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podryga [215]
2 years ago
7

Solve this equation: 4+k=11

Mathematics
1 answer:
Law Incorporation [45]2 years ago
3 0

Answer:

k=7

Step-by-step explanation:

4+k=11

subtract 4 from both sides to isolate k

k= 7

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Write the equation of the line in fully simplified slope-intercept form.
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Y=3/1x+-1 hope this is correct
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3 years ago
2[( 62 -52) + 4]<br> Need help
luda_lava [24]

Answer:

28

Step-by-step explanation: USE PEDMAS  

2[(62-52)+4] = 2[(10)+4]= 2[14]=28

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Wendy wants to show people how medicines that doctors use now would have been helpful during the Civil War
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7 0
2 years ago
A piggy bank contains a total of 84 coins in nickels and quarters worth $12.80.
Kitty [74]

Let's make a system of equations to solve for this:

n + q = 84

0.05n + 0.25q = 12.80

where n = nickels and q = quarters.

---

Solve for n in the first equation by subtracting q from both sides.

n = 84 - q

---

Plug n into the second equation.

0.05(84 - q) + 0.25q = 12.80

Distribute 0.05 inside the parentheses.

4.2 - 0.05q + 0.25q = 12.80

Combine like terms.

4.2 + 0.2q = 12.80

Subtract 4.2 from both sides.

0.2q = 8.6

Divide both sides by 0.2.

q = 43

---

Plug 43 for q in the first equation.

n + (43) = 84

Subtract 43 from both sides.

n = 41

---

There are 41 nickels and 43 quarters in the piggy bank. ✅

8 0
3 years ago
At the movie theatre, child admission is $5.80 and adult admission is $9.60. On Thursday, 167 tickets were sold for a total sale
saveliy_v [14]

Answer:

  93 adult tickets

Step-by-step explanation:

Let 'a' represent the number of adult tickets sold. Then total revenue was ...

  9.60a +5.80(167 -a) = 1322

  3.80a = 353.40 . . . . . . . . . . subtract 968.60, collect terms

  a = 93 . . . . . . . . . . divide by 3.8

93 adult tickets were sold that day.

__

74 child tickets were sold

8 0
2 years ago
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