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3 years ago

Plz help me, and go step by step on how to do it plz

Mathematics

2 answers:

skad [1K]3 years ago

4 0

• first you have to move the constant to the right hand side and change it’s sign
2s + 5 > 21
2s > 21 - 5
• now you substract 21 -5
2s > 16
• divide both sides by 2 to isolate the variable and you’ll get your answer
2s / 2 > 16/2
• the answer is
s > 8

Fudgin [204]3 years ago

3 0

Answer:

8 i believe

Step-by-step explanation:

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3 lb 9oz + 5lb 10 oz.

Eduardwww [97]

Answer:

9 lb 3 oz

Step-by-step explanation:

(3 + 5) lb + (9 + 10) oz

8 lb + 19 oz

16 oz = 1 lb

(8 + 1) lb + (19 - 16) ox

9 lb 3 oz

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3 years ago

What is 527.79 rounded to the nearest thousandth?

Paha777 [63]

527.79

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3 years ago

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In the rectangle below, AC has a length of 28 units. What is the length of DE?

Amiraneli [1.4K]

Answer:

D. 14 units

Step-by-step explanation:

it is a rectangle.

that means both diagonals are equally long.

E is in the middle of of diagonals.

so, since the whole diagonal (AC = DB) is 28 units long, one half of such a diagonal (AE = EC = DE = EB) is then

28/2 = 14 units long.

4 0

3 years ago

HELP I NEED HELP ASAP

antoniya [11.8K]

The width is w. the length is 2w - 4. to find area we would multiply these two together: w(2w - 4) & make sure to distribute the w to the 2w AND the -4. so the answer to this question would be 2w^2 - 4w (c). hope this helps!

6 0

3 years ago

What’s the exact volume of the figure?

Anna11 [10]

Answer:890.12 cm^3

Step-by-step explanation:

The formula for the volume of a cylinder is

$V=\pi *r^2*h$

V=628.3185307 cm^3

or simply

V=628.32 cm^3

Since, you know the radius of the hemisphere on top, you also know the radius since the height of the hemisphere is the same as it is wide.

Next, the formula for the volume of a sphere is

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

so the volume of a hemisphere is half of that or:

$V=\frac{2}{3} *\pi *r^3$

V= 261.7993878 cm^3

or simply

V=261.80 cm^3

Finally, you add both of the volumes together to get

V= 890.1179185 cm^3

or simply

V=890.12 cm^3

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3 years ago