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4 years ago

What type of association does the graph show between x and y?

Mathematics

1 answer:

Anni [7]4 years ago

3 0

The points are all over the place
No association

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Sophia's school took a field trip. a total of 21 vehicles were needed for the trip. some students took the bus, and some student

Liono4ka [1.6K]

Let x be the number of buses, and y the number of cars.
$\left \{ {{x+y=21} \atop {30x+4y=318}} \right.$
We can solve for y in the first equation to get:
$y=21-x$
Now we can replace 21-x in our second equation, and solve for x:
$30x+4(21-x)=318$
$30x+84-4x=318$
$26x=234$
$x= \frac{234}{26}$
$x=9$

We can conclude that 9 buses were needed for the trip.

4 0

4 years ago

Someone please help me answer this!!

Airida [17]

Answer:

c = 9.4m is the answer

Step-by-step explanation:

a (length of the telephone pole) = 9m

b (distance between the pigeon and the pole) = 3m

c = ?

According to the Pythagorean theorem,

a² + b² = c²

9² + 3² = c²

81 + 9 = c²

c² = 90

c = 9.4m

∴ the pigeon will fly 9.4m

8 0

3 years ago

HELP FIND THE SLOPE OFTHIS GRAPH

dybincka [34]

Answer:

-1.25

Step-by-step explanation:

Your points one the graph are (-4,4) and (0,-1)

Formula for slope is y1-y2/x1-x2

4--1/-4-0

5/-4

-1.25

7 0

4 years ago

Suppose that the local sales tax rate is 6.25% and you purchased a used car for $16,800. What is the car’s total cost?

Tanzania [10]

Total= Car Cost + (Car Cost * Tax %)

Total= $16,800 + ($16,800 * 6.25%)
convert % to decimal form; divide % by 100

Total= $16,800 + ($16,800 * 0.0625)
multiply inside parentheses

Total= $16,800 + $1,050

Total= $17,850

ANSWER: The total cost for the used car with tax is $17,850.

Hopd this helps! :)

7 0

4 years ago

Read 2 more answers

WHAT PERCENTAGE OF 513000 IS 488800?

Doss [256]

Answer:

The percentage of 513000 by 488800 is 2507544000

8 0

3 years ago

Read 2 more answers