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3 years ago

Help - sorry it’s blurry I couldn’t fix it

Mathematics

1 answer:

Natali5045456 [20]3 years ago

4 0

When we choose to do cosine we do adjacent/hypotenuse so it would be...

Cos(32)= x/23

Than solve for x

X= 19.18 o 19.2

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Help pleaseee!!!!!!!!!!

katrin2010 [14]

It is b, I’m a teacher and I have taught my students that.

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3 years ago

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The length of the rectangle is increased by 10%.

jonny [76]

Answer:

8% increase

Step-by-step explanation:

The length after the increase:

30 x 1.1 = 33cm

The width after the increase:

20 x 1.05 = 21cm

New perimeter:

2(33 + 21) = 108 cm^2

Old perimeter:

2(30 + 20) = 100 cm^2

Percentage increase of area:

108 / 100 = 1.08 = 8% increase

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3 years ago

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What type of number is √25? Whole number , integer , rational or irrational . SELECT ALL THAT APPLY

Arlecino [84]

Answer:

A, B, and C.

Step-by-step explanation:

The square root of 25 is 5. 5 is rational, a whole number, and an integer.

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2 years ago

A new car is for lease for $192 per month for 36 months, with a down payment of $358. the lease allows for 12,000 miles per year

Natalija [7]

Answer:

2 733.25 + 7270 = 10 003.25

Step-by-step explanation:

192 * 36 = 6 912 +358 = 7 270

45425 - 36000 ( allowed miles for 3 years )

9 425 * 0.29 = 2 733.25

8 0

2 years ago

Pls help me out with this question

Nezavi [6.7K]

Answer:

83 m (nearest metre)

Step-by-step explanation:

This can be modeled as a right triangle, where the base is 60 m and the height is the height of the building.

Alternate Interior Angles Theorem (Z-angles)

If a line intersects a set of parallel lines in the same plane at two distinct points, the alternate interior angles that are formed are congruent.

Using the Alternate Interior Angles theorem, the angle between the ground and the dashed line (angle of elevation) is 54°.

Tan trigonometric ratio

$\sf \tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle

Given:

$\theta$ = 54°
O = height of building (h)
A = 60

Substituting the given values into the formula and solving for h:

$\implies \sf \tan(54^{\circ})=\dfrac{h}{60}$

$\implies \sf h=60 \tan(54^{\circ})$

$\implies \sf h=82.58291523...$

$\implies \sf h=83\:\:m\:(nearest\:metre)$

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2 years ago

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