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3 years ago

If A ⊂ B, then A ∩ B = ∅.True or False

Mathematics

1 answer:

viktelen [127]3 years ago

4 0

True I believe my friend.

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Evaluate the expression:<br> 9 +7(5-2)<br> Using PEDMAS<br><br> yall i suck at math

ANEK [815]

Hello! :)

Let's use PEMDAS.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

(5-2) = 3 Do parenthesis.

7 × 3 = 21 Multiply with what we got after doing the parenthesis.

9 + 21 = 30 Add with what we had left.

Hope this helps!

ELITEDIPER

5 0

3 years ago

Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease

Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

$\frac{2}{3}$

Now,

First year =570000

Second year is given by

$570000\times (\frac{1}{3})$

Third year is given by

$570000(\frac{1}{3})^2$

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

$570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6$

a=570000

common ratio is given by

$r=\frac{a_2}{a_1}=\frac{1}{3}$

number of terms = 6

Sum of terms will be given by

$S_n=\frac{a(1-r^n)}{(1-r)}$

We'll put this value in this formula,

$S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16$

So, there are approximately 853827 new cases in 6 years.

6 0

3 years ago

Jesse practices the trumpet for a total of 165 minutes during the first week of school. He practices for 245 minutes during the

JulsSmile [24]

So u can make shur your Awser is resinuble

8 0

3 years ago

F(X) = -X +2:Find f(X- 4)

cricket20 [7]

F(x) = -x+2
F(x-4) = ?

-(x+4)+2 = -x-4+2 = -x-2.

Hope this helps!

7 0

3 years ago

A. Complete the table to chart his calorie expenditure for different amounts of time.

Thepotemich [5.8K]

Answer:

Hi there i dont like math

5 0

2 years ago