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Naddik [55]
2 years ago
12

Angle 2 is 2x+10 angle 4 is 4x+80 solve for x

Mathematics
1 answer:
Airida [17]2 years ago
7 0

Answer:

15

Step-by-step explanation:

Angle 2 is 2x+10

angle 4 is 4x+80

and from the figure we can understand that when we add these 2 equations

We get

6x+ 90= 180

6x = 180 - 90= 90

6x= 90

x = 90 ÷ 6 = 15

answer = 15

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a box of crackers says that now it contains 15% more. Originally it came with 12 ounces of crackers. how many crackers does the
Verizon [17]

Answer:

It comes with 13.8 ounces of crackers now.

Step-by-step explanation:

12 + 15% = 13.8

6 0
3 years ago
George and Paul use a metal alloy that is 18.1% copper to make jewelry. How many ounces of an alloy that is 14% copper must be m
ella [17]

Answer:

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

Step-by-step explanation:

Each ounce of the 14% copper contains 0.14 ounce of pure copper.

Each ounce of the 23% copper contains 0.23 ounce of pure copper.

Each ounce of the 18.1% copper contains 0.181 ounce of pure copper.

Use x ounces of the 14% and y ounces of the 23% to make 90 ounces of 18.1% alloy.

x+y  = 90

y = 90-x

0.14x + 0.23y = 0.181·90

0.14x + 0.23(90-x) = 16.29

0.14x + 20.7 - 0.23x = 16.29

-0.09x + 20.7 = 16.29

4.41 = 0.09x

x = 49

y = 90-x = 41

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

7 0
3 years ago
12:55 P.M. the movies was 2 hours and 25 minutes long after the movies they played a card game for 1 hour and 25 minutes and the
nlexa [21]

Answer:

7:25 P.M.

Step-by-step explanation:

Add 2:25, 1:25, and 2:40 = 6:30 and add that to 12:55= 19:25 which is also equal to 7:25 P.M.

8 0
3 years ago
Which of the following is equivalent to 25 7/2?
pickupchik [31]

Answer:

{25}^{ \frac{7}{2} }  =  \sqrt[2]{ {25}^{7} }  =  \sqrt{ {25}^{7} }  \\

4 0
3 years ago
Read 2 more answers
The art club had an election to select a president. 57 members voted in the election and 19 did not vote. What percentage of the
laila [671]

Answer:

75% voted

Step-by-step explanation:

you add the 75 to 19 to figure out the total amount of people in the club.

75+19=76

Then you divide the people who voted which is 57 by the total amount of people in the club which is 76

57/76=0.75

then you move the decimal two places to the left and you get 75%


5 0
3 years ago
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