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3 years ago

11

Help. pls. i will mark brainliest.

2 answers:

Gelneren [198K]3 years ago

5 0

Answer:

pretty sure its b.

hope this helps!

svlad2 [7]3 years ago

5 0

Answer:

i think its none of the above

Step-by-step explanation:

because it can't be vertical since they need to be on opposite sides

it's not complementary because it doesn't equal to 90

it can't be supplementary because line D is not straight

so that's why i think it's none of the above

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An office building loses a third of its heat between sundown and midnight and an additional half of the original amount of heat

Mekhanik [1.2K]

Answer:

$\dfrac{1}{16}$

Step-by-step explanation:

Proportion of Heat Loss Between sundown and midnight $=\dfrac{1}{3}$

Proportion of Heat Loss between midnight and 4 AM $=\dfrac{1}{2}$

Proportion of Total Heat Already Lost $=\dfrac{1}{3}+\dfrac{1}{2} =\dfrac{5}{6}$

Proportion of Remaining Heat $=1-\dfrac{5}{6}=\dfrac{1}{6}$

Between 4 AM and 5 AM, five-eighths of the remaining heat is lost.

Proportion of Heat Loss between 4 AM and 5 AM= $\dfrac{5}{8}$ X \dfrac{1}{6} = \dfrac{5}{48}$

Therefore, Proportion of Remaining Heat Left $=\dfrac{1}{6}- \dfrac{5}{48}=\dfrac{1}{16}$

We therefore say that:

$\dfrac{1}{16}$ of the total heat loss occurs between 5 AM and sunrise.$

6 0

3 years ago

Log10(x^2+1)=1 <br> .......

sesenic [268]

$2^{x} = 4 ----\ \textgreater \ x = log_{2}4

 x^{2} = 4 ----\ \textgreater \ x = \sqrt{4}$

5 0

3 years ago

(30 POINTS) Select the correct answer.

gulaghasi [49]

Im pretty sure the correct answer is a

6 0

3 years ago

Read 2 more answers

-2(b-5)=16 x when b is 3 is

Kitty [74]

Answer:

When B is 3, it is not answerable. The sides are not equal, if it were -3 the answer would be 16.

3 0

2 years ago

3x = 2x + 7<br> 4 5<br> x = ?

Alexxandr [17]

<h2>Solve for <em>x</em> | Solution and Explanation</h2>

_______________________________________________

We are given the following expression:

$\frac{3x}{4} =\frac{2x+7}{5}$

1. Apply fraction cross multiply (if $\frac{a}{b}=\frac{c}{d}$ , then $a$ × $d$ = $b$ × $c$ )

$3x$ × $5 = 4(2x+7)$

==================

2. Simplify.

$15x=4(2x+7)$

==================

3. Expand 4(2x + 7).

$15x=8x+28$

===========================

4. Subtract 8x from both sides.

$15x-8x=8x+28-8x$

=======================

5. Simplify.

$7x=28$

=======================

6. Divide both sides by 7.

$\frac{7x}{7}=\frac{28}{7}$

========================

7. Simplify.

$x=4$

=========================

Hope this helps!

6 0

1 year ago