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r-ruslan [8.4K]

2 years ago

6

Calculating the Sales Tax at Store B Store A Store B How much sales tax will be charged at Store B? Computer Repair $1,200 $1,35

0 Sales Tax 6% 7% Gratuity 15% 15% Shipping Free 2% of total price
I'll mark brainleiest whoever answers.

1 answer:

ivanzaharov [21]2 years ago

5 0

Answer:it’s 94.50

Step-by-step explanation: 7% of 1350 is 94.50 on edge

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Half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Anna35 [415]

Answer:

$0.625kg$

Step-by-step explanation:

we are given half-life of PO-210 and the initial mass

we want to figure out the remaining mass <u>after</u><u> </u><u>4</u><u>2</u><u>0</u><u> </u><u>days</u><u> </u>

in order to solve so we can consider the half-life formula given by

$\displaystyle f(t) = a {0.5}^{t/T}$

where:

f(t) is the remaining quantity of a substance after time t has elapsed.
a is the initial quantity of this substance.
T is the half-life

since it halves every 140 days our T is 140 and t is 420. as the initial mass of the sample is 5 our a is 5

thus substitute:

$\displaystyle f(420)=5\cdot{0.5}^{420/140}$

reduce fraction:

$\displaystyle f(420)=5\cdot{0.5}^{3}$

By using calculator we acquire:

$\displaystyle f(420)=0.625$

hence, the remaining sample after 420 days is 0.625 kg

4 0

3 years ago

Question 19 of 25 -

zubka84 [21]

X+14 because (look at the picture)

5 0

3 years ago

PLEASE HELP!!!!! THANK YOU!!!!!

scZoUnD [109]

Answer:

The slope is 2

Step-by-step explanation:

Formula: y2-y1/x2-x1= 11-5/7-4 = 6/3=2

7 0

3 years ago

Crawling Crayfish!

boyakko [2]

Answer: Crayfish, 25 s

Step-by-step explanation:

Given

The length of race is 60 cm

Flicker gets a 10 cm head-start

Cray fish covers 6 cm in 5 s i.e. its speed is

$\Rightarrow \dfrac{6}{5}=1.2\ cm/s$

Flicker covers 4 cm in 5 s, its speed is

$\Rightarrow \dfrac{4}{5}=0.8\ cm/s$

Time taken by Cray fish to cover the race is

$\Rightarrow t_1=\dfrac{60}{1.2}\\\\\Rightarrow t_1=50\ s$

Time taken by flicker to cover race with 10 cm head start

$\Rightarrow t_2=\dfrac{60-10}{0.8}\\\\\Rightarrow t_2=62.5\ s$

Time taken by crayfish is less. Hence, crayfish wins the race

When they both covers the same distance, they tied momentarily i.e.

$\Rightarrow 1.2t=10+0.8t\\\Rightarrow 0.4t=10\\\\\Rightarrow t=\dfrac{10}{0.4}\\\\\Rightarrow t=25\ s$

After 25 s, they tied the race.

5 0

2 years ago

What is the solution to -4|-2x + 6| = -24?

Natalka [10]

Last one i think

x=0 or x=6

4 0

2 years ago

Read 2 more answers