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Gennadij [26K]
3 years ago
9

NEED HELP ASAP PLEASE!!!!!!!!

Mathematics
2 answers:
Lostsunrise [7]3 years ago
7 0
ANSWER

X = 70

Explanation: in an isosceles triangle the two bases equal each other

Equation set up - 2x + 2x + 40 = 180
MatroZZZ [7]3 years ago
4 0

Step-by-step explanation:

PQR = PRQ = 2x ° ( base angle of an isosceles are equal ) .

therefore

PQR + PRQ + QPR = 180° ( sum of angles in a triangle )

2x + 2x + 40 = 180

4x + 40 = 180

subtract 40 from both sides

4x = 140

divide through by 4

x = 35°

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Galina-37 [17]
You have to distribute the 7 to x and 2 so :
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3 years ago
Type the correct answer in the box. Round your answer to the nearest integer.
umka21 [38]

Answer:

m∠ADC = 132°

Step-by-step explanation:

From the figure attached,

By applying sine rule in ΔABD,

\frac{\text{sin}(\angle ABD)}{\text{AD}}=\frac{\text{sin}(\angle ADB)}{AB}

\frac{\text{sin}(120)}{35}=\frac{\text{sin}(\angle ADB)}{30}

sin(∠ADB) = \frac{30\text{sin}(120)}{35}

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m∠ADB = \text{sin}^{-1}(0.74231)

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             ≈ 48°

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m∠ADC = 180° - 48°

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4 0
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Find the domain of the function.
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When taking square roots, you can't take square roots of negative roots of negative numbers. So, what will work for the domain of u(x) is what makes u(x) zero or more. We can make an inequality for that.

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Need help in math will give BRAINLY
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