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ahrayia [7]
3 years ago
9

What is the area of triangle QRS?

Mathematics
2 answers:
mel-nik [20]3 years ago
4 0

Answer:

140

Step-by-step explanation:

Solnce55 [7]3 years ago
3 0

Answer:

√40

Step-by-step explanation:

hmu for an explanation

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Esther drove to work in the morning at an average speed of 45 miles per hour. She returned home in the evening along the same ro
nydimaria [60]
The key is Esther travelled the same distance - x - in both her morning and evening commute.

45(time she took in the morning, or p) = x
30(time she took in the evening, or q) = x

Therefore 45(p) = 30(q), or divide both sides by 5 and get 9(p) = 6(q). I know you can divide it further, but these numbers are small enough and it's not worth the time.

Since the whole trip took an hour, (p + q) = 60min, and so, p = 60-q.

Therefore 9(60-q) = 6q or 540-9q = 6q. So 540 = 15q, which makes q = 36. If q = 36, then by (p+q)=60, p (the time she took in the morning) must equal 24.

45 miles per hour, her speed in the morning, times (24/60) hours, her time, makes 18 miles travelled in the morning. If you check, 30 miles per hour times (36/60) hours also makes 18 miles in the evening.

<span>Hope that makes a little sense. And I also hope it's right</span>
7 0
3 years ago
Read 2 more answers
A square piece of tissue paper has sides that are 12 centimeters long. What is the tissue
slega [8]

Answer:

48

Step-by-step explanation:

A square has 4 sides of equal length. 12 x 4=48

7 0
4 years ago
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Sarah starts a jewelry making business. she borrows the money for the supplies to start. she borrows $1,500.00 for 2 years at a
kolezko [41]

Answer:

$260

Step-by-step explanation:

($1500×.12×2)=$360

4 0
1 year ago
If 1 - cosA= 1/2 show that tan²A + 4sin²A = 6​
pav-90 [236]

\text{Given that,}\\\\1-\cos A = \dfrac 12\implies \cos A = 1-\dfrac 12 = \dfrac 12\\\\\text{L.H.S}\\\\=\tan^2 A + 4 \sin^2 A\\\\=\dfrac{\sin^2 A}{\cos^2 A}+4(1-\cos^2 A)\\\\\\=\dfrac{1-\cos^2 A}{\cos^2 A} +4-4\cos^2 A\\\\\\=\dfrac{1-\left( \dfrac 12 \right)^2 }{\left(\dfrac 12 \right)^2 } +4 -4 \left( \dfrac 12 \right)^2\\\\\\=\dfrac{1- \dfrac 14}{\dfrac 14}+4-4\cdot  \dfrac 14\\\\\\=\dfrac{\tfrac 34}{\tfrac 14}+4-1\\\\\\=\dfrac 34 \cdot 4 +3\\\\=3+3\\\\=6\\\\=\text{R.H.S}

3 0
2 years ago
Tobias’s closet has 1 red hat and 1 black hat; 1 white shirt, 1 black shirt, and 1 black-and-white-striped shirt; and 1 pair of
forsale [732]

Answer:

There are total 12 outfit combinations.

Step-by-step explanation:

Number of hat are: 2

1 red hat and 1 black hat

Number of shirt are: 3

1 white shirt , 1 black shirt , 1 black-and-white striped shirt.

Number of pants are: 2

1 black and 1 blue

Now, the total number of combinations could be seen with the help of a tree diagram.

We observe that total 12 combinations are possible.

5 0
3 years ago
Read 2 more answers
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