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3 years ago

Can somebody please hellllp me with thissssss!!! please

Mathematics

2 answers:

erastova [34]3 years ago

7 0

Answer:

Step-by-step explanation:

Tju [1.3M]3 years ago

4 0

Answer:

59 m

Step-by-step explanation:

16 + 15 + 13 + 15 = 59

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If you can answer this that would be amazing thank you!!

Blizzard [7]

Answer:

BC ≈ 19.4 cm

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos71° = $\frac{adjacent}{hypotenuse}$ = $\frac{AB}{BC}$ = $\frac{6.3}{BC}$ ( multiply both sides by BC )

BC × cos71° = 6.3 ( divide both sides by cos71° )

BC = $\frac{6.3}{cos71}$ ≈ 19.4 cm ( to 3 significant figures )

7 0

3 years ago

The measure of an angle is 40.1°. What is the measure of its complementary angle?

Karolina [17]

Answer:

49.9

Step-by-step explanation:

90-40.1=49.9

8 0

3 years ago

Find mZR R 120° 140° S Need help with this question?

andrew-mc [135]

Answer:

$m\angle R = 50 \degree$

Step-by-step explanation:

By inscribed angle theorem:

$m\angle R = \frac{1}{2} [360 \degree - (120 \degree + 140 \degree)] \\ \\ m\angle R = \frac{1}{2} [360 \degree -260 \degree] \\ \\ m\angle R = \frac{1}{2} \times 100 \degree \\ \\ m\angle R = 50 \degree \\ \\$

8 0

3 years ago

Use logical equivalences (not a truth table) to reduce p → (q − p) to a tautology t. In other words, you should transform p → (q

schepotkina [342]

Answer:

The statement $p\rightarrow (q\rightarrow p)$ is a tautology.

$p\rightarrow (q\rightarrow p)\equiv \lnot p\lor (q\rightarrow p) \equiv \lnot p\lor (\lnot q\lor p) \equiv (p\lor \lnot p) \lor \lnot q \equiv T \lor \lnot q \equiv T$