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4 years ago

18=3+y what dose y equal

Mathematics

2 answers:

ANTONII [103]4 years ago

7 0

18=3+y
18-3=y
15=y.
This is the answer for your question

Stella [2.4K]4 years ago

4 0

Answer:

y = 15

Step-by-step explanation:

Subtract 3 from 18

18 - 3 = 15

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Find the distance between (2.7,5.1) and (3,4.7)

LUCKY_DIMON [66]

Answer:

Distance = 0.5

Step-by-step explanation:

A(2.7 , 5.1) B(3 , 4.7)

D = √((4.7 - 5.1)² + (3 - 2.7)²)

D = √(12² + 5²)

D = 0.5

3 0

3 years ago

With a ruler, Diamond determines the diameter of a golf ball to be 4.2 centimeters (a radius of 2.1 cm) and the diameter of a pr

Troyanec [42]

Answer:

Diamonds is incorrect, because, the volume of the softball is 8 times the volume of the golf ball

Step-by-step explanation:

we know that

The volume of a sphere is equal to

$V=\frac{4}{3}\pi r^{3}$

where

r is the radius

step 1

Find the volume of the golf ball

we have

$r=2.1\ cm\\pi =3.14$

substitute

$V=\frac{4}{3}(3.14)(2.1)^{3}=38.77\ cm^3$

step 2

Find the volume of the the softball

we have

$r=4.2\ cm\\pi =3.14$

substitute

$V=\frac{4}{3}(3.14)(4.2)^{3}=310.18\ cm^3$

step 3

Find the ratio of volumes

Divide the volume of the softball by the volume of the golf ball

$\frac{310.18}{38.77}=8$

That means

Diamonds is incorrect, because, the volume of the softball is 8 times the volume of the golf ball

7 0

3 years ago

Evaluate the following expression for n=8 4+(n-2)divided by 3

Anna71 [15]

I think the answer would be 6.

Since n=8,

the equation could be rewritten as 4+(8-2)÷6

There is a rule called PEMDAS

Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

When solving equations, we should follow this rule.

Since there are parenthesis in the equation, we have to solve inside it first. Inside the parenthesis, we see the equation 8-2. 8-2 would equal 6. Then the whole equation would become 4+6÷3. Since division is the next operation in the equation(according to PEMDAS), we divide. 6÷3 would equal 2. Then the equation becomes 4+2. 4+2 would equal 6. Then the answer would be 6. I hope this helped :)

8 0

3 years ago

HELP!!!

Tom [10]

Answer:

x + (x + 2) = 30

Step-by-step explanation:

Number of Pennies = x

Number of Nickels = x + 2

Total = 30

x + (x +2) = 30

Hope it helps