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4 years ago

PLEASE ANSWER IT CORRECT PLEASE!!!

Mathematics

1 answer:

Darina [25.2K]4 years ago

3 0

Answer:

11. y=1 1/3x-3

12. y-4=3(x-2)

Step-by-step explanation:

here ya go

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CAN ANYONE HELP ME WITH THIS QUESTION...Plzz

Lelechka [254]

Answer:

AO and OC

x+8 and 16-x

x+8 = 16-x

x+x= 16-8

2x= 8

x= 8/2

x=4

DO and OB

2y+13 and 5y+4

2y+13 = 5y+4

2y-5y= 4-13

-3y = -9

y= 9/3

y= 3

Step-by-step explanation:

i hope this helps

if this helps let me know

5 0

3 years ago

Read 2 more answers

What does the quotient rule of exponents say?

jenyasd209 [6]

It says that you need to divide 2 exponents with the same base, you keep the base and subtract the powers, its kind of like reducing fractions! :)

8 0

3 years ago

Element X decays radioactively with a half life of 12 minutes. If there are 160

Salsk061 [2.6K]

Answer:

It would take 75.8 minutes for the element to decay to 2 grams.

Step-by-step explanation:

The number of grams of element x, after t minutes, is given by the following equation:

$X(t) = X(0)(1-r)^{t}$

In which X(0) is the initial amount and r is the decay rate.

There are 160 grams of Element X

This means that X(0) = 160.

$X(t) = X(0)(1-r)^{t}$

$X(t) = 160(1-r)^{t}$

Half life of 12 minutes.

This means that X(12) = 0.5*X(0) = 0.5*160 = 80. So

$X(t) = 160(1-r)^{t}$

$80 = 160(1-r)^{12}$

$(1 - r)^{12} = 0.5$

$\sqrt[12]{(1 - r)^{12}} = \sqrt[12]{0.5}$

$1 - r = 0.9438$

$X(t) = 160(1-r)^{t}$

$X(t) = 160(0.9438)^{t}$

How long would it take for the element to decay to 2 grams?

This is t for which X(t) = 2. So

$X(t) = 160(0.9438)^{t}$

$2 = 160(0.9438)^{t}$

$(0.9438)^{t} = \frac{2}{160}$

$\log{(0.9438)^{t}} = \log{\frac{2}{160}}$

$t\log{0.9438} = \log{\frac{2}{160}}$

$t = \frac{\log{\frac{2}{160}}}{\log{0.9438}}$

$t = 75.8$

It would take 75.8 minutes for the element to decay to 2 grams.

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3 years ago

Of the 320 students in 8th grade, 3/8 have a pet. How many students in 8th grade have a pet?

Zepler [3.9K]

12 please help answer my question which is why is the uks biome like it is?

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3 years ago

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-78 IS GREATER THAN OR EQUAL TO - 8 +5n

Leto [7]

Answer:

$n\le -14.$

Step-by-step explanation:

The statement "-78 IS GREATER THAN OR EQUAL TO - 8 +5n" mathematically can be written as

$-78\ge -8+5n.$

Add 8:

$-78+8\ge -8+8+5n,\\ \\-70\ge 5n.$

Divide by 5:

$-\dfrac{70}{5}\ge n,\\ \\-14\ge n$

$n\le -14.$

4 0

3 years ago