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3 years ago

Please help me idk this ???

Mathematics

2 answers:

nydimaria [60]3 years ago

7 0

Answer:

Step-by-step explanation:

16/100 = x / 400

Cross multiply:-

100x = 16*400

x = 6400 / 100

= 64

Kamila [148]3 years ago

5 0

The answer is 64 because you multiplied 100 by 400 so you would have to do the same thing with 16 so 16 multiplied by 4 is 64

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12 is 90% of what number?<br><br><br> with steps

a_sh-v [17]

Answer:

<h3><u>Let's</u><u> </u><u>understand the concept</u><u>:</u><u>-</u></h3>

Here 12 is 90% of a number.
So we can say that 90% of That number is 12 .
In this way we can get the the number

<h3><u>Solution</u><u>:</u><u>-</u></h3>

Let,

the number=x

<h3>According to the question ,</h3>

${:}\longrightarrow$ $\sf 90\% \:of \;x=12$

We know 90%=90/100
so add it

${:}\longrightarrow$ $\sf {\dfrac {90}{100}}\times x=12$

${:}\longrightarrow$ $\sf {\dfrac {90x}{100}}=12$

Now use cross multiplication method

${:}\longrightarrow$ $\sf 90x=12\times 100$

${:}\longrightarrow$ $\sf 90x=1200$

Now interchange sides .

${:}\longrightarrow$ $\sf x={\dfrac {1200}{90}}$

${:}\longrightarrow$ $\sf x={\dfrac {200}{15}}$

Answer will come in decimals so we take approximate value.

${:}\longrightarrow$ $\sf x=13.3$

${:}\longrightarrow$ $\sf x=approximately \:13$

$\therefore$ The number is 13.

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2 years ago

Mrs. Whatsit spends a lot of time sleeping. Last week she spent 159,547 seconds sleeping. This week she slept some more. If she

gulaghasi [49]

Answer:

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Step-by-step explanation:

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Answer: False.

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alekssr [168]

Answer:

28π is the circumference

Step-by-step explanation:

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3 years ago

3. A man needed money for college. He borrowed $6,000 at 14% simple interest per year. If he paid $420 interest, what was the du

9966 [12]

Answer: half year

Step-by-step explanation:

The formula to find the simple interest is given by :-

$I=Prt$ , , where P is the principal amount , r is the rate of interest and t is the time in year.

Given : I=420 ; r=14%=0.14 and P =$6000

Then, we have the following equation :-

$420=6000\times0.14 \times t\\\\\Rightarrow\ t=\dfrac{420}{6000\times0.14}=0.5$

It means the duration of the loan is half year .

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3 years ago