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riadik2000 [5.3K]
3 years ago
11

What is the perimeter of JKLM?

Mathematics
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

45

Step-by-step explanation:

KL = 12 because the triangle is isosceles ( base angles are congruent)

KJ = JM = 12 because the triangle is equilateral ( all angles are equal 60°)

the perimeter is

P = 9 + 12 + 12 +12 = 9 +36 = 45

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The surface area of a regular pentagonal pyramid is 125 square yards. The base length is 5 yards. The area of the base is 37.5 s
forsale [732]

Answer:

<h2>The Slant height of the pyramid is 7 yards.</h2>

Step-by-step explanation:

The total surface area is 125 square yards.

The base area is 37.5 square yards.

Hence, the area of the curved surface is 125 - 37.5 = 87.5 square yards.

According, to the formula, the area of the curved surface is \frac{5}{2} \times bs, where b is the base length and s = slant height.

Here, it is given that b = 5 yards.

Thus, \frac{5\times5\times s}{2} = 87.5\\s = 7.

3 0
3 years ago
I really need help asap!!!!!!!!!!!!!!
gogolik [260]
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3 years ago
This right triangular prism has a base with an area of 15 square feet. The height of the prism is 7 feet. What is V, the volume
frez [133]

Answer:

area =  {15}^{2}  \\ v =  \: l \times b \times h \\ area = l \times b = \\   x \times x =  {15}^{2}  \\ volume = 15 \times h \\  = 15 \times 7  \\  =  {105}^{3} feet

3 0
3 years ago
The amount of sales tax on a new car is directly proportional to the purchase price of the car. Victor bought a new car for $30,
Airida [17]

Answer:

Rita paid 47,500 dollars for the purchase price.

Step-by-step explanation:

We are given the sales tax on a new car is directly proportional to the purchase price of the car which means there is is something k such that

when you multiply it to the sales tax you get the purchase price.

Let's set this equation:

y=kx

Let y represent the purchase price and x the sales tax.

The second sentence tells us that (x,y)=(1500,30000).

We can plug this into y=kx to find the constant k.  (Constant means it stays the same no matter what the input and output is).

So we have:

30000=k(1500)

300    =k(15)      I went ahead and divided previous equation by 100.

Now divide both sides by 15:

300/15=k

Simplify:

20=k

So the equation to use the answer the question is

y=20x

where y is purchase price and x is sales tax.

So we want to know the purchase price on a car if the sales tax is 2375.

So replace x with 2375:

y=20(2375)

y=47500

3 0
3 years ago
Read 2 more answers
Find the perimeter of the polygon.<br> 4 ft<br> 7 ft
bazaltina [42]

Answer:

Step-by-step explanation:

perimeter = 2(4ft+7ft) = 2*11ft = 22ft

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3 years ago
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