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kolbaska11 [484]
2 years ago
11

Pls help me I don’t know

Mathematics
2 answers:
pochemuha2 years ago
8 0

All angles of a triangle sums up to 180 degrees

a° = 3a + 90 = 180°

   3a = 180 - 90

   3a = 90

     a = 90÷3

     a = 30°

b = 180-(25+90)

b = 180 - 115

b = 65°

<em><u>PLEASE MARK THIS ANSWER THE BRAINLIEST</u></em>

Ede4ka [16]2 years ago
6 0

Answer:

b= 65 a=25 and 2a=32.5

Step-by-step explanation:

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Step-by-step explanation:

Step 1: Simplify

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Given that P = (-7, 16) and Q = (-8, 7), find the component form and magnitude of vector QP .
Katyanochek1 [597]

Answer:

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b)The magnitude is √65

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Step-by-step explanation:

Recall that:

\vec {QP}=\vec {OP}-\vec{OQ}

We substitute the position vectors to get:

\vec {QP}=\binom{ - 8}{7} -  \binom { - 7}{15}

We subtract the corresponding components to obtain:

\vec {QP}=\binom{ - 8 -  - 7}{7 - 15}

This gives:

\vec {QP}=\binom{ - 8  + 7}{7 - 15}

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\vec {QP}=\binom{ - 1}{ - 8}

The magnitude of a vector in the component form:

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u+v=<4+-2,8+6>

This simplifies to:

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