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3 years ago

Explain how to determine if the two expressions are equivalent using x = 6 and x = 2.

1 answer:

3 0

You substitute the variables with the number into the equations and set the equations equal to each other and solve ( systems of equations )

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jimmy has seven times as many dimes as nickels. their value is $3.75. how many nickels does he have? 35 15 5

inna [77]

Let the nickels be = x. Value = 5*x = 5x cents
Dimes = 7x, Value = 10*7x = 70x cents

Total value = $3.75 = 375cents

5x + 70x = 375

75x = 375

x = 375/75

x = 5

Number of Nickels = x Number of Nickels = 5

4 0

4 years ago

Read 2 more answers

Kim says the amount of flour in the recipe can be expressed as a fraction. IS she correct?

aev [14]

Yes she is correct it can be expressed as an fraction

5 0

3 years ago

Jaime finished analyzing a set of data with an explanatory variable x and a response variable y. He finds that the mean and stan

malfutka [58]

Answer:

The slope is m=2.145.

The y-intercept is b=-1.33.

Step-by-step explanation:

We have this data:

- The mean and standard deviation for x are 5.43 and 1.12, respectively.

- The mean and standard deviation for y are 10.32 and 2.69, respectively.

- The correlation is 0.893.

We have to calculate the slope and the y-intercept of the least-squares line.

With the given data, we can calculate the slope m as:

$m=r\;\dfrac{s_y}{s_x}=0.893\;\dfrac{2.69}{1.12}=2.145$

Then, the y-intercept is calculated as:

$b=\bar y-m\cdot \bar x=10.32-2.145\cdot 5.43=10.32-11.65=-1.33$

7 0

3 years ago

PLEASE I NED SOMEONE TO HELP ME WITH THIS QUESTION

tigry1 [53]

Answer:

a) 12 points

b) A: 3 questions; B: 2 questions

Step-by-step explanation:

The least number of points each section may have is the least common multiple of 4 and 6. That is a number that will have all of the factors of 4 and all of the factors of 6: 2×2×3 = 12.

Each part is worth 12 points.

Part A has 12/4 = 3 questions.

Part B has 12/6 = 2 questions.

8 0

2 years ago

What is the volume of the figure below?

Alenkasestr [34]

180 cm goodluck and keep your head up!

3 0

3 years ago

Read 2 more answers