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Blababa [14]
3 years ago
5

Choose all the equations for which x=3 is a solution

Mathematics
2 answers:
gregori [183]3 years ago
8 0

A and D

A= 3+1=4

D=4*3=12

sashaice [31]3 years ago
3 0
A I think sorry if I'm wrong have a nice day
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PLEASEE HELP WILL GIVE BRAINLEST 20 POINTS
Ket [755]
<h3>Answer:</h3>

For each birdhouse built, the total cost increases by $3.50.

<h3>Step-by-step explanation:</h3>

Let's try some of the answers and see if they work.

The "initial cost" will be the cost when 0 birdhouses are built.

... f(0) = 3.5·0 +24 = 24 . . . . . clearly, not $3.50

Then increasing the number of birdhouses by 1, the cost is ...

... f(1) = 3.5·1 +24 = 27.5 . . . . . the cost has gone up (not down) by $3.50

Clearly the total cost to build 1 birdhouse is not $3.50. (It is $27.50.)

___

Our exploration of the formula leads us to conclude ...

... For each birdhouse built, the total cost increases by $3.50.

5 0
3 years ago
ky has 3 times more books than grant and grant has 6 fewer books than Jaime if the total combined number of books is 176 how man
sergiy2304 [10]
Number of books each of them have:

Jaime: x
Grant: x - 6
Ky: 3 (x - 6)

There are 176 books in total, so we can write it down as:

176 = x + x - 6 + 3 (x - 6)
176 = x + x - 6 + 3 * x + 3 * (-6)
176 = x + x - 6 + 3x - 18
176 = 2x - 6 + 3x - 18
176 = 5x - 24                        / + 24 (both sides)
5x = 200                              / ÷ 5 (both sides)
x = 40

Doublecheck:

Jamie: 40
Grant: 40 - 6 = 34
Ky: 3 (40 - 6) = 3 * 34 = 102

102 + 34 + 40 = 176, so it's correct :)
5 0
3 years ago
Read 2 more answers
A dance club hires two different DJ’s to
zubka84 [21]

Answer:

The expression is 100x + 50y ≤ 800.

Step-by-step explanation:

The hip hop DJ charge for $100 per hour. Let x be number of hours of hip hop :

hip \: hop = 100 \times x

hip \: hop = 100x

For rap DJ, the charge is $50 per hour. Let y be the number of hours of rap :

rap =  50 \times y

rap = 50y

Given that both DJs spend a maximum of $800. So the final expression is :

100x + 50y \leqslant 800

5 0
3 years ago
Help to solve -7 - 3a = 1 - 4a
Evgesh-ka [11]

Answer:

-7 - 3a = 1 – 4a  

Step one: Add 4a to -3a  

 

-7 + a = 1  

 

Step two: Add 7 to 1  

 

A = 8  

 

You're done! A=8 for this problem!  

 

 

Hopefully this helps! Feel free to mark brainliest!  

6 0
3 years ago
Read 2 more answers
Linear pair angles are: Always congruent Sometimes congruent or Never congruent​
Grace [21]

Answer:

Always

Step-by-step explanation:

3 0
3 years ago
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