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faltersainse [42]
2 years ago
8

7th question help please

Mathematics
2 answers:
Andreas93 [3]2 years ago
5 0
Hey there! :)

You have to find the area of all of them and add it together

Formulas:

Area of a triangle ⇒ (b · h) ÷ 2
Area of a square ⇒ l · w

Square -

l = 5
w = 5

5 × 5 = 25

Triangle - 

b = 5
h = 5

(5 × 5) ÷ 2
   
25   ÷   2   = 12.5

There are 4 triangles

12.5 × 4 = 50

50 + 25 = 75

Surface area = 75 in
²

Hope this helps :)
vaieri [72.5K]2 years ago
3 0
Surface area of the pyramid= 4*(area of the triangle) + area of the square

Area of the triangle = (1/2)*base*height=(1/2)*5*5= 25/2 in²
Area of the square = 5*5 =25 in²

Surface area of the pyramid = 4*(25/2) + 25=2*25 + 25=75 in²
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For the vectors u and v with magnitudes u = 88 and v = 99​, find the angle θ between u and v which makes u and v = 77.
WARRIOR [948]

Answer:

<h2>89.5°</h2>

Step-by-step explanation:

Using the vector formula u.v = |u||v|cos\theta

|u| = magnitude of vector u

|v| = magnitude of vector v

u.v is the dot product of vector u and v

Given |u| = 88, |v| = 99 and u.v = 77, to get \theta we will substitute the given values into the equation above;

77 = 88*99cos\theta\\cos\theta = \frac{77}{88*99} \\cos\theta = \frac{77}{8712} \\cos\theta = 0.008838\\\theta = cos^{-1} 0.008838\\\theta = 89.5^{0}

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2 years ago
Find the square root of 3364 by prime factorization method
olganol [36]

3364

= 2^2 * 29^2

So

√3364 = √(2^2 * 29^2) = 2 * 29 = 58

3 0
2 years ago
What’s 706 divided by 0363
ioda
706 ÷ 0363
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3 years ago
X+2(x+3(x+4(x+5)))=153
Allushta [10]

Answer:

x=1

Step-by-step explanation:

Here first open the inner parentheses and use the distributive property,

4(x+5)=4x+20\\\\(x+4(x+5))=(x+4x+20)=(5x+20)\\\\3(x+4(x+5))=3(5x+20)=15x+60\\\\(x+3(x+4(x+5)))=(x+15x+60)=16x+60\\\\2(x+3(x+4(x+5)))=2(16x+60)=32x+120\\\\x+2(x+3(x+4(x+5)))=x+32x+120=33x+120\\\\\\Hence\ x+2(x+3(x+4(x+5)))=x+32x+120=33x+120\\\\\Rightarrow 33x+120=153\\\\33x=153-120\\\\33x=33\\\\x=1

3 0
2 years ago
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