Estimate the product of 28.21 times 8.02

natka813 [3]

$\sqrt{b+3}=a$

b = (a - 3)²

Our aim is to get a to be alone

1) First we get rid of what's in the brackets. So we subtracts each side by 3. Of course, the opposite of subtracting is adding:

b+3 = a²

2) Now we get rid of the squared in a. Opposite of squaring is square rooting.

$\sqrt{b+3} =a$

3) There we have it. a is now by itself. We can test if we're right by substituting.

Lets make a=2

b=(a-3)²

b= (2-3)²

b= 1

NOW:

$\sqrt{b+3} =a$

$\sqrt{1+3} =2$

4 0

3 years ago

True or False ? Can you represent the distance of an object underground using negative numbers?

ivanzaharov [21]

Answer:

true

Step-by-step explanation: below sea level is negative, above sea level is positive.

6 0

3 years ago

In 2017 a rock band held a concert in Atlanta gerorgia The attendance was 53,500 however in 2018 they returned to Atlanta but th

Leno4ka [110]

Can anyone help me with my questions

4 0

3 years ago

What would this equation be in vertex form? Show all steps please! :) y2 + 16x - 4y = -20

Anna71 [15]

Answer:

Liquid R has a mass of of 1 kg at a temperature of 30°c kept in a refrigerator to freeze . Given the specific heat capacity is 300 J kg-¹ °c-1 and the freezing point is 4°c . Calculate the heat release by liquid R.

Step-by-step explanation:

Liquid R has a mass of of 1 kg at a temperature of 30°c kept in a refrigerator to freeze . Given the specific heat capacity is 300 J kg-¹ °c-1 and the freezing point is 4°c . Calculate the heat release by liquid R.

5 0

3 years ago

Mrs. Dimitri purchased a case of yogurt cups. Out of every 10 yogurt cups, 6 are strawberry.

emmasim [6.3K]

Answer:

1) The fraction of yogurt cups that are strawberry is 18/30. (True)

2) There are a total of 60 strawberry yogurt cups. (False)

3) 60% of the yogurt cups are strawberry. (True)

4) 30% of the yogurt cups are NOT strawberry. (False)

Step-by-step explanation

Total number of yogurt cups are = 30

for every 10, 6 are strawberry

thats is for the whole 30 cups total number of strawberries are = 18

1) The fraction of yogurt cups that are strawberry,

that is the fraction of the total number of strawberries over the total number of cups which is 18/30

2) There are a total of 60 strawberry yogurt cups,

the total number of yogurt cups is 30 while that of strawberry is 18

3) 60% of the yogurt cups are strawberry,

which is 18/30 * 100% = 60%

4) 30% of the yogurt cups are NOT strawberry,

percentage of the remaining cups will be 100% - 60% = 40%

8 0

3 years ago