Ask question

Ask question

All categories

andrezito [222]

3 years ago

10

Josephine wants to put a border around the ceiling of her room. The dimensions are shown above. How many feet of border does she

need? ( The measurements are the in the picture above )

1 answer:

elena-14-01-66 [18.8K]3 years ago

7 0

She needs 2 1/2 ft to cover the ceiling

You might be interested in

Sam decides to buy 100 shares of DEF company. They cost $16.60 a share. The commission is 6% of the total price. What is Sam's t

Serga [27]

100×16.60=1,660

Sam cost
1,660+1,660×0.06=1,759.6

5 0

3 years ago

Read 2 more answers

I need to find the correct measure of central tendency & dispersion with each variable. In addition, the 5-number summary &a

OLga [1]

Answer:

مرحبًا آمل أن يساعد هذا على أمل أن يكون لديك يوم كامل رائع ههههههه

3 0

3 years ago

Coco needs 150mg of a medication that comes in tablets labelled 100mg each. How many tablets will you give her?

shtirl [24]

Answer:

1.5

Step-by-step explanation:

If 1 tablet is 100mg, and you need 150mg, we set up this equation:

Let x be the number of tablets Coco needs.

x = 150/100

x = 1.5

Therefore, you need 1.5 tablets for the medication.

7 0

2 years ago

Find cos(2*ABC) 100POINTS

juin [17]

Answer:

$-\dfrac{7}{25}$

Step-by-step explanation:

<u>Trigonometric Identities</u>

$\cos(A \pm B)=\cos A \cos B \mp \sin A \sin B$

<u>Trigonometric ratios</u>

$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$

where:

$\theta$ is the angle
O is the side opposite the angle
A is the side adjacent the angle
H is the hypotenuse (the side opposite the right angle)

Using the trig ratio formulas for cosine and sine:

$\cos(\angle ABC)=\dfrac{3}{5}$

$\sin(\angle ABC)=\dfrac{4}{5}$

Therefore, using the trig identities and ratios:

$\begin{aligned}\implies \cos(2 \cdot \angle ABC) & = \cos(\angle ABC + \angle ABC)\\\\& = \cos (\angle ABC) \cos (\angle ABC) - \sin(\angle ABC) \sin (\angle ABC)\\\\& = \cos^2(\angle ABC)-\sin^2(\angle ABC)\\\\& = \left(\dfrac{3}{5}\right)^2-\left(\dfrac{4}{5}\right)^2\\\\& = \dfrac{3^2}{5^2}-\dfrac{4^2}{5^2}\\\\& = \dfrac{9}{25}-\dfrac{16}{25}\\\\& = \dfrac{9-16}{25}\\\\& = -\dfrac{7}{25} \end{aligned}$

7 0

2 years ago

Read 2 more answers

I need help proving the y-intercept is 5 but I can't figure it out and will give brainliest if you can show the steps how you go

elixir [45]

So, honestly if its allowed you can just graph the equation ti prove the y intercept is five

4 0

2 years ago