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3 years ago

Please Help! I'm Stuck!

Mathematics

2 answers:

dem82 [27]3 years ago

7 0

Answer:

The area of P is 9 times the area of Q

Step-by-step explanation:

From P to Q

The side lengths are

6 : 2

Divide each side by 2

3:1

From length to area we square the scale factor

3^2 : 1^2

9 : 1

P to Q area is 9 to 1

The area of P is 9 times the area of Q

irinina [24]3 years ago

4 0

I think the answer to this problem is b.

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Simplify using the vertical method. (3k + 4)(3k^2 – 5k – 3)

liubo4ka [24]

Answer:

$9k^{3} -3k^{2}-29k-12$

Step-by-step explanation:

Step 1: Expand by distributing sum groups.

$3k(3k^{2} -5k-3)+4(3k^{2} -5k-3)$

Step 2: Expand by distributing terms.

$9k^{3} -15k^{2} -9k+4(3k^{2} -5k-3)$

Step 3: Expand by distributing terms.

$9k^{3}-15k^{2} -9k+12k^{2} -20k-12$

Step 4: Collect like terms.

$9k^{3}+(-15k^{2} +12k^{2} )+(-9k-20k)-12$

Step 5: Simplify.

$9k^{3} -3k^{2}-29k-12$

3 0

3 years ago

Suppose the half-life of a material is 10 days. You have one 1 kg of the material today. How much of the material would you have

boyakko [2]

Answer:

0.50 kg of the material would be left after 10 days.

0.25 kg of the material would be left after 20 days.

Step-by-step explanation:

We have been given that the half-life of a material is 10 days. You have one 1 kg of the material today. We are asked to find the amount of material left after 10 days and 20 days, respectively.

We will use half life formula.

$A=a\cdot(\frac{1}{2})^{\frac{t}{h}}$ , where,

A = Amount left after t units of time,

a = Initial amount,

t = Time,

h = Half-life.

$A=1\text{ kg}\cdot(\frac{1}{2})^{\frac{10}{10}}$

$A=1\text{ kg}\cdot(\frac{1}{2})^{1}$

$A=1\text{ kg}\cdot\frac{1}{2}$

$A=0.5\text{ kg}$

Therefore, amount of the material left after 10 days would be 0.5 kg.

$A=1\text{ kg}\cdot(\frac{1}{2})^{\frac{20}{10}}$

$A=1\text{ kg}\cdot(\frac{1}{2})^{2}$

$A=1\text{ kg}\cdot\frac{1^2}{2^2}$

$A=1\text{ kg}\cdot\frac{1}{4}$

$A=0.25\text{ kg}$

Therefore, amount of the material left after 20 days would be 0.25 kg.

6 0

3 years ago

The average person has about 100,000 hairs on their head. However, people with red hair

nirvana33 [79]

Answer:

90,000

Step-by-step explanation:

................

5 0

2 years ago

Help please asap will mark brainliest!

Andrew [12]

Answer:

VW = 7

Step-by-step explanation:

Because it is a parallelogram, UX = VW

x-4 = 2x - 15

11 = x

VW = 2 x 11 - 15

VW = 7

6 0

2 years ago

Read 2 more answers

HELP ASAP!! A truck starts from a warehouse, which is 8 miles south and 3 miles west of the town center. The truck travels 3 mil

butalik [34]

The answer, I think, is (1, -5);(4,3).

6 0

2 years ago