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Neko [114]
3 years ago
15

Help me please,Thanks;)

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0
I think its the second choice

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I need to know the answer
Elena L [17]

9514 1404 393

Answer:

  D.  105 ft²

Step-by-step explanation:

The total surface area is the sum of the base area and the triangular face areas.

Area of base:

  A = s²

  A = (7 ft)² = 49 ft²

Area of 4 triangles:

  A = 4(1/2)bh

  A = 2(7 ft)(4 ft) = 56 ft²

Total surface area:

  base area + triangle area = 49 ft² +56 ft² = 105 ft²

4 0
2 years ago
Please someone help me
hram777 [196]
The answer is 57 inches

5 0
3 years ago
A plane flying horizontally at an altitude of 3 mi and a speed of 440 mi/h passes directly over a radar station. find the rate a
Amiraneli [1.4K]
Let α represent the acute angle between the horizontal and the straight line from the plane to the station. If the 4-mile measure is the straight-line distance from the plane to the station, then
  sin(α) = 3/4
and
  cos(α) = √(1 - (3/4)²) = (√7)/4

The distance from the station to the plane is increasing at a rate that is the plane's speed multiplied by the cosine of the angle α. Hence the plane–station distance is increasing at the rate of
  (440 mph)×(√7)/4 ≈ 291 mph
8 0
3 years ago
Of the students in Jill's grade, 41 students have a pet and the other 7 students do not. What is the ratio of the number of stud
quester [9]

Answer:

The answer is 7 : 48.

Step-by-step explanation:

First, you can to calculate how many students are there in Jill's grade by adding the number of students who have pet with the students without pets :

total = 41 + 7 = 48

Next, you have to find the ratio of students without pets to total students :

7 : 48

8 0
3 years ago
Read 2 more answers
Last year, the hiking club had 25 members. This year, there’s 37. What is the percent increase?
borishaifa [10]

Answer:

The hiking club's member count increased by 48%.

Step-by-step explanation:

We are given two data values: 25 members and 37 members. We need to determine how many members the club gained first. We can set up an equation where we solve for an unknown, or<em> x</em>, in this case.

25 + x = 37\\\\x = 12

The club increased by 12 members, so now we can divide this value by the initial amount of members and multiply the decimal we receive by 100 to express it in percentage form.

\frac{12}{25} =0.48\\\\0.48 \times 100 = 48\%

Therefore, the club's member count increased by 48%.

5 0
2 years ago
Read 2 more answers
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