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2 years ago

Are 9x+15 and -9x-15 equivalent expressions

Mathematics

1 answer:

mixer [17]2 years ago

3 0

Answer:

Step-by-step explanation:

Yes!

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If the dot product of two nonzero vector v1 and v2 is zero, what dose this tell us

tino4ka555 [31]

It means that the two vectors are perpendicular or orthogonal

3 0

2 years ago

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Find slope (17,11), (6,-2)

Snowcat [4.5K]

Answer:

The slope is 1.181818182 or just round to 1.18.

Step-by-step explanation:

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3 years ago

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180 lb 12 oz - 79.3 kg = ___________ kg

Brrunno [24]

Answer:

$180lb\ 12 oz - 79.3kg = 2.8kg$

Step-by-step explanation:

Given

$180\ lb 12\ oz - 79.3kg$

Required

Solve

First, convert 180lb to kg

$1lb \to 0.454kg$

$180lb \to 180 *0.454kg$

$180lb \to 81.7kg$ -- to 1dp

Next, convert 12oz to kg

$1oz \to 0.03kg$

$12oz \to 12 * 0.03kg$

$12oz \to 0.4kg$ --- to 1 dp

So, the expression becomes:

$180\ lb 12\ oz - 79.3kg$

$81.7kg + 0.4kg - 79.3kg$

$= 2.8kg$

Hence:

$180lb\ 12 oz - 79.3kg = 2.8kg$

3 0

3 years ago

How many sides does a polygon have if the sum of the interior angles is 900

sammy [17]

Answer:

there are 7 sides.

Step-by-step explanation:

hope this helped you

3 0

2 years ago

Beth read a total of 12 books over 7 months.

givi [52]

She has been with her book club for 49 months.

Step-by-step explanation:

Books read = 12 books

Time period = 7 months

Therefore,

12 books = 7 months

1 book = $\frac{7}{12}\ months$

Books read so far = 84 books

Total time period = x

84 books = x months

1 book = $\frac{x}{84}\ months$

Using both unit rates;

$\frac{x}{84}=\frac{7}{12}\\x=\frac{7}{12}*84\\x=\frac{588}{12}\\x=49\ months$

She has been with her book club for 49 months.

Keywords: Unit rates, multiplication

Learn more about multiplication at:

#LearnwithBrainly

8 0

3 years ago