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zhuklara [117]
3 years ago
12

20 equals more than a number y

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

20 > y

Step-by-step explanation:

20 is greater than y.

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3x - 4y = 7
Alina [70]
      3x - 4y = 7
    -(3x + 2y = -5)

=     0 - 6y = 12
          -6y = 12
             y = -2
The resulting equation would be y = -2.

4 0
3 years ago
Read 2 more answers
When the sun is at a certain angle in the sky, a 50-foot building will cast a -foot shadow. What is the length of the shadow in
Serhud [2]

Answer:

0.40 foot

Step-by-step explanation:

In the first case, a 50 - foot building casts a- foot shadow (1-foot). Let the angle of elevation of the sun from the shadow be represented by θ.

Then:

Tan θ = \frac{opposite}{adjacent}

Tan θ = \frac{50}{1}

Tan θ = 50

⇒ θ = Tan^{-1} 50

      = 88.8542

      = 88.85^{o}

The angle of elevation is approximately 88.85^{o}.

For a 20-foot pole,

Tan θ = \frac{opposite}{adjacent}

Tan 88.85^{o} = \frac{20}{x}

x = \frac{20}{Tan 88.85^{o} }

 = 0.4015

 = 0.40 foot

The length of the shadow of the pole is 0.40 foot.

4 0
3 years ago
Jaime en un joven que vive en puyo con su padre. A jaime le gusta cosechar chonta con su padre los sabados en la mañana jaime ha
xenn [34]

Answer:

\large \boxed{\text{23 s}}

Step-by-step explanation:

Jaime is at point A and wants to get across the river to Point B.

They must head upstream towards Point C.

1. Calculate the net speed across the river.

∆ABC is a right triangle, so

\begin{array}{rcl}AB^{2} + BC^{2} & = & AC^{2} \\AB^{2} +10^{2} & = & 12^{2} \\AB^{2}+100& = & 144 \\AB^{2}& = & 44\\AB & = & \sqrt{44}\\& = & 2\sqrt{11}\\& \approx &\textbf{6.633 m/s}\\\end{array}

2. Calculate the time to cross the river

\text{Time} = \text{150 m} \times \dfrac{\text{1 s}}{\text{6.633 m}} \approx \textbf{23 s}\\\\\text{It will take $\large \boxed{\textbf{23 s}}$ to cross the river.}

7 0
3 years ago
What is the exact circumstance of circle with 16 in.<br><br>8in<br>16in<br>32in<br>48in​
rusak2 [61]

The answer is c=50.272, for other problems like this use the formula: The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle).

5 0
3 years ago
You are putting a fence around a square outdoor stage with an area of 289 square feet. What is the length of one side of the sta
nikdorinn [45]
17 because the square root of 289 is 17
6 0
3 years ago
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