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barxatty [35]
3 years ago
14

Solve the system by substitution. -5x+3y=2 Y=2x

Mathematics
1 answer:
Volgvan3 years ago
8 0

Answer:

2 is the required answer.

Step-by-step explanation:

<u>Solution:</u>

<u>Given</u><u>:</u>

-5x+3y=2..............(i)

Putting the value of y=2x in the equation (i); we get:

i.e -5x+3×2x=2

or, -5x+6x=2

or, x=2

i.e. x=2

y=2x=2×2=4

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1) The sum of the digits in a 2 digit number is 7. Reversing the digits increases the number by 9. What is the number?
Brilliant_brown [7]

Answer:

34

Step-by-step explanation:

Sum of two numbers = 7

1+6

2+5

3+4

34+9=43

6 0
3 years ago
Can someone please help me???
expeople1 [14]

Answer:

Stem    Leaf

2              8

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8 0
3 years ago
__ The average number of hourly visitors to an art exhibit is 45.13. Write the average number of hourly visitors as a mixed numb
77julia77 [94]

Answer:

45¹³/₁₀₀

Step-by-step explanation:

The average number of hourly visitors to an art exhibit is 45.13.

We are required to write the average number of hourly visitors as a mixed number.

45.13=45+0.13

0.13=13/100 in its simplest form.

Therefore:

45.13=45+13/100

Writing this as a mixed number, we have:

45.13= 45¹³/₁₀₀

Therefore the average number of hourly visitor is given by 45¹³/₁₀₀

7 0
4 years ago
Encuentra el conjugado de :
olchik [2.2K]
El conjugado de a+bi es a-bi  (<span>invierta el signo de la parte imaginaria)
</span>
<span>por lo tanto
</span><span>El conjugado de 3+4i es 3-4i,
</span><span>El conjugado de 6-i es 6+i</span>
7 0
4 years ago
Find the volume of the solid in the first octant bounded by the coordinate planes, the cylinder X^2+Y^2=4 and the plane X+Z=4.
stira [4]

Answer:

4\pi- \frac{8}{3}

Step-by-step explanation:

The solid that you described is shown in the image of below. To compute the volume we use triple integrals. Observe that

0\leq x\leq 2

0\leq y \leq \sqrt{4-x^2}

0\leq z \leq 4-x

So, the volumen of the solid is given by

\int_{0}^{2}\int_{0}^{\sqrt{4-x^2}}\int_{0}^{4-x}1\, dzdydx=\int_{0}^{2}\int_{0}^{\sqrt{4-x^2}}4-x\, dydx=\int_{0}^{2}(4-x)\sqrt{4-x^2}\,dx

This last integral equals 4\pi -\frac{8}{3}

5 0
3 years ago
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