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Igoryamba
4 years ago
5

Erica had both chocolate cake and coconut cake at her birthday party. There were 15 people at the party, and 60 of them picked c

hocolate cake. How many people picked chocolate cake? Explain step by step how to solve the problem.
Mathematics
1 answer:
Ahat [919]4 years ago
6 0
If you just divide 60 and 15 you will get 4. So 4 is you answer
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Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 8x and y = 2x + 2 intersect are the so
OleMash [197]

The point of intersection of two given equations is (0.333, 2.667).

Given that, equation with two variables are y = 8x and y = 2x + 2.

The given equations will intersect at some point where y is the same for both equations.

When you replace y in y = 2x + 2 with y = 8x, we get 8x = 2x + 2.

So, the solution of 8x = 2x+2 will satisfy both equations.

Now, we need to find the solutions to take the integer values of x between -3 and 3.

That is,

x = -3 , then 8(-3) = 2(-3) +2⇒-24 = -6+2

⇒-12 = -4    False.

similarly, for x = -2

8(-2) = 2(-2)+2

⇒-16 = -2   False

For, x = -1

8(-1) = 2(-1)+2

⇒-8= 0   False

For, x = 0

8(0) = 2(0)+2

⇒0= 2   False

For, x = 1

8(1) = 2(1)+2

⇒8= 4   False

For, x = 2

8(2) = 2(2)+2

⇒16 = 6   False

For, x = 3

8(3) = 2(3)+2

⇒24 = 8   False

Therefore, there is no solution to 8x = 2x +2 for the integers values of x between -3 and 3.

The equations can be solved graphically by plotting the two given functions on a coordinate plane and identifying the point of intersection of the two graphs.

The point of intersection is the values of the variables which satisfy both equations at a particular point.

Hence, you can see the graph as shown below, the point of intersection is (0.333, 2.667).

To learn more about the graphical representation of equation visit:

brainly.com/question/12804458.

#SPJ1

3 0
2 years ago
A random sample of 10 chocolate energy bars of a certain brand has, on average, 230 calories per bar, with a standard deviation
Troyanec [42]

Answer:

The confidence interval for the true mean calorie content is

215

Step-by-step explanation:

In this problem we know the mean and standard deviation fo the sample, so we can compute the CI like this:

\bar{x}-t*s/\sqrt{n}< \mu

We need to determine t for 10-1=9 degrees of freedom and 99% confidence level. We look up in the t-table and the value for t is 3.2498.

Then we can calculate the limits of the CI:

\bar{x}-t*s/\sqrt{n}< \mu

5 0
4 years ago
PLS HELP!! WILL GIVE BRAINLIEST!!
Sergeeva-Olga [200]

Answer:

you do -4 + 54 ÷2 = -29

5 0
2 years ago
Please hurry!! Select all that apply.<br> To write a percent as a decimal..
igomit [66]

Answer:

<h2>Divide by 100</h2><h2>and</h2><h2>Move the decimal point two places to the left</h2>

Step-by-step explanation:

__________________________________________________________

According to <em>Calculator Soup,</em>

<em>Divide a percent by 100 and remove the percent sign to convert from a percent to a decimal. The shortcut way to convert from a percentage to a decimal is by removing the percent sign and moving the decimal point 2 places to the left. Express 50% as a decimal. "Percent" means "per 100" or "over 100".</em>

<em>__________________________________________________________</em>

<em>The answers are Divide by 100 and Move the decimal point two places to the left.</em>

<em>__________________________________________________________</em>

<em>Hope this helps! <3</em>

<em>__________________________________________________________</em>

5 0
3 years ago
Please help me. Thank you so much
Alchen [17]

Answer:

x = 10

Step-by-step explanation:

5 0
3 years ago
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