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pogonyaev
3 years ago
5

In this polygon Find x

Mathematics
1 answer:
max2010maxim [7]3 years ago
7 0

Answer:

x=125

Step-by-step explanation:

A 7 sided figure (heptagon) has interior angles equaling 900°. (7-2)x180

900-60-90=750

6x=750

x=750÷6

x=125

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What is y=\dfrac{2}{3}x+4y=
lara [203]

Answer:

12y+x-12=0

Step-by-step explanation:

If I'm not mistaken by the question, we have

x+4y=\dfrac{2}{3}x+4

Multiply through by the LCM of all the denominators to clear the fractions. Since we have only one fraction, we multiply through by its LCM (3)

3\timesx+3\times4y=3\times\dfrac{2}{3}x+3\times4

3x+12y=2x+12

Putting all terms on the LHS (left hand side) and evaluating,

12y+x-12=0

5 0
3 years ago
380 KS3 students 240 KS4 students 110 KS5 students pick out 100 from all them combined estimate how many KS3 students there will
Leokris [45]

Answer: 52

Step-by-step explanation:

KS3 students = 380

KS4 students = 240

KS5 students = 110

Total number of students = 730

Estimated number of KS3 students will be:

= 380/730 × 100.

= 52.06

= 52.

There'll be 52 KS3 students

7 0
3 years ago
Round 725,390 to da nearest thousand
Sergeeva-Olga [200]

Answer:725000

Step-by-step explanation:in thousands you have 5,390. Sound you’re rounding down from the hundredth position of 390. 390 is below 500 so go down a thousand.

4 0
3 years ago
A new cellular phone tower services all phones within a 20 mile radius. Doreen lives 16 miles east and 12 miles south of the tow
Lunna [17]

Answer: Yes.

Step-by-step explanation:

Hi, since the situation forms a right triangle (see attachment) we have to apply the Pythagorean Theorem:

c^2 = a^2 + b^2

Where c is the hypotenuse of the triangle (in this case the distance between Doreen’s house and the tower) and a and b are the other sides.

Replacing with the values given:

c^2 = 16^2 + 12^2

c^2 = 256+144

c^2 = 400

c = √400

c = 20 miles

So, she is within the area serviced by the tower (20 miles)

Feel free to ask for more if needed or if you did not understand something.

3 0
4 years ago
How many pencils measure 6 inches ​
maksim [4K]

Answer:

11

Step-by-step explanation:

because that are 11 pencils that are 6 inches or longer, that's what the picture says.

6 0
3 years ago
Read 2 more answers
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