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astraxan [27]
3 years ago
11

Which of the following describes all the solutions to the inequality 5x+7y=22 when y=-4

Mathematics
1 answer:
Kryger [21]3 years ago
4 0
Substitute...
5x + 7(-4) = 22
5x - 28 = 22
+ 28 + 28
5x = 50
__ ___
5 5

x = 10
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Suppose you have a pocketful of change. You have some pennies (p) and some quarters (q). One expression could be used to describ
faltersainse [42]

Answer:

13

1.57

Step-by-step explanation:

So we have two equations regarding the number of quarters <em>q</em> and the number of pennies <em>p:</em>

<em />p+q<em />

Which represents the total amount of coins and

0.01p+0.25q

Which represents the total amount of money in dollars.

So we are asked to evaluation each expression for the situation in which we have 6 quarters and 7 pennies. Thus, plug 6 in for <em>q</em> and 7 in for <em>p:</em>

<em />p+q\\(7)+(6)=13<em />

This tells us that we have 16 coins in total.

0.01(7)+0.25(6)\\=0.07+1.50\\=1.57

This tells us that we have a total amount of $1.57.

5 0
3 years ago
Read 2 more answers
When Theresa walks at a pace of 88 steps per minute, it takes her 90 minutes to walk the trail. If she alters her pace to 33 ste
jarptica [38.1K]

Answer: 33 minutes

Step-by-step explanation:

Hi to answer this question we have to write a proportion

Speed rate = 88 step per minute

Time = 90 minutes

So, the proportion is 88 step/min / 90 minutes

For 33 steps per minutes = 33 / x minutes

88/90 = 33/x

solving for x:

x= 33/ (88/90)

x = 33.75 = 33 minutes.

Feel free to ask for more if needed or if you did not understand something.

5 0
3 years ago
A flag measures 90<br> feet by 60 feet. What is the perimeter of<br> this flag?
Temka [501]
300 feet you add 90 twice which gets you 180 and then add 60 twice which gets you 120 and 120 plus 180 is 300
4 0
3 years ago
How do u write the problem
mr Goodwill [35]
I don’t know ‍♀️ I am very sorry
4 0
3 years ago
I rlly suck at math so plz help lol
Jlenok [28]

Answer:

A. 81

Step-by-step explanation:

Combine fractions, that equals 2/5 in your exponent. Three to the 2/5 power is 81. So answer A.

6 0
3 years ago
Read 2 more answers
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