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3 years ago

How do you illustrste inequalities on a number line

Mathematics

1 answer:

Delvig [45]3 years ago

3 0

Answer:

You can use a period or a circle (not colored in)

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will mark BRAINLIEST if you give a correct answer. Please don't forget about the proportion. Thank you!

olasank [31]

The second proportion is correct and it will be 6 hours.

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3 years ago

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Find the area of the triangle below??

Sladkaya [172]

Answer:

94.8

Step-by-step explanation:

94.8 is the answer for 1st q

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3 years ago

How do you turn 12/15 and 68/80 into a decimal and into a percent

Allisa [31]

$\frac{12}{15}\\\\divide\ a\ numerator\ and\ a\ denominator\ by\ 3\\\\12:3=4;\ 15:3=5\\\\therefore\ \frac{12}{15}=\frac{4}{5}\\\\multiply\ a\ numerator\ and\ a\ denominator\ by\ 2\\\\4\cdot\ 2=8;\ 5\cdot2=10\\\\therefore\ \frac{12}{15}=\frac{4}{5}=\frac{8}{10}=\boxed{0.8}\Rightarrow0.8\cdot100\%=\boxed{80\%}$

$\frac{68}{80}\\\\divide\ a\ numerator\ and\ a\ denominator\ by\ 4\\\\68:4=17;\ 80:4=20\\\\therefore\ \frac{68}{80}=\frac{17}{20}\\\\multiply\ a\ numerator\ and\ a\ denominator\ by\ 5\\\\17\cdot\ 5=85;\ 20\cdot5=100\\\\therefore\ \frac{68}{80}=\frac{17}{20}=\frac{85}{100}=\boxed{0.85}\Rightarrow0.85\cdot100\%=\boxed{85\%}$

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3 years ago

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Write 43 as a sum of powers of 2.<br> (2 Has to be the Base not the exponent)

slamgirl [31]

Answer:

2⁰ + 2¹+ 2⁵ +2³ = 43

Step-by-step explanation:

since 43 is odd, we know 2⁰ or 1 must be one of the sums

43 - 2⁰ = 42

42 - 2¹ = 40

16 = 2⁴

40-2(16) = 40 - 2⁵ = 8

8 = 2³

adding this all together

2⁰ + 2¹+ 2⁵ +2³ = 43

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3 years ago

Solve the quadratic equation.<br>-7n^2=-448<br>

Zolol [24]

Answer:

n = 8

Step-by-step explanation:

-7n² = -448

=> n² = -448 / -7

=> n² = 64

=> n = $\sqrt{64}$

=> n = 8

Hope it helps :)

Please mark my answer as the brainliest

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2 years ago