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andrew-mc [135]
3 years ago
7

Please help me with this question

Mathematics
1 answer:
Elden [556K]3 years ago
4 0

Answer:

Step-by-step explanation:

(a). SR = 15√2 km ≈ 21.2 km

R is 21.2 km due South-East of S

(b). RQ² = 35² + 15² ⇒ RQ = 5√14 km ≈ 38.1 km

R is 38.1 km due South-West of Q

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Is this done correctly??​
Naily [24]

Answer:

YES! That is correct

8 0
3 years ago
Ten years ago ago, you could buy a loaf of bread for $1.21. Twenty years ago, you could buy a loaf of bread for $0.92. What is t
tankabanditka [31]

Answer:

The difference in prices is <u>$0.29</u>.

Step-by-step explanation:

Given:

Ten years ago ago, you could buy a loaf of bread for $1.21. Twenty years ago, you could buy a loaf of bread for $0.92.

Now, to find the difference in prices.

Cost price of loaf of bread 10 years ago = $1.21.

Cost price of loaf of bread 20 years ago = $0.92.

Now, to get the difference in prices we subtract the cost price of loaf of bread 20 years ago from the cost price of loaf of bread 10 years ago:

\$1.21-\$0.92\\\\=\$0.29.

Therefore, the difference in prices is $0.29.

6 0
3 years ago
The table shows the ticket prices for a space museum. Which expression represents the cost
pashok25 [27]

Answer:14a + 18s

Step-by-step explanation:14a +18s

8 0
2 years ago
Read 2 more answers
What is the volume of a right triangular pyramid whose base is 5 meters on each side and whose altitude is 4 meters?
algol13

Answer: 10 for each side but in total is 20

Step-by-step explanation: u multiply 5 x 4 = 20 divided by 2 to get 10 meters and another is 4 divided by 2 is 2 x 5 is 10 meters times 2 is 20 total

7 0
3 years ago
A pharmacist has 30% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 6 lit
kkurt [141]

Answer:

4 liters of 60% solution; 2 liters of 30% solution

Step-by-step explanation:

I like to use a simple, but effective, tool for most mixture problems. It is a kind of "X" diagram as in the attachment.

The ratios of solution concentrations are 3:6:5, so I've used those numbers in the diagram. The constituent solutions are on the left; the desired mixture is in the middle, and the numbers on the other legs of the X are the differences along the diagonals: 6 - 5 = 1; 5 - 3 = 2. This tells you the ratio of 60% solution to 30% solution is 2 : 1.

These ratio units (2, 1) add to 3. We want 6 liters of mixture, so we need to multiply these ratio units by 2 liters to get the amounts of constituents needed. The result is 4 liters of 60% solution and 2 liters of 30% solution.

_____

If you're writing equations, it often works well to let the variable represent the quantity of the greatest contributor—the 60% solution. Let the volume of that (in liters) be represented by v. Then the total volume of iodine in the mixture is ...

... 0.60·v + 0.30·(6 -v) = 0.50·6

... 0.30v = 0.20·6 . . . . subtract 0.30·6, collect terms

... v = 6·(0.20/0.30) = 4 . . . . divide by the coefficient of v

4 liters of 60% solution are needed. The other 2 liters are 30% solution.

6 0
3 years ago
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