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almond37 [142]
3 years ago
13

1 - x = 8 what do you do if there is no number by the x ?​

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

x with no number beside it simply means 1x

Rudiy273 years ago
6 0
X=-7 that’s my answer
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A 20 ft. ladder is used against a 15 ft. wall. What is the measure of the angle made by the ladder and the ground (nearest whole
Brrunno [24]

Step-by-step explanation:

Given that,

The length of a ladder, H = 20 feet

The height of the wall, h = 15 ft

We know that,

\sin\theta=\dfrac{h}{H}

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So,

\sin\theta=\dfrac{15}{20}\\\\\theta=\sin^{-1}(\dfrac{15}{20})\\\\\theta=48.59^{\circ}

Now using Pythagoras theoerm,

b=\sqrt{H^2-h^2}\\\\b=\sqrt{20^2-15^2}\\\\b=13.2\ ft

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.

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3 years ago
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Marina86 [1]

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Answer:

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Step-by-step explanation:

Adjacent angles in a parallelogram are supplementary.

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Answer:

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