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Alla [95]
3 years ago
9

A paper company is cutting a tree to build the foundation of a house. At the end of the first day, the company had hauled away 3

/10 of a truckload of wood. On the second day, they hauled away 1/10 of wood. How many woods did they haul away in all?
Write your answer as a fraction or as a whole or mixed number.
Mathematics
2 answers:
MatroZZZ [7]3 years ago
8 0
4/10 if they took 3/10 and 1/10 the next time just add 3+1 but add a denominator which is the 10
Fed [463]3 years ago
5 0

Answer:

4/10

Step-by-step explanation:

its like adding 3 +1 but in a different way

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Determine whether or not f is a gradient vector field. if it is, find a function φ such that f = ∇φ. (if the vector field is not
MArishka [77]
\mathbf f(x,y)=(2x-6y)\,\mathbf i+(-6x+10y-7)\,\mathbf j

For \mathbf f to be the gradient of some scalar function \varphi(x,y), we need to find \varphi that satisfies

\dfrac{\partial \varphi}{\partial x}=2x-6y
\dfrac{\partial \varphi}{\partial y}=-6x+10y-7

From the first PDE, it follows that (upon integrating with respect to x)

\varphi(x,y)=x^2-6xy+g(y)

Differentiating with respect to y yields

\dfrac{\partial\varphi}{\partial y}=-6x+10y-7=-6x+\dfrac{\mathrm dg}{\mathrm dy}
\implies\dfrac{\mathrm dg}{\mathrm dy}=10y-7\implies g(y)=5y^2-7y+C

\implies\varphi(x,y)=x^2-6xy+5y^2-7y+C
4 0
4 years ago
4x-3=2x+7<br><br> plz help on this question
SSSSS [86.1K]

Answer:

4x-3=2x+7

4x-2x=7+3

2x=10

10/2x=5

therefore x=5

....hope this helps

4 0
3 years ago
Read 2 more answers
Write the proportion.<br> 6.5 hours is to 5.2 hours as<br> 8.0 hours is to 6.4 hours
love history [14]

Step-by-step explanation:

6,5:5,2=8:6,4 hope it helps

5 0
4 years ago
What does |-71 equal?
erastovalidia [21]

Answer:

71 (or 7.... read explanation)

Step-by-step explanation:

If you mean | -71 | then it's 71.

If you mean | -7 | then it's 7

Absolute values turn negative numbers into positive numbers.

5 0
3 years ago
Read 2 more answers
What is the answer to this?
amm1812

Answer:

<h2>40.1 cm</h2>

solution,

BC=8.4 cm

AB=12 cm

BD=4.1 cm

We have to find out: AC ,CD

using Pythagoras theorem:

In ∆ABC ,<B=90°

{(ac)}^{2}  =  {(ab)}^{2}  +  {(bc)}^{2} \\  {(ac)}^{2}   =  {(12)}^{2}  +  {(8.4)}^{2}  \\  {(ac)}^{2}  = 144 + 70.56 \\  {(ac)}^{2}  = 214.56 \\ ac =  \sqrt{214.56}  \\ ac = 14.64 \: cm

Similarly,

In ∆BCD, CB=90

cd =   \sqrt{ {(8.4)}^{2} +  {(4.1)}^{2}  }

=  \sqrt{70.56 + 16.81}  \\  =  \sqrt{87.37}  \\  = 9.34 \: cm

Perimeter:

AC+CD+AD

=14.64+9.34+(12+4.1)

=40.08

= 40.1 cm

Hope this helps...

Good luck on your assignment..

7 0
3 years ago
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