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11Alexandr11 [23.1K]

3 years ago

9

The local park has 4 bike racks. Each bike rack can hold 15 bikes. There are 16 bikes in the bike racks. What expression shows t

he total number of empy spaces in the bike racks?

1 answer:

Step2247 [10]3 years ago

5 0

44 that's a tricky question at first i thought it was -1 lol

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The image of the ant is 9 times the ant's actual size and has a length of 1.8 cm.

Rom4ik [11]

Answer:

0.2 is the correct asnwer because you divide 1.8 by 9

Step-by-step explanation:

I hope this helps you:) Please mark brainliest if correct:)

Stay safe, God bless and happy studying!

4 0

3 years ago

When they are both racing on hoverboards, Victoria is 3 times as fast as her brother Max. When she is on foot, she is 3 times sl

NARA [144]

Answer:

Race completed in 48 minutes.

Step-by-step explanation:

Let the speed of Max on hoverboard is = x

Then as per question speed of Victoria on hoverboard = 3x

Now it has been given in the question that speed of Victoria on foot is 1/3 of the speed of Max on hoverboard that will be = x/3

Now we will form the equation.

As we know the formula speed = distance/time

Let the time taken by both to complete the race be t minutes.

Distance covered by Victoria in 12 minutes + Distance covered by Victoria on foot = distance covered by Max on hoverboard

Then the equation will be

12(3x)+(1/3)x(t-12)=xt

$36x+\frac{xt}{3}-4x=xt$

$x(36+\frac{t}{3}-4)=xt$

$36+\frac{t}{3}-4=t$

$32=t-\frac{t}{3}$

$\frac{2t}{3}=32$

$t=\frac{(32)3}{2}=48$

So 48 minutes it took to complete the race.

4 0

3 years ago

Read 2 more answers

A person standing at the edge of a cliff throws a rock upward from a height of 180ft above ground level with an initial velocity

taurus [48]

Answer: 8.73 ft/s

Step-by-step explanation:

We have the following equation that models the motion of the rock:

$h(t)=-16t^{2}+64t+180$

Where $h(t)$ is the height of the rock at a time $t$ .

Now, if $h(t)=48 ft$ we can find $t$ and then the velocity of the rock at that height:

$48=-16t^{2}+64t+180$

Rearranging the equation:

$-16t^{2}+64t+132=0$

Multiplying the equation by -1:

$16t^{2}-64t-132=0$

Solving with the quadratic formula $t=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}$ , where $a=16$ , $b=-64$ , $c=-132$ .

$t=\frac{-(-64)\pm\sqrt{(-64)^{2}-4(16)(-132)}}{2(16)}$

Choosing the positive result of the equation:

$t=5.5 s$

Since velocity $V$ is defined as the traveled distance $h(t)$ in a given time $t$ , we have:

$V=\frac{h(t)}{t}$

$V=\frac{48 ft}{5.5 s}$

$V=8.727 ft/s \approx 8.73 ft/s$ This is the velocity of the rock at the height of 48 feet

7 0

3 years ago

−15(x−4)=−2<br><br> Hurry! Brainliest if right!

devlian [24]

Step-by-step explanation:

The answer is 62/15.

I can't explain it bc I'm taking a test rn but still-

6 0

3 years ago

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Evaluate this expression for x=2 and y=5.

bija089 [108]

Answer:

B

Step-by-step explanation:

Substitute the given values for x and y into the expression

$\frac{20}{5}$ - $\frac{8}{2}$ + $\frac{3(2)(5)}{2+5}$

= 4 - 4 + $\frac{30}{7}$

= 0 + $\frac{30}{7}$

= $\frac{30}{7}$ = 4 $\frac{2}{7}$

8 0

4 years ago