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Marina CMI [18]
3 years ago
7

What is the value of the expression? 84-24428 13 115 13.4 152 O

Mathematics
1 answer:
timama [110]3 years ago
6 0

Answer:

WWhat

Step-by-step explanation:

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Question 20 not yet answered marked out of 1.00 not flaggedflag question question text luna created a trash can in the shape of
Alex Ar [27]

Consider the triangle with sides a=1.6, b=2.3 and c=1.2 feet. You can use cosine theorem twice to find two unknown angles:

1.

b^2=a^2+c^2-2ac\cos \angle B,\\ (2.3)^2=(1.6)^2+(1.2)^2-2\cdot 1.6\cdot 1.2\cos \angle B,\\ 5.29=2.56+1.44-3.84\cos \angle B,\\ 3.84\cos \angle B=4-5.29=-1.29,\\\cos \angle B=-\dfrac{1.29}{3.84} =-0.336

Then you can conclude that ∠B is obtuse (because \cos \angle B) and m∠B=110°.

2.

c^2=a^2+b^2-2ab\cos \angle C,\\ (1.2)^2=(1.6)^2+(2.3)^2-2\cdot 1.6\cdot 2.3\cos \angle C,\\ 1.44=2.56+5.29-7.36\cos \angle C,\\ 7.36\cos \angle C=7.85-1.44=6.41,\\\cos \angle C=\dfrac{6.41}{7.36} =0.871.

Then you can conclude that ∠C is acute (because \cos \angle C>0) and m∠C=29°.

3. m∠A+m∠B+m∠C=180°, then m∠A=180°-110°-29°=41°.

Answer: m∠A=41° (∠A is opposite to the side a=1.6), m∠B=110° (∠B is opposite to the side b=2.3) and m∠C=29° (∠C is opposite to the side c=1.2)

3 0
3 years ago
Given that the length of the side of a right square-based prism is 5 inches, and its volume is 125 cubic inches, find its height
hram777 [196]

Answer:

A. 5 in.

Step-by-step explanation:

A <em>square</em><em> </em><em>prism</em><em> </em>is another name for <em>cube</em><em>,</em><em> </em>and all vertices, edges, and faces are congruent, so this is an automatic giveaway.

I am joyous to assist you anytime.

5 0
4 years ago
1. A small garden has a perimeter of 24 1/4 ft. If the lengths is 8 ft, what is the area of the garden.
Pavlova-9 [17]

The area of the garden is 33 ft².

The number of tiles required to cover the floor is 17 tiles.

The area of a dog pen is 170/9 square yards.

We need to find the area and perimeter for the given questions.

<h3>What are the formulas to find the perimeter and the area of a rectangle?</h3>

The formula to find the perimeter of a rectangle=2(Length+Breadth)

The formula to find the area of a rectangle=Length×Breadth.

Given that, a small garden has a perimeter of 24 1/4 ft and the length is 8 ft.

Now, perimeter = 2(8+Breadth)

⇒24 1/4=16+2×Breadth

⇒97/4-16=2×Breadth

⇒Breadth=97-64/4×2=33/8 ft

Now, Area=8×33/8=33 ft²

Therefore, the area of the garden is 33 ft².

Given that, the floor measures 4 1/2 ft by 3 3/4 ft.

The area of a floor=Length×Breadth=9/2×15/4=135/8 ft²

Number of tiles to cover the floor=135/8=16.875

Therefore, the number of tiles required to cover the floor is 17 tiles.

Given that, a dog pen is 3 1/3 yards wide by 5 2/3 yards long.

Now, the area of a dog pen=10/3×17/3=170/9 square yards.

Therefore, the area of a dog pen is 170/9 square yards.

To learn more about the area and the perimeter visit:

brainly.com/question/11957651.

#SPJ1

5 0
2 years ago
Simplify the following by collecting together like terms.<br><br> 3p-4q+9p-6q+1
EleoNora [17]

Answer:

12p-10q+1

it's saying im being rude

3 0
2 years ago
Read 2 more answers
Please answer and explain how you got it <br> 4a + 3a + 7a^2 + 3a^2 + 4^2 =
harina [27]
The answer is
7a+10a^2+4^2
8 0
3 years ago
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