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Doss [256]
3 years ago
14

Find m What is the m m

Mathematics
2 answers:
Fiesta28 [93]3 years ago
4 0

Answer:

120

Step-by-step explanation:

ABC is a straight line so it is equal to 180

ABC = ABD + DBC

180 = 2x + x+90

Combine like terms

180 = 3x+90

Subtract 90 from each side

180-90  = 3x+90-90

90 = 3x

Divide each side by 3

90/3 = 3x/3

30 =x

We want to find DBC

DBC = x+90

       = 30+90

        = 120

Alex3 years ago
3 0

Answer:

m<DBC=120°

Step-by-step explanation:

2x+x+90=180

3x=180-90

3x=90

x=30

m<DBC=x+90=30+90=120

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Determine the type of boundary line and shading for the graph of the inequality 5x+y grader than or equal to -10
iVinArrow [24]
5x + y > = -10
y > = -5x - 10

It will be a solid line because ur problem contains an equal sign.
It will be shaded on the side that includes the origin...because when u sub in (0,0), which is the origin, ur inequality is true
6 0
4 years ago
A rectangular garden measuring 13 meters by 15 meters is to have a gravel pathway of constant width built all around it. There i
Shtirlitz [24]

Let w represent width of the pathway.

We have been given that a rectangular garden measuring 13 meters by 15 meters is to have a gravel pathway of constant width built all around it.

Since pathway will be on all sides, so new length and width of garden with pathway would be 13+2w by 15+2w.

We are also told that there is enough gravel to cover 80 square meters. This means that area f pathway should be equal to 80 square meters.

The area of the pathway will be equal to area of garden with new dimensions minus area of garden with original dimensions.

We know that area of rectangle is width times length.

\text{Area of pathway}=(15+2w)(13+2w)-15(13)

Since we are asked to write an inequality that represents all possible widths(w), in meters, of the pathway, so area of pathway should be less than or equal to 80 square meters.

(15+2w)(13+2w)-15(13)\leq 80

Therefore, our required inequality would be (15+2w)(13+2w)-15(13)\leq 80.

8 0
3 years ago
Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of triangle PQR? Round to the n
spin [16.1K]
The answer is 22 square feet :) hope this helps
3 0
4 years ago
Read 2 more answers
7(n-6) power of 2 -x
Alexus [3.1K]

Answer:

         7(n - 6)

(2 - x)      

Step-by-step explanation:

2 - x is the base and 7(n - 6) the exponent.

The desired expression is:

         7(n - 6)

(2 - x)                  

or

(2 - x) ^ (7(n - 6))

4 0
3 years ago
Help me please, i need help with all the questions. My teacher did not explain very well
belka [17]
The questions that are 1-6 above:

Use the term
P- Parenthesis
E- Exponents
M-Multiplying
D-Dividing
A- Addition
S-Subtraction
Do the equations from that order doing Parenthesis first, Exponents second, etc.
If there's none of one of the operations, skip to the next one. Remember to solve the equation starting from parenthesis and then going down the order.
Sorry I can't help you with the bottom 1-6 Good luck
8 0
3 years ago
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