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rosijanka [135]
3 years ago
14

On a piece of paper use a protractor to construct a triangle with angle measures of 40 and 60 what is the measure of the third a

ngle?
Mathematics
1 answer:
Lina20 [59]3 years ago
7 0

Answer:

80°

Step-by-step explanation:

<u>The angles of a triangle must add up to 180°.</u>

40° + 60° + missing angle = 180°

100° + missing angle = 180°

<em>subtract 100° from both sides</em>

missing angle = 80°

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The measures of the angles of △ABC are given by the expressions in the table.
Makovka662 [10]
The sum of angles in a triangle add up to 180°, therefore to find the value of x we proceed as follows;
sum of angles in ΔABC will be:
48+(6x-28)+2x=180
putting like terms together we get
48-28+6x+2x=180
20+8x=180
8x=180-20
8x=160
x=160/8
x=20°
hence:
∠B=(6x-28)=6×20-28=92°
∠C=2x=2×20=40°
6 0
3 years ago
PLEASE HELP ASAP!! i will mark you brainliest
V125BC [204]

Answer:

1.  I am not sure about the first one. I tried everything and nothing I got from any of my work is looking right.

2. AB = 5

3. 8

4 0
4 years ago
troy's truck has a 30 gallon gas tank and gets an average of 21 miles per gallon.write an equation to represent the amount of ga
GuDViN [60]

Let

x---------> represent the number of miles Troy's has driven

y--------> represent the amount of gas in Troy's truck

we know that

the equation that represents the amount of gas, y, in troy' s truck after driving a certain number of miles, x is

y-y1=m*(x-x1)

where

m is the slope---------> \frac{gallon}{miles}

in this problem the slope is equal to -\frac{1}{21} \frac{gallons}{miles}

it's negative because the tank is going to be consumed

assuming he starts with a full tank

for\ x=0\ y=30\  gal

substitute in the formula above

y-y1=m*(x-x1)\\\\ y-30=-\frac{1}{21}*(x-0)\\\\ y=-\frac{x}{21}+30

therefore

the answer is

the equation y=-\frac{x}{21}+30

8 0
3 years ago
Read 2 more answers
Jim walks pets. He charges $2 per small dog and $3 per large dog. On Saturday he walked 3 small dogs and large dogs. How much mo
My name is Ann [436]
Jim earned $13 that day.
8 0
3 years ago
Read 2 more answers
Whoever answers right gets brainliest
Softa [21]

Answer:

37

Step-by-step explanation:

Split the arrow into a rectangle and triangle. The area of the rectangle is 7x4=28. The area of the triangle is 6*3/2=9. 28+9=37

8 0
3 years ago
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