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tigry1 [53]
3 years ago
14

PLEASE HELP! ASAP! Thanks! In the system -9x-10y=17 and -10x-10y=10. What is the value of 2x?

Mathematics
1 answer:
Arisa [49]3 years ago
3 0

Answer:

2x=14

Step-by-step explanation:

multiply the second equation by -1 and then when you add, the y's cancel out when you add and you are left with 1x=7. so multiply it by 2 and you get 14

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Please help me prove this theorem thing. I'll give yuh mind kisses <3 have a good day luvlies
lesantik [10]

Answer:

∠ 1 = 20 x + 5

∠ 2 = 24 x - 1

If lines l and m are parallel:

∠ 1 + ∠ 2 = 180°

20 x + 5 + 24 x - 1 = 180

44 x + 4 = 180

44 x = 180 - 4

44 x = 176

x = 176 : 44

x = 4°

Your welcome again :)

Step-by-step explanation:

6 0
3 years ago
The weather during the day was 5°C. The temperature dropped 8° at night. What was the nighttime temperature? ​
blondinia [14]

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Step-by-step explanation:

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8 0
3 years ago
And right triangle sin (40 - x)° equals cos(3x)° degrees what is the value of x.
Drupady [299]

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let's solve ~

\qquad \sf  \dashrightarrow \: \sin(40 - x)  =  \cos(3x)

\qquad \sf  \dashrightarrow \:  \cos\{90   -   (40 - x ) \}  =  \cos(3x)

\qquad \sf  \dashrightarrow \:90 - (40 - x) = 3x

\qquad \sf  \dashrightarrow \:90 - 40 + x = 3x

\qquad \sf  \dashrightarrow \:3x - x = 50

\qquad \sf  \dashrightarrow \:2x = 50

\qquad \sf  \dashrightarrow \:x = 25 \degree

3 0
2 years ago
To make his famous chocolate cake, a baker uses chocolate that is 75% cocoa.
Masja [62]

The baker needs to use 100/3 pounds of 90% chocolate to make the cake.

<h3>Equation </h3>

An equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the amount of 90% chocolate. Using equation:

100 * 70% + x * 90% = (x + 100) * 75%

100 * 0.7 + 0.9 * x = (x + 100) * 0.75

70 + 0.9x = 0.75x + 75

x = 100/3

The baker needs to use 100/3 pounds of 90% chocolate to make the cake.

Find out more on Equation  at: brainly.com/question/22688504

8 0
3 years ago
What is AC Brainliest for answer
77julia77 [94]

Answer:

The legnth of AC is about 6.364

Explanation:

4 0
3 years ago
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