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sleet_krkn [62]
3 years ago
13

Evaluate –7(5+3)–[–6]​

Mathematics
1 answer:
EastWind [94]3 years ago
5 0

Answer:

-50

Step-by-step explanation:

-7(5+3)-[-6]​

-35-21-[-6]​

-56+6

-50

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Mary is buying several items that cost $128.25 total. She is using a store coupon for 35% off her purchases, She has to pay 4% s
nikklg [1K]

Answer:

she would have to pay about $88.49

Step-by-step explanation:

128.25x.35=44.8875

128.25-44.8875=83.3625

128.25x.04=5.13

83.3625+5.13=88.4925

4 0
3 years ago
Mathematics help please!!
Elodia [21]
D no solution at least there shouldnt be because when 5 is square rooted times itself it would equal 5 and then adding a variable would make it higher, so d no solution
3 0
4 years ago
As a ship approaches the dock, it forms a 70 angle between the dock and the lighthouse. At the lighthouse, an 80 angle is formed
Trava [24]

Answer:

The distance from the ship to the dock is approximately 5.24 miles

Step-by-step explanation:

From the parameters given in the question, we have;

The angle formed between the dock and the lighthouse = 70°

The angle formed between the dock and the lighthouse at the ship = 80°

The distance between dock and the lighthouse = 5 miles (From a similar question online)

By sine rule, we have;

\dfrac{a}{sin(A)} = \dfrac{b}{sin(B)} = \dfrac{c}{sin(C)}

Therefore, we have;

\dfrac{5}{sin(70^{\circ})} = \dfrac{The \ distance \ from \ the \ ship \ to \ the \ dock}{sin(80^{\circ})}

\therefore The \ distance \ from \ the \ ship \ to \ the \ dock = sin(80^{\circ}) \times \dfrac{5}{sin(70^{\circ})}

sin(80^{\circ}) \times \dfrac{5}{sin(70^{\circ})} \approx 5.24 \ mi

Therefore;

The distance from the ship to the dock ≈ 5.24 miles

7 0
3 years ago
A group of hikers are 675 ft from the base of Guadalupe Peak, which is 8,749 ft tall. What is the angle of elevation when they l
amid [387]
Tan x = 8749/675
x= arctan (8749/675)                            arctan = tan^-1
x=85.59 degrees

6 0
3 years ago
(5^1/2 x 5^-3/2)^-1/4
zhenek [66]
The answer is 25 I believe
3 0
3 years ago
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