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sergeinik [125]
3 years ago
11

ILL GIVE MEDAL AND BRAINLIST AWNSER TO whoEVER IN THE FIRST!!!!Roland's heart beats 495 times in 6 minutes. At that rate, how ma

ny times would it beat in 20 minutes? 
A.


9900


B.
2970


C.
1650


D.
615
Mathematics
1 answer:
Sonbull [250]3 years ago
7 0

<em>Answer,</em>

C. 1650

<em>Explanation,</em>

<em>495/6 = 82.5</em>

<em>82.5 x 20 = </em><em>1650</em>


<u><em>Hope this helps :-)</em></u>

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Which value from the set {3, 8, 9, 14} makes the equation true?
garik1379 [7]

the answer would be 8.

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3 years ago
What is x2 – 6 = 16x + 30 rewritten in standard form, then factored?
AlexFokin [52]

Answer:

The standard form of quadratic equation is x^2-16x-36=0

The factored form of x^2-16x-36=0 is (x+2)(x-18)=0

Step-by-step explanation:

Given equation x^2-6=16x+30

We have to write  in standard form and then factorize the given equation.

The standard form for a general quadratic equation is given as ax^2+bx+c=0

Consider x^2-6=16x+30

Taking all terms to left side, we have,

x^2-6-16x-30=0

Adding like terms, we have,

x^2-16x-36=0

Now we will factorize it.

We will solve the quadratic equation x^2-16x-36=0 using middle term splitting method,

-16x can be written as -18x+2x

x^2-16x-36=0  becomes

\Rightarrow x^2-18x+2x-36=0

Taking x common from first two terms  and 2 common from last two terms we have,

\Rightarrow x(x-18)+2(x-18)=0

\Rightarrow (x+2)(x-18)=0

Thus, the factored form of x^2-16x-36=0 is (x+2)(x-18)=0

4 0
2 years ago
Read 2 more answers
What is the area of the original rectangle?
saw5 [17]

It is 8

As a result of multiply 1.6 times 6, we would also need to apply it to the side as well, and therefore multiply it.

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3 years ago
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A right rectangular prism is 6.5 cm by 14 cm by 5 cm. What is the surface area of the prism?
irina1246 [14]

Answer:

387

Step-by-step explanation:

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2 years ago
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uysha [10]

Answer:

they both has 7 slides and the presentation had a duration of 28 seconds

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then we just solve for x

2x+16=3x+10

subtract 10 from each side

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so both of their presentations are 7 slides long

then to find the length of their presentations we just plug in 6 to one of the equations

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