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3 years ago

Pls pls help! super desperate. find the lateral surface areas of the shapes shown in the photo

Mathematics

1 answer:

Alja [10]3 years ago

3 0

Answer:

3- 0.14 2- 841

Step-by-step explanation:

3- 0.7*0.2=0.14

2- 56/2= 28

28*28+29*29= 841*841

square root of 841*841= 841

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How many pairs of parallel line does a triangle have

sammy [17]

Answer:

None.

Step-by-step explanation:

A triangle has 3 sides so any pair of parallel lines is impossible.

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3 years ago

Read 2 more answers

Jack and Jim sign up with an online music store. Jack chooses 15 downloads for $19.75, and Jim chooses 40 downloads for $43.50.

lina2011 [118]

The answer would be A. The registration fee is $5.50, and the cost per download is $0.95.

Solution
Let x = registration fee
y = cost/downloads

Jack
15y + x = 19.75 ; x = 19.75 - 15y
Jim
40y + x = 43.50

Thus,
40y + x = 43.50
40y + 19.75 - 15y = 43.50
25y = 23.75
y= 0.95

for x,
x = 19.75 - 15y
x = 19.75 - 15( 0.95)
x= 19.75 -14.25
x = 5.5

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4 years ago

Which expression is equivalent to -6- (-2)?

Arte-miy333 [17]

Answer:

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Step-by-step explanation:

8 0

3 years ago

You are making numbers to hang outside the classrooms in your school.

Oksanka [162]

Answer:

0- 11 times

1,2,3,4,5,6,7,8,9- 12 times

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3 years ago

In DEF the measure of D is equal to 5 degrees more than the measure of E. The sum of the measures of D and E is 10 degrees more

Gelneren [198K]

Answer: Measure of angle E = 45°

Measure of angle D = 45°+5° = 50°

Measure of angle F = 85°

Step-by-step explanation:

Let the measure of angle E be x. ( in degrees)

Then Measure of angle D = x+5

Also, Angle D + Angle E = Angle F +10

$\Rightarrow\ x+5+x =\text{Angle F}+10\\\\\Rightarrow\ \text{Angle F} = 2x+5-10\\\\\Rightarrow\ \text{Angle F} = 2x-5$

Since DEF is a triangle, so the sum of their angles should equal to 180 degrees.

$\Rightarrow\ x+x+5+2x-5=180\\\\\Rightarrow\ 4x=180\\\\\Rightarrow\ x=45$

Measure of angle E = 45°

Measure of angle D = 45°+5° = 50°

Measure of angle F = (2(45)-5)° = (90-5)° = 85°

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3 years ago