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noname [10]
3 years ago
11

The sum of 2 numbers is 22. 2 times the first number is 10 times the second. what are the numbers

Mathematics
1 answer:
gogolik [260]3 years ago
5 0

Answer:

Step-by-step explanation:

Set the two unknown numbers to X and Y.

X + Y = 22

2X = 10Y

Rewrite the second equation as:  X = 5Y

Now use this in the first equation:   6Y=22

Y = 3.67  [3 2/3]

X = 18.33 [18 1/3]

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

3 2/3 + 18 1/3 = 22, and

2*(18 1/3) = 10*(3 2/3)

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9. Determine if x + 1 is a factor of x ^ 4 - 4x ^ 2 - 4x - 1 Justify your answer.
Elden [556K]

Answer:

No

Step-by-step explanation:

x + 1 is not a factor of the polynomial because the remainder is 2 and not 0

5 0
2 years ago
Evaluate v(x)=12-2x-5 when x=-2,0, and 5 .<br><br> v(-2)= <br><br> v(0)= <br><br> v(5)=
Vaselesa [24]

Step-by-step explanation:

v(-2)= 12-2x(-2)-5

=12+4-5

=16-5

=11

v(0)= 12-2x0-5

= 12-0-5

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=7

v(5)= 12-2x5-5

= 12-10-5

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<em><u>Hope </u></em><em><u>it </u></em><em><u>helps </u></em>

6 0
1 year ago
terry,sasha and harry each chose a number. terry's number is ten times as much as sasha's. harry's number is 1 over 10 of sasha'
PilotLPTM [1.2K]
Harry's number is 0.04, and Terry's number is 4.

Hope this helps!
8 0
2 years ago
Answer must be in fraction form
Damm [24]

Answer:

-7/18

Step-by-step explanation:

To multiply fractions, you just multiply the top number by the top number and the bottom number by the bottom number. Also, you have to watch the sign.

In this case, we have a positive fraction multiplied by a negative fraction, meaning that our answer must be negative.

So we have- 2x7 / 4x9.

This is simplified to be- 14/36, or 7/18.

However, the answer is actually -7/18, since the number must be negative.

Let me know if this helps.

8 0
2 years ago
If a recipe requires 400 grams of potatoes for four people, how many kilograms would be required for 12 people?
Tasya [4]

Answer:

1.2 kg

Step-by-step explanation:

We need 400 grams of potatoes for 4 people. That means each person will require 400 / 4 = 100 grams.

Now, we have 12 people, so the total number of grams needed will be:

(100 g/person) * (12 people) = 1200 grams

However, we want the answer in kilograms. There are 1000 grams in a kilogram, so divide 1200 by 1000:

1200 / 1000 = 1.2 kg

The answer is 1.2 kg.

6 0
2 years ago
Read 2 more answers
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