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Ksju [112]
2 years ago
5

Solve the system: X + 2y=28 Y= 3x

Mathematics
1 answer:
DochEvi [55]2 years ago
7 0

Answer:

x=4 and y=12

Step-by-step explanation:

x+2(3x)=28

x+6x=28

7x=28

x=4

y=3(4)

y=12

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4. Jennifer is planning a holiday. The hotel costs $60 per night and her flights cost $150. She has a budget of
tino4ka555 [31]

Answer:

she can afford about 5 nights.

Step-by-step explanation:

im not 100% sure on this answer, but i believe it's the answer

8 0
3 years ago
Read 2 more answers
What are the next three terms 4, 7/4,-1/2,-11/4...
Molodets [167]

Answer:

{-29/4, -19/2, -47/4}

Step-by-step explanation:

Note that this is a decreasing arith. seq.  Each term is smaller than the previous term, the result of the subtraction of 2 1/4 (equivalent to 9/4).  

The fourth term is -11/4; subtracting 9/4 results in -20/4, or -5.

The fifth term is -20/4; subtracting 9/4 results in -29/4.

The 6th term is -29/4; subtracting 9/4 results in -38/4, or -19/2.

The 7th term is -38/4; subtracting 9/4 results in -47/4.

Thus, the "next three terms" following the first four terms are {-29/4, -19/2, -47/4}

5 0
3 years ago
If you had $300 to convert to euros, would you get more than 300 euros?
Marrrta [24]

Answer:

Yes you would have more than $300 to convert to Euros.

Step-by-step explanation:

If you have $300 in america, and u convert them to euros you will have $275.43

i got this because i looked it up google :)

3 0
3 years ago
If the sum of three consecutive integers is 36, what is the smallest of these integers?
DedPeter [7]
Let the three consecutive equals:
x, x+1, x+2

sum:
x+(x+1)+(x+2) = 36
3x + 3 = 36
x+1 = 36/3
x+1 = 12
x=12-1
x=11
5 0
3 years ago
Which function is the inverse of f(x)= 3x+5 over 7
Pani-rosa [81]

f(x) = (3x+5)/7

Step 1:

we write f(x) as y

y=(3x+5)/7

Step 2:

switch y by x and x by y

x=(3y+5)/7

Step 3:

solve for y,

x=(3y+5)/7

multiply both sides by 7

7x=3y+5

subtract 5 from left side

3y=7x-5

divide both sides by 3

y= (7x-5)/3

f⁻¹ (x) =(7x-5)/3

8 0
3 years ago
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