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Elan Coil [88]
3 years ago
7

The Table Shows The Number Of Rows Of Bricks A Worker Can Lay In Different Numbers Of Hours

Mathematics
1 answer:
klemol [59]3 years ago
4 0
The answer is 3. If you set it up in a T table and label x as the number of hours and y as the number of rows. Then use rise over run (y over x) the fractions simplify to 3 over 1.
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Can someone explain to me this derivative : y=3x√x
dimaraw [331]

Answer:

(9/2)√x.

Step-by-step explanation:

Convert the radical to an exponent.

x√x = x^1 * x^1/2

= x^(1 + 1/2)

= x^3/2

So the derivative of 3x^3/2 is found as follows:

y' = 3 * 3/2x^(3/2 - 1)

= (9/2)x^1/2

= (9/2)√x.

6 0
3 years ago
I really need help with this i beg you !!
sweet-ann [11.9K]

Answer:

The perimeter and area of the square are 56 units and 196 square units, respectively.

Step-by-step explanation:

The inner right triangle represents a 45-45-90 right triangle, which has the feature of a hypotenuse whose length is \sqrt{2} time the length of any of its legs. If the hypotenuse has a measure of 7\sqrt{2}, then the legs of the triangle have a measure of 7.

Now, we are aware that the side length of the square is twice the length of the leg of the right triangle. Then, side length of the square is 14 units long.

Lastly, we know from Geometry that the perimeter and area of the square are represented by the following expressions:

Perimeter

p = 4\cdot l (1)

Area

A = l^{2} (2)

Where l is the side length of the square.

If we know that l = 14, then the perimeter and area of the square are, respectively:

p = 4\cdot (14)

p = 56

A = 14^{2}

A = 196

The perimeter and area of the square are 56 units and 196 square units, respectively.

7 0
3 years ago
Millie bought a computer for $600 at 40% off how much was it before discounts including sales tax of 8%
valina [46]
$648 because the sales tax is 600*0.08=48
600+48=648
5 0
3 years ago
Kevin purchased 5 hamburgers for $1.40 each and 6 sodas for $1.25 each. The tax on his order
Natali [406]
A. 14.50
Hope this helps
4 0
3 years ago
Read 2 more answers
X^-2+4x^-1+3=0 solve by making appropriate substitution
Alex

ANSWER

x =  - 1 \: or \: x =  -  \frac{1}{ 3}

EXPLANATION

The given equation is:

{x}^{ - 2}  + 4 {x}^{ - 1}  + 3 = 0

Recall that:

{a}^{ - m}  =  \frac{1}{ {a}^{m} }

\frac{1}{ {x}^{2} }  +  \frac{4}{x}  + 3 = 0

Or

{( \frac{1}{x} )}^{2}  + 4( \frac{1}{x} ) + 3 = 0

Let

u =  \frac{1}{x}

Our equation then becomes:

{u}^{2}  + 4u + 3 = 0

The factors of 3 that add up to 4 are:

{u}^{2}  + 3u + u + 3

u(u + 3) + 1(u + 3) = 0

(u + 1)(u + 3) = 0

u + 1 = 0 \: or \: u + 3 = 0

u =  - 1 \: or \: u =  - 3

This implies that:

\frac{1}{x}  =  - 1 \: or \:  \frac{1}{x}  =  - 3

x =  - 1 \: or \: x =  -  \frac{1}{ 3}

7 0
3 years ago
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