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2 years ago

(3 1/2) (-1 5/7) PLEASE HELP!! SOMEONE PLEASEEEE!!

Mathematics

2 answers:

katen-ka-za [31]2 years ago

8 0

Answer:

-6

Step-by-step explanation:

Use a calculator

Bingel [31]2 years ago

5 0

the answer is -6

please mark brainlest

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List the following fractions from least to greatest.

sleet_krkn [62]

<h3>Answer: Choice A) 1/7, 3/7, 4/7, 6/7</h3>

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

Explanation:

All of the fractions, for each of the answer choices, has a denominator of 7. This means we can ignore them when it comes to sorting out the fractions. Focus only on the numerators.

Choice A has numerators 1,3,4,6 in that order from left to right. This is in increasing order (ie smallest to largest), so this is why choice A is the answer.
Choice B has the numerators 6,4,3,1 in that order. This is from largest to smallest, which is the complete opposite of what we want. Choice B is incorrect.
Choice C has numerators 1,6,4,3 which is in neither order. Rule this out as well.
Choice D has numerators 3,4,1,6 and we can rule it out for similar reasoning as choice C.

If you want, you can convert each fraction to decimal form to sort out the decimals that way, then convert back to fraction form.

4 0

3 years ago

Phone company a sells 1200 minutes for 132$ epr month and phome company b sells 2000 minutes for 260$ per month.which company is

Snowcat [4.5K]

Company A is cheaper by
Company A costs $0.11 per minute.
Company B costs $0.13 per minute.

To find out how much a company charges per minute, for example, company A, take $132 and divide it by 1200, which gives you $0.11.

7 0

2 years ago

To find the surface area of the figure shown, Mia found the surface area of the two triangular prisms and the rectangular prism.

AleksAgata [21]

Answer:

Mia needs to subtract another 6 square feet

Step-by-step explanation:

Guessed it and got it right

5 0

3 years ago

Read 2 more answers

Work out<br><br> 1/3 + 2/9<br><br> Give your answer in its simplest form

Soloha48 [4]

Step-by-step explanation:

1/3 + 2/9 = 3/9 + 2/9 = 5/9

Topic: Fractions

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

4 0

2 years ago

Read 2 more answers

a spherical balloon is deflated at a rate of 256pi/3 cm^3/sec. at what rate is the radius of the balloon changing when the radiu

Hunter-Best [27]

What you need to look for is $\frac { dr }{ dt }$ when r=8.

Now:

$Volume\quad of\quad a\quad sphere:\\ \\ V=\frac { 4 }{ 3 } \pi { r }^{ 3 }$

$\therefore \quad \frac { dV }{ dr } =\frac { 4 }{ 3 } \pi \cdot 3{ r }^{ 2 }=4\pi { r }^{ 2 }\\ \\ \therefore \quad \frac { dr }{ dV } =\frac { 1 }{ \frac { dV }{ dr } } =\frac { 1 }{ 4\pi { r }^{ 2 } }$

$And:\\ \\ \frac { dV }{ dt } =-\frac { 256\pi }{ 3 } \\ \\ Therefore:\\ \\ \frac { dr }{ dt } =\frac { dr }{ dV } \cdot \frac { dV }{ dt }$

$\\ \\ =\frac { 1 }{ 4\pi { r }^{ 2 } } \cdot -\frac { 256\pi }{ 3 } \\ \\ =-\frac { 256 }{ 12 } \cdot \frac { \pi }{ \pi } \cdot \frac { 1 }{ { r }^{ 2 } }$

$\\ \\ =-\frac { 64 }{ 3{ r }^{ 2 } } \\ \\ When\quad r=8,\\ \\ \frac { dr }{ dt } =-\frac { 64 }{ 3\cdot { 8 }^{ 2 } } =-\frac { 1 }{ 3 } \\ \\ Answer:\quad -\frac { 1 }{ 3 } \quad cm/sec$

3 0

3 years ago