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3 years ago

Will mark brainliest pls :) do not scam :(

Mathematics

1 answer:

xenn [34]3 years ago

8 0

Answer:

I think -$111.21 soB i am really bad at math

Step-by-step explanation:

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Use the distributive property to remove the parentheses -3(9x-8y)

mojhsa [17]

-24x + 24y is the answer simplified hope this helps

6 0

2 years ago

Read 2 more answers

Where do the brackets go?

Firdavs [7]

(5+8)x(6-2)+5 The brackets go there because of the way the numbers are placed. (I added words because without them I could not post this answer.)

5 0

3 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

Callie spins the spinner and rolls the number cube. What is the probability that she spins a five and rolls a six.The spinner ha

almond37 [142]

Answer:

1/48

Step-by-step explanation:

This is a case of joint probability, and the desired result is the product of P(spins a 5) and P(rolls a 6): (1/8)(1/6) = 1/48.

3 0

3 years ago

Solve the following using distributive property:327×105

Aliun [14]

Distributive Property:

The distributive property tells us how to solve expressions in the form of a(b + c).

$a(b+c) =a*b +a*c$

In this question we have to find two numbers that add up to give 105,

$105 =100+5$

Now replacing 105 by 100 + 5, rewriting the expression as :

$327 *105 = 327 (100+5)$

distributing 327 over 100 and 5

here a=327, b =100 and c=5

$327 (100+5) = 327*100 +327 *5$

$= 32700 + 1635$

Answer:

$327*105 = 34335$

4 0

3 years ago