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Aleonysh [2.5K]
4 years ago
15

Is a = 2.4 a solution to the equation below? Show why or why not. 9a-3 = 4a +9

Mathematics
1 answer:
Tanzania [10]4 years ago
4 0

Answer:

Yes

Step-by-step explanation:

Both equations equal 18.6. Just plug in 2.4 for a to check

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Please helppppppppppp me so the problem its jessica said that the sum of −8+d is always positive when the value of d is greater
Alex_Xolod [135]
<h3>Answer: Sometimes true</h3>

========================================================

Explanation:

-8+d is positive only when d > 8

Here's why

-8+d > 0

-8+d+8 > 0+8 .... add 8 to both sides

d > 8

So if Jessica said "d is greater than 8", then her claim would always be correct.

However, her claim is sometimes true.

Two counter examples could be when d = 1 and d = 2.

If d = 1, then -8+d = -8+1 = -7 which isn't positive.

If d = 2, then -8+d = -8+2 = -6 which also isn't positive.

Basically if d is anything smaller than 8, then you'll have -8+d be negative.

If d is something larger than 8, say d = 9, then -8+d = -8+9 = 1 which is finally positive.

4 0
3 years ago
Can override the brain's other functions.<br> A. Emotions<br> B. Smells<br> C. Music<br> D. Calmness
mr Goodwill [35]
Emotions because they make you want to make decisions that you wouldn’t make normally
3 0
4 years ago
Read 2 more answers
What are all natural number factors of 130
harina [27]
<span>1, 2, 5, 10, 13, 26, 65, 130 are the natural number factors of 130.

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3 0
3 years ago
Which table shows the relationship y = 50x?
VikaD [51]

Answer:

\displaystyle y = \frac{4}{5}x

B. x 1 3 4 5

y 50 150 200 250

Step-by-step explanation:

First, find the <em>rate of</em><em> </em><em>change</em><em> </em>[<em>slope</em>]:

\displaystyle \frac{-y_1 + y_2}{-x_1 + x_2} = m \\ \\ \frac{0 + 24}{0 + 30} = \frac{24}{30} = \frac{4}{5} \\ \\ y = \frac{4}{5}x

We can write the equation from here, since both the x-intercept and y-intercept are at the origin.

_______________________________________________

Now, all you have to do is input each value into the function to confirm their authenticities. Once you do this, you WILL arrive at answer choice B).

I am joyous to assist you anytime.

4 0
4 years ago
Given sin theta=5/13 and cos theta=12/13, which of the following can be proven using a Pythagorean identity?
ZanzabumX [31]

Answer:

4th option

Step-by-step explanation:

given

sinΘ = \frac{5}{13} and cosΘ = \frac{12}{13} , then

( \frac{5}{13} )² + ( \frac{12}{13} )²

= \frac{25}{169} + \frac{144}{169}

= \frac{25+144}{169}

= \frac{169}{169}

= 1

showing sin²Θ + cos²Θ = 1

4 0
2 years ago
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