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Marina CMI [18]

3 years ago

8

Lines x and y intersect to form adjacent angles 2 and 3. If m/_2 = 3a - 27 and m/_3 = 2b + 14, find the values of a and b so tha

t x is perpendicular to y.

1 answer:

7nadin3 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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Help please!!! Thxxx

Gnom [1K]

Answer:

F = 7: 16

Step-by-step explanation:

Equating 1 : x and 7:2

x = 2:7

Substituting x into the other equation we have

1: 16/7

Which is equal to 7: 16

5 0

4 years ago

A+a+3=a+13 solve the equation

mart [117]

A+a+3=a+13
2a+3=a+13
From here you want the variables on the same side, so you would subtract the a from a+13 and move it to 2a+3
2a+3=a+13
-a -a
a+3=13
Now you want the numbers on the same side
a+3=13
-3 -3
a=10

3 0

4 years ago

Polonium-210 is a radioactive substance with a half life of 138 days. If a nuclear facility is handling 265 grams of polonium-21

dlinn [17]

The half life is 138 days, meaning exactly half of the material will decay after this time. Use this information to find the decay factor $k$ :

$\dfrac12=e^{138k}\implies k=-\dfrac{\ln2}{138}$

Then after 250 days, there will be

$265e^{250k}\approx75.492$

grams left.

5 0

3 years ago

Read 2 more answers

2.1x10 to the -3 power x 2x10 to the second power

ad-work [718]

Answer:

$4.2*10^{-1}$

Step-by-step explanation:

We want to simplify:

$2.1*10^{-3}\times 2*10^2$

We rewrite to get:

$2.1*2*10^2*10^{-3}\times10^2$

We now apply the laws of indices

$4.2*10^{-3+2}$

We simplify to get $4.2*10^{-1}$

We leave our final answer is scientific form.

The final answer is therefore:

$4.2*10^{-1}$

5 0

3 years ago

Help please with this lol.

seraphim [82]

<h2>answer:</h2>

the value is $3.02

6 0

3 years ago

Read 2 more answers