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3 years ago

What is 80, 023 written in scientific notation? send help bbys.

Mathematics

1 answer:

Naddika [18.5K]3 years ago

3 0

Answer:

8.0023 x 10^4

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A rectangle is twice as long as it is wide. Its area is 72 square units. Find the length of each side. System of equations

liraira [26]

Answer:

L = 12

W = 6

Step-by-step explanation:

W = 2L

A = L * W

A = 72

72 = L * 2L

72 = 3L

24 = L (you have to divide by 2)

L = 12

W = 6

6 0

2 years ago

If the length of each side of an equilateral triangle were increased by 50 percent, what would be the percent increase in the ar

Shkiper50 [21]

Answer:

The area increase by 225%

Step-by-step explanation:

attachment of a triangle

The area of a triangle equilateral is calculated with the next formula:

A= $\frac{a*h}{2}$

$h^{2} +(\frac{a}{2})^{2}$ = $a^{2}$

$h^{2} = a^{2} - \frac{a^{2} }{4}$ = $\frac{a^{2} }{4}$ *3

h= $\sqrt{\frac{a^{2}*3 }{4} }$

h= $\frac{\sqrt{3}*a }{2}$

replacing in the A equation:

A= $\frac{a*\sqrt{3}*a }{2*2}$ 

A= $\frac{\sqrt{3}*a^{2} }{4}$ 

Now each side increse by 50% ⇒ a=1.5a

A= $\frac{\sqrt{3}*(1.5a)^{2} }{4}$ 

A= $\frac{\sqrt{3}*a^{2}* 2.25 }{4}$ 

A=2.25 * $\frac{\sqrt{3}*a^{2} }{4}$ 

It means that the area incrase by 225%

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3 years ago

Write the vertex and indicate if the graph opens up or down.

Reil [10]

The answer is A,) (-2,-5) because I just did it in my CASIO calculator

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2 years ago

Read 2 more answers

Match each pair of polynomials to their sum.

Alex17521 [72]

Answers:

(12x^2 + 3x + 6) + (-7x^2 – 4x – 2) = 5x^2 - x + 4

(2x2 – x) + (-x – 2x2 – 2) = -2x - 2

(x3 + x2 + 2) + (x2 – 2 – x3) = 2x^2

(x2 + x) + (x2 + 8x – 2) = 2x^2 + 9x - 2

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3 years ago

18 less than the product of 42 and x write as an algebraic expression

Afina-wow [57]

Less than = subtraction = -
Product = multiplication

(42 + x) - 18

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3 years ago

What is 80, 023 written in scientific notation? send help bbys. ​

What is 80, 023 written in scientific notation? send help bbys.