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2 years ago

Can somebody help me please

Mathematics

1 answer:

Andrei [34K]2 years ago

5 0

Answer:

I believe it’s 65

Step-by-step explanation:

Not fully sure

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41% of the students at an art college want to be a graphic designer about what fraction of the students want to be a graphic des

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3 years ago

I need help with my math

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The Slope of a Line

Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

The graph provided suggests the use of the points (3,-3) and (5,-3). The slope is:

$\displaystyle m=\frac{-3+3}{5-3}=\frac{0}{2}=0$

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1 year ago

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2 years ago

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Alex17521 [72]

5x-30y=-35

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2 years ago

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| 10. Triangle ABC ~Triangle DEF with AB = 8, BC = 12,

Leno4ka [110]

Answer:

Perimeter of triangle DEF = 54 units

Step-by-step explanation:

Given:

Δ ABC is similar to Δ DEF

AB = 8, BC = 12, AC =16 and DE = 12.

Since, the two triangle are similar, their corresponding sides will be in proportion. Therefore,

$\frac{AB}{DE}=\frac{BC}{EF}=\frac{AC}{DF}$

Now, consider the first two ratios.

$\frac{AB}{DE}=\frac{BC}{EF}$

Plug in 8 for AB, 12 for BC, 12 for DE and solve for EF. This gives,

$\frac{8}{12}=\frac{12}{EF}\\8\times EF=12\times 12\\8\times EF=144\\EF=\frac{144}{8}=18$

Now, consider the ratio:

$\frac{AB}{DE}=\frac{AC}{DF}$

Plug in 8 for AB, 16 for AC, 12 for DE and solve for DF. This gives,

$\frac{8}{12}=\frac{16}{DF}\\8\times DF=16\times 12\\8\times DF=192\\DF=\frac{192}{8}=24$

Therefore, the lengths of sides of triangle DEF are:

DE = 12, EF = 18 and DF = 24

Now, perimeter is the sum of all the sides of the triangle. Therefore,

$Perimeter=DE +EF+DF\\Perimeter=12+18+24=54$

Therefore, the perimeter of the triangle DEF is 54 units.

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3 years ago