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3 years ago

If a+8 = 12 , then a =ayuda por favor

Mathematics

2 answers:

rusak2 [61]3 years ago

8 0

a + 8 = 12

a = 12 - 8

a = 4

NARA [144]3 years ago

7 0

Answer:

a = 4

Step-by-step explanation:

a+8 = 12

a= 12-8

a=4

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Dima020 [189]

Answer:

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Step-by-step explanation:

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3 years ago

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It takes 124 minutes to lift 4 tires on to a lorry how long would it take him to fit 6 tires in a lorry

Blizzard [7]

Answer:186

Step-by-step explanation:

you divide 124 by 2 and you just add the half to 124.

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3 years ago

3. A balancing balloon toy is in the shape of a hemisphere (half-sphere) attached to the base of a cone. If the toy is 4ft tall

Katen [24]

Answer:

The volume of the toy is $V=5.23\ ft^3$

Step-by-step explanation:

step 1

Find the volume of the hemisphere

The volume of the hemisphere is given by the formula

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

In this problem, the wide of the toy is equal to the diameter of the hemisphere

$D=2\ ft$

$r=2/2=1\ ft$ ----> the radius is half the diameter

substitute

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

step 2

Find the volume of the cone

The volume of the cone is given by

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

we know that

The radius of the cone is the same that the radius of the hemisphere

$r=1\ ft$

The height of the cone is equal to subtract the radius of the hemisphere from the height of the toy

$h=4-1=3\ ft$

substitute the given values

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

step 3

Find the volume of the toy

we know that

The volume of the toy, is equal to the volume of the cone plus the volume of the hemisphere.

$V=(\frac{2}{3} \pi+\pi)\ ft^3$

$V=(\frac{5}{3}\pi)\ ft^3$

assume

$\pi=3.14$

$V=\frac{5}{3}(3.14)=5.23\ ft^3$

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4 years ago

Math question 2! Thanks if you help

Greeley [361]

Answer: 15.6 m

Step-by-step explanation:

Two legs of right angle in right triangle given are 12m and 10m.

For the third side use Pythagoras theorem:

C^2= a^2+b^2

C=√[(12^2)+(10^2)]

C=√[144+100]

C=√[244]= 15.6 m

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3 years ago

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LUCKY_DIMON [66]

Answer:

25/2 I believe

Step-by-step explanation:

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4 years ago

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