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3 years ago

What is the resulting equation when the expression for y in the second equation is substituted into the first equation-3x+2y=-3

Mathematics

1 answer:

Alex3 years ago

5 0

Answer:

x=-5/11, y=-9/11. (-5/11, -9/11).

Step-by-step explanation:

3x+2y=-3

y=4x+1

---------------

3x+2(4x+1)=-3

3x+8x+2=-3

11x=-3-2

11x=-5

x=-5/11

y=4(-5/11)+1

y=-20/11+11/11

y=-9/11

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Mikayla earns $ 100 every 8 hours at her new job. At

spin [16.1K]

Answer:

$175

Step-by-step explanation:

100 divided by 8 is 12.5

12.5 x 14 is 175.

6 0

3 years ago

Choose the equation that is the standard form of

Ronch [10]

For this case we have the following equations:
5y = 3-2x
5y-3 = -2x
2x + 5y = 3
2x + 5y-3 = 0
The standard form of the equations is given by:
Ax + By = C
Therefore, the equation written in its standard form is:
2x + 5y = 3
Where,
A = 2
B = 5
C = 3
Answer:
The equation that is the standard form is:
2x + 5y = 3

7 0

3 years ago

What is the smallest whole number to the right of 3.52?

igor_vitrenko [27]

I got the answer of 4

5 0

3 years ago

Find the volume of a cone with a height of 3.25 centimeters and a diameter of 2.2 centimeters.

saveliy_v [14]

Answer:

As per Provided Information

Height of cone h is 3.25 cm

Diameter of cone is 2.2 cm

Radius = Diameter/2

Radius = 2.2/2

Radius = 1.1 cm

We have been asked to determine the volume of the cone .

Using Formulae 

$\boxed{\bf \:Volume_{(Cone)} = \cfrac{1}{3} \pi {r}^{2}h}$

Substituting the given value and let's solve it

$\sf\longrightarrow \: Volume_{(Cone)} = \cfrac{1}{3} \times 3.14 \times {1.1}^{2} \times 3.25 \\ \\ \\ \sf\longrightarrow \: Volume_{(Cone)} = \cfrac{1}{3} \times 3.14 \times 1.21 \times 3.25 \\ \\ \\ \sf\longrightarrow \: Volume_{(Cone)} = \cfrac{1}{3} \times 3.14 \times 3.9325 \\ \\ \\ \sf\longrightarrow \: Volume_{(Cone)} = \cfrac{1}{3} \times 12.34805 \\ \\ \\ \sf\longrightarrow \: Volume_{(Cone)} = \cfrac{12.34805}{3} \\ \\ \\ \sf\longrightarrow \: Volume_{(Cone)} = 4.11 {cm}^{3}$

Therefore,

Volume of the cone is 4.11 cm³ .

3 0

3 years ago

What is the surface area of a cylinder with base radius of 4 and height 5

shtirl [24]

Answer:

A= 226.08

Step-by-step explanation:

The formula for the surface area of a cylinder is A=2πrh + 2πr^2

So, plug in the numbers. π(pi)= 3.14

A= (2 × 3.14 × 4 × 5) + (2 × 3.14 × 4²)

You could use a calculator for the last few steps.

Multiply what's in the first set of parenthesizes: I25.6

Now, multiply the numbers in the other pair of parenthesizes: 100.48

Lastly, add the two numbers together: 226.08

226.08 is the surface area of the cylinder.

5 0

3 years ago