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elena55 [62]
3 years ago
9

Evulate a^2 - b^2 if a=4 and b= -2

Mathematics
1 answer:
Helen [10]3 years ago
8 0

Answer:

20

Step-by-step explanation:

4^2 = 16

-2^2 =-4

16 -(-4) =20

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Oksanka [162]
7 is in the hundredths place.
There are 7 one hundredths.
7 0
3 years ago
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Find the value of x. Then find the measure of each labeled angle.
adell [148]

Answer:

x = 111

Step-by-step explanation:

x + x - 42  = 180     {Lines are parallel. So, they are supplementary}

2x - 42 = 180  

Add 42 to both sides

2x - 42 + 42 = 180 + 42

               2x = 222          {Divide both sides by 2}

                 x = 222/2

x = 111

4 0
3 years ago
Exhibit a population of ten integers having mean=20 and variance=4
Alla [95]

exhibit population for ten integers is 15,19,19,20,20,20,21,22,22,22 mean is 20 variance is 4

Step-by-step explanation:

  • Mean is helps in finding the mid point of the data.
  • Variance is the variability of data it was here.
  • In order to get the data straight the combination of 4 was required.
  • 4 is variance one data set was 19 other had to be 22.
  • As mean is 20 three means had to be 20.
  • from mean 20 4 is greater then 20 and 3 is less then 20.
  • 15 being the lowest it compensated the variance to 4.
  • Mathematically there are many ways to do this using function.
  • This is to be found out at a traditional method.
  • Reducing or increase the number as it was integers.
8 0
3 years ago
A jumbo size 90 ounces drink at a certain gas station has 890-calories. How many calories are there in a 14 ounce drink
Degger [83]

The number of calories in 14-ounces drink is 138.44

Step-by-step explanation:

Given

Amount of jumbo size drink = 90 ounces

Calories in jumbo size drink = 890-calories

Quantity of smaller drink = 14 ounces

We will use the proportions to solve the questions

ounces: calories::ounces:calories

Let x be the number of calories in the smaller drink

90: 890::14:x\\\frac{90}{890} = \frac{14}{x}\\x = \frac{890*14}{90}\\x = \frac{12460}{90}\\x = 138.44

The number of calories in 14-ounces drink is 138.44

Keywords: Fractions, ratios

Learn more about fractions at:

  • brainly.com/question/6108628
  • brainly.com/question/605571

#LearnwithBrainly

3 0
3 years ago
A chemistry experiment needed 12.45 grams of chemical to produce one liter of a gas. If Zoe wanted 24 liters of gas, how many ki
muminat
0.2988kg of the chemical will be needed.
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2 years ago
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