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2 years ago

Al sumar 2x+5y-4z+9 y 2x-4y+6 se obtiene?

Mathematics

1 answer:

Ilia_Sergeevich [38]2 years ago

8 0

Answer: (Responder)

4x + y + 15 – 4z

Step-by-step explanation: (Explicación paso a paso)

(2x + 5y – 4z) + (9 + 2x – 4y + 6)

Group Like Terms (Agrupar términos similares)

2x + 2x + 5y – 4y – 4z + 9 + 6

Add Similar Elements (Agregar elementos similares)

4x + 5y – 4y – 4z + 9 + 6

4x + y – 4z + 9 + 6

Add The Numbers (Suma los números)

4x + y + 15 – 4z

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What’s the answers for all of these

cupoosta [38]

1. angles 7 and 3, angles 2 and 6
2. angle 1
3. they’re alternate exterior angles
4. they’re consecutive interior angles
5. angle 2
6. angle 4

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2 years ago

Mark earned a 64 on his last science quiz. If Mark’s z-score was -2.8 and the standard deviation was 10, find the mean grade on

docker41 [41]

Answer:

he score is 2.15 standard deviations above the mean.

Step-by-step explanation:

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2 years ago

What is the value of tan M?

Lelu [443]

Answer:

The value of tan M = 15/8

Step-by-step explanation:

$tan \: m \: = \frac{p}{b} \\ tan \: m \: = \frac{15}{8}$

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2 years ago

Determine which lines, if any, are parallel or perpendicular. Explain.

Orlov [11]

Answer:

line a and b are parallel, there is no perpendicular lines

Step-by-step explanation:

Looking at the slope of each line, you can identify whether the lines are parallel, perpendicularlar, or neither.

When the slopes are the same, they are parallel.

When the slopes have opposite sign and numerator and denominator flipped, they are perpendicular. Ex. $\frac{a}{b}$ and $-\frac{b}{a}$ are perpendicular slopes.

Finding slope is using the formula: $\frac{y_{2}-y_{1} }{x_{2} -x_{1} }$

Line a has slope $\frac{3-4}{4-0}$ = $-\frac{1}{4}$

Line b also has slope $-\frac{1}{4}$

Line c has slope 2

Since slope of line a and b are same, they are parallel.

Line c is not perpendicular to line a and b because the slope should have opposite sign and numerator and denominator flipped, which is 4 not 2.

4 0

3 years ago

A necktie costing $30.00 per dozen and selling for $5 each (be careful- find the cost of one tie before you subtract.) 0.25 2.50

Vikki [24]

Here is the answer to the problem above. Given that a necktie is sold per dozen and costs $30.00 and sells it for $5. In order for us to know the price per necktie, we just have to divide 30 by 12 since one dozen is 12. 30 divided by 12, and the answer is 2.5. So the cost of one tie is $2.5. Hope this answers your question.

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3 years ago

Read 2 more answers