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3 years ago

13

5x = 3 – 2x^2 solve for a answer

1 answer:

Oliga [24]3 years ago

8 0

Answer:

x=1/2; x=-3

Step-by-step explanation:

2x^2+5x-3=0

(2x-1)(x+3)=0

2x-1=0; x=1/2

x=-3

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The above picture shows a series of similar shapes. Describe and quantify what transformation(s) occurred at each step. The orig

velikii [3]

Answer:

Triangle ABC is shown with four images that are each the result of a transformation of triangle ABC. Triangle MNO is reflected over the x-axis and then translated up 4 and right 3. Translate the pre-image down 4 and right 3 and then reflect the figure over the x-axis

Brainlist Pls!

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3 years ago

Element X is a radioactive isotope such that its mass decreases by 26% every day. If an experiment starts out with 810 grams of

ioda

Answer:

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

Step-by-step explanation:

Exponential equation of decay:

The exponential equation for the amount of a substance is given by:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Hourly rate of change:

Decreases 26% by day. A day has 24 hours. This means that $A(24) = (1-0.26)A(0) = 0.74A(0)$ ; We use this to find r.

$A(t) = A(0)(1-r)^t$

$0.74A(0) = A(0)(1-r)^{24}$

$(1-r)^{24} = 0.74$

$\sqrt[24]{(1-r)^{24}} = \sqrt[24]{0.74}$

$1 - r = (0.74)^{\frac{1}{24}}$

$1 - r = 0.9875$

$r = 1 - 0.9875 = 0.0125$

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

Starts out with 810 grams of Element X

This means that $A(0) = 810$

Element X is a radioactive isotope such that its mass decreases by 26% every day.

This means that we use, for this equation, r = 0.26.

The equation is:

$A(t) = A(0)(1-r)^t$

$A(t) = 810(1 - 0.26)^t$

$A(t) = 810(0.74)^t$

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

5 0

2 years ago

Which statement best describes the faces that make up the total surface area of this composite solid? A triangular prism on top

Anestetic [448]

Answer:

The answer is B) 9 faces, 7 rectangles, and 2 triangles

Step-by-step explanation:

I took the test and got it correct

3 0

3 years ago

Read 2 more answers

A steel factory manufactures and sells steel beams

tankabanditka [31]

Answer:

That is very nice. I like steel factory's that manufacture and sell steel beams, they are my favorite!! :]

The question is bland...

And honestly what even is the question?

Step-by-step explanation:

I'll help but explain the question further

4 0

2 years ago

Find the unknown angle measure.

spin [16.1K]

Answer:

x=80

Step-by-step explanation:

The sum of interior angles in a quadrilateral is 360°

the square represents a right angle= 90 degrees

124+66+90=280

360-280=80

x=80

6 0

3 years ago