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bonufazy [111]
3 years ago
14

Pls help me i dont get it :(

Mathematics
2 answers:
Murljashka [212]3 years ago
5 0

Answer:

<h2>7.  x = 64</h2><h2>8.  x = 12</h2><h2>9.  x = 12</h2>

Step-by-step explanation:

7. alternate angle or opposite angle are equal

   128 = 2x

    x = 128 / 2

    x = 64

8.  interior angles = 180

    180 = 72 + (7x + 24)

    180 - 72 - 24 = 7x

     x = 84 / 7

     x = 12

9.   same side angle = 180

     180 = 65 + (11x - 17)

     180 - 65 + 17 = 11x

     x = 132 / 11

     x = 12

ValentinkaMS [17]3 years ago
3 0

Answer:

7.alternate interior

x=64

8. same side interior

x=12

same side exterior

x=12

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20b^2

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A school district transported a total of 409 students and teachers to a zoo in buses and vans.
valina [46]

Answer: There are 385 students and teachers who rode to the zoo in buses and 24 students and teachers who rode to the zoo in trains.

Step-by-step explanation:

Since we have given that

Total number of students and teachers = 409

Let the number of vans be x

Let the number of buses be x+5

Number of students and teachers each bus transported = 55

Number of students and teachers each van transported = 12

According to question,

55(x+5)+12x=409\\\\55x+275+12x=409\\\\67x=409-275\\\\67x=134\\\\x=\frac{134}{67}\\\\x=2

Total number of students and teachers who rode to the zoo in buses will be

55(x+5)\\\\=55(2+5)\\\\=55\times 7\\\\=385

Total number of students and teachers who rode to the zoo in vans will be

12x\\\\=12\times 2=24

Hence, there are 385 students and teachers who rode to the zoo in buses and 24 students and teachers who rode to the zoo in trains.

6 0
3 years ago
Find the sum 14 + (-9) + (-20)
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Which conversion factors are used to multiply to 18cm/ s to get meters per minute?
Nimfa-mama [501]

Remark

The short answer is you multiply 0.6 times the cm/s to get m/min.

Solve

Though you didn't ask for it, here's the way it is done. Notice that each set of brackets cancels the units of a set of brackets to the left of the set of brackets you are observing. This is called unit analysis. The answer is given below.

\frac{18 cm}{sec} *[\frac{60 cm}{1 min}] * [\frac{1 m}{100 cm}] = 18*0.6\frac{m}{min}=10.8\frac{m}{min}

8 0
3 years ago
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