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In-s [12.5K]
4 years ago
7

6. The measures of the three angles of a triangle

Mathematics
1 answer:
kykrilka [37]4 years ago
8 0
90

3x+x-15+2x+15=180
6x=180
Divide each side by 6
X= 30

Now go back to each angle and substitute 30 for x

(3 x 30)= 90
(30-15)= 15
(2(30)+15)=75
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Guys please help me with this question
Kruka [31]

Answer:

if it's gonna equal 12 then a and b equals 6

Step-by-step explanation:

a/b

a=6

b=6

6/6

12

4 0
3 years ago
PLEASE HELP ASAP!!!!!
dezoksy [38]
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4 0
3 years ago
It's a little blurry sorry please help
Ghella [55]

<u>Answer:</u>

It's X=2

<u>Working out:</u>

<u>(left one):</u>

2(x+3)=10

2x+6=10

2x=10-6

2x=4

x=2

Working out:

(right one):

2(x+3) must be all divided by 2 so it will be x+3 and same for 10, it will be 5 so...

x+3=5

x=5-3

x=2

Hope it helps ^---^

3 0
3 years ago
Read 2 more answers
X(2x-5)+x(2x-3)=(4x+6)(x-3)
Helga [31]

Answer:

x=9

Step-by-step explanation:

4 0
4 years ago
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The following list shows the items and prices for a restaurant order. Calculate the total amount if there is 7.5% tax and the cu
Rainbow [258]

The first thing we are going to do to find the total cost of the meal before tax:

Total cost before tax = $8.99 + 2($14.99) + $12.99 + 3($1.99)

Total cost before tax = $8.99 + $29.98 + 12.99 + $5.97

Total cost before tax = $57.93

Regarding the 15% gratuity, remember that the unofficial rule for tipping at restaurants is to tip according to the actual value of the meal and not the tax, so we calculate the value of the tip first, and then we add it to the total at the end of our calculations.

Tip = 15%($57.93) = $8.69

Now, lets calculate the tax

Tax = 7.5%($57.93) = $4.34

Finally, we can calculate the total cost of the meal

Total cost = cost before tax + tip + tax

Total cost = $57.93 + $8.69 + $4.34 = $70.96

We can conclude that the correct answer is a. $70.96

3 0
3 years ago
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