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ki77a [65]
3 years ago
6

20 points! Please answer will mark brainlest.

Mathematics
2 answers:
DanielleElmas [232]3 years ago
7 0

Answer:

30°

Step-by-step explanation:

3x + (90 - 2x) = 180 - 60

x + 90 = 120

x = 120 - 90

x = 30°

malfutka [58]3 years ago
5 0
30 degrees is the answer my love
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Michael has a total of$4.40 in dimes (1 dime=$0.10) and quarters (1quarter=$0.25), and he has 20 coins in total. Which of the fo
Vesnalui [34]
A) d+q=20
0.1d+0.25q=4.40 Let's just read what this says: first, # of dimes (d) plus # of quarters (q) is 20.The second equation can be called the VALUE EQUATION; it says that one tenth of a dollar ($0.10) times the # of dimes is part of the total monetary value, and that one quarter of a dollar ($0.25) times the # of 'quarter' coins is the other part of this stash, and it totals $4.40. VOTE FOR A.
5 0
3 years ago
Audrey made 3 water balloons for every 6 guests at the party. How many water
Triss [41]

Answer:

4 balloons

Step-by-step explanation:

3:6= 1:2

2*3= no. of guest, 1*3= no. of balloons

SO

2*4 (8)= number so guests, and 1*4 (4)= number of balloons

5 0
3 years ago
What is the solution of the system x − 3y = –13 and 5x + 7y = 34? A. `x = (6)/(5)`, y = 4 B. `x = (7)/(2), y = (9)/(2)` C. `x =
Masteriza [31]

For this case we have the following system of equations:

x-3y = -13\\5x + 7y = 34

From the first equation we clear "x":

x = -13 + 3y

We substitute in the second equation:

5 (-13 + 3y) + 7y = 34

We apply distributive property:

-65 + 15y + 7y = 34

We add similar terms:

-65 + 22y = 34

We add 65 to both sides:

22y = 34 + 65\\22y = 99

We divide between 22 on both sides:

y = \frac {99} {22}\\y = \frac {9} {2}

We look for the value of the variable "x":

x = -13 + 3 \frac {9} {2}\\x = -13 + \frac {27} {2}\\x = \frac {-26 + 27} {2}\\x = \frac {1} {2}

Thus, the solution of the system is:

(x, y): (\frac {1} {2}, \frac {9} {2})

ANswer:

(x, y): (\frac {1} {2}, \frac {9} {2})

5 0
3 years ago
Read 2 more answers
Which is equivalent to x(-14x + 9)?
victus00 [196]
SO YOU HAVE X(-14X+9). ALL YOU DO IS THE DISTRIBUTION PROPERY OR MULIPLE BY X

SO WE GET -14X^2+9X.

X(-14X+9)= -14X(*)X+9(*)X= -14X^2+9X

HOPE THIS HELPS
5 0
3 years ago
John is curious how much money he can make in a month. He makes one penny on March 1st. He hopes to double the amount he makes e
KonstantinChe [14]

Answer:

£10,737,418.24

Step-by-step explanation:

<u>Every day amount doubles:</u>

  • March 1st = 1p= 2^0 p
  • March 2nd = 2*1p = 2^1 p
  • March 3rd = 2*2p = 2^2 p
  • ...
  • March 31st = 2^30 p = 1,073,741,824 p = £10,737,418. 24
4 0
3 years ago
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