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3 years ago

6

Nadia and Sergio are saving money to buy bicycles. Nadia has $10 more than twice as many dollars as Sergio . If Sergio has x dol

lars, which expression represents how much Nadia has saved

2 answers:

KatRina [158]3 years ago

4 0

2x + 10
Please mark Brainliest if it helped!

ololo11 [35]3 years ago

3 0

The answer is 2x + 10.

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Step-by-step explanation:

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3 years ago

A shop sells floor tiles at Rs 48 per square meter. A

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Answer:

c. 528000

Step-by-step explanation:

The computation of the amount that need to be paid is shown below:

Let us assume the side of the square shaped hall be X meter s

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Perimeter = 4X

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Jen is writing a financial assets and liabilities which item doesn't belong out of these choices. stocks, taxes, mortgage, and r

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3 years ago

☆15 POINTS AND MARKED BRAINLIEST IF CORRECT☆<br>look at the image above to view the question!

swat32

Answer:

3125 bacteria.

Step-by-step explanation:

We can write an exponential function to represent the situation.

We know that the current population is 100,000.

The population doubles each day.

The standard exponential function is given by:

$P(t)=a(r)^t$

Since our current population is 100,000, a = 100000.

Since our rate is doubling, r = 2.

So:

$P(t)=100000(2)^t$

We want to find the population five days ago.

So, we can say that t = -5. The negative represent the number of days that has passed.

Therefore:

$\displaystyle P(-5)=100000(2)^{-5} = 100000 \Big( \frac{1}{32}\Big) = 3125 \text{ bacteria}$

However, we dealing within this context, we really can't have negative days. Although it works in this case, it can cause some confusion. So, let's write a function based on the original population.

We know that the bacterial population had been doubling for 5 days. Let A represent the initial population. So, our function is:

$P(t)=A(2)^t$

After 5 days, we reach the 100,000 population. So, when t = 5, P(t) = 100000:

$100000=A(2)^5$

And solving for A, we acquire:

$\displaystyle A=\frac{100000}{2^5}=3125$

So, our function in terms of the original day is:

$P (t) = 3125 (2)^t$

So, it becomes apparent that the initial population (or the population 5 days ago) is 3125 bacteria.

3 0

3 years ago

Read 2 more answers

Find the area of this trapezoid. Be sure to include the correct unit in your answer. Continue 13 cm 20 cm 8 cm 5 cm 0 0/0 08 cm

kodGreya [7K]

Given:

• Upper Base of trapezoid = 8 cm

,

• Lower base = 20 cm

,

• Length of one leg (also height) = 5 cm

,

• Length of other leg = 13 cm

Let's find the area of the trapezoid.

To find the area of the trapezoid, apply the formula:

$A=\frac{a+b}{2}*h$

Where:

A is the area

a is the length of upper base = 8 cm

b is the length of the lower base = 20 cm

h is the height = 5 cm

Plug in the values for a, b, and h to find the area, A:

$\begin{gathered} A=\frac{8+20}{2}*5 \\ \\ A=\frac{28}{2}*5 \\ \\ A=14*5 \\ \\ A=70\text{ cm}^2 \end{gathered}$

Therefore, the area of the trapezoid is 70 cm^2

8 0

1 year ago