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Vika [28.1K]
3 years ago
15

Please help for 13 points, 1st to answer gets brainliest 4 1/2−(−6 1/2)

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

11

Step-by-step explanation:

You just put that down and write it though. I don't know how to explain

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The quotient of a number and 2 is the same as the difference of the number doubled and 3. What is the number?
Rudiy27
Let the number be x, then
x/2 = 2x - 3
x = 2(2x - 3) = 4x - 6
4x - x = 6
3x = 6
x = 6/3 = 2.

The required number is 2.
4 0
3 years ago
Read 2 more answers
Find the volume of a sphere, to the nearest tenth, that has a radius of 7cm
Natali [406]

The formula of a volume of a sphere with radius R:

V=\dfrac{4}{3}\pi R^3

We have R = 7cm. Substitute:

V=\dfrac{4}{3}\pi\cdot7^3=\dfrac{4}{3}\pi\cdot343=\dfrac{1372\pi}{3}\ cm^3

\dfrac{1372\pi}{3}\approx1436.0\ cm^3

<h3>Answer: V = 1436.0 cm³</h3>
8 0
3 years ago
Someone help me with this math homework please!
Reil [10]

Answer:

Option number B

Step-by-step explanation:

As per the statement:

Pieter wrote and solved an equation that models the number of hours it takes to dig a well to a level of 72 feet below sea level.

Given the equation as:

7h - 5 ( 3h -8 ) = -72

Using distributive property, 

a ⋅ ( b + c ) = a ⋅ b + a ⋅ c

7h - 15h + 40 = - 72

Combine like terms;

-8h + 40 = -72

Subtract 40 from both sides we have;

-8h 8= -112

Divide both sides by -8 we have;

h = 14 hours

Therefore, the statement is true about Pieter’s solution is, It must be a positive number since it represents a number of hours.

3 0
3 years ago
Help is needed please????
Leona [35]

Answer: let F(x)=y

y=2x+5

Step-by-step explanation:

3 0
3 years ago
at a grocery store, an uncooked beef roast is on sale for $5.99/lb. At the same grocery store, prepared roast beef is available
-Dominant- [34]

Answer:

$7.58/lb

Step-by-step explanation:

raw roast: $5.99 per lb

deli roast: $2.99 for 100g

We know the price per lb of the raw roast.

Let's find the price per lb of the deli roast.

1 lb = 454 grams

454 grams / 100 grams = 4.54

1 lb is 4.54 times 100 g

If we multiply the price of 100g of deli roast by 4.54, we get teh price per lb.

$2.99/lb * 4.54 = $13.57/lb

raw roast: $5.99/lb

deli roast: $13.57/lb

difference in price of 1 lb: $13.57 - $5.99 = $7.58

Answer: $7.58/lb

3 0
3 years ago
Read 2 more answers
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