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3 years ago

9.6 + [(3.1 x 2) - 2.3] + 4 to the 2nd power

Mathematics

1 answer:

baherus [9]3 years ago

3 0

That will be 29.5
Hopefully it’s right

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The combined weight of 2 identical dice, 5 identical balls and 4 identical marbles was 260 grams. The combined weight of one die

olya-2409 [2.1K]

Answer:

The total weight of one die, one ball, and one marble is 75 grams.

Step-by-step explanation:

Consider the provided information.

Let d represents the number of dice, b represents the number of balls and m represents the number of marbles.

So according to the question.

The combined weight of 2 identical dice, 5 identical balls and 4 identical marbles was 260 grams.

$2d+5b+4m=260$ ....(1)

The combined weight of one die and one marble was 55 grams.

$d+m=55$

$m=55-d$ ....(2)

3 balls weighed the same as two dice.

$3b=2d$

Multiply both sides by 5 and divide by 3.

$5b=\frac{10}{3}d$ .....(3)

Now put the value of equation 2 and 3 in equation 1.

$2d+\frac{10}{3}d+4(55-d)=260$

$2d+\frac{10}{3}d+220-4d=260$

$\frac{6d+10d-12d}{3}=40$

$4d=120$

$d=30$

Put d=30 in equation 2.

$m=55-30$

$m=25$

Put d=30 in equation 3.

$5b=\frac{10}{3}\times 30$

$5b=100$

$b=20$

The total weight (in grams) of one die, one ball, and one marble is:

$d+m+b=25+20+30$

$d+m+b=75$

The total weight of one die, one ball, and one marble is 75 grams.

8 0

3 years ago

The radius of a circle is 5 inches find the exact area of the circle

jeyben [28]

I think the answer is 78.53982
Hope it helps!

8 0

1 year ago

sam and cliff are both saving money. sam starts with 20$ and save 10$ per week. cliff starts with 50 and saves 7$ per week. when

tamaranim1 [39]

Answer:

i think that they will get the same amount after a week's pay

4 0

3 years ago

Read 2 more answers

Solve using DISTANCE = RATE X TIME

wariber [46]

The rate is speed which 50m/h. so he left the home at 10:00 and arrived at noon which 12:00pm so the difference is 2 hours which means he took 2 hours to get there.
to find the distance.
D=RxT = 50 x 2 = 100mile

6 0

3 years ago

Read 2 more answers

What is the volume of A cube with the surface area of 600 in.²

GrogVix [38]

Answer:

1000 in³

Step-by-step explanation:

A cube has 6 square faces

Given the surface area of the cube = 600 in², then

The area of 1 face = 600 ÷ 6 = 100 in²

The area of a square = s² ( where s is the measure of a side ), thus

s² = 100 ( take the square root of both sides )

s = $\sqrt{100}$ = 10

The volume (V) of the cube = s³, so

V = 10³ = 1000 in³

8 0

4 years ago