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expeople1 [14]
3 years ago
9

How do you solve this?

Mathematics
1 answer:
Rus_ich [418]3 years ago
4 0

Answer:

x=25°, y=10°

Step-by-step explanation:

∠A+∠B=180°

8y+10y=180°

18y=180°

y=10°

∠B+∠C=180°

10y+4x-20°=180°

10*10°+4x=180°+20° (y=10°)

100°+4x=200°

4x=200°-100°

4x=100°

x=25°

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ankoles [38]

Answer:

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5 0
2 years ago
A large high school offers AP Statistics and AP Calculus Among the seniors in this school 65% take AP Statistics, 45% take AP Ca
Igoryamba

Answer:

0.8

Step-by-step explanation:

P(AP statistics) = 65%

P(AP Calculus) = 45%

P(AP statistics n AP Calculus) = 30%

Probability of AP statistics or AP Calculus but not both :

Probability of event A or B :

P(AUB) = p(A) + p(B) - p(AnB)

P(AP statistics U AP Calculus) = P(AP statistics) + P(AP Calculus) - P(AP statistics n AP Calculus)

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4 0
2 years ago
How do you write 25/45 as a ratio
Gwar [14]
It is 5:9 in simplest form 
3 0
3 years ago
Read 2 more answers
Transform the Cartesian (rectangular) equation to a polar equation: x = -9. The selected answer is incorrect.
nika2105 [10]

Answer:

Solution : Option C

Step-by-step explanation:

We have the equations r² = x² + y², x = r cos(θ), and y = r sin(θ) that can be used to solve this problem. In this case we only need the second two equations (  x = r cos(θ), and y = r sin(θ) ) as we don't need to apply the concept of circles etc here.

Given : x = - 9,

( Substitute r cos(θ) for x )

r cos(θ) = - 9,

r = - 9 / cos(θ)

( Remember that sec is the reciprocal of cos(θ). Substitute sec for 1 / cos(θ) )

r = - 9 sec(θ)

Therefore the third option is the correct solution.

6 0
3 years ago
9 less than one-fifth of c
quester [9]

Answer: The equation in math form is \frac{1}{5}c - 9.

Step-by-step explanation:

So the givens are:

9 less than one-fifth of c

Let's put this equation in math form:

\frac{1}{5}c - 9

Hence your answer!

7 0
3 years ago
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