All categories

3 years ago

I need these answered by the end of TODAY!

Mathematics

2 answers:

PSYCHO15rus [73]3 years ago

6 0

Andre has more.

Hope this helps :))

Lina20 [59]3 years ago

3 0

Answer: Andre has more.

Step-by-step explanation: Thats because Andre has $120 and Elena has only $90 and $120 is obviously greater than $90 so thats ur answer your welcome if this helped! :>

You might be interested in

Modeling Radioactive Decay In Exercise, complete the table for each radioactive isotope.

Travka [436]

Answer :

The amount after 1000 years will be, 5.19 grams.

The amount after 10000 years will be, 0.105 grams.

Step-by-step explanation :

Half-life = 1599 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{t_{1/2}}$

$k=\frac{0.693}{1599\text{ years}}$

$k=4.33\times 10^{-4}\text{ years}^{-1}$

Now we have to calculate the amount after 1000 years.

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $4.33\times 10^{-4}\text{ years}^{-1}$

t = time passed by the sample = 1000 years

a = initial amount of the reactant = 8 g

a - x = amount left after decay process = ?

Now put all the given values in above equation, we get

$1000=\frac{2.303}{4.33\times 10^{-4}}\log\frac{8}{a-x}$

$a-x=5.19g$

Thus, the amount after 1000 years will be, 5.19 grams.

Now we have to calculate the amount after 10000 years.

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $4.33\times 10^{-4}\text{ years}^{-1}$

t = time passed by the sample = 10000 years

a = initial amount of the reactant = 8 g

a - x = amount left after decay process = ?

Now put all the given values in above equation, we get

$10000=\frac{2.303}{4.33\times 10^{-4}}\log\frac{8}{a-x}$

$a-x=0.105g$

Thus, the amount after 10000 years will be, 0.105 grams.

4 0

3 years ago

1. Carly bought some tickets and some snacks and paid $34 from the Redhawk Rangers selling raffle tickets for $2 each

GaryK [48]

Answer:

$2(T) + $1.5(S) = $34

Step-by-step explanation:

Let:

tickets be represented by T

Snacks be represented by S

As total amount she paid is $34

The expression would be:

$2(T) + $1.5(S) = $34

i hope it will help you!

4 0

3 years ago

Read 2 more answers

(100-2x)\2 =,<,or> 4x(x + 1

saveliy_v [14]

X= -5/8-5/8√33 or x= -5/8+5/8 √<span>33</span>

8 0

4 years ago

There are 20 pieces of fruit in a bowl and 3 of them are oranges. What percentage of the pieces of fruit in the bowl are oranges

galben [10]

15 percent of the fruit in the fruit bowl are oranges

3 0

3 years ago

Find the points where the line y = x - 1 intersects the circle x2 + y2 = 13

nata0808 [166]

Answer:

(-2,-3) and (3,2)

Step-by-step explanation:

sub in x-1 into y

x^2 + (x-1)^2 = 13

x^2 + (x-1)(x-1)=13

x^2 + x^2 -2x +1 = 13

2x^2 -2x-12=0

solve for x by factoring (quadratic formula, product sum etc..)

x= -2 and 3

plug in those values into y=x-1 and solve for y

3 0

3 years ago

Read 2 more answers