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3 years ago

Solve the equation 4y + 12 = 0.2 (20 + 60y)

Mathematics

2 answers:

Rudik [331]3 years ago

8 0

Answer:

y=1

Step-by-step explanation:

Diano4ka-milaya [45]3 years ago

4 0

Answer:

y=1

Step-by-step explanation:

You can use PEMDAS. The parenthesis go first so you get (4+12y), You then combine like terms and you'll get 12-4=12y-4y. The answer is 8=8y, so y =1. I would appreciate it if you can mark my response the brainliest if you can, thank you very much! :D

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What is 55 1/5 - 32 3/4

garik1379 [7]

Answer:

449/20 or 22 9/20

Step-by-step explanation:

Change them to mixed numbers.

55 x 5 = 275 + 1 = 276

32 x 4 = 128 + 3 = 131

Then, convert them to a common denominator.

276 x 4 = 1104

131 x 5 = 655

1104 - 655 = 449

449/20

4 0

3 years ago

Use the formula to solve the problem. Round to the nearest hundredth.

Zepler [3.9K]

Answer:

Volume of sphere = 4.186 cubic inches

Step-by-step explanation:

Radius of sphere = r = 1 inch

Volume of sphere = ?

The formula used is: $Volume\:of\:sphere=\frac{4}{3}\pi r^3$

Putting value of radius and π and finding volume:

$Volume\:of\:sphere=\frac{4}{3}\pi r^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=4.186 \:cubic\:in$

So, Volume of sphere = 4.186 cubic inches

7 0

3 years ago

What is the slope of the line with the coordinates (0,0) and (-4,7).

Citrus2011 [14]

Answer:

Slope = -7/4

Step-by-step explanation:

Let's find the slope between your two points.

(0,0) ; (−4,7)

(x1,y1) = (0,0)

(x2,y2) = (−4,7)

Use the slope formula:

m = y2−y1 / x2−x1

= 7−0/−4−0

=7/−4

= −7/4

Answer:

m= −7/4

Hope this helps!!

3 0

4 years ago

2019 Chapter Sprint Round, #20

nadezda [96]

Answer:

$Speed\ of\ car=38\ km/h$

Step-by-step explanation:

Distance Covered by Horse:

$Speed\ of\ horse=50\ km\h=50\times \frac{1000}{60}\ meter/ minute\\\\Speed\ of\ horse=\frac{2500}{3}\ meter/minute\\\\Distance\ covered\ in\ 4\ minutes=speed\times time=\frac{2500}{3}\times 4\\\\Distance\ covered\ in\ 4\ minutes=\frac{10000}{3}\ meters\\\\$

Distance covered by Car:

$Let\ speed\ of\ car=x\ meter/minute\\\\time=4\ minutes\\\\Distance\ covered=speed\times time=4\times x=4x$

$Distance\ covered\ by\ horse=Distance\ covered\ by\ car+800\\\\\frac{10000}{3}=4x+800\\\\4x=\frac{10000}{3}-800\\\\4x=\frac{7600}{3}\\\\x=\frac{7600}{3\times 4}\ meter/minute\\\\x=\frac{7600}{3\times 4}\times \frac{60}{1000}\ km/h\\\\x=38\ km/h$

7 0

3 years ago

Is 3/8 is greater than,less than,or equal to 4/6

stiks02 [169]

3/8 is less than 4/6

4 0

3 years ago

Read 2 more answers