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nadya68 [22]
3 years ago
9

What is the answer to number 18?

Mathematics
2 answers:
Rashid [163]3 years ago
8 0
The answer to your problem is C. You start out at zero. The red line goes from 0 to 3, hinting that the first part of your expression is a positive three. The blue arrow points towards the -4. The difference between 3 and -4 is 7, and since the line goes backwards, that means that the 7 in your expression is actually a negative. This provides you with answer C: 3-7.
Serga [27]3 years ago
3 0
I bealive it is b. ( I had the exact same 7 th grade homework page ad u today;)
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Given: AB ≅ BC , m∠MOC = 135° OM − angle bisector of ∠AOB Prove: ∠ABO ≅ ∠CBO
Gennadij [26K]

Answer:

See explanation

Step-by-step explanation:

1. Angles AOM and MOC are supplementry angles. If m∠MOC = 135°, then

m∠AOM = 180° - 135° = 45°

2. OM − angle bisector of ∠AOB, then

m∠AOM = m∠MOB = 45°

3. Now

m∠BOC = m∠MOC - m∠MOB

m∠BOC = 135° - 45° = 90°

4. Since m∠BOC = 90°, BO is perpendicular to AC.

5. Consider isosceles triangle ABC (because AB ≅ BC). BO is the height drawn to the base, so it is an angle B bisector too, thus

∠ABO ≅ ∠CBO

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2 years ago
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Phantasy [73]
Area is the inside of the circle
6 0
3 years ago
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What do i do to find the value of an expression
Veseljchak [2.6K]

Answer:

A variable is a letter, for example x, y or z, that represents an unspecified number.

6+x=12

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12.

If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.

Step-by-step explanation:

6z+4x=?

 

Solution: Replace x with 3 and z with 2 to evaluate the expression.

6z+4x=?

6⋅2+4⋅3=?

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Hope this helps @(^_^)@

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2 years ago
3x-2y=-1. <br> Y=-x+3. <br> Is (1,2) a solution do the system?
andrew-mc [135]

Answer:

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Step-by-step explanation:

To figure out if (1,2) is a solution to the system, we can plug the values in and see if it is true.

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3-4=-1

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It is true for this equation. Now let's check the next one.

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2=-(1)+3

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Since both equations are true when we plug the values in, (1,2) is a solution to the system.

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3 years ago
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Julie is photocopying a letter. The original letter was 8 in wide and 11 in. long. The new copy is 12 in. wide. How long is the
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It would be 16.5 inches long.
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