7 1/2 + 8 1/3 Brainly One

2 answers:

4 0

First, make all the fractions have the same denominator. That would make 39/6 + 50/6. Then, just add the tops together, and your answer is 89/6.

Nesterboy [21]3 years ago

4 0

7 1/2 + 8 1/3 = 15.83 or in fractions 15 83/100

Hope this helps

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The radius of a sphere is multiplied by . What effect does this have on the volume of the sphere? A. The volume of the sphere is

Greeley [361]

Answer:

Option A. The volume of the sphere is multiplied by 1/343.

Step-by-step explanation:

The volume of a sphere can be obtained by the following formula:

V = 4/3πr^3

Let the initial volume (V1) of the sphere be:

V1 = 4/3πr^3 = (4πr^3)/3

Now, if we multiply the radius by 1/7, then the new volume (V2) of the sphere will be:

V2 = 4/3 x π x (1/7r)^3

V2 = 4/3 x π x 1/343r^3

V2 = (4πr^3)/1029

Now we determine the ratio of V2 : V1 as shown below:

V2/V1 = (4πr^3)/1029 ÷ (4πr^3)/3

V2/V1 = (4πr^3)/1029 × 3/(4πr^3)

V2/V1 = 3/1029

V2/V1 = 1/343

V2 = 1/343 x V1

Therefore, the volume of the sphere is multiplied by 1/343.

3 0

3 years ago

Which of the following changes will always be true for an exothermic process?

Ivenika [448]

Given that I no not see any explanation in the previos answer, I think you can benefit of this.

Exothermic refers only to the fact that the reaction releases energy in the form of heat when occurs. So, the enthalpy is higher at start and lower and the end.

Seen in this way, you can deduct that the change in enthalpy is negative, which is what the third option says.

6 0

3 years ago

Read 2 more answers

Please help :')

nordsb [41]

Let

x---------> represents Martin's sister's age

y--------> represents Martin's age

we know that

$y=x-6$ --------> equation $1$