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4 years ago

Solve the following equation for x: 2x + 5y = 8.

Mathematics

1 answer:

AleksAgata [21]4 years ago

5 0

Answer:

x = -5/2 y +4

Step-by-step explanation:

2x+5y = 8

Subtract 5y from each side

2x+5y -5y = -5y+8

2x = -5y+8

Divide each side by 2

2x/2 = -5y/2 +8/2

x = -5/2 y +4

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The surface area of the solid is about ____ inches squared

Dafna11 [192]

Answer:

Surface area of the whole figure $= 320.28inch^2$

Step-by-step explanation:

The surface area of the figure :

Surface area of the cylinder(excluding top)+Surface area of the cone(excluding bottom)

Radius of the cylinder=3 inch and Height of cylinder=13 inch

Surface area of the cylinder with one circular face

$=2\pi rh+\pi r^2$

As, $\pi =\frac{22}{7}= 3.14$

$=(2*3.14*3*13)+(3.14*3*3)\\\\=244.92+28.26\\\\=273.18inch^2$

Surface area of the cone excluding base:

$=\pi *r*l$

l= slant height=5 inch r= radius= 3 inch

Surface area of the cone = $3.14*3*5$

$=47.1inch^2$

Total surface area of the whole figure $=273.18+47.1$

$= 320.28inch^2$

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3 years ago

What were the factors that led Germany to agree to an armistice?

Dmitrij [34]

Answer:

A, C, D

Step-by-step explanation:

Germany was losing WW1, even though they were the 3rd country to be in it. Russia was starting to conquer back lost land, the Ottoman Empire had fallen, Austria-Hungary had surrendered. The Germans were at a loss, so they had to surrender.

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2 years ago

How many solutions does this equation have? x = x + 9

Simora [160]

Answer: infinte

Step-by-step explanation:

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3 years ago

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Denny bought a bouquet of 20 flowers that cost $12.

Nastasia [14]

There are 8 roses and 12 Carnations in Denny's bouquet.

8 Roses= $6
12 Carnations= $6
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3 years ago

Write the equation of a line that goes through (1.-7) and has a slope of -5.

jekas [21]

Line equation is
y - y1 = m * (x - x1)
y - (-7) = (-5) * ( x - 1)
y + 7 = -5x + 5
y + 5x + 2 = 0

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3 years ago