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3 years ago

Help with math, type letter

Mathematics

2 answers:

Eddi Din [679]3 years ago

7 0

Answer:

The answer is D. mark me brainliest plz.

Step-by-step explanation:

Happy New Years

e-lub [12.9K]3 years ago

6 0

Answer:

$\large\boxed{D.\ \dfrac{practice\cdot days}{distractions^2}}$

Step-by-step explanation:

$S=\dfrac{P\cdot t}{D^2}\\\\P\to practice\\t\to days\\D\to distractions\\\\S=\dfrac{P\cdot t}{D^2}\ \bigg(\dfrac{practice\cdot days}{distractions^2}\bigg)$

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I’m supposed to solve this by eliminating the x variable

liberstina [14]

Answer:

the answer is (-4, 5)

Step-by-step explanation:

Let's use elimination by addition / subtraction:

-6x - 2y = 14

6x + 7y = 11

-------------------

5y = 25, so y = 5.

Substituting 5 for y in the 2nd equation, we get:

6x + 7(5) = 11, or:

6x + 35 = 11, or

6x = -24, or x = -4.

Thus, the answer is (-4, 5). Please double check to ensure you have copied down both system of equations and answer correctly.

Check: Is (-4, 5) a solution to this system?

Subst. -4 for x and 5 for y in the first equation:

-3(-4) - (5) = 7

12 - 5 = 7 YES

3 0

3 years ago

Karen purchased a prepaid phone card for $15. Long-distance calls cost 19 cents a minute using this card. Karen used her card on

Anna [14]

Answer:

I am pretty sure the answer is 11 minutes and the cost was $2.09

Step-by-step explanation:

Ihope this helps you:)

5 0

3 years ago

Read 2 more answers

Given that m angle G- 81", what is m angle I?<br> A)81"<br> B)89<br> C)91<br> D)99

seraphim [82]

Answer:

$\text{D) }99^{\circ}$

Step-by-step explanation:

Define a cyclic quadrilateral by a quadrilateral that is circumscribed by a circle. In this case, since the quadrilateral shown is circumscribed by a circle, it is a cyclic quadrilateral.

A property of all cyclic quadrilaterals is that their opposite angles are supplementary, meaning they add up to 180 degrees. Since $\angle G$ and $\angle I$ are opposite angles in the quadrilateral, they must be supplementary. Therefore, we have the equation: