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2 years ago

Find the domain and range of the relation:

Mathematics

1 answer:

Novay_Z [31]2 years ago

6 0

Answer:

I am not getting what is this

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Verify a(b-c)=ab-ac for a=1.6;b=1/-2;& c=-5/-7

harina [27]

Given:

$a=1.6,b=\dfrac{1}{-2},c=\dfrac{-5}{-7}$

To verify:

$a(b-c)=ab-ac$ for the given values.

Solution:

We have,

$a=1.6,b=\dfrac{1}{-2},c=\dfrac{-5}{-7}$

We need to verify $a(b-c)=ab-ac$ .

Taking left hand side, we get

$a(b-c)=1.6\left(\dfrac{1}{-2}-\dfrac{-5}{-7}\right)$

$a(b-c)=1.6\left(-\dfrac{1}{2}-\dfrac{5}{7}\right)$

Taking LCM, we get

$a(b-c)=1.6\left(\dfrac{-7-10}{14}\right)$

$a(b-c)=\dfrac{16}{10}\left(\dfrac{-17}{14}\right)$

$a(b-c)=\dfrac{8}{5}\left(\dfrac{-17}{14}\right)$

$a(b-c)=-\dfrac{68}{35}\right)$

Taking right hand side, we get

$ab-ac=1.6\times \dfrac{1}{-2}-1.6\times \dfrac{-5}{-7}$

$ab-ac=-\dfrac{16}{20}-\dfrac{8}{7}$

$ab-ac=-\dfrac{4}{5}-\dfrac{8}{7}$

Taking LCM, we get

$ab-ac=\dfrac{-28-40}{35}$

$ab-ac=\dfrac{-68}{35}$

Now,

$LHS=RHS$

Hence proved.

7 0

2 years ago

If (NN)^3 = 8518N, what digit does N represent?

sveticcg [70]

Answer:

Step-by-step explanation:

I am going to solve this by trial and error:

(A) 1

Is: $(11)^{3} = 85181$ ?

$(11)^3 = 1331$

So 1 is not the digit of N.

(B) 2

Is: $(22)^{3} = 85182$ ?

$22^3 = 10648$

So 2 is not the digit of N.

(C) 4

Is: $(44)^{3} = 85184$ ?

$44^3 = 85184$

Correct, so the answer is c.

(D) 5

$55^3 = 166375 \neq 85185$

(E) 6

$66^3 = 287496 \neq 85186$

7 0

3 years ago

Out of 25 students in Mrs.Green’s class, 14 have a pet.What precent of the students in Mrs.Green’s class have a pet

Marina CMI [18]

Answer:

56%

Step-by-step explanation:

14/25=0.56

.56 as a percent is 56%

hope this helps :)

5 0

3 years ago

Read 2 more answers

I need help with these questions

Gnesinka [82]

6. n=14
7. 3 hours
8. t=13

5 0

3 years ago

Read 2 more answers

Which subtraction equation does the number line model show?

masya89 [10]

Answer:

Yes, C is the correct answer

Step-by-step explanation:

Just look where the red arrow starts and where the blue arrows ends

5 0

3 years ago