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2 years ago

How much would it cost him in interest over 5 months if he used card A to make the purchase?

Mathematics

1 answer:

Kamila [148]2 years ago

4 0

Answer:

I need a little bit more detail in the question to answer.

Step-by-step explanation:

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Help ASAP Please!!!!

choli [55]

Answer:

It's B. f(x) = (x + 3(^2 + 1.

Step-by-step explanation:

f(x) ---- > f(x + 3) is a translation of 3 units to the left.

8 0

3 years ago

A vaccine, which is currently in use, is known to be 80% effective. A pharmaceutical company has developed a newvaccine and the

storchak [24]

Answer:

The correct answer is B) 18%

Step-by-step explanation:

Note that the vaccine is already and is 80% effective. This means that if the entire population was administered with the vaccine, only 8/10 would gain immunity leaving 2/10 or 0.2 exposed.

If the new vaccine, therefore, is supposed to be 90% effective, it is only pragmatic to administer it against those who do not have immunity which is 0.2 of the existing population.

So to get the percentage that will develop immunity, we have:

0.2 x 0.9 = 0.18 or 18%

Cheers!

4 0

2 years ago

Estimate the integral ∫6,0 x^2dx by the midpoint estimate, n = 6

Anettt [7]

Splitting up the interval [0, 6] into 6 subintervals means we have

$[0,1]\cup[1,2]\cup[2,3]\cup\cdots\cup[5,6]$

and the respective midpoints are $\dfrac12,\dfrac32,\dfrac52,\ldots,\dfrac{11}2$ . We can write these sequentially as ${x_i}^*=\dfrac{2i+1}2$ where $0\le i\le5$ .

So the integral is approximately

$\displaystyle\int_0^6x^2\,\mathrm dx\approx\sum_{i=0}^5({x_i}^*)^2\Delta x_i=\frac{6-0}6\sum_{i=0}^5({x_i}^*)^2=\sum_{i=0}^5\left(\frac{2i+1}2\right)^2$

Recall that

$\displaystyle\sum_{i=1}^ni^2=\frac{n(n+1)(2n+1)}6$
$\displaystyle\sum_{i=1}^ni=\frac{n(n+1)}2$
$\displaystyle\sum_{i=1}^n1=n$

so our sum becomes

$\displaystyle\sum_{i=0}^5\left(\frac{2i+1}2\right)^2=\sum_{i=0}^5\left(i^2+i+\frac14\right)$
$=\displaystyle\frac{5(6)(11)}6+\frac{5(6)}2+\frac54=\frac{143}2$

8 0

2 years ago

3(x+3)-5x simplify<br> Answer

Lelu [443]

Answer: -2x + 9

First, Use the distributive property: 3(x+3)-5x (3 multiplied by x is 3x and 3 multiplied by 3 is 9

Next, subtract the variable x: 3x+9-5x (3x-5x=-2x

The answer is -2x+9

7 0

2 years ago

Read 2 more answers

The measure of an angle is 9°. what is the measure of a complementary angle?

MaRussiya [10]

Complementary angles sum upto 90°
so the complement of 9° = 81°

8 0

2 years ago