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Bogdan [553]
4 years ago
15

I need the answer written

Mathematics
2 answers:
PilotLPTM [1.2K]4 years ago
8 0

Answer:

x = 180 - (31 + 40)

Step-by-step explanation:

Note that the angle of a straight line has a measurement of 180°

31 + x + 40 = 180°

Isolate the variable x. Note the equal sign, what you do to one side, you do to the other. Subtract 31 and 40 from both sides.

x + (40 + 31) (- (40 + 31)) = 180 (- (40 + 31))

x = 180 - (40 + 31)

~

padilas [110]4 years ago
5 0

Answer:

x = 180 - (31 + 40)

Step-by-step explanation:

x = 180 - (31 + 40)

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The owner of a 4000-gal oil truck loads the truck with gasoline and keroseno. The profit on each gallon of gasoline is 16e and o
lilavasa [31]

Answer:

There were 35 gallons of gasoline and 500 gallons of kerosene.

Step-by-step explanation:

<u>Step 1: Write data for equation 1</u>

<em>Let gallons of kerosene be x</em>

<em>Let gallons of gasoline be y</em>

<em>Total capacity of truck is 4000</em>

<u>Step 2: Form equation 1</u>

x + y = 4000

<u>Step 3: Write data for equation 2</u>

<em>Profit of total gallons of kerosene is 0.12x</em>

<em>Profit of total gallons of gasoline is 16y</em>

<em>Total profit is $620</em>

<u>Step 4: Form equation 2</u>

0.12x + 16y = 620

<u>Step 5: Find x in terms of y from equation 1</u>

x + y = 4000

x = 4000 - y

<u>Step 6: Substitute value of x in equation 2</u>

0.12x + 16y = 620

0.12 (4000 - y) + 16y = 620

480 - 12y + 16y = 620

4y = 620 - 480

y = 140/4

y = 35

<u>Step 7: Substitute value of y in equation 1 to find x</u>

0.12x + 16y = 620

0.12x + 16 ( 35 ) = 620

0.12x = 60

x = 500

There were 35 gallons of gasoline and 500 gallons of kerosene.

!!

6 0
3 years ago
What did he do wrong
umka2103 [35]

Answer:

nothing

Step-by-step explanation:

there was no mistake at all he did it all correct he subtract 11 from both sides the divided by 2 correctly.

7 0
3 years ago
This is for anyone who has ever been cheated on before...
Evgen [1.6K]

Answer:

thank you

Step-by-step explanation:

4 0
3 years ago
John went to the deli on his lunch hour he bought 1.3 lbs of roast beef and 0.6 lbs of cheese both were on sale for $3.99 per po
aleksley [76]

Johns total at the deli is $ 7.58

<u>Solution:</u>

Given, John went to the deli on his lunch hour he bought 1.3 lbs of roast beef and 0.6 lbs of cheese both were on sale for $3.99 per pound.  

We have to find the nearest cent how much was Johns total at the deli

Now, we know that, total cost = cost of beef + cost of cheese

Total cost = amount of beef bought \times cost of beef per pound + amount of cheese bought \times cost of cheese per pound  

Total amount = 1.3 \times 3.99 + 0.6 \times 3.99

Total amount = 3.99(1.3 + 0.6) = 3.99 x 1.9

Total amount = 7.581

Hence, the total amount was $7.58

4 0
3 years ago
If p=m and n=16 in the equation m/45 = n/p, what is the value of m?
Andrej [43]
M=p=x
x/45=16/x
x^2=720
x=sqrt(720)
sqrt mean root
m= sqrt(720)
6 0
3 years ago
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