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3 years ago

QUESTION #4 PLEASE HURRY

Mathematics

1 answer:

krok68 [10]3 years ago

4 0

Answer:

A, I had to look for a second

Step-by-step explanation:

ACD and CEB are equal and CDE is not equal to either of them

so the right answer is A

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Find the values of x and y

IrinaVladis [17]

The value of y=29
the value of x=61

7 0

4 years ago

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An electrician needs 14/3 rolls of electrical wire to wire each room in a house. How many rooms can he wire if he has 28/3 rolls

miv72 [106K]

Answer:

2 rooms

Step-by-step explanation:

To solve this, we need to figure out how many 14/3s go into 28/3. We know this because each room needs 14/3 rolls of wire, and we need to figure out how many rooms the electrician needs to wire with 28/3 rolls.

To find how many 14/3s go into 28/3, we can divide 28/3 by 14/3 to get

(28/3) / (14/3)

= (28/3) * (3/14)

= (28/14)

= 2

2 rooms is our answer

3 0

3 years ago

Which of the following exponential regression equation best fits the data shown below. Please help ASAP. ☺️

stepladder [879]

Answer:

Option D [ $y=6.61\,*\,1.55^x$ ] in the list of possible answers

Step-by-step explanation:

For this problem you are supposed to use a calculator that allows you to do an exponential regression. There are many tools that can help you with that, depending on what your instructors has assigned for your class.

I am showing you the results of a graphing tool I use, and which after entering the x-values and the y-values in independent "List" forms, when I request the exponential regression to fit the data, I get what you can see in the attached image.

Notice that the exponential of best fit with my calculator comes in the form:

$y=A\,e^{k\, x}$

with optimized parameters:

$A \approx 6.6114\,\,\,and\,\,\, k=0.4378321$

Notice as well that since:

$e^{0.4378321} \approx 1.5490$

the exponential best fit can also be written:

$y=6.611403\,\,*\,e^{0.4378321\, x}=6.611403\,*\,1.549^{\,x}$

and this expression is very close to the last option shown in your list of possible answers

8 0

3 years ago

Use the given conditions to write an equation for the line in point-slope form. Passing through (2,-3) with x-intercept = -2

goldfiish [28.3K]

The equation for line is $y=-\frac{3}{4} x-\frac{3}{2}$

Explanation:

It is given that the line passes through the point $(2,-3)$ with x-intercept = -2

The x intercept is the value of x when y = 0.

Thus, it can be written in coordinate as $(-2,0)$

Now, we shall determine the slope using the points $(2,-3)$ and $(-2,0)$

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting, we get,

$m=\frac{0+3}{-2-2} \\m=-\frac{3}{4}$

Thus, the slope is $m=-\frac{3}{4}$

Now, we shall substitute the point $(2,-3)$ and slope $m=-\frac{3}{4}$ in the point-slope formula $y-y_1=m(x-x_1)$ , we get,

$y+3=-\frac{3}{4} (x-2)$

Multiplying both sides by 4, we get,

$4y+12=-3x+6$

Subtracting both sides by 12,

$4y=-3x-6$

Dividing both sides by 4, we get,

$y=-\frac{3}{4} x-\frac{3}{2}$

Thus, the equation of the line is $y=-\frac{3}{4} x-\frac{3}{2}$

4 0

4 years ago

You are baking chocolate chip cookies. One batch makes 4 dozen big cookies. The recipe calls for 3/4 cup brown sugar. How many c

Over [174]

Greetings!

11/4=2.75
To make 11 dozen cookies, you would need to make 2.75 times the recipe.
Therefore, you will need 2.75 times the brown sugar:

$3/4*2.75$
$=3/4*2 \frac{3}{4}$
Convert the mixed fraction into an improper fraction.
$=3/4*11/4$
$=33/16$
Convert back into a mixed fraction.
$=2\frac{1}{16}$

You would need 2 1/6 cups of brown sugar to make 11 dozen cookies.

Hope this helps.
-Benjamin

3 0

3 years ago

Read 2 more answers