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3 years ago

A number is Multiplied by 3 and 5 is added. If one half of the new nummber is 16, what was the first number

Mathematics

1 answer:

borishaifa [10]3 years ago

5 0

Step-by-step explanation:

The original number is x.

The new number is 3x + 5.

We know that 0.5(3x + 5) = 16, so 3x + 5 = 32.

3x + 5 = 32, 3x = 27, x = 9.

Hence the original number is 9.

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I WILL NAME YOU THE BRAINLIEST!

OlgaM077 [116]

Answer: c=5.4

The two roots are 3/5 and 9/5

Step-by-step explanation:

assume 5x2−12x c=0 is supposed to be 5x^2 - 12x + c = 0

p = (12 + sqrt(144-20c))/10

q = (12 - sqrt(144-20c))/10

p-3q=0,

1.2 + 0.1sqrt(144-20c) +

-3.6 + 0.3sqrt(144-20c) = 0

-2.4 + 0.4sqrt(144-20c) +2.4 = 2.4

sqrt(144-20c) = 2.4/0.4 = 6

144-20c=36

144-36=20c

c = 108/20 = 5.4

5x^2-12x+5.4=0

x = 3/5 or x = 9/5

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3 years ago

Read 2 more answers

If a spring is oscillating (moving) according to the velocity equation v(t) = 2sin(t) (in ft/s), then what is its displacement o

Feliz [49]

ANSWER

4 ft

EXPLANATION

The velocity equation of the oscillating spring is given by the function.

$v(t)=2 \sin(t) \: \: {ms}^{ - 1}$

To find the displacement function, we need to to Integrate the velocity function.

$s(t) = \int \: 2 \sin(t) dt$

$s(t) = - 2 \cos(t) + k$

At time t=0, there was no displacement.

This implies that,

$s(0) = 0$

$0= - 2 \cos(0) + k$

$0= - 2 + k$

$k = 2$

The displacement function then becomes,

$s(t) = - 2 \cos(t) + 2$

To find the displacement over the first π seconds, we put

$t = \pi$

into the equation for the displacement to get,

$s(\pi) = - 2 \cos(\pi) + 2$

$s(\pi) = - 2 ( - 1) + 2$

$s(\pi) = 2 + 2 =4 ft$

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3 years ago

Which of the following are true statements about any regular polygon? Check all that apply. A. all of it's angles measure 90 deg

dmitriy555 [2]

Answer:

B,E,F

Step-by-step explanation:

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3 years ago

What is the equation of a line that passes through the point (6, 1) and is perpendicular to the line whose equation is y=−2x−6y=

Mandarinka [93]

Lets get the negative reciprocal of the slope so we get
$m = \frac{1}{2}$
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fgiga [73]

Is there a picture to go with this?

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3 years ago

A number is Multiplied by 3 and 5 is added. If one half of the new nummber is 16, what was the first number​

A number is Multiplied by 3 and 5 is added. If one half of the new nummber is 16, what was the first number