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Semenov [28]
3 years ago
15

Can somebody help me find x? x = a.7 b.4 c.9

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

a

Step-by-step explanation:

Ber [7]3 years ago
6 0

9 maybe I think so sorry hsagfajjajaajjhjhj

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The ratio of the number of boys to the number of girls at school is 4:5. what fraction of the students are boys?
Arisa [49]
Boys to girls is 4:5.......added = 9

so 4/9 are boys and 5/9 are girls
5 0
3 years ago
Pls help and hurry i will report if you answer any unnecessary answers.
sleet_krkn [62]

Answer:

847.8 sq meters

Step-by-step explanation:

Formula:

A= 2πrh + 2πr^2

A= 2(3.14)(9)(6) + 2(3.14)9^2

A= 339.12 + 508.68

A= 847.8

7 0
2 years ago
Creatividad a división problem with a 2 digit divisor. Using more then 1 set of compatible numbers, observe what happens when yo
Burka [1]
180/10=18 is one but the easitest way is with tens or hundreds

8 0
3 years ago
If ON= 5x - 7, LM = 4x+ 4, NM = x -7, and OL =3y-4, find the values of c and y for which LMNO MUST BE a parallelogram.
Sholpan [36]

Answer:

x=11, y=8/3

Step-by-step explanation:

Consider quadrilateral LMNO. If this quadrilateral MUST BE a parallelogram, then

LM=NO

and

LO=MN

Thus,

\left\{\begin{array}{l}4x+4=5x-7\\ \\x-7=3y-4\end{array}\right.

Solve this system of two equations. From the first equation:

4x-5x=-7-4\\ \\-x=-11\\ \\x=11

Substitute it into the second equation:

11-7=3y-4\\ \\3y-4=4\\ \\3y=4+4\\ \\3y=8\\ \\y=\dfrac{8}{3}

4 0
3 years ago
Please help me!
Alexxandr [17]

A right triangle has one leg with unknown length, the other leg with length of 5 m, and the hypotenuse with length 13 times sqrt 5 m.

We can use the Pythagorean formula to find the other leg of the right triangle.

a²+b²=c²

Where a and b are the legs of the triangle and c is the hypotenuse.

According to the given problem,

one leg: a= 5m and hypotenuse: c=13√5 m.

So, we can plug in these values in the above equation to get the value of unknown side:b. Hence,

5²+b²=(13√5)²

25 + b² = 13²*(√5)²

25 + b² = 169* 5

25+ b² = 845

25 + b² - 25 = 845 - 25

b² = 820

b =√ 820

b = √(4*205)

b = √4 *√205

b = 2√205

b= 2* 14.32

b = 28.64

So, b= 28.6 (Rounded to one decimal place)

Hence, the exact length of the unknown leg is 2√205m or 28.6 m (approximately).

5 0
3 years ago
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