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Margarita [4]
2 years ago
7

If a cross country runner covers a distance of 287 meters in 154 seconds what is her speed?

Mathematics
1 answer:
Monica [59]2 years ago
6 0

Answer:

1.86

Step-by-step explanation:

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PLS HELP DUE IN 1 HOUR <br><br> write the expression using positive exponents <br> 1/3^-5
drek231 [11]
<h3>Answer:   3^5</h3>

Explanation:

The rule used is \left(\frac{a}{b}\right)^{-c}  = \left(\frac{b}{a}\right)^{c}

That rule says to go from a negative exponent to a positive exponent, we apply the reciprocal of the fraction.

So,

\left(\frac{1}{3}\right)^{-5} = \left(\frac{3}{1}\right)^{5} = 3^5

4 0
3 years ago
The slope of the line that contains the points (2, -7) and (-2, 5) is -3. What is the y-intercept?
kramer

Answer:

C. -1

Step-by-step explanation:

Find the y intercept by plugging in the slope and a given point into the equation y = mx + b. Then, solve for b:

y = mx + b

-7 = -3(2) + b

-7 = -6 + b

-1 = b

So, the y intercept is -1.

The correct answer is C. -1

4 0
2 years ago
Jada is visiting New York City to see the Empire State building. She is 100 feet away when she spots it. To see the top, she has
Ilia_Sergeevich [38]
(sin(86.10) * 100 ) / (sin(3.90)) = 1466.85 ft.

(3.90 is the angle of the top to Jada. (180 - (86.1+90))
7 0
3 years ago
If anyone knows the answer to this can you help me
Murljashka [212]

Answer:

<h3>             C.    y + 7 = -7(x - 3)</h3>

Step-by-step explanation:

The equation of a line is:

                          y - y₀ = m(x - x₀)

where <em>m</em> is the slope and <em>(x₀, y₀)</em> is the point which the line passes through

The product of slopes of two perpendicular lines is  -1

so if given lines slope is ¹/₇ them:

     ¹/₇·m = -1

        m = -7

(3, -7)     ⇒    x₀ = 3,  y₀ = -7

Therefore:

               y - (-7) = -7(x - 3)

                <u> </u><u>y + 7 = -7(x - 3) </u>

4 0
3 years ago
A cell phone measure 10 cm long,6 cm long,and 2cm high what is the volume of the cell phone
vaieri [72.5K]
The are of the cell phone is 184 hope this helped
3 0
2 years ago
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