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IrinaK [193]
3 years ago
11

Write the product using exponents. (-1/2)•(-1/2)•(-1/2) Using exponents, the product is

Mathematics
2 answers:
Alina [70]3 years ago
8 0

-.125 or 5/40. zzzzzzzzzzzzzzzzz

nadya68 [22]3 years ago
4 0

Answer: (-1/2)^3

-0.125

Step-by-step explanation:

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Which of the following expressions could give the total amount of a $45 restaurant bill with a 15% tip added on?
vazorg [7]

Answer:

$51.75

Step-by-step explanation:

Given

Total amount of bill, x= $45

Tip Percent=15%

⇒15% on $45 is to be paid extra as tip, other than the already paying $45

⇒Tip=\frac{15}{100}\times x=\frac{15}{100}  \times45=6.75

So <em>total amount to be paid</em>= Bill+ tip

= x + tip=x+\frac{15}{100} x=1.15x=1.15\times45

=$51.75

4 0
3 years ago
What is the volume of this square pyramid?<br><br><br> Enter your answer in the box. <br><br> ___ m3
ololo11 [35]
Volume is length times width times height
3 0
4 years ago
Read 2 more answers
Nikki Grows 20 Tomato plants. She measures their heights to the nearest centimetre, and writes them down
wariber [46]

Answer:

ok? what am i supposed to do

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A bacteria colony increases in size at a rate of 4.0581e1.6t bacteria per hour. If the initial population is 36 bacteria, find t
Harrizon [31]

Answer:

1560

Step-by-step explanation:

The rate of Increase of the population (P) of the bacteria is given as:

\frac{dP}{dt} =4.058e^{1.6t}

dP =4.058e^{1.6t}}dt\\Taking\: Integrals\\\int dP =4.058 \int e^{1.6t}dt\\P(t)=\frac{4.058}{1.6} (e^{1.6t} +K)\\P(t)=2.53625 (e^{1.6t} +K)

Where k is a constant of Integration.

At t=0, P(t)=36

36=2.53625 (e^{1.6*0} +K)\\36=2.53625 (e^{0} +K)\\36=2.53625 (1 +K)\\36=2.53625 +2.53625K\\K=13.19

Therefore:

P(t)=2.53625 (e^{1.6t} +13.19)\\At \: t=4\\P(4)=2.53625 (e^{1.6*4} +13.19)\\=1559.88\\P(4)=1560

3 0
3 years ago
Sofia cuts a piece of felt in the shape of a kite for an art project. The top two sides measure 20 cm each and the bottom two si
Phantasy [73]

x + y  = 24       where x and y are the 2 parts of diagonal Other diagonal wil be smaller that 24. 
x^2 + z^2 = 13^2
y^2 + z^2  = 20^2            where z  = 0.5 * length of smaller diagonal)

form last 2 equations

y^2 - x^2  = 20^2 - 13^2  =  231
 now y = 24-x so we have

(24 - x)^2    - x^2 = 231

576 - 48x = 231

48x = 345

x =  7.1875

z^2  =  13^2 - 7.1875^2 =  117.34
z =  1.83

so smaller diagonal = 21.66 cm


looks like its the third choice.



5 0
3 years ago
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