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3 years ago

HELP NEEDED !!! find the size of unknown angles

Mathematics

1 answer:

Karolina [17]3 years ago

8 0

Explanation :

The line DF is parallel to OB, therefore Angle x = Angle y.

( because, they for corresponding angle pair which are equal. )

And the angle made by an arc at center is always double the angle made by the same arc at its boundary, hence

x = 22° × 2

x = 44°

y = 44° ( cuz, x = y )

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Find the quotient. -72 / -12 =

Shkiper50 [21]

Step-by-step explanation:

it's 6

as,

-12 × 6 = -72

hope this helps you!

4 0

2 years ago

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HELP MEE!!! PLEASE

prohojiy [21]

Answer: 45 items

Step-by-step explanation:

2 key chains in 5 bags so 2+2+2+2+2=10

Then it says 7 treats in each 5 bags so

7+7+7+7+7=35

So 10+35=45 so she had 45 items

And put 9 items in each bag

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2 years ago

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Westkost [7]

Answer:

The answer is 1/15

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3 years ago

Can someone please explain to me step by step how to solve this problem. 4y-(3+y);y=2

avanturin [10]

Answer:

The answer is 3

Step-by-step explanation:

Plug in 2 for all the y variables and solve:

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3 years ago

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Serena wants to solve the following system of equations in the most efficient way.

Marianna [84]

Answer:

Serina should have solved for x in the second equation because it has a coefficient of 1.

Step-by-step explanation:

we have

$2x+3y=18$ ----> equation A

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we know that

To solve the system of equations in the most efficient way, solve for x equation B and then substitute the value of x in equation A

$x=31-7y$ ----> equation C

substitute equation C in equation A

$2(31-7y)+3y=18$

solve for y

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Find the value of x

substitute the value of y in the equation C

$x=31-7(4)=3$

The solution is (3,4)

therefore

Serina should have solved for x in the second equation because it has a coefficient of 1.

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3 years ago

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