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sineoko [7]
3 years ago
7

I need help me need to match i am getting confuse.

Mathematics
1 answer:
gregori [183]3 years ago
7 0

Answer:

1 A= pi 21^2

2 C=pi 21

3 A= pi 10.5^2

4 C= 2pi 10.5

Step-by-step explanation:

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(15 POINTS!) The graph shows the distance a ghost crab can run over time the D equals the distance in meters and the t equal the
Maru [420]

Answer:

B. d = 5/3t

Step-by-step explanation:

The complete question is shown in the figure attached with.

We need to find the equation of direct variation using the graph. The general equation for a direction variation is:

y = kx

In this case, the variable along x axis is time in seconds i.e. "t" and the variable along y axis is distance in meters i.e. "d". So, the equation for this case would be:

d = kt

We need to find the value of "k" to complete this equation. For this we can use any point from the graph and substitute it in the above equation. From the graph we can see that the distance covered for time = 3 seconds is 5 meters. Substituting t =3 and d = 5 in above equation, we get:

5 = 3k

k = 5/3

Using the value of k in the above equation, we get:

d=\frac{5}{3}t

Therefore, option B gives the correct answer

7 0
3 years ago
A ladder leaning against a wall forms a triangle and exterior angles with the wall and the ground. What are the measures of the
Paha777 [63]
11x° is interior angle of ladder to the ground
and 7X° is interior angle of ladder to the wall

exterior angle of a ladder to wall is 180-7x
and exterior angle of a ladder to ground is 180-11x
7 0
3 years ago
Arlene had 1/3 as many goldfish as Isabelle. Isabelle has 5 times as many goldfish as Bruce. If Bruce had 18 goldfish, how many
kvv77 [185]

Answer: 30 goldfish

Step-by-step explanation: Bruce has 18 goldfish. If Isabelle has 5 times as many goldfish as Bruce she will have 18*5=90 goldfish. If Arlene has 1/3 times as many goldfish as Isabelle she will have 90/3=30 goldfish.

7 0
3 years ago
Find the equation of the line.<br> Use exact number .<br><br> Y =____x+____
Elanso [62]
Y= -1/3x+5
the y-intercept is 5 and the slope is -1/3
4 0
3 years ago
PLS HELP BRAINLIEST WILL BE GIVEN :D
disa [49]

Answer:

56

Step-by-step explanation:

By tracing the lines on the tree diagram, we see the probability of both being red is 0.5 × 0.6 = 0.3.

The probability of both being blue is 0.5 × 0.4 = 0.2.

So we would expect to get both blue 2/3 of the times we get both red.

X = 2/3 (84)

X = 56

6 0
3 years ago
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