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3 years ago

50 POINTS+ BRAINLIEST ANSWER

Mathematics

2 answers:

Stella [2.4K]3 years ago

5 0

Answer:

The one with a median of 13

Step-by-step explanation:

Delvig [45]3 years ago

4 0

Answer:

Step-by-step explanation:

the one that the median is 14

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How do you solve <br> 1-cos2x/cosx •cscx=tanx

astra-53 [7]

(1-cos^2x/cosx)*cosecx
(sin^2x/cosx)*sinx (where 1-cos^2x=sin^2x) and 1/cscx=sinx

sinx/cosx=tanx(divide by sinx)
hence proved

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3 years ago

I dont get this, can anyone help?

balandron [24]

Answer:

this is an x y coordinate plane, start with x and then move to y.

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3 years ago

Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller

horsena [70]

Answer: 20 feet by 20 feet.

Step-by-step explanation:

1. You know that $x$ is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for $x$ , as you can see below:

- You have that:

$(a-b)^{2}=a^{2}-2ab+b^{2}$

- Then, you obtain the following quadratic equation:

$(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0$

- Apply the Quadratic formula to solve it:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80$

- Then, you obtain:

$x_1=20\\x_2=-4$

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.

3 0

4 years ago

Read 2 more answers

What is the lcm of 6 and 4

IceJOKER [234]

12 The least common multiple of 6 and 4 is 12

3 0

3 years ago

Read 2 more answers

How many terms are there in a geometric series if the first terms is 2, the common ratio is 4, and the sum of the series is 2,73

arsen [322]

The sum of n terms of a geometric series is given by
$S_{n}=a_{1}\dfrac{r^{n}-1}{r-1}$

Substituting the given numbers, you have
$2730=2\dfrac{4^{n}-1}{4-1}\\\\2730\dfrac{3}{2}=4^{n}-1\\\\4096=4^{n}\\\\\dfrac{\log(4096)}{\log(4)}=n=6$

There are 6 terms in the series.

4 0

3 years ago