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Vadim26 [7]
3 years ago
6

Dorothy is half her sister's age. she will be three fourths of her sister's age in 20 years. how many years old is she?

Mathematics
2 answers:
Nitella [24]3 years ago
6 0
<span>Dorthy's age is 10, she will be 30 in 20 years.</span>
stich3 [128]3 years ago
3 0
She will be 30
i'm pretty sure
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Answer:

PM:MQ = 8:3.

Step-by-step explanation:

\rm \angle B\hat{M}P + 90^{\circ} + \angle C\hat{M}Q = 180^{\circ};

\implies \rm \angle B\hat{M}P + \angle C\hat{M}Q = 90^{\circ};

\implies \rm 90^{\circ} - \angle B\hat{M}P = \angle C\hat{M}Q.

Also,

\rm \angle B\hat{P}M = 90^{\circ} - \angle B\hat{M}P in right triangle PBM.

Thus \rm \angle{P\hat{B}M} = \angle C\hat{M}Q.

Additionally \rm \angle \hat{B} = 90^{\circ} = \angle \hat{C}.

Therefore \rm \triangle PBM \sim \triangle MCQ.

\rm \displaystyle BC = 2\;MC for M is the midpoint of segment BC.

\rm \displaystyle PB = \frac{4}{3}BC = \frac{8}{3}MC.

\rm \triangle PBM \sim \triangle MCQ implies that

\displaystyle \rm PM:MQ = PB:MC = 1:\frac{8}{3} = 8:3.

8 0
3 years ago
The total surface area of this triangular pyramid is_____?<br><br> help asap
Inessa05 [86]

Answer: 208 in^2

Step-by-step explanation:

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find the surface area of the 4 triangular lateral faces

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add the surface area of the square base and lateral faces

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Answer:

1. e

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Step-by-step explanation:

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The question displays a table that organizes the data

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When you compare the x and y values of a relationship, in this case the b and t variables, you use a ratio.

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It’s definitely all of the above there all basiclalu the same factor answer it’s just with different numbers
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2 years ago
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The answer to this question is 8
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