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2 years ago

I don't understand math.

Mathematics

1 answer:

kicyunya [14]2 years ago

5 0

Answer:

=2 7/12 is needed on sunday

Step-by-step explanation:

Friday + Saturday + Sunday = total time studying

1 1/4 + 2 2/3 + sunday = 6 1/2

Get a common denominator of 12

1/4*3/3 =3/12

2/3 *4/4 =8/12

1/2 *6/6=6/12

1 3/12 + 2 8/12 + sunday = 6 6/12

Combine terms

3 11/12 + sunday = 6 6/12

Subtract 3 11/12 from each side

3 11/12 - 3 11/12 + sunday = 6 6/12 - 3 11/12

sunday = 6 6/12 - 3 11/12

Borrow 1 from 6 in the form of 12/12

sunday = 5 + 12/12+ 6/12 - 3 11/12

= 5 18/12 - 3 11/12

=2 7/12

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Fraction 2 1/3 ÷ 1/4

harkovskaia [24]

Answer:

mixed number form: 9 1/3

decimal form: 9.3 (repeating)

Step-by-step explanation:

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2 years ago

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The water tank in the diagram is in the shape of an inverted right circular cone. The radius of its base is 16 feet, and its hei

Angelina_Jolie [31]

Answer:

6433.98 ft

Step-by-step explanation:

In order to find what 25% of the tank's capacity is, we know to know the full capacity of the tank then take 25% of that. The volume formula for a right circular cone is

$V=\frac{1}{3}\pi r^2h$

We have all the values we need for that:

$V=\frac{1}{3}\pi (16)^2(96)$

This gives us a volume of 25735.93 cubic feet total.

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4 0

2 years ago

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The two-dimensional net of a rectangular prism is shown at the left. What is the prism’s surface area? square units

Tasya [4]

Answer:

28 units²

Step-by-step explanation:

Assume that your net has the dimensions shown below.

Its area is

2 yellow rectangles = 2(4 × 2) = 2 × 8 = 16 units²

2 grey rectangles = 2(4 × 1) = 2 × 4 = 8 units²

2 green rectangles = 2(2 × 1) = 2 × 2 = <u> 4 units²</u>

TOTAL = 28 units²

The prism's surface area is 28 units².

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2 years ago

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Please help will give brainliest

Eddi Din [679]

Answer:

-6

Step-by-step explanation:

The equation is in slope intercept form

y = mx+b where m is the slope and b is the y intercept

The y intercept is the value when x = 0

The y value is -6 when the x value is 0

y = -4x+ (-6)

3 0

2 years ago

A=8, b=5, C=90 degree; Find c, A, and B<br><br> This is for the law of sine and cosine

brilliants [131]

Answer:

• c = √89 ≈ 9.434

• A = arcsin(8/√89) ≈ 57.995°

• B = arcsin(5/√89) ≈ 32.005°

Step-by-step explanation:

By the law of cosines, ...

c² = a² + b² -2ab·cos(C)

Since c=90°, cos(C) = 0 and this reduces to the Pythagorean theorem for this right triangle.

c = √(8² +5²) = √89 ≈ 9.434

Then by the law of sines (or the definition of the sine of an angle), ...

sin(A) = a/c·sin(C) = a/c = 8/√89

A = arcsin(8/√89) ≈ 57.995°

sin(B) = b/c·sin(C) = b/c = 5/√89

B = arcsin(5/√89) ≈ 32.005°

6 0

3 years ago

I don't understand math. ​

I don't understand math.