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omeli [17]
3 years ago
9

Evaluate the expression. ( – 5+ – 9)× – 3÷ – 2

Mathematics
2 answers:
gayaneshka [121]3 years ago
6 0

Answer:

-21.

Step-by-step explanation:

( – 5+ – 9)× – 3÷ – 2

Using order of operations we work out the parentheses first:

= (-5 - 9) * -3 / 2

= -14 * -3 / -2  Now the multiplication followed by the division:

= 42 / -2

= -21.

Ronch [10]3 years ago
3 0

Answer:

-21

Step-by-step explanation:

( - 5+ - 9) \times - 3 \div - 2

Solve the brackets first.

( - 14) \times - 3 \div - 2

Division comes next.

( - 14) \times - 3/-2

Cancel the negative signs.

- 14 \times 3/2

Multiply the terms.

-42/2

=-21

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A gas station has a cylindrical fueling tank that holds the gasoline for its pumps, as modeled below. The tank holds a maximum o
IRINA_888 [86]

Answer:

\boxed{ \text{10.9 ft}}

Step-by-step explanation:

The formula for the volume of a cylinder is

V = πr²h

Data:

V = 20 000 gal

h = 34.5 ft

Calculations:

I assume the gasoline tank is lying on its side, so we are asked to find the diameter of the tank.

(a) Convert the volume to cubic feet

V= 20 000 gal × (1 ft³/7.48 gal) = 2674 ft³

(b) Calculate the radius of the tank

V = πr²h

r² = V/(πh) = 2674/(π × 34.5) = 24.67 ft²

r = √24.67 = 4.967 ft

(c) Calculate the diameter of the tank

d = 2r = 9.934 ft

(d) Calculate the length of the measuring pole

l = d + 1 = 9.934 + 1 = \boxed{ \textbf{10.9 ft}}

8 0
3 years ago
Two buses leave a station at the same time and travel in opposite directions. One bus travels 18 mi/h faster than the other. If
ValentinkaMS [17]

Answer:

The distance each bus travels is given as d=tr where

- d is distance bus travels

- t is a time bus travels

- r is the speed of the bus

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Distance first bus travels for 4 hours is d1=4r.

Distance other bus travels for 4 hours is d2=4(r+12).

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The total distance between them is 480 miles and since they go in opposite directions this distance is the sum of distances each bus travels.

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d1+d2=480

4r+4(r+12)=480

4r+4r+48=480

8r+48=480

8r=432

r=432/8

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r+12=66 mph, this is the speed of the second bus

Hope this helps you!!!! :D

8 0
3 years ago
Please can someone help my assignment in math​
Zielflug [23.3K]

Answer/Step-by-step explanation:

1. B = 180 - (90 + 58) (sum of triangles)

B = 32°

Let's find a and b using trigonometric ratios:

Reference angle = 58°

Opposite = a = ?

Hypotenuse = c = 27

Adjacent = b = ?

✔️To find a, apply SOH:

Sin 58 = Opp/Hyp

Sin 58 = a/27

a = 27*Sin 58

a = 22.8972986 ≈ 22.9 (nearest tenth)

✔️To find b, apply CAH:

Cos 58 = Adj/Hyp

Cos 58 = b/27

b = 27*Cos58

b = 14.3 (nearest tenth)

2. B = 180 - (90 + 63) (sum of triangles)

B = 27°

Let's find a and b using trigonometric ratios:

Reference angle = 63°

Opposite = a = 11

Hypotenuse = c = ?

Adjacent = b = ?

✔️To find b, apply TOA:

Tan 63 = Opp/Adj

Tan 63 = 11/b

b = 11/Tan 63

b = 5.6 (nearest tenth)

✔️To find c, apply SOH:

Sin 63 = Opp/Hyp

Sin 63 = 11/c

c = 11/Sin 63

c = 12.3 (nearest tenth)

7 0
3 years ago
The rental fee for space at a flea market is $200 per month base rate
shepuryov [24]

Answer:

can you take a picture or is it just words so if theres like a number line or something

Step-by-step explanation:

6 0
3 years ago
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gulaghasi [49]

                  = Answer:

Step-by-step explanation:

interest= 3500 * 6 * 6.9* 1/100

                  = 4949

Final value = £ 3500 + 1449

                  = 4949

5 0
3 years ago
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