Let d = distance (in miles)

Let t = time (in hours)

Let v = average speed driving <u>to</u> the airport (in mph)

⇒ v + 15 = average speed driving <u>from</u> the airport (in mph)

Using: distance = speed x time

$\implies t=\dfrac{d}{v}$

Create two equations for the journey to and from the airport, given that the distance one way is 18 miles:

$\implies t=\dfrac{18}{v} \ \ \textsf{and} \ \ t=\dfrac{18}{v+15}$

We are told that the total driving time is 1 hour, so the sum of these expressions equals 1 hour:

$\implies \dfrac{18}{v} +\dfrac{18}{v+15}=1$

Now all we have to do is solve the equation for v:

$\implies \dfrac{18(v+15)}{v(v+15)} +\dfrac{18v}{v(v+15)}=1$

$\implies \dfrac{18(v+15)+18v}{v(v+15)}=1$

$\implies 18(v+15)+18v=v(v+15)$

$\implies 18v+270+18v=v^2+15v$

$\implies v^2-21v-270=0$

$\implies (v-30)(v+9)=0$

$\implies v=30, v=-9$

As v is positive, v = 30 only

So the average speed driving to the airport was 30 mph

(and the average speed driving from the airport was 45 mph)

8 0

2 years ago

Read 2 more answers

Please help!

Sholpan [36]

The first one is correct because the angle on the opposite side is the same, and the second one is correct too because it's the same points. So you can pick either or.

6 0

3 years ago

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Christa went shopping for back-to-school clothes. Before the tax was added on, her total was $176. If the sales tax is 6%, what

deff fn [24]

Answer:

$10.56

Step-by-step explanation:

Cross multiply and divide!

if the total cost is $176, multiply by the % of sales tax and divide by 100 (100%)

176 multiplied by 6% = 1,056

1,056 divided by 100% = $10.56

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3 years ago

Suppose that a Navy submarine is submerged 500 feet below sea level.

grin007 [14]

Answer:

B) A and D

Step-by-step explanation:

Below sea level already implies negative.

And on a number line, it should be -500

3 0

3 years ago