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Nikitich [7]
3 years ago
13

-9 *-9 = What is the answer to this question

Mathematics
2 answers:
Wewaii [24]3 years ago
7 0

Answer: 81

Remember - negative x negative = positive

-9 × -9 = 81, because 9 x 9 = 81.

The answer is 91. Best of Regards!

poizon [28]3 years ago
3 0

Answer:

+81

Step-by-step explanation:

neg times a neg = a positive

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Answer:

  1.  b. The common difference is 0.39

  2.  no good answer (Zach's method is exponential; Victoria's is linear)

Step-by-step explanation:

1. The differences in mileage are ...

  24.39 -24 = 0.39

  24.78 -24.39 = 0.39

  25.17 -24.78 = 0.39

The common difference is 0.39.

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2. Zach's monthly times are ...

  10, 20, 40, 80

The differences are ...

  10, 20, 40

The ratios are ...

  20/10 = 40/20 = 80/40 = 2

Zach's times have a common ratio, so are exponential.

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Victoria's monthly times are ...

  35, 50, 65, 80

The differences are ...

  15, 15, 15

Victoria's times have a common difference, so are linear.

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The choices are ...

  a. both exponential; common factor . . . . correct for Zach; not for Victoria

  b. Zach's is linear (has equal factor) . . . incorrect

  c. both exponential; common difference . . . incorrect

  d. Victoria's is linear . . . . correct for Victoria

Choice D describes Victoria's method. Choice A is correct regarding Zach's method, but incorrect regarding Victoria's.

Choices B and C are not self-consistent, so are incorrect on their face.

There is no good choice.

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Answer:

a. 1/2 + 9/10 = 5/10+9/10 = 14/10 = 7/5 = 1 2/5 meters or ribbon

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Step-by-step explanation:

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2 years ago
I need to understand question 14 and 15 and the last one cut off for tens in one
sp2606 [1]

                                                 Question # 14

Given the numbers

10     11     12     13     14     15     16     17     18     19     20

Let 'x' be the number

The condition breakdown:

I am less than 20.

  • So the number 'x' must be less than 20 i.e. x < 20

I am more than 13.

  • So the number 'x' must be greater than 13 i.e. x > 13

I am less than 17.

  • So the number 'x' must be less than 17 i.e. x < 17

Finally:

I am 4 more than 12

i.e. 12+4 = 16

Thus, the number is x = 16

                                               Question # 15

Part a)

Given the numbers

10     11     12     13     14     15     16     17     18     19     20

Let 'x' be the number

The condition breakdown:

I am more than 10.

  • x > 10

I am less than 20.

  • x < 20

I am more than 12.

  • x > 12

I am less than 15.

  • x < 15

As the numbers left after all the conditions are fulfilled are 13 and 14.

  • But the last condition is, of the numbers that left, the number is greater than all the remaining numbers.

So, from the remaining number 13 and 14;

14 > 13

Thus, the number x = 14

Part b)

Drawing the number 14 in the place value:

          Chart

Tens                Ones

1                         4

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3 years ago
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