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Maru [420]
2 years ago
8

Draw three circles with centre 0 and the radii of 3cm, 5cm and 7cm respectively ​

Mathematics
1 answer:
MrMuchimi2 years ago
4 0
Ummm 48 cm ima be honest I need some points my fault
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A giant tortoise can travel 0.11 miles in 1 hour. At this rate, how long would it take the tortoise to travel 3 miles?
lakkis [162]

Answer:

about 27.27 hours.

Step-by-step explanation:

If it can travel 0.11 miles in 1 hour, we need to divide 3 miles by 0.11 miles to get the number of hours it would take to travel 3 miles. 3/0.11 is 27.27 repeating.

Hope this helps!

4 0
2 years ago
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Please help this is including substitution and system of equations.
Darina [25.2K]

Answer: I gotcha

Step-by-step explanation:

B, C, C, D, B

I just helped my brother with this

6 0
3 years ago
Write a quadratic function with zeroes 0 and 8.
Jlenok [28]

Answer:

x^2-8x=0

Step-by-step explanation:

the quadratic function should be as follows:

x^2-8x=0

Now let's confirm that the zeros of the function are 0 and 8

x^2-8x=0=x(x-8)=0

Therefore we can see that if x = 0

0^2*8*0=0\\0=0

the equation is fulfilled

And we also have (x-8)

for this expresion to be equal to zero:

x-8=0\\x=8

thus, if x = 8

8^2-8*8=0\\64-64=0\\0=0

the equation is also fulfilled

The zeros of the quadratic function x^2-8x=0 are 0 and 8.

3 0
3 years ago
Please help me thanks.
daser333 [38]

y=(-2x)+5

Step-by-step explanation:

4 0
2 years ago
A test to determine whether a certain antibody is present is 99.1​% effective. This means that the test will accurately come bac
avanturin [10]

Answer:

The probability that all the six people will test negative for the antibody is 0.9472.

The probability that the test comes back positive for at least one of the six ​people is 0.0528

Step-by-step explanation:

Consider the provided information.

probability that antibody is present will be effective is 99.1​% and not present​ is 99.1​% of the time.

Part (A)What is the probability that the test comes back negative for all six ​people? ​

Let P(X)= P(Antibody not present)

We want test comes back negative for all six that means antibody is present for all six. Thus X=0

P(X=0)=0.991\times0.991\times0.991\times0.991\times0.991\times0.991\\P(X=0)=0.9472

The probability that all the six people will test negative for the antibody is 0.9472.

Part (B) What is the probability that the test comes back positive for at least one of the six ​people?

P(X \geq1)=1-P(X=0)

P(X \geq1) = 1-0.9472

P(X \geq1) = 0.0528

Hence, the probability that the test comes back positive for at least one of the six ​people is 0.0528

7 0
3 years ago
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