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Jlenok [28]
2 years ago
11

Evaluate the expression. 3x + 2y for x = 4.2, y = 2.7

Mathematics
1 answer:
sveticcg [70]2 years ago
4 0

Answer:

18

Step-by-step explanation:

4.2 • 3= 12.60

2.7 • 2= 5.4

12.6+ 5.4=

18.0

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From the top of an apartment building, the angle of depression to a car parked on the street below is 32 degree. The car is park
Citrus2011 [14]

Answer: The height of the building = 56 feet.

Step-by-step explanation:

Let AB be the height of the building and BC be the distance of the car from the building on the ground.

Now , ∠ C = 32°   [Alternate interior angles ]

According to the trigonometry,

\tan x =\dfrac{Perpenicular}{base}\\\\\Rightarrow\ \tan 32^{\circ} =\dfrac{AB}{90}\\\\\Rightarrow\ 0.6248693519=\dfrac{AB}{90}\\\\\Rightarrow\ AB = 90\times 0.6248693519=56.238241671\approx56

Hence, the height of the building = 56 feet.

6 0
3 years ago
Stacy exercises 3 days each week by walking around the soccer field near her home the field is 80 yards wide and 115 yards long
zhenek [66]

a: draw a rectangle an label one side 80 and the other 115

b: 1560 Yards

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3 years ago
Lois is riding in the country. after riding her bike at a constant speed for 4 hours, she finds that she traveled a distance of
never [62]
She is going 13 miles an hour or 52 divided by 4
7 0
3 years ago
Read 2 more answers
ASAP please help
asambeis [7]
The answer to A) 700
The answer to B) 250
6 0
2 years ago
Read 2 more answers
I need help please and thank you
STatiana [176]

Answer:

∠A = 45°

Step-by-step explanation:

The sum of angles in a triangle = 180°.

That means in the triangle ABC, ∠A + ∠B + ∠C = 180°.

Given ∠B = 90° and ∠C = 45°.

⇒ ∠A + 90° + 45° = 180°

⇒ ∠A = 180 - 90 - 45

⇒ ∠A = 45° is the required answer.

4 0
3 years ago
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