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2 years ago

Please helpppppp asap

Mathematics

1 answer:

Karo-lina-s [1.5K]2 years ago

7 0

Answer:

C: 544

Step-by-step explanation:

4hr x 2 = 8hrs this means the time is just doubled so to solve the equation we do the following

272 x 2 = 544

272 + 272 = 544

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Breyanna is buying a new dress .The dress is on sale for 20% off.Breyanna will also have to pay 10% sales tax on the discounted

Nuetrik [128]

Hi,<span>
Let x be 100 dollars(since per cent means out of 100)(also SP)
</span>SP without sales tax= 100 - d%/100 * SP
= 100-20/100 * 100
=80/100 * 100
= 0.8 * 100
= 80 dollars=SP without tax
tot. SP(SP with tax)= 100 + tax%/100 * SP
=100 + 10 /100 * 80
= 110/100 * 80
= 11/10 * 80
=1.1* 80
=88%
Breyanna will have to pay 88% <span>of the dress original price.
Hope this helps you.</span>

8 0

3 years ago

Problem Yoda Soda is the intergalactic party drink that will have all your friends saying, "Mmmmmm, good this is!" You are throw

mash [69]

For 121212 guests we need 555 liters,for 363636 guests how many liters

Guests Soda
121212 555
363636 x

So 121212*x=363636*555
x=363636*555/121212
x=555*3
x=1665

4 0

4 years ago

Which equation represents a nonlinear function?

Kisachek [45]

Answer: y = 3x³

Step-by-step explanation: the exponent means it's an exponential function, not a linear function.

4 0

3 years ago

Trigonometry problem

IgorC [24]

Answer:

The values are x = 0° or x = 60°

Step-by-step explanation:

Given:

$\cos x + \frac{1}{\sqrt{3} }\times \sin x = 1$

Let it be in the form of

$a\cos x + b\sin x = 1$ such that

a = 1

$b=\frac{1}{\sqrt{3} }$

We have

$\sqrt{(a^{2}+b^{2} )}=\sqrt{(1^{2}+(\frac{1}{\sqrt{3} }) ^{2} )}\\=\sqrt{\frac{4}{3}}\\=\frac{2}{\sqrt{3} }$

Now, Dividing both the side by $\frac{2}{\sqrt{3} }$ we get

$\frac{\sqrt{3} }{2}\cos x + \frac{1}{2}\sin x =\frac{\sqrt{3} }{2}\\$

We Know

$\sin 60 =\frac{\sqrt{3} }{2}\\and\\\cos 60 = \frac{1}{2}$

Now by replacing with above values we get

$\sin 60\times \cos x + \cos 60\times \sin x = \frac{\sqrt{3} }{2}\\$

Also we have formula

$\sin A\times \cos B + \cos A\times \sin B = \sin (A+B)$

By applying the above Formula we get

$\sin (60+x)=\frac{\sqrt{3} }{2}\\$

Also ,

$\sin (60)=\frac{\sqrt{3} }{2}\\and\\\sin (120)=\frac{\sqrt{3} }{2}$

Comparing we get

60 + x = 60 or 60 + x = 120

∴ x = 0° ∴ x = 120 - 60 = 60°

Therefore, the values are x = 0° or x = 60° i.e between 0° to 360°

5 0

3 years ago

( 5 + 0) +4=5 +4 what property of addition is this

sergeinik [125]

Answer:

Associative Property

Step-by-step explanation:

To associate means to connect or join with something. According to the associative property of addition, the sum of three or more numbers remains the same regardless of how the numbers are put together.

4 0

3 years ago