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3 years ago

What is the result when the number 90 is increased by 50%?

Mathematics

2 answers:

Kryger [21]3 years ago

7 0

135 think of if you had 90 dollars and you increased it by 50% you would then have $135

Arada [10]3 years ago

6 0

$135 because half of 90 is 45 so you add 45 to 90

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Which number is less than 2.167 × 10?

Xelga [282]

Answer: A
Step-by-step explanation
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1.1x10^6
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1 year ago

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frutty [35]

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How many terms are there in 37,38,39,40...,437

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Step-by-step explanation:

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3 years ago

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Solve the following system of equations by substitution.<br> y=-1<br> 5x + 7y = -2

Nady [450]

Answer:

(1,-1)

Step-by-step explanation:

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3 years ago

After reading 80% of her e-mails in her inbox, Danette still has M unread e-mails. Which of the following expressions could repr

sergey [27]

Answer:

(Choice A) 5M

Step-by-step explanation:

Let total no. of e-mails in inbox be x

Since she read 80 % of mails i.e 80 % of x

⇒ $80\% \times x$

⇒ $\frac{80}{100}\times x$

⇒ $0.8 x$

So, she read 0.8x e-mails.

So, remaining email = total e-mails - read e-mails

$=x-0.8x$

Since we are given that Danette still has M unread e-mails.

⇒ $M=x-0.8x$

⇒ $M=x(1-0.8)$

⇒ $M=x\times 0.2$

⇒ $\frac{M}{0.2}=x$

⇒ $\frac{10M}{2}=x$

⇒ $5M=x$

Thus the expression represent the number of e-mails Danette had in her inbox before she started reading is 5M.

Hence Choice A is correct.

7 0

3 years ago