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3 years ago

PLZ HURRY JUST NEED HELP WITH THESE 2 QUESTIONS, WILL GIVE BRAINLIEST 20 POINTS

Mathematics

1 answer:

Alexus [3.1K]3 years ago

5 0

5. x = 9
6. x = 8

Just solve by simplifying both sides of the equation and then isolating the variable.

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Can someone help me with this question please?

Simora [160]

Answer:

Each sequence has a difference of eight numbers so we add 8 numbers in each sequence

7 0

3 years ago

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The local store where Tim shops charges a 7% sales tax for clothing. Complete the table by figuring the cost of the jeans after

Sindrei [870]

Answer:

$A=P+P\times S\%$

Step-by-step explanation:

For calculating the sales tax of a product, it is required to first multiply the original cost price of the product by the sales tax percentage.

Once the sales tax has been computed add it to the original cost price in order to determine the total cost of the product.

The formula of final amount is:

$A=P+P\times S\%$

Here,

A = final amount

P = original cost price

S = sales tax percentage

7 0

3 years ago

The half-life of cesium-137 is 30 years. Suppose we have a

VMariaS [17]

(a) If $y(t)$ is the mass (in mg) remaining after $t$ years, then $y(t) = y(0) e^{kt}=100e^{kt}.$

$y(30) = 100 e^{30k} = \frac{1}{2}(100) \implies e^{30k} = \frac{1}{2} \implies k = -(\ln 2) /30 \implies \\ \\
y(t) = 100e^{-(\ln 2)t/30} = 100 \cdot 2^{-t/30}$

(b) $y(100) = 100 \cdot 2^{-100/30} \approx \text{9.92 mg}$

(c)
$100 e^{- (\ln 2)t/30} = 1\ \implies\ -(\ln 2) t / 30 = \ln \frac{1}{100}\ \implies\ \\ \\
t = -30 \frac{\ln 0.01}{\ln 2} \approx \text{199.3 years}$

3 0

3 years ago

(x-1)(x+1)= выполнить умножение

Illusion [34]

Answer:

x^2-1^2

Step-by-step explanation:

formula:

(a-b)(a+b)=a^2-b^2

4 0

2 years ago

1. At a speed of 80km/h, it takes 10hrs to travel between Abuja and Lagos. How long will it takes to cover the same distance at

Softa [21]

Answer:

1. 8 hours 2. 12 pumps

Step-by-step explanation:

1. 80 ×10=800

there are 800 miles between abuja and lagos

800÷100=8

it will take 8 hours

2. with 3 pumps it takes 36 hours. you need to be 4 times quicker so you need 4 times more pumps.

4×3=12 pumps

3 0

4 years ago

Read 2 more answers