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3 years ago

(+24) – (-6) + (-8) – (-2) =

Mathematics

1 answer:

mezya [45]3 years ago

8 0

Answer:

Step-by-step explanation:

(+24) – (-6) + (-8) – (-2)

= 24 + 6 - 8 + 2

= 24

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Last autumn, julia noticed something interesting as she blew up spherical balloons for harris's birthday party. she calculated t

Vikki [24]

To find whether the volume would be doubled when the radius is,we can find the volume of the two balloons.

The formula of a sphere is:
$\frac{4}{3} \pi \: {r}^{3}$
Let's take 丌 as 3.14

The volume of the balloon with 4cm radius:
$\frac{4}{3}(3.14) \times {4}^{3} \\ = 4.18667 \times 64 \\ = 267.94688$

The volume of the balloon with 8cm radius:
$\frac{4}{3}(3.14) \times {8}^{3} \\ = 4.18667 \times 512 \\ = 2143.57504$
As we can see,
267.94668 × 2 = 535.89 ≠2145.56

Thus,she wouldn't discover that the volume is twice as big when the radius is doubled.

Hope it helps!

4 0

3 years ago

Read 2 more answers

Write an expression for the calculation double 2 and then add 5.

Mariana [72]

The expression is (2x2)+5

8 0

2 years ago

To decrease your household water usage by 10% a month means that a household using 4000 gallons of water a month would cut down

a_sh-v [17]

Answer:

3600

Step-by-step explanation:

0.1*4000=400

4000-400=3600 gallons

8 0

3 years ago

Simplify the given expression. (18+ - 8)2

JulsSmile [24]

Answer:

Step-by-step explanation:

Our expression:

2 * (18 + - 8)

Plus then minus (+ -) is the same as just minus ( - )

Some examples:

1 + (+ 1) = 2

1 + (- 1) = 0

1 - (+ 1) = 0

1 - (- 1) = 2

Thus, 18 + - 8 is the same as 18 - 8

2 * (18 + - 8) =

= 2 * (18 - 8) =

= 2* (10) =

= 2 * 10 =

= 20

Answer: 20

6 0

2 years ago

complet. each statement by rounding the number to given place value. use the number line to show your work a 53,000 rounded to t

tresset_1 [31]

50,000 because when the number next to the main number is below 5 then you round down...if it is 5 or above then you round up

5 0

3 years ago