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Felicia Kuphal
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∙ 6y agoThe numbers needed are 3 and -10
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What two factors of 7 add up to -30?
-23
What two numbers multiply to give you -30 but add to give you 7?
-23
What is a trick for multiplying by the 12s?
One trick for multiplying by 12 is to multiply the number by 10 and then add two times the number. For example, if you want to multiply 7 by 12, first multiply 7 by 10 to get 70, and then add 7*2=14 to get 84.
What does 7 x 14 plus 1 mean?
It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.It means you need to multiply 7 by 14 and then add 1 to the answer.
How can you multiply numbers by eleven mentally?
Multiply by ten and add one of the number. 7 x 11 = 70 + 7 23 x 11 = 230 + 23 = 253.
When you multiply a number by 7 and add 8 to the answer you get 50 what is the number?
6
What two factors of 7 add up to -30?
-23
What numbers multiply to get 30 but add to get 7?
a+b=-7 rearrange: b= -a-7=-(a+7) substitute into: ab=30 -a(a+7)=30 -a^2-7a-30=0 a^2+7a+30=0 x = complex number, therefore there are no two Real numbers that exist that satisfy these two conditions.
What is the sum of 8 and 7 doubled?
its 30 because you add 8 and 7 then add it by itself or multiply it by 2**.**
How do you work out 70 percent of something?
multiply the number by .7, that is 70 % of that number
What two numbers multiply together to equal -9 and add together to equal -8?
-17
How does 9 3 and 7 make 30?
One way is to multiply 3 and 7 in order to get 21 and then add 9 to 21 in order to get 30.
What two numbers multiply to give you -30 but add to give you 7?
-23
What is a trick for multiplying by the 12s?
One trick for multiplying by 12 is to multiply the number by 10 and then add two times the number. For example, if you want to multiply 7 by 12, first multiply 7 by 10 to get 70, and then add 7*2=14 to get 84.
If you start with a number add 5 then multiply by 7 the result is 133. What was the original number?
The original number is 14.
What does number multiply by -84 and add to 5?
-79
What number multiply it give you 1 and add give you 8?
9
