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Leona [35]
3 years ago
10

I need help on this question

Mathematics
2 answers:
AnnZ [28]3 years ago
5 0
Using the fact that the triangles shown are similar, we can set up a proportion between the lengths of the sides. 

The side length in question is QR, or "x". To find its corresponding side in the larger triangle let's look at the similarity.

MNO is similar to PQR
Vertices are always written in order of correspondence when stating similarities. Since QR are the last two letters of the triangle's name, and NO are the last two letters of the larger triangle's name, we know that QR and NO are corresponding sides. We can apply this same method to any other side.

NO/QR = MN/PQ
(MN and PQ are also corresponding sides)
Now we can substitute the side names with their values.
4.5/x = 5/2
Cross multiply
5x = 9
Divide both sides by 5
x = 9/5 or 1.8 or 1 4/5

Hope this helps!

lutik1710 [3]3 years ago
5 0
Hello!

ΔMNO ≈ ΔPQR

MN ≈ PQ

MN = 5
PQ = 2

NO = QR

4 1/2 = 9/2

\frac{2}{5} \times  \frac{9}{2} =  \frac{18}{10} = 1  \frac{8}{10} = 1  \frac{4}{5}

Answer ⇒ 3rd choice
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navik [9.2K]
Hey can someone help me with my latest question no one‘s helping me and I really need it
6 0
3 years ago
If the original quantity is 15 and the new quantity is 19, estimate the percent change.
eduard
To calculate percent change:
(difference between original and new)/original * 100
(19-15)/15 * 100 =
4/15 * 100 = 26.7 % increase

5 0
3 years ago
20. The total mass of three boxes, A, B, and C, is 1.95 kg. The mass of Box A is 700 g. The mass of Box B is 4 times the mass of
Ksju [112]

Answer:

<h3>Mass of B in Kg = -558.44kg</h3>

Step-by-step explanation:

LET'S DO THIS!

Total mass of A, B and C = 1.95kg

Mass of A = 700 kg

Mass of B = 4x the mass of c (4 x C) which is 4c

Mass of C = ? ( let's call it C )

<h3>Adding all together </h3>

700 + 4c + C = 1.95

<h3>Add like terms</h3>

700 + 5C = 1.95

5C = 1.95 - 700

5C = -698.05

C = -698.05 ÷ 5

<h3>C = -139.61</h3>

<h3>To find B now </h3><h3>Remember they said B is 4 times the mass of C and C = -139.61</h3>

therefore B = 4 × -139.61

<h3>B = -558.44 kg </h3>

<h3>To check if we are correct, we add the masses of A, B and C to see if it equals their total mass which is 1.95kg</h3>

<h3>Using your calculator: </h3>

= 700 + ( -558.44 ) + ( -139.61 )

= 700 - 558.44 -139.61

= 1.95 kg

Which makes us CORRECT ✅.

<h3>Hope this helps.</h3><h3>Good luck ✅.</h3>

5 0
1 year ago
Read 2 more answers
Luis se comió 5/12 de los pasteles y Antonio 3/12 de los mismos. ¿Que fracción de los pasteles se comieron?
NISA [10]

*(Respuesta)* = \frac{8}{12}

* (Explicación) * = El motivo por el que necesita agregar \frac{5}{12} a \frac{3}{12}.

Espero que esto ayude

Persona que respondió: BangtanBoyScouts


5 0
3 years ago
Answer question in image attached :)<br> 20 points !<br><br> I think it is 2/4 just not 100% sure :/
sergiy2304 [10]

<u>Answer</u>:

\sf \dfrac{BC}{BD}  = \dfrac{2}{4}

<u>Explanation</u>:

  • BD distance is 4 units
  • BC distance is 2 units

so in fractions:

\sf \dfrac{BC}{BD}  = \dfrac{2}{4}

\sf \dfrac{BC}{BD}  = \dfrac{1}{2}

3 0
2 years ago
Read 2 more answers
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