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3 years ago

30 secs on battery hurry for brainles

Mathematics

2 answers:

Gemiola [76]3 years ago

6 0

Answer:

It is 8 1/2

Step-by-step explanation:

;)

labwork [276]3 years ago

3 0

Answer:

$8\frac{1}{2}$

Step-by-step explanation:

$\frac{17}{2}=$ $8\frac{1}{2}$

17 ÷ 2 = 8.5

8.5 as a mixed number is $8\frac{1}{2}$ .

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Joe weights 20lbs .less than twice Jeff's weight. If Jeff would gain lbs,.then together they would weight 250lbs. how much does

Hoochie [10]

230Ibs because altogether is 250Ibs and. Joe is 20Ibs so you subtract 250 by 20 and you get 230Ibs

6 0

3 years ago

You randomly select one card from a 52 card deck find the probability of selecting a ace or a two

balu736 [363]

The odds of picking an ace or a 2 are 8 out of 52 or 8/52 or 2/13.

3 0

2 years ago

Roughly estimate the volume of a tennis ball in cubic cm by using 6 cm for diameter and 3 for pi. round the answer to the neares

galben [10]

The volume of ball is 113.04 cubic centimeter

Solution:

Given that we have to find the volume of tennis ball

Since the ball is of sphere shape, we can use the sphere formula

The volume of sphere is given by formula:

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

Where, "V" is the volume and "r" is the radius

Given that,

Diameter = 6 cm

Therefore,

$Radius = \frac{diameter}{2}\\\\Radius = \frac{6}{2}=3$

Substituting in formula, we get

$V = \frac{4}{3} \times 3.14 \times 3^3\\\\V = 4 \times 3.14 \times 3^2\\\\V = 12.56 \times 9\\\\V = 113.04$

Thus volume of ball is 113.04 cubic centimeter

3 0

3 years ago

how many liters is 70% alcohol solution must be added to 50 L of 40% alcohol solution to produce a 50% alcohol solution

Anettt [7]

Answer:

50%

Step-by-step explanation:

This question is solved by C1V1 + C2V2 ÷ V1 + V2 = final concentration

Let x = volume of 70% solution

let's express the concentrations as decimals, so 70% = 0.7, 50% = 0.5, and 40% = 0.4

then 0.7X + 50L.4 ÷ X + 50L = 0.5

this equation becomes 0.5(X + 50) = 0.7X + 20

which yields 0.5X + 25 = 0.7X +20

combining, we get 5 = 0.2X, and 25 = X

when we mix the two volumes, we get 50L x 40% + 25L x 70%,

which yields 20L of 100% alcohol, and 17.5L of 100% alcohol, for a total of 37.5L of alcohol in 75L of solution

which is a final concentration of 50%

3 0

3 years ago

A number is increased by 5, and then squared. The expression which correctly represents this quantity is A) x + 25 B) x2 + 10 C)

Ksju [112]

Answer:

(x+5)^2

x^2+25

so it's C

wish it helped

5 0

3 years ago