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2 years ago

Will give brainlyest

Mathematics

2 answers:

nalin [4]2 years ago

8 0

Answer:

10 hours

Step-by-step explanation:

We already have the equation, which is y = 30x + 20. Simply substitute 320 for y, and solve for x.

320 = 30x + 20

<em>First, subtract 20 from both sides.</em>

320 - 20 = 30x

300 = 30x

<em>Now divide both sides by 30.</em>

300/30 = x

10 = x

It will take about 10 hours for Robin to travel 320 miles.

Marizza181 [45]2 years ago

3 0

Answer:

10 hours

Step-by-step explanation:

320 = 30x + 20

300 = 30x

x = 10

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Michaela caught 3 fish, which weigh a total of 19 1/2 pounds. One fish weighs 7 5/8 pounds and another weighs 5 3/4 pounds. How

Serjik [45]

Answer:

ANSWER: 6 1/8

Step-by-step explanation:

Steps:

7 5/8 + 5 3/4

7 5/8 + 5 6/8

12 11/8

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2 years ago

Q= 4+0.8p what value of p would make the equation true if q was 70

just olya [345]

Answer:

82.5 = p

Step-by-step explanation:

Q= 4+0.8p

Let q = 70

70= 4+0.8p

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70-4= 4-4+0.8p

66 = .8p

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66/.8 = .8p/.8

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7 0

2 years ago

There are 30 marbles in a bag. 24 of them are blue. What percentage of the marbles are blue?

lorasvet [3.4K]

Answer:

80%

Step-by-step explanation:

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24 x 3 1/3= 80

3 0

2 years ago

Solve 3x^2 + 6x+15=0

Elden [556K]

Answer:

The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i )

Step-by-step explanation:

Given equation as :

3 x² + 6 x +15 = 0

The value of x fro the quadratic equation a x² + b x + c = 0 is obtained as

x = $\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

So , from given eq , the value of x is now obtain as

x = $\frac{-b\pm \sqrt{b^{2}-4\times a\times c}}{2\times a}$

Or, x = $\frac{-6\pm \sqrt{6^{2}-4\times 3\times 15}}{2\times 3}$

Or, x = $\frac{\sqrt{-144} }{6}$

∴ x = ( - 1 + 2 i ) , ( - 1 - 2 i )

Hence The solution of given equation is ( - 1 + 2 i ) , ( - 1 - 2 i ) Answer

6 0

3 years ago

What is the simplified answer to 5+3w+3-w

DaniilM [7]

Answer:

Step-by-step explanation:

$5+3w+3-w\qquad\text{combine like terms}\\\\=(3w-w)+(5+3)\\\\=2w+8$

6 0

3 years ago