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2 years ago

Can anyone help me please?

Mathematics

1 answer:

shusha [124]2 years ago

7 0

Answer:

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Step-by-step explanation:

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9213x5 is a multiple of 9 find the value of x

Lina20 [59]

Answer:

$\boxed{\textsf{The value of x is \textbf{7}.}}$

Step-by-step explanation:

Given that 9213x5 is a multiple of 9 and we need to find out the value of x .So the rule for divisibility for 9 is :-

Test for Divisibility by 9 :-

A number is divisible by 9 if the sum of the digits is divisible by 9 .

Here the sum of the digits is :-

$\sf\implies Sum_{(digits)}= 9+2+1+3+x+5=\pink{20+x}$

Now here to make 20 +x divisible by 9 is should be equal to 27 since 27 is the nearest smallest multiple of 9 .

$\sf\implies 20 + x = 27 \\\\\sf\implies x = 27-20 \\\\\sf\implies\boxed{\pink{\sf x = 7 }}$

4 0

3 years ago

I think it’s the third one

Zigmanuir [339]

It’s third to the one

7 0

3 years ago

Read 2 more answers

Integral of cosecx dx =log|tanx/2| show that.

Pie

ANSWER:

Let t = logtan[x/2]

⇒dt = 1/ tan[x/2] * sec² x/2 × ½ dx

⇒dt = 1/2 cos² x/2 × cot x/2dx

⇒dt = 1/2 * 1/ cos² x/2 × cosx/2 / sin x/2 dx

⇒dt = 1/2 cosx/2 / sin x/2 dx

⇒dt = 1/sinxdx

⇒dt = cosecxdx

Putting it in the integration we get,

∫cosecx / log tan(x/2)dx

= ∫dt/t

= log∣t∣+c

= log∣logtan x/2∣+c where t = logtan x/2

7 0

3 years ago

PLS ANSWER HELP ... I will give 15 points

serg [7]

Answer

I believe its 2 and 3

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Tom and Jerry leave from the same place in opposite directions. Tom drives 38mph. Jerry drives 50mph. In how many hours are they

devlian [24]

Answer:

Both Tom and Jerry will apart 176 miles in 2 hours .

Step-by-step explanation:

Given as:

Tom and Jerry moves in opposite direction

The speed of Tom = 38 mph

The speed of Jerry = 50 mph

Let The distance cover by Tom = x mile

The distance cover by Tom = ( 176 - x ) miles

Time taken by both are same = T hour

$\textrm(Time) = \dfrac{\textrm(Distance)}{\textrm(Speed)}$

Or, Time taken by Tom

T = $\frac{x}{38}$ ... 1

∴ x = 38 T

And Time taken by Jerry

$\textrm(T) = \dfrac{\textrm(Distance)}{\textrm(Speed)}$

Or, T = $\frac{176 - x}{50}$

So , put the value of T from 1

$\frac{x}{38}$ = $\frac{176 - x}{50}$

Or, 50 × x = ( 176 - x ) × 38

So 50 x + 38 x = 6688

Or, 88 x = 6688

∴ x = $\frac{6688}{88}$ = 76 mile

So, From, eq 1

T = $\frac{x}{38}$

or, T = $\frac{76}{38}$ = 2 hours

Hence both Tom and Jerry will apart 176 miles in 2 hours . Answer

7 0

3 years ago