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LUCKY_DIMON [66]
3 years ago
6

Find x. (More info in pic)

Mathematics
1 answer:
Studentka2010 [4]3 years ago
7 0

Answer:

it would be B.

Step-by-step explanation:

if you do 4x+20=3x

then you solve x by simplifying both sides of the equation and isolate the variable.

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Find k so that the numbers 2k+1,3k+4,and 7k+6 form a geometric sequnce.
Allushta [10]
Let a, b and c be in a geometric sequence, then ac = b^2
Hence, (2k + 1)(7k + 6) = (3k + 4)^2
14k^2 + 19k + 6 = 9k^2 + 24k + 16
5k^2 - 5k - 10 = 0
5k^2 + 5k - 10k - 10 = 0
5k(k + 1) - 10(k + 1) = 0
(5k - 10)(k + 1) = 0
5k - 10 = 0 or k + 1 = 0
5k = 10 or k = -1
k = 2 or k = -1

The geometric sequence formed is
2(2) + 1, 3(2) + 4, and 7(2) + 6
5, 10, and 20
OR
2(-1) + 1, 3(-1) + 4, and 7(-1) + 6
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6 0
3 years ago
Ray and Kelsey have summer internships at an engineering firm.
hoa [83]
? There’s nothing but
7 0
3 years ago
Sakura speaks 150150150 words per minute on average in Hungarian, and 190190190 words per minute on average in Polish. She once
d1i1m1o1n [39]

Answer:

300 words in Hungarian and 570 in Polish.

Step-by-step explanation:

I guess you need to know the number of words in Hungarian and in Polish.

Let H be the words he said in Hungarian, and P the words he said in Polish.

We are told that Sakura uttered a total of 270 more words in Polish than in Hungarian, therefore:

P = H + 270

And that I speak for 5 minutes, we know that the speed of words in Hungarian is 150 and in Polish it is 190, therefore:

5 = H / 150 + P / 190

Thus we have two equations and two unknowns, that is, it has a solution, replacing P:

5 = H / 150 + (H +270) / 190

5 = (190 * H + 150 * H + 270 * 150) / (150 * 190)

5 * 150 * 190 = 340 * H + 270 * 150

H = (5 * 150 * 190 - 270 * 150) / 340

H = 300

Therefore he said 300 words in Hungarian.

In Polish it would be:

P = 300 + 270 = 570

To check we have to:

300/150 + 570/190 = 5

Therefore, Sakura giving the instructions said 300 words in Hungarian and 570 in Polish.

8 0
3 years ago
Solve: Tan20. Tan 40. Tan 80<br><br>plaease help me.....​
earnstyle [38]

Answer: you need more information to solve

Step-by-step explanation:

7 0
3 years ago
If a dice is rolled 8 times, how many times is the number 2 expected to come up?
Dahasolnce [82]
The probability of rolling a 2 is 1/6.  So if you roll 8 times you would expect to roll a 2:

8(1/6)=8/6=1 1/3 times.
3 0
3 years ago
Read 2 more answers
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