All categories

2 years ago

Can someone please help me please help me I really need help please help me .

Mathematics

2 answers:

Mariulka [41]2 years ago

5 0

Answer:

$B) sin(\alpha )$

Step-by-step explanation:

$sin(90-0)=Cos(0)$

$Cos(90-0)=sin(0)$

$So...$

$Cos(90-\alpha )= sin(\alpha )$

$------------$

hope it helps...

have a great day!!

pochemuha2 years ago

3 0

Answer:

cos(90°-a)

since it lies in first quadrant

sina

your option is B.sin(a)

You might be interested in

When servicing a heating boiler and radiators, a plumber knows that the time

Elena L [17]

£110 as 45mins times 4 radiators divided by 60 mins =3 hours

3 hours + 1 hour = 4 hours
4 hours times £20= £80
£80+£30=£110

3 0

3 years ago

The potential energy, P, in a spring is represented using the formula P = kx2. Lupe uses an equivalent equation, which is solved

ella [17]

Original equation is $P=kx^{2}$

So, $kx^{2} =P$ and

$k=\frac{P}{x^{2} }$

If we compare this equation with the given options, we can easily find that this matches with the last one $k=\frac{p}{2x^{2} }$ with P = p/2.

Hence, correct option is $k=\frac{p}{2x^{2} }$ .

4 0

3 years ago

Read 2 more answers

Annie estimates that the height of a bookcase is 78.25 in. The actual height is 75.50 in. To the nearest tenth of a percent, wha

Mila [183]

The error is about 3.5%

5 0

2 years ago

Identify which of the following variables are discrete and which are continuous: a. Number of warts on a toad b. Survival time a

gulaghasi [49]

Answer:

1. Number of warts on a toad ⇒ discrete variable

2. Survival time after poisoning ⇒ continuous variable

3. Temperature of porridge ⇒ continuous variable

4. Number of bread crumbs in 10 meters of trail ⇒ discrete variable

5. Length of wolves’ canines ⇒ continuous variable

A discrete variable is the one which takes over range of real number, for a value in range that variables are permitted to take, there is minimum distance to nearest permissible value. In contrast, continuous variables are the one which can take infinitely many values.

4 0

2 years ago

WILL GIVE BRAINLIEST Chang deposited $5000 into an account with a 4.8% annual interest rate, compounded monthly. Assuming that n

Mariulka [41]

Answer:

9.42 years (= 113 months)

Step-by-step explanation:

Use the compound rate interest formula:

$A=P(1+\frac{r}{n})^{nt}$