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Over [174]
3 years ago
7

Please Help Quickly!!!

Mathematics
1 answer:
Sophie [7]3 years ago
5 0

It's the value of \dfrac{\mathrm dy}{\mathrm dx} when x=1:

y=x^2\implies\dfrac{\mathrm dy}{\mathrm dx}=2x

When x=1, the derivative/slope is 2, so the answer is C.

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What is 1 Tablespoon as a fraction?
OLEGan [10]
In a cup, one tablespoon is 1/16. There are 16 tablespoons in a cup. 1 tablespoon also equals 3 teaspoons.
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3 years ago
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What is the area of the figure?<br>​
Oksi-84 [34.3K]

Answer:

5.4 in.

Step-by-step explanation:

Figuring out the area of shapes like these are quite simple, you first have to break apart this shape to make solving this easier. If you draw a line and break off the triangle from the square you will get 2 different shapes. A square with all the sides being 2 inches, and a triangle that is 2 inches tall and 1.4 inches across (you subtract 3.4 by 2). Next you just use the equation (2 * 2) + ((1.4 * 2)/2). Multiply 2 by 2 (which is 4) and you get the area of the square (you multiply the base by the width). And for the triangle you multiple 1.4 by 2 (you get 2.8)... But because it's a triangle you have to divide that number by 2 since the triangle is half of a square. So 2.8 / 2 is going to be 1.4. After that you now have the equation 4 + 1.4 and the answer is going to be 5.4.

6 0
3 years ago
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g A 5 foot tall man walks at 10 ft/s toward a street light that is 20 ft above the ground. What is the rate of change of the len
vredina [299]

Answer:

-\frac{10}{3}ft/s

Step-by-step explanation:

We are given that

Height of man=5 foot

\frac{dy}{dt}=-10ft/s

Height of street light=20ft

We have to find the rate of change of the length of his shadow when he is 25 ft form the street light.

ABE and CDE are similar triangle because all right triangles are similar.

\frac{20}{5}=\frac{x+y}{x}

4=\frac{x+y}{x}

4x=x+y

4x-x=y

3x=y

3\frac{dx}{dt}=\frac{dy}{dt}

\frac{dx}{dt}=\frac{1}{3}(-10)=-\frac{10}{3}ft/s=-\frac{10}{3}ft/s

Hence, the rate of change of the length of his shadow when he is 25 ft from the street light=-\frac{10}{3}ft/s

7 0
3 years ago
I am very confused plz help
prohojiy [21]

Answer:

a  26

b  8  2/3

Step-by-step explanation:

a)  4 1/3 * 6

Change the mixed number to an improper fraction

(3*4+1)/3 *6

13/3 *6

= 78/3

= 26


b)  2 3/5 * 3 1/3

Change the mixed numbers to  improper fractions

(5*2+3)/5   * (3*3+1)/3

13/5 *  10/3

130/15

Top and bottom divide by 5

26/3

Change back to a mixed number

3 goes into 26  8  times  (3*8 =24)   with 2 left over

8 2/3

6 0
3 years ago
Giving brainlist <br> 3x( x−2), when x=7
Colt1911 [192]
21x5=105




hope this helps
3 0
3 years ago
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