2 years ago

How do i answer this question?

Mathematics

1 answer:

igomit [66]2 years ago

8 0

Answer:

its a=bh

Step-by-step explanation:

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At the third-grade party, two groups each had their own pizza. The blue group ate 7/8 of a pizza. The green group ate 2/8 of a p

Sav [38]

The blue group did because they ate 7 slices out of 8 while the green team only ate 2 out of 8

4 0

2 years ago

The radioactive element americium-241 has a half-life of 432 years. How many years will it take a 10 gram mass of americium-241

geniusboy [140]

<h2>Answer: 816 years</h2>

This problem can be solved using the <u>Radioactive Half Life Formula: </u>

<u />

$A=A_{o}.2^{\frac{-t}{h}}$ (1)

Where:

$A=2.7g$ is the final amount of the material

$A_{o}=10g$ is the initial amount of the material

$t$ is the time elapsed (the quantity we are asked to find)

$h=432y$ is the half life of americium-241

Knowing this, let's find $t$ from (1):

$2.7g=(10g).2^{\frac{-t}{432y}}$

$\frac{2.7g}{10g}=2^{\frac{-t}{432y}}$

$0.27g=2^{\frac{-t}{432y}}$

Applying natural logarithm in both sides:

$ln(0.27g)=ln(2^{\frac{-t}{432y}})$

$-1.309=-\frac{t}{432y}ln(2)$

$-t=\frac{(-1.309)(432y)}{0.693}$

<u></u>

<u>Finally:</u>

$t=816y$

3 0

3 years ago

PLEASE HELP ME OUT HERE!!!!<br> THIS IS DUE TODAY!!!!!

dolphi86 [110]

Answer:

I'm pretty sure the answer is b

5 0

2 years ago

Read 2 more answers

The blueprint of a pool has a scale of 2 inches equals 7 feet. The scale drawing is shown below. the length is 20 and the width

AlladinOne [14]

Answer:

Part A:

Blueprint 10 inches ⇒ Actual 35 feet

Blueprint 20 inches ⇒ Actual 70 feet

Part B:

The cost of the cover is $857.5

Step-by-step explanation:

Part A:

∵ The drawing scale is 2 inches for 7 feet

∵ The length = 20 inches and the width = 10 inches

∴ The actual length = (20 × 7) ÷ 2 = 70 feet

∴ The actual width = (10 × 7) ÷ 2 = 35 feet

Part B:

∵ The cost per square foot = $0.35

∵ The area of the pool = 70 × 35 = 2450 feet ²

∴ The cost of the cover = 2450 × 0.35 = $857.5

8 0

2 years ago

Using the 45°-45°-90° triangle theorem, find the value of h, the height of the wall. 6. 5 ft 6. 5 StartRoot 2 EndRoot ft 13 ft 1

navik [9.2K]

35 es mucho así que será 27 i think is 18

4 0

2 years ago

How do i answer this question?​

How do i answer this question?