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3 years ago

Help this is timed Its Math dont answer if u dont know

Mathematics

1 answer:

meriva3 years ago

5 0

Answer:

the last one

Step-by-step explanation:

the formula is AS= 2(Pi)r^2 + 2(pi)rh r^2= r x r

the r is 3 because Radis is half of the dynamiter

and pi= 3.14

the h(ight) is 14

plug in the #'s

2(3.14)3^2+2(3.14)3 x 14

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I don’t get this one please HELPPP MEE

iren2701 [21]

Answer:

135

Step-by-step explanation:

The given expression is

$\frac{2 {x}^{2} }{x} +x(100 - 15x)$

From the question, x=5

So,by substitution,we obtain

$=\frac{2({5}^{2})}{5} +5(100 - 15(5))$

$=\frac{2(25)}{5} +5(100 - 75))$

$=2(5)+5(25)$

$= 10+125$

$= 135$

Hence the answer is 135

8 0

3 years ago

Andy bought 4 hamburgers snd 2 milkshakes for $13.50. Danny bought 3 hamburgers and 1 milkshake for $9.25. What cost of a hambur

Molodets [167]

A hamburger costs $2.5 and a milkshake costs $1.75

Step-by-step explanation:

Step 1: Form equations from the given details. Let cost of 1 hamburger be H and cost of 1 milkshake be M.

4H + 2M = 13.50 ------ (1)

& 3H + 1M = 9.25 ------ (2)

Step 2: Multiply eq(2) with 2 to make coefficients of M equal.

6H + 2M = 18.50 ------- (3)

Step 3: Subtract eq(3) from eq(1)

⇒ - 2H = - 5

⇒ H = $2.5

Step 4: Substitute value of H in eq(2) to find M.

⇒ 3 × 2.5 + M = 9.25

⇒ 7.5 + M = 9.25

⇒ M = $1.75

4 0

3 years ago

How do i simplify (8×102)⋅(2.5×102)

jenyasd209 [6]

Answer:

208,080

Step-by-step explanation:

(8x102)x(2.5x102)

102x8=816

102x2.5=255

(816)x(255)

816x255=208,080

4 0

3 years ago

Read 2 more answers

What fraction of box does each student receive?

Iteru [2.4K]

2.B that the answer

6 0

3 years ago

Read 2 more answers

Write the fraction 1/5 as a percent.

luda_lava [24]

Answer:

20%

Step-by-step explanation:

3 0

3 years ago