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Minchanka [31]
3 years ago
14

Where do I put the parentheses in 21-8-6=7

Mathematics
2 answers:
Sliva [168]3 years ago
7 0

Answer:

around 21-8 so the equation would look like this (21-8)-6=7

Step-by-step explanation:

you do this because if u put the parentheses around 8-6 you would get 21- (8-6)= 19 because 21 - 2 = 19 so you have to put them around 21-8 to get the right answer

Pavel [41]3 years ago
4 0

Answer:

(21-8)-6=7

Step-by-step explanation:

If you put the parentheses holding the 8-6 it makes the statement equal 19 and the other way is true so ya hope this helps <3

Also can you give brainliest to all of your questions bc it really hard to get brainliest and it be really nice you can choose who i dont really care but just please do it it helps a lot

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Need help finding measure of angle R.
Hunter-Best [27]

Answer:

B.) 113°

Step-by-step explanation:

In the isosceles trapezoid, angles T and S are congruent. Find the value of x:

4x+7=7x-38

Subtract 4x from both sides:

4x-4x+7=7x-38-4x\\7=3x-38

Add 38 to both sides:

7+38=3x-38+38\\45=3x

Divide both sides by 3:

\frac{45}{3}=\frac{3x}{3}\\\\  15=x\\\\x=15

x is equal to 15. Now substitute the value of x into the one of the expressions:

4(15)+7\\60+7\\67

or

7(15)-38\\105-38\\67

The angles T and S are 67°.

The angles of a trapezoid will always add up to a total of 360°, so add the angles T and S:

67+67=134

Subtract their total from 360:

360-134=226

The total of the angles Q and R is 226°. Since this is an isosceles trapezoid, those two angles are also congruent. Divide the value by 2:

\frac{226}{2}= 113

Angle R is 113°.

Done.

7 0
3 years ago
Check all that apply. If sing = 15, then:
Montano1993 [528]
The question isn’t complete
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4 years ago
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lisabon 2012 [21]

Answer:

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Step-by-step explanation:

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4 years ago
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X² + 6x +8=0<br> In factoring algorithm
Mama L [17]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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What is 9 + 10 ? I’m so confused. People keep telling me it’s 21 but it doesn’t seem right.
juin [17]

Answer:

It's 21.

Step-by-step explanation:

The factors of 9 are 3 and 3. (You need to multiply 3x3 to get 9.) The factors of 10 are 5 and 2. But, if you multiply 3 by 5, which gives you 15, and multiply the other 3 by 2, which gives you 6, and then add 6 to 15, you get 21.

8 0
4 years ago
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