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Vanyuwa [196]
2 years ago
10

Based on this graph, is the relationship between number of rows and number of chairs a proportional relationship?

Mathematics
1 answer:
const2013 [10]2 years ago
4 0

Answer:

Yes

Step-by-step explanation:

As the number of rows increases the number of chairs also increases according to the graph

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What if I replace-x with -3?<br> Y= -x +6
Sunny_sXe [5.5K]

Answer:

y=9

Step-by-step explanation:

replace the x only with -3

you get y = - -3 + 6

Two negatives= positive

+3+6=9

y=9

8 0
3 years ago
Read 2 more answers
A colour palette at a paint store has 6 shades of blue. Kelsie is choosing 2 shades of blue to paint her room. How many pairs of
Law Incorporation [45]

Answer:

B.) 15

Step-by-step explanation:

The order in which the shades are chosen is not important. For example, choosing powder then sky is the same outcome as choosing sky then powder. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

2 shades from a set of 6. So

C_{6,2} = \frac{6!}{2!(6-2)!} = 15

So the correct answer is:

B.) 15

8 0
4 years ago
Find are of shaded region?
castortr0y [4]
Ignoring the triangle first off, it is just a parallelogram. We can find the area with:
A_{P}=b*h=23.8 * 15=357 square ft. (see first diagram).

Next, we need to find the area of the triangle. Its a right angle triangle, so the area can be found by:
A_{T} = \frac{1}{2} wl
where w and l are the lengths of the two smaller sides. We have one, and the longer side (hypotenuse) so we can use Pythagoras' Theorem to find the other small side (see second diagram).
b= \sqrt{ a^{2} - c^{2} } =\sqrt{ 23.8^{2} - 21^{2} }=11.2ft.
Then find the area:
A_{T} =0.5*21*11.2=117.6 square ft.

Take the area of the triangle away from the area of the paralellogram:
357-117.6=239.4 ft^{2}

7 0
3 years ago
What is the area in square meters of the trapezoid below​
Rina8888 [55]

Given:

Bases of the trapezoid are 5.2 m and 14.6 m.

The height of the trapezoid is 7 m.

To find:

The area of the trapezoid.

Solution:

The area of a trapezoid is:

A=\dfrac{a+b}{2}\times h

Where, a,b are bases and h is the height of the trapezoid.

Putting a=5.2,b=14.6,h=7 in the above formula, we get

A=\dfrac{5.2+14.6}{2}\times 7

A=\dfrac{19.8}{2}\times 7

A=9.9\times 7

A=69.3

Therefore, the area of the trapezoid is 69.3 square meters.

3 0
3 years ago
In half an hour josh ran 3/4 a mile. how many miles would Josh run in 1 hour?​
nydimaria [60]

Answer:

1 1/2

Step-by-step explanation:

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6 0
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