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Vsevolod [243]
3 years ago
9

Write a rule for the function please!!!

Mathematics
1 answer:
lys-0071 [83]3 years ago
6 0
Function rule is the relationship between input and output values. To find the function rule we have to observe the given data carefully that how input and output values are related to each other.
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Two high schools are going on a field trip. One rents 8 vans and 9 buses for 228 students. The other rents 4 vans and 5 buses fo
nevsk [136]

Answer:

No. pp you can fit in a van: 6,

No. pp you can fit in a bus: 20

Step-by-step explanation:

Let v = # of pp in vans, and let b = # of pp in buses:

8v + 9b = 228,

4v + 5b = 124

If we solve this system of equations by substitution, we isolate the first eq. for v and then substitute into the bottom eq:

v = 228-9b/8,

Substitute v = 228-9b/8 into bottom eq:

[4 * 228-9b/8 + 5b = 125]

[228+b/2=124]

[228+b = 248]

[b = 20]

Now substitute 20 to find no. of pp in the vans:

v = 228 - 9(20)/8 = 228  - 180/8 = 48/8 = 6

8 0
2 years ago
The price of a sandwich decreases from $8 to $6. What is the percentage decrease in the price of the sandwich?
bazaltina [42]

Answer:

It decreased by 25%

Step-by-step explanation:

8 x .25=2

8 - 2 = 6

5 0
2 years ago
What ratios are equivalent to each other.
zysi [14]

Answer:

b and d/ a and c

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
There are only red buttons, yellow buttons and orange buttons in a jar.
Vilka [71]
Orange is 9.
so 9/(7+4+9 ) times 100.
the answer is 45%
8 0
2 years ago
If f(x)=5x-7 what is f(3)
Anarel [89]

Answer:

f(3) = 8

Step-by-step explanation:

f(x) = 5x - 7

Put x as 3 and evaluate.

f(3) = 5(3) - 7

f(3) = 15 - 7

f(3) = 8

7 0
2 years ago
Read 2 more answers
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