Step-by-step explanation:
all you have to do is multiply all those numbers together so 0.5 * 4.2 * 2.8 *7 =41.16
the process the exact same for all the other ones they have all your stuff set out for you on each one of the shapes
The length of QR is 44 inches
Step-by-step explanation:
In Δ PQR
- PQ = 39 inches
- PR = 17 inches
- PN is the altitude of it and its length is 15 inches
We need to find QR
To solve this problem we will use Pythagoras Theorem let us revise it
In ΔABC, if b is the right angle, then AC is called the hypotenuse of the Δ, AB , BC are its two legs, the relation between them is:
(AC)² = (AB)² + (BC)²
In Δ PQR
∵ PN is the altitude
∴ PN ⊥ QR
∴ m∠PNQ = m∠PNR = 90°
In ΔPNQ
∵ m∠PNQ = 90° ⇒ proved
- PQ is the hypotenuse
∴ (PQ)² = (PN)² + (NQ)²
∵ PQ = 39 ⇒ given
∵ PN = 15 ⇒ given
- Substitute them in the equation above
∴ (39)² = (15)² + (NQ)²
∴ 1521 = 225 + (NQ)²
- Subtract 225 from both sides
∴ 1296 = (NQ)²
- Take √ for both sides
∴ 36 = NQ
In Δ PNR
∵ m∠PNR = 90° ⇒ proved
- PR is the hypotenuse
∴ (PR)² = (PN)² + (NR)²
∵ PR = 17 ⇒ given
∵ PN = 15 ⇒ given
- Substitute them in the equation above
∴ (17)² = (15)² + (NR)²
∴ 289 = 225 + (NR)²
- Subtract 225 from both sides
∴ 64 = (NR)²
- Take √ for both sides
∴ 8 = NR
∵ QR = NQ + NR
∴ QR = 36 + 8
∴ QR = 44 inches
The length of QR is 44 inches
Learn more:
You can learn more about the triangles in brainly.com/question/4354581
#LearnwithBrainly
Answer:
verticle
you are correct
Step-by-step explanation:
Answer:
Equation
Step-by-step explanation:
Equation Rate of change: 2/1=2
Graph Rate of Change: -4/1=-4
Answer:
26*25*24=15600 ways
Step-by-step explanation:
for the gold medal, there are 26 possible people that can win it.
for the silver medal, there are 25 possible people that can win it because someone already has the gold medal.
same for bronze. 24
then multiply the numbers and you will get 15600.