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k0ka [10]
4 years ago
15

It tok kenny 3/4 of an hour to ride his bike from school to the park. then it took kenny 1 2/3 hours to ride from the park to hi

s home for what amount of time
Mathematics
1 answer:
lesya692 [45]4 years ago
6 0
3/4 is 45 minutes
1 2/3 is 60+ 40= 100 min
Answer 55 min longer from park to home
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Determine if the function represents exponential growth or decay. <br><br> Y=-4*(1/2)
amm1812

Exponential Decay because it’s decaying by .5 which is smaller than 1

6 0
3 years ago
Evaluate UV if possible.
Mnenie [13.5K]

Answer: B

Step-by-step explanation:

Multiply U and V:

\begin{pmatrix}-9&1&0\\ \:4&0&2\\ \:0&1&5\end{pmatrix}\begin{pmatrix}2\\ \:-2\\ \:1\end{pmatrix}

\mathrm{Multiply \ the \ rows \ of \ the \ first \ matrix \ by \ the \ columns  \ of \ the \ second \ matrix:}

\begin{aligned}&\left(\begin{array}{ccc}-9 & 1 & 0\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=(-9) \cdot 2+1 \cdot(-2)+0 \cdot 1 \\&\left(\begin{array}{ccc}4 & 0 & 2\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=4 \cdot 2+0 \cdot(-2)+2 \cdot 1 \\&\left(\begin{array}{lll}0 & 1 & 5\end{array}\right)\left(\begin{array}{c}2 \\-2 \\1\end{array}\right)=0 \cdot 2+1 \cdot(-2)+5 \cdot 1\end{aligned}

=\begin{pmatrix}\left(-9\right)\cdot \:2+1\cdot \left(-2\right)+0\cdot \:1\\ 4\cdot \:2+0\cdot \left(-2\right)+2\cdot \:1\\ 0\cdot \:2+1\cdot \left(-2\right)+5\cdot \:1\end{pmatrix}

\mathrm{Simplify\:each\:part:}

=\begin{pmatrix}-20\\ 10\\ 3\end{pmatrix}

Therefore, the correct answer is B

5 0
3 years ago
PLEASE ANSWER ASAP !!!!!!!!!!!!!!!!!!! WILL GET BRAINLEST IF CORRECT!!!!!!!!!!!!!!!!!!!!!!
tatiyna

Answer:

5

Step-by-step explanation:

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5 0
3 years ago
The length of a rectangle is twice it’s width.The length is 12cm.Work out the area of the rectangle
aliina [53]

Answer:


Step-by-step explanation:

As with all word problems we first have to convert it to an equation or equations.

L = length of the Rectangle and W = its width

So L = 2 * W

A = area of the rectangle which is 128 cm^2

So    A = L * W = 128 cm^2

substitute 2W for L from the 1st equation to give    A = 2 * W * W = 2 * W^2 = 128 cm^2

Thus    W^2 = 64 cm^2

finally  W = 8 cm  and therefore  L = 2 * W = 16 cm

The perimeter P = 2 * (L+W) = 2* (8cm + 16cm) = 2 * 24cm = 48 cm

6 0
3 years ago
△HES ≅ △PBN, HE = 3.9 cm, SB = 0.9 cm, and NS = 4.5 cm<br><br> What is the length of ES ?
Natali5045456 [20]
 ns +sb = 5.4 cm

sb = en so en can be plugged in for sb

therefor es = 5.4
3 0
3 years ago
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