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Mamont248 [21]
3 years ago
9

Does anyone know the answer to it

Mathematics
1 answer:
Simora [160]3 years ago
6 0

Answer:

number 4

Step-by-step explanation:

you can not square root a negative number

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30 girls and boys have planned for a picnic.There is a ratio of 3 girls to 7 boys.How many boys are there?
aksik [14]
3 times 10 is 30, 7 times 10 is 70. There are 30 girls and 70 boys.
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3 years ago
Triangle ABC is isosceles where AC = CB. AC = 6a - 8 and CB = 4a - 2. Find AC.​
anastassius [24]

Answer:

10

Step-by-step explanation:

AC = CB

6a - 8 = 4a - 2

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3 years ago
What are the measures of Angles a, b, and c? Show your work and explain your
kobusy [5.1K]

Answer:

a= 30

b=60

c=105

Step-by-step explanation:

A forms a vertical angle with another angle that measures 30 degrees, therefore,

a= 30 degrees.

Since a is 30 degrees and a and b are in the same triangle with a 90-degree angle and all interior angles in a triangle equal 180 degrees.

Then, 30+90+b=180

120+b=180

b=60

Angle c and an angle that equals 75 degrees are supplementary. meaning that they add up to 180 degrees.

180-75=c

105=c

3 0
1 year ago
Please guys solve Ex:4 ,i don't know it​
steposvetlana [31]

Step-by-step explanation:

all you have to doe is type Ex:4 into the calculator and you should get your answer.

6 0
3 years ago
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A = 3.141 * (3km^2). Just put that into a calculator and bingo
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