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Svetllana [295]
3 years ago
15

7.

Mathematics
1 answer:
NARA [144]3 years ago
4 0

Answer:

PB = 1.8

Step-by-step explanation:

PQ = 8 cm, BC = 10 cm and AB = 9 cm

∆ABC is similar to ∆APQ.

Therefore:

\frac{AB}{AP} = \frac{BC}{PQ}

Plug in the values

\frac{9}{AP} = \frac{10}{8}

Cross multiply

AP × 10 = 8 × 9

AP × 10 = 72

Divide both sides by 10

AP = 7.2

PB = AB - AP

PB = 9 - 7.2

PB = 1.8

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horsena [70]

Answer:

So x = 20

Step-by-step explanation:

AB + BC = AC sum of a segment is sum of its pieces

AB + AB = AC B is the midpoint, so AB = BC

2x + 2x = 3x + 20 putting in for AB (twice!) and AC

4x = 3x + 20 collect like terms

x = 20 subtract 3x on both sides.

Read more on Brainly.com - brainly.com/question/10838483#readmore

7 0
3 years ago
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podryga [215]

Answer:

(4x + 7y)(4x - 7y)

Step-by-step explanation:

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= 4^2x^2 - 49y^2

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= 4^2x^2 - 7^2y^2

Apply the Exponent Rule Pt 1  ((a^m*b^m =(ab)^m))

= (4x)^2 - 7^2y^2

Apply the Exponent Rule Pt 2

= (4x)^2 - (7y)^2

Apply Difference of Squares Formula (( x^2-y^2 = (x + y)(x - y)

= (4x + 7y) (4x - 7y)

6 0
3 years ago
Points A, R and G are points of tangency. Find the perimeter of ∆NET below.
Paha777 [63]

Answer:

\small\mathfrak\red{here \: is \: your \: solution..} \\  \\ we \: know \: that \: tangent \\ from \: a \: same  point \: are \: equal \\  \\ tr = 9 | an = 7 |  eg = 5 \\  \\ tr = ta | an = gn | eg = re \\  \\ ta = 9 |  gn =7 | re = 5 \\  \\ hence \: perimeter \:  = 2(9 + 7 + 5) \\  \\ perimeter = 42 \:  \\  \\ \huge\mathfrak\purple{hope \: it \: helps...}

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3 years ago
A card is picked up at random from a pack of 52 cards. Find the probability that it is a king or queen.
zalisa [80]
Total number of cards = 52
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P(King or Queen) = 8/52 = 2/13

------------------------------------------------------------
Answer: The probability is 2/13.
------------------------------------------------------------
3 0
3 years ago
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