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3 years ago

14

Hii please help i’ll give brainliest

1 answer:

pochemuha3 years ago

7 0

Answer:

for number 2 your answer will be 18

Step-by-step explanation:

Find the least common multiple of 6 and 9. For 6 the multiples will be 6, 12, 18, 24. For 9 the multiples will be 9, 18, 27, 36. You see that the numbers 18 and 36 are both common multiples of 6 and 9. The least common multiple is the smallest which is 18.

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A and B are two events. Which statement about the conditional probability is true?

nata0808 [166]

The answer
by using fundamental definition
<span>The conditional probability of event B given event A is P(B|A)=P(A and B)/P(A) when two events are not independent.
so the only true answer is A, because </span>P(B|A)=P(A) if A and B are independents<span>
(definition)</span>

4 0

3 years ago

Read 2 more answers

A rectangular box with a square base is to be constructed from material that costs $9 per ft2 for the bottom, $5 per ft2 for the

kramer

Answer:

$18.73ft^3$

Step-by-step explanation:

Let

Side of square base=x

Height of rectangular box=y

Area of square base=Area of top= $(side)^2=x^2$

Area of one side face= $l\times b=xy$

Cost of bottom=$9 per square ft

Cost of top=$5 square ft

Cost of sides=$4 per square ft

Total cost=$204

Volume of rectangular box= $V=lbh=x^2y$

Total cost= $9(x^2)+5x^2+4(4xy)=14x^2+16xy$

$204=14x^2+16xy$

$204-14x^2=16xy$

$y=\frac{204-14x^2}{16x}=\frac{102-7x^2}{8x}$

Substitute the values of y

$V(x)=x^2\times \frac{102-7x^2}{8x}=\frac{1}{8}(102x-7x^3)$

Differentiate w.r.t x

$V'(x)=\frac{1}{8}(102-21x^2)=0$

$V'(x)=0$

$\frac{1}{8}(102-21x^2)=0$

$102-21x^2=0$

$102=21x^2$

$x^2=\frac{102}{21}=4.85$

$x=\sqrt{4.85}=2.2$

It takes positive because side length cannot be negative.

Again differentiate w.r. t x

$V''(x)=\frac{1}{8}(-42x)$

Substitute the value

$V''(2.2)=-\frac{42}{8}(2.2)=-11.55$

Hence, the volume of box is maximum at x=2.2 ft

Substitute the value of x

$y=\frac{102-7(2.2)^2}{8(2.2)}=3.87 ft$

Greatest volume of box= $x^2y=(2.2)^2\times 3.87=18.73 ft^3$

5 0

3 years ago

PLEASE!!! HELP NEEDED!!!

andriy [413]

Answer:

(x, y) = (-1, 3), (-3, 115), (2, 0)

Step-by-step explanation:

The first two test points are <em>not roots</em>. The last one is a root.

4 0

3 years ago

What is 6m+ 5 - 3m=7 (m-1)<br> Please answer ASAP

ELEN [110]

Step-by-step explanation:

6m+5-3m=7(m-1)

3m+5=7m-1

5+1=7m-3m

6=4m

6/4=m

3/2=m

I think it is correct .

5 0

3 years ago

I don’t know what property to use

tiny-mole [99]

The AWSER is 12 I think

6 0

3 years ago