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Mkey [24]
3 years ago
10

PLSSS HELP IF YOU TURLY KNOW THISS AND EXPLAIN PLS:)

Mathematics
2 answers:
skelet666 [1.2K]3 years ago
4 0

Answer: x=36

Step-by-step explanation: first, subtract 12 from both sides of the equation. X/2 + 12 = 84. X/2=72, then divide both sides of the equation by two to isolate the variable. X=36

Hope this helped! Comment any questions about this!

nikitadnepr [17]3 years ago
4 0

Answer: x=144

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable

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You have been asked to set up chairs for the school concert.
DanielleElmas [232]

Step-by-step explanation:

middle section= 390

sides=270

total=930 chairs

5 0
3 years ago
jane loves animals. She has an equal number of beetles, birds and spiders as pets. Apart from human legs, there is a total of 27
kherson [118]

Answer:

16.875 spiders

Step-by-step explanation:

Given

Let

B = Beetles

C = Birds

S = Spiders

So, we have:

B = C = S --- equal amounts

6B + 2C + 8S = 270 --- the legs

Required

The number of spider

Since she has an equal amount of B, C and S;

The expression can be written as:

6B + 2C + 8S = 270

6S + 2S + 8S = 270

16S = 270

Solve for S

S = \frac{270}{16}

S = 16.875

<em>The result of the solution does not represent real life situation because it it is not possible to have a fraction number of spider</em>

5 0
3 years ago
On each trial of an experiment, a subject is presented with a constant soft noise, which is interrupted at some unpredictable ti
Julli [10]

Answer:

25th percentile = 202

80th percentile = 285

Step-by-step explanation:

Rearranging the values in increasing order

164

171

175

202

217

226

231

241

257

261

269

273

285

296

311

N = total number of variables = 15.

25th percentile = [(N + 1)/4]th variable = (15 + 1)/4 = 4th variable.

So, the 25th percentile = 4th variable = 202.

80th percentile = 0.8(N + 1) th variable = 0.8 × (15 + 1) = 12.8th variable = 13th variable = 285

6 0
3 years ago
If m DBC = 25x+ 7 and m TBC = 12x+ 5 =, find the degree measures of TBC, DBT, and DBC.
AlladinOne [14]
I honestly don't know any of this so
5 0
3 years ago
Read 2 more answers
(10) Both red line and blue line trains left the station at 5:00 pm. If both
scoundrel [369]

Answer:

5:40

Step-by-step explanation:

This is a problem involving the least common difference.

If you know that the red and blue trains left at the same time at 5, you know that another red train will leave at 5:08. Another blue train at 5:10.

The way to solve this will be to write out the factors of 8 and 10 and find the smallest number that they overlap.

Red:

8, 16, 24, 32, 40, 48, 56, 64, 72, 80

Blue:

10, 20, 30, 40

You see that after 40 mnutes, they are both leaving the station again. After 40 minutes, at 5:40, they are both leaving.

6 0
3 years ago
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