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4 years ago

What fraction of the months of the year have 31 days

Mathematics

1 answer:

ozzi4 years ago

7 0

7 out of 12 have 31 im guessing

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Help me solve this please

drek231 [11]

Answer:

x is 46.67

y is 28.4°

Step-by-step explanation:

To solve for x we use sine

sin ∅ = opposite / hypotenuse

AC is the opposite

x is the hypotenuse

so we have

sin 59° = 40 / x

x sin 59 = 40

Divide both sides by sin 59

x = 40/sin 59

x = 46.67

To solve for y we also use sine

sin y = 30/ 63

y = sin^-1(30/63)

y = 28.4°

Hope this helps you

3 0

4 years ago

The perimeter of a triangle is 60 feet. Of the two unknown sides, the length is twice as long as the other. Find the lengths of

erik [133]

Answer: The length is 30, the 2 sides are 15.

Step-by-step explanation:

4 0

3 years ago

the surface area of a sphere is 1,017.36 square inches.what is the volume of the sphere? use 3.14 for pi

emmasim [6.3K]

Answer:

Area = 254.34 inches ³

Step-by-step explanation:

The formula to find the surface area of a sphere is:

$SA = 4\pi r^{2}$

To find the volume of the sphere, we first need to figure out the radius ( $r$ ) of the sphere. We can accomplish this by reversing the formula that was used to find the surface area. $(1017.36 in^{2})$

$SA = 4\pi r^{2}$

$1017.36 = 4\pi r^{2}$

Divide both sides by pi ( $3.14$ ).

$1017.36 = 4\pi r^{2}$

$324 = 4 r^{2}$

Divide both sides by 4.

$324 = 4 r^{2}$

$81 = r^{2}\\$

Find the square root of both sides.

$81 = r^{2}\\$

$\sqrt{81} = r$

radius = 9

Insert the value of the radius into the formula for finding the volume of a sphere. $(A=\pi r^{2})$

$(A=\pi r^{2})$

$A=\pi (9)^{2}$

$A=\pi (81)$

$A = 254.34$

Area = 254.34 inches ³

~Hope this helps!~

4 0

3 years ago

PLEASE ANSWER THIS AND IF YOU DO YOU GET 1. FOLLOW 2. BRAINLIEST

spin [16.1K]

Answer:

1. y= 2x + 5

2. y= 2x -16

3. - 7/5 x + 18/5

3 0

3 years ago

7 less than a number s? What is the algebraic expression

makkiz [27]

S-7
the amount 'less than a number' always goes after the actual number :)

7 0

3 years ago

Read 2 more answers