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2 years ago

99-4-2-22-2-3-4--4--3-2-3-4-5-6-6-3-3-2-3-4--5-6-5-4-

Mathematics

1 answer:

zvonat [6]2 years ago

7 0

Answer:

REASON: You just do the maths.

When you have the double subtraction sign infront of the 4, 3, and 5 I'm going to take it as if it's a negative.

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What is the surface area in square millimeters of the triangular pyramid?

alukav5142 [94]

Answer:

31 mm² is the surface area.

Step-by-step explanation:

We know that:

Surface area of triangle = 3(1/2 x 4 x 4) + (1/2 x 4 x 3.5)

Work:

3(1/2 x 4 x 4) + (1/2 x 4 x 3.5) mm²
=> 3(2 x 4) + (2 x 3.5) mm²
=> 24 + 7 mm²
=> 31 mm²

Hence, 31 mm² is the surface area.

Hoped this helped.

$BrainiacUser1357$

4 0

2 years ago

Show all your work? and lease help me out ASAP

Nuetrik [128]

Answer: 20

Step-by-step explanation:

3y + 2 = 62

3y = 60

y = 20

5 0

2 years ago

Please help me with question 8 and part 1

larisa [96]

Answer:

m∠B = 95°

Scalene

Step-by-step explanation:

by definition, internal angles in a triangle must add up to 180°

in this case,

∠A + ∠B + ∠C = 180°

we are given ∠C = 55° and ∠A = 30°

30° + ∠B + 55° = 180°

∠B = 180 - 55 - 30 = 95° (Answer)

We can see that all 3 angles of the triangle are different. And hence we can conclude that all 3 sides of the triangle are different length (i.e it is not equilateral or isosceles). Hence it is a scalene triangle.

5 0

3 years ago

Expressions that equal 102

Tasya [4]

Answer:

208 divided by 2

100+2

402-300

Step-by-step explanation:

4 0

2 years ago

The manager of a grocery store wants to determine the average amount of money spent at his store as it compares to the average d

Nezavi [6.7K]

Answer:

The average spent at his store is of $37.60.

The average spent at his competitor's store is of $48.53.

Step-by-step explanation:

Average of a data set:

The mean of a data set is the sum of all values divided by the number of values.

His store:

15 orders.

Prices of: 41, 38, 19, 30, 21, 53, 34, 34, 37, 29, 50, 43, 57, 28, 50

The average is:

$M = \frac{41 + 38 + 19 + 30 + 21 + 53 + 34 + 34 + 37 + 29 + 50 + 43 + 57 + 28 + 50}{15} = 37.6$

The average spent at his store is of $37.60.

Store of the competitor:

15 orders

Prices of: 86, 15, 75, 40, 51, 60, 27, 45, 112, 7, 65, 31, 18, 27, 69

The average is:

$M = \frac{86 + 15 + 75 + 40 + 51 + 60 + 27 + 45 + 112 + 7 + 65 + 31 + 18 + 27 + 69}{15} = 48.53$

The average spent at his competitor's store is of $48.53.

8 0

2 years ago