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3 years ago

10

Simplify (3a+2)(3a-2)

1 answer:

Scrat [10]3 years ago

6 0

The answer would be 9a^2-4

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1. What are some ways that you can tell they are scaled copies?

Maksim231197 [3]

A scaled copy is a copy of an figure where every length in the original figure is multiplied by the same number. For example, triangle DEF is a scaled copy of triangle ABC. Each side length on triangle ABC was multiplied by 1.5 to get the corresponding side length on triangle DEF.

4 0

3 years ago

Need help ASAP! due soon!!!

-BARSIC- [3]

Answer:

Option B

Step-by-step explanation:

First make x = 4 and y = 3 in the equation y = -1/2x + 5

it should look like 3 = -1/2(4) + 5 now we can solve

-1/2 * 4 = -2 → 3 = -2 +5

-2 + 5 = 3 → 3 = 3

5 0

3 years ago

Melissa has a student dictionary on her desk. Her dictionary contains 75 pages. In this dictionary, more words start with the le

Radda [10]

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3 0

3 years ago

A car dealership finds that a certain model of new car has something wrong with its transmission 15% of the time. How likely is

victus00 [196]

Answer:

Unlikely, the probability is close to 0

Step-by-step explanation:

Given

$Transmission = 15\%$

Required

Determine the likelihood

The given probability, 0.15 is close to 0. This implies that the event is unlikely.

From the list of given options, option C answers the question

4 0

4 years ago

If tanA+cotA=2 then find the value of cosA

aniked [119]

Answer:

cos A=

$\frac{1}{ \sqrt{2} }$

Step-by-step explanation:

We know,

cotA=

$\frac{1}{ \tan(a) }$

Substituting the value of cot A in the given equation, we get

$\tan( a) + \frac{1}{ \tan(a) } = 2$

$\frac{{ \tan }^{2} a + 1}{ \: \tan(a) } = 2$

${ \tan }^{2 \: } a \: + 1 = 2 tan \: a$

${ \tan }^{2} a - 2 \tan \: a + 1 = 0$

$( \tan \: a - 1) {}^{2 } = 0$

$\tan \: a - 1 = \sqrt{0}$

$\tan \: a = 1$

$\tan \: a \: = \tan \: 45$

$a = 45$

$\cos \: a = \cos \: 45$

$\cos \: a = \frac{1}{ \sqrt{2} }$

4 0

3 years ago