All categories

2 years ago

HELP I NEED HELP WITH 1,2 and 8

Mathematics

1 answer:

Yanka [14]2 years ago

7 0

Answer:

$19.79

Step-by-step explanation:

The only problem provided is #8, so I will help on that one lolz.

First, you find 10% of $19.99.

That is $2

This is a discount, so subtract 2 from the original, 19.99.

You get 17.99.

Adding a sales tax of 10% is $1.80.

This makes $19.79

You might be interested in

A golfer hits an errant tee shot that lands in the rough. A marker in the center of the fairway is 150 yards from the center of

Gwar [14]

$\bold{\huge{\underline{ Solution}}}$

<h3>Given :-</h3>

A marker in the center of the fairway is 150 yards away from the centre of the green
While standing on the marker and facing the green, the golfer turns 100° towards his ball
Then he peces off 30 yards to his ball

We have to find the distance between the golf ball and the center of the green .

<h3>Let's Begin :-</h3>

Let assume that the distance between the golf ball and central of green is x

Here, 

Distance between marker and centre of green is 150 yards
That is, Height = 150 yards
For facing the green , The golfer turns 100° towards his ball
That is, Angle = 100°
The golfer peces off 30 yards to his ball
That is, Base = 30 yards

According to the law of cosine :-

$\bold{\red{ a^{2} = b^{2} + c^{2} - 2ABcos}}{\bold{\red{\theta}}}$

Here, a = perpendicular height
b = base
c = hypotenuse
cos theta = Angle of cosine

So, For Hypotenuse law of cosine will be :-

$\sf{ c^{2} = a^{2} + b^{2} - 2ABcos}{\sf{\theta}}$

Subsitute the required values,

$\sf{ x^{2} = (150)^{2} + (30)^{2} - 2(150)(30)cos}{\sf{100°}}$

$\sf{ x^{2} = 22500 + 900 - 900cos}{\sf{\times{\dfrac{5π}{9}}}}$

$\sf{ x^{2} = 22500 + 900 - 900( - 0.174)}$

$\sf{ x^{2} = 22500 + 900 + 156.6}$

$\sf{ x^{2} = 23556.6}$

$\bold{ x = 153.48\: yards }$

Hence, The distance between the ball and the center of green is 153.48 or 153.5 yards

5 0

1 year ago

What’s 10% of 70 I really need the answer plz help!!!!!

egoroff_w [7]

10% of 70 is 7

hope this help

6 0

2 years ago

Read 2 more answers

4x-y=2 what is the solution

Rudiy27

Answer= y=-_

Step-by-step explanation:

y= -2+4x

4 0

1 year ago

A circular patio has a diameter of 12 feet. Holly is stringing lights around the edge of the patio.

REY [17]

Answer:

The answer is 37.68 ft.

Step-by-step explanation:

I took the quiz (K12). I would appreciate if you marked me brainliest !

4 0

1 year ago

Work out the volume of a sphere please help i’ll give u brainlest

Doss [256]

Answer:

V = 3591.4 cm³

Step-by-step explanation:

Volume of Sphere = $\frac{4}{3} \pi r^3$

Where r = 9.5 cm

V = $\frac{4}{3} (3.14)(9.5)^3$

V = $\frac{4}{3} (3.14)(857.4)$

V = $\frac{10774}{3}$

V = 3591.4 cm³

7 0

2 years ago

Read 2 more answers