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Leto [7]
3 years ago
7

PLEASEEEEEE HELPPPP!!!!!!!!

Mathematics
1 answer:
alexdok [17]3 years ago
8 0

Step-by-step explanation:

it means 13 tables have 6 chairs

and 7 tables have 4 chairs

so

total chairs in the cafeteria= 13×6 + 4×7 = 78+28=106

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The probability of an outcome that lies within 68% of the mean is a good indicator that it lies in which standard deviation?
kotegsom [21]
Yes the probability of an outcome that lies within 68% is a good indicator that lies in which standard deviation.

8 0
3 years ago
Can someone please explain how to solve this? And give me the answer?! THANK U !
Lyrx [107]

we know the segment QP is an angle bisector, namely it divides ∡SQR into two equal angles, thus ∡1 = ∡2, and ∡SQR = ∡1 + ∡2.

\bf \begin{cases} \measuredangle SQR = \measuredangle 1 + \measuredangle 2\\\\ \measuredangle 2 = \measuredangle 1 = 5x-7 \end{cases}\qquad \qquad \stackrel{\measuredangle SQR}{7x+13} = (\stackrel{\measuredangle 1}{5x-7})+(\stackrel{\measuredangle 2}{5x-7}) \\\\\\ 7x+13 = 10x-14\implies 13=3x-14\implies 27=3x \\\\\\ \cfrac{27}{3}=x\implies 9=x \\\\[-0.35em] ~\dotfill\\\\ \measuredangle SQR = 7(9)+13\implies \measuredangle SQR = 76

4 0
3 years ago
Y’all know this anything about this?
Andre45 [30]

We are given:

  • Parallelogram CDEF
  • ∠C = 13x - 10
  • ∠D = 5x + 10

To Find: ∠E

Concept Used:

  • Adjacent angles of a Parallelogram are Supplementary

Finding the value of 'x':

Since adjacent angles of a parallelogram are Supplementary:

∠D + ∠C = 180

5x + 10 + 13x - 10 = 180              [replacing the values of angle C and D]

18x = 180

x = 10                                          [dividing both sides by 18]

__________________________________________________________

Finding Measure of Angle D:

We are given that:

∠D = 5x + 10

∠D = 5(10) + 10                    [since x = 10]

∠D = 60°

__________________________________________________________

Finding the measure of ∠E:

∠D and ∠E are Adjacent angles

Since Adjacent angles are Supplementary:

∠D + ∠E = 180

60 + ∠E = 180

∠E = 120°                                  [subtracting 60 from both sides]

Hence, the measure of ∠E = 120°

7 0
2 years ago
How tall is the welcome sign​
lisov135 [29]

Answer:

the sign is 5 ft tall

Step-by-step explanation:

30 % 12.5=2.4

12 % 2.4=5

4 0
3 years ago
Write two expressions to show w increased by 4.
iren2701 [21]

Answer:

4+w and w+4

Step-by-step explanation:

I used communative property where you simply flip flop the answers

5 0
3 years ago
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