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2 years ago

In a shop, a TV has a normal price of £500

Mathematics

1 answer:

andrey2020 [161]2 years ago

3 0

Answer:

400> 360

Step-by-step explanation:

1/10 X 500 = 50

500 - 50 = 450

10% = 450/ 10 = 45

20% = 45 x 2 = 90

450 - 90 = 360

Chris does have enough 400> 360

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14/15 divided by 7/5

Charra [1.4K]

9514 1404 393

Answer:

2/3

Step-by-step explanation:

There are a couple of different ways that division of fractions can be done.

1) "invert and multiply"

$\dfrac{14}{15}\div\dfrac{7}{5}=\dfrac{14}{15}\times\dfrac{5}{7}\\\\=\dfrac{14}{7}\times\dfrac{5}{15}=\boxed{\dfrac{2}{3}}$

2) use the numerators when the denominators are the same

$\dfrac{14}{15}\div\dfrac{7}{5}=\dfrac{14}{15}\div\dfrac{21}{15}\\\\=\dfrac{14}{21}=\boxed{\dfrac{2}{3}}$

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3 years ago

What is 2.4×10 to the seventh power

kotykmax [81]

This is easy once you look at it you just have to move the decimal 7 places and you'll get 24,000,000

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3 years ago

Use De Moivre’s Theorem to compute the following: <img src="https://tex.z-dn.net/?f=%5B3%28cos27%2Bisin27%29%7D%5E5" id="TexForm

zhannawk [14.2K]

Hello:
<span>Use De Moivre’s Theorem :
</span>(3(cos27 +isin27)^5 = 3^5( cos(27 × 5) +isin(27 × 5))
= 3^5 ( cos(135)+i sin(135))
= 3^5(-√2/2+i √2/2)
because : cos(135) = -√2/2 and sin(135) = √2/2
(3(cos27 +isin27)^5 = (- 3^5√2/2)+ i ( 3^5√2/2) ...(form : a+ib when
a= (- 3^5√2/2) and b = ( 3^5√2/2)

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3 years ago

A medicine is known to decompose and become ineffective if its temperature ever reaches 103 degrees Fahrenheit or more. Write an

Ludmilka [50]

Answer: Interval = [103,∞)

Explanation :

A medicine become ineffective if its temperature ever reaches 103 degrees Fahrenheit or more .

So, Interval becomes [103,∞)

i.e. semi-open or semi-closed interval as it includes $103\textdegree$

So, we used closed brackets i.e. square brackets and

For '∞' we always use open brackets only.

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3 years ago

-5(x+6)=15 what is the answer?? will give brainliest

goldenfox [79]

Answer:

the answer will be x=-9

Step-by-step explanation:

-5(x+6)=15

-5x-30=15

-5x=15+30

-5x=45

×=-9

6 0

3 years ago

Read 2 more answers