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Travka [436]
3 years ago
8

Earth is approximately 4.54 * 10^9 years old. Humans are thought to have evolved around 2.5 * 10^5 years ago.

Mathematics
1 answer:
kondaur [170]3 years ago
6 0

Answer:

5.507*10^-7%

Step-by-step explanation:

(2.5 * 10^5)/(4.54 * 10^9)*1/100 %= 5.507*10^-7%

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The owner of a toy store received a shipment of 1,552 party favors. The party favors came in 28 boxes. The same number of party
Svetradugi [14.3K]

let 


x = the number of party favors in each of the 27 boxes

y = the number of party favors in the last box


the total number of party favors is 1,552


27x + y = 1,552


since 1552 = 57*27 + 13


if we assume that y<x we conclude that there are 57 party favors in each of the 27 boxes and 13 party favors in the last box.



Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

8 0
3 years ago
Using the quadratic formula to solve x2 = 5 – x, what are the values of x? StartFraction negative 1 plus-or-minus StartRoot 21 E
Snezhnost [94]

Answer: StartFraction negative 1 plus-or-minus StartRoot 21 EndRoot Over 2

Step-by-step explanation:

The given quadratic equation is expressed as

x² = 5 - x

Rearranging the equation to take the standard form of ax² + bx + c, it becomes

x² + x - 5 = 0

The general formula for solving quadratic equations is expressed as

x = [- b ± √(b² - 4ac)]/2a

From the equation given,

a = 1

b = 1

c = - 5

Therefore,

x = [- 1 ± √(1² - 4 × 1 × - 5)]/2 × 1

x = [- 1 ± √(1 - - 20)]/2

x = [- 1 ± √21]/2

x = (- 1 + √21)/2 or x = (- 1 - √21)/2

3 0
3 years ago
Read 2 more answers
pls pls help me with this triangle, i’ve been doing math for hours now and i just need help with this pls pls thank you
Gwar [14]

Answer:

<em>Angle B=90 degrees</em>

<em> </em>

<em>BA^C= 40 degrees</em>

Step-by-step explanation:

<em>Angle B=</em><em>90 degrees (</em><em>right angle =90 degrees</em><em>)</em>

<em />

<em>90+50+BA^C=180</em>

<em>140+BA^C      =180</em>

<em>            BA^C=180-140</em>

<em>           </em><em>BA^C= 40 degrees</em>

<em>     </em>

3 0
3 years ago
Classify the number..3/8 a whole b natural c rational d integer
Elan Coil [88]

Answer:

It is a rational number

Step-by-step explanation:

3/8 = 0.375

The set of rational numbers is of measure zero on the real line, so it is "small" compared to the irrationals and the continuum.

Any rational number is trivially also an algebraic number.

7 0
3 years ago
The Breyer twins split the cost of their purchase. They bought an aquarium for $28.00. They spent $14.00 on fish, and they spent
ivolga24 [154]

Answer:

$24.75

Step-by-step explanation:

Let's first add up all the costs:

28+14+7.5 = 49.5

Since they split it, let's divide that by 2:

\frac{49.5}{2} = 24.75

Thus, they both spent $24.75.

7 0
3 years ago
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