3 years ago

Plzz answer me question 4. plzzz help me asap!

Mathematics

1 answer:

Pavlova-9 [17]3 years ago

5 0

Answer:

2pb(NO3)2 +2pbO+4NO2 (g)+ O2

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(-4, -3) y (3, -5)

{-12 y, 15 y}

-12 y + 15 y = 3 y

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3 sqrt(41) abs(y)

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2 years ago

One of two complementary angles measures 30 degrees more than three times the other. Find each angle.

Leviafan [203]

The two complementary angles are:

95° and 15°

Step-by-step explanation:

Let x be one angle

then the other angle will be 90-x

As the sum of complementary angles is 90

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The two complementary angles are:

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3 years ago

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Firlakuza [10]

Answer:

$\boxed{\sf \ \ \ x=-9 \ \ or \ \ x=2 \ \ \ }$

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hello,

$2x^2+7x-14=x^2+4\\ 2x^2+7x-14-x^2-4=0\\ x^2+7x-18=0\\x^2-2x+9x-18=0\\ x(x-2)+9(x-2)=0\\ (x+9)(x-2)=0\\ x+9 = 0 \ \text{or} \ x-2=0\\ x = -9 \ \text{or} \ x=2$

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3 years ago

A stick 1 meter long casts a shadow 0.6 meters long. A building casts a shadow 25 meters long. How tall is the building (to 2 de

zloy xaker [14]

Answer:

41.67

Step-by-step explanation:

Using the tangent on the stick with shadow:

tan(θ) = $\frac{1}{0.6}$

Using the tangent on the building:

tan(θ) = $\frac{h}{25}$

⇒ h = 25 · tan(θ)

= 25 · $\frac{1}{0.6}$

⇒ h = 41.66... ≈ 41.67

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3 years ago

Whatts the awnser help 1⁄3 + 1⁄6 + 3⁄4

k0ka [10]

The answer should be 5 over 4

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3 years ago

Read 2 more answers

Plzz answer me question 4. plzzz help me asap!​

Plzz answer me question 4. plzzz help me asap!