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rewona [7]
3 years ago
15

NEED HELP PLEASE!!!!!

Mathematics
1 answer:
Ghella [55]3 years ago
6 0
1)  14/20=21/25+x
      x=5
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Erik and Nita are playing a game with numbers. In the game, they each think of a random number from zero to 20. If the differenc
klasskru [66]
Given:
Choose a number between 0 and 20.
If the difference is less than 10 then Eric wins.
Let us x is Eric's number.  0 <u><</u> x <u><</u> 20
If Eric wins. |x -7| < 10
|x-7| < 10 → -10 < x-7 < 10 → -10 + 7 < x - 7 + 7 < 10 + 7 → -3 < x < 17

Taking into account that the number must be given between 0 and 20.
0 <u><</u> x <u><</u> 20
-3 < x < 17

→ 0 < x < 16


7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIEST THANKS AND 5 STARS FOR CORRECT ANSWER Desmond ran a lemonade stand in front of his house for the fans walki
Fiesta28 [93]

Answer:

56

Step-by-step explanation:

First, convert the 70% so that we can use it with the 80 cups. To do this, convert the percent to a decimal by moving the decimal 2 spaces to the left:

70% → 70.00 → 0.70 → 0.7

70% percent can be seen as 0.7. Multiply this by 80:

80*0.7=56

So, 70% of 80 is 56. Desmond sold 56 cups on the second Saturday.

:Done

7 0
3 years ago
Sweet t purchased a new pair of jeans to wear at the battle of the bands on sale at 40% off.He saved $20 what was his regular pr
Oliga [24]
If he got the jeans for 40% off he paid 60% of the cost for the jeans. With that you can setup an equation.

20 is 60% of what number

is signifies equals and of signifies multiplication

20 = 0.6*x
x = 20/.6
x = 33.33

The regular price of the jeans is $33.33
8 0
3 years ago
11) the difference between the product of 4 and a<br><br> number and the square of the number
marta [7]

Answer:

= 4x-x^2\\\\

Step-by-step explanation:

Let the number be x;

The product of 4 and the number will be;

= 4 * x\\\\= 4x

The the square of the number is given as;

= x^2\\

Taking the difference of both expressions above;

= 4x-x^2\\\\

Factor out the common term:

= x(4-x)\\\\

Hence the difference between the product of 4 and a  number and the square of the number is = 4x-x^2\\\\

6 0
3 years ago
Ratios equivalent to 1/2
Blizzard [7]
The answer is 1:2. all you have to do is add the dots for example 4/5 would be 4:5
7 0
3 years ago
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