Question

9 Find the integer which gives (-67) when multiplied by(+1)
10. Find the integer which gives (+35) when multiplied by (-1)
11. An integer when divided by (-2) gives 42. Find the integer
12. A cooling machine requires that room temperature to be lowered from 50°C at the rate of 5°C every
What will be the room temperature after 8 hours after process begins?
Mathematics-7
10​

Answer 1

Step-by-step explanation:

9...

⇒ Find the integer which gives (-67) when multiplied by (+1)

Let the number be x.

So the equation will be :

 x * 1 = -67

x = -67/1

x = -67

Verification>>>

=> To check your answer put the answer in the place of x

=> -67 * 1= -67

So the answer is correct

---------------------------

10...

Find the integer which gives (+35) when multiplied by (-1)

Let the number be x.

So the equation will be :

 x * (-1) = 35

x = 35/-1

x = -35

Verification>>>

=> To check your answer put the answer in the place of x

=> -35 * -1 = 35

So the answer is correct

---------------------------

11...

An integer when divided by (-2) gives 42.

Let the number be x.

x / -2 = 42

x = 42 * -2

x = -84

Verification>>>

=> To check your answer put the answer in the place of x

=> -84 / -2 = +42

So the answer is correct

---------------------------

12...Question is not clear dear.

Hope this helps you...

Plzz mark it as brainlist

Answer 2

Answer:

9. it is -67 itself .....+1×-67=-67

10. we know when w negative no. multiply they give their product as postivie so.

-1×x =35

on transposing we get

x =-35

11. x÷-2=42

x=42×-2

x=-84

12.the Ques is not clear....if it is 5 degree per hour than it will be 50-5×8=10 degree

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