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3 years ago

As a unit rate, 137.5 miles in 2.5 hours would be _____.

Mathematics

1 answer:

xxMikexx [17]3 years ago

7 0

<span>137.5 / 2.5 = 55(miles per hour)</span>

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Given f(x) =2x^2 - 3x+ 7, find (2.5)

BigorU [14]

Answer: 12

Step-by-step explanation:

f(2.5) = 2 x (2.5)^2 - 3 x 2.5 + 7

= 2 x 6.25 - 7.5 + 7

= 12.5 -7.5 + 7

= 5 + 7

= 12

Hope this helps!

7 0

3 years ago

Which statement correctly interprets this graph?

Marrrta [24]

D because none of the other statments are correct and it's the only one that lines up with the data.

8 0

3 years ago

A bicyclist rides 16 miles in 144 minutes. If she continues at this speed, how long will it take her to travel 36 miles?

mario62 [17]

16 -> 144
36 -> ?

(36x144) / 16 =324 min

6 0

4 years ago

Read 2 more answers

Sketch the following to help answer the question. Kite QRST has a short diagonal of QS and a long diagonal of RT. The diagonals

Troyanec [42]

Answer:

B. 8m

Step-by-step explanation:

Given:

The figure is a kite having points QRST.

It has short diagonal QS.

Long diagonal RT

Diagonal Intersect at point P.

side QR = 10m

Diagonal QS = 12m

We need to find the length of segment RP.

According Diagonal Property of kite.

It states that Diagonals of Kite perpendicularly bisects each other.

QP = PS

RP = PT

But QS = QP + PS

QS = QP + QP

QS = 2 QP

QP = $\frac{1}{2}$ QS = $\frac{1}{2}\times 12 = 6 m$

Now In Δ QPR

m∠ P = 90° (Diagonals of a kite is perpendicular to each other)

Now by Pythagoras theorem;

$QR^2 = QP^2+RP^2\\RP^2 = QR^2 - QP^2\\RP^2 = (10)^2- (6)^2\\RP^2 = 100 -36\\RP^2=64\\RP = \sqrt{64} =8\ m$

Hence the Length of segment RP is 8m.

7 0

3 years ago

The height of a rectangle is increasing at a rate of 11 centimeters per hour and the width of the rectangle is decreasing at a r

son4ous [18]

Answer:

-39 cm²/h

Step-by-step explanation:

The area of the rectangle is A = hw where h = height and w = width.

So the rate of change of area with respect to time is

dA/dt = d(hw)/dt

dA/dt = hdw/dt + wdh/dt

Given that at an instant h = 3cm, w = 8 cm and dh/dt = + 11 cm/h and dw/dt = -9 cm/h(negative since it is decreasing)

So, dA/dt = hdw/dt + wdh/dt

dA/dt = 3 cm × (+11 cm/h) + 8 cm × (-9 cm/h)

dA/dt = 33 cm²/h - 72 cm²/h

dA/dt = -39 cm²/h

8 0

3 years ago