All categories

3 years ago

If 8 boards are stacked on top of each other and each board is 2 1/4 inches thick, how high is the stack?

Mathematics

2 answers:

Zepler [3.9K]3 years ago

4 0

8 x 2 1/4 = 18

the stack is 18 in. thick.

Hope this helps!!
~Kiwi

Nesterboy [21]3 years ago

3 0

It's the same as 2 1/4 times 8. There's an image to show why. An easy way to mentally solve it is to do 2•8=16 first, and then 8/4=2, 16+2=18. I hope this helped!!❤️

You might be interested in

Use the graph to estimate the x- and y-intercepts.

mrs_skeptik [129]

Answer:

x- intercept is 6 y- intercept is -18

Step-by-step explanation:

Just use the graph, this graph is hard to get the answer but you just have to estimate.

7 0

3 years ago

Which of the following theorems verifies that ABC~WXY?

Bumek [7]

Answer:

The correct answer is option B. AA

Step-by-step explanation:

Given two triangle:

$\triangle ABC$ and $\triangle WXY$ .

The dimensions given in $\triangle ABC$ are:

$\angle A = 27^\circ\\\angle B = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle A+\angle B+\angle C = 180^\circ\\\Rightarrow 27+90+\angle C=180^\circ\\\Rightarrow \angle C = 63^\circ$

The dimensions given in $\triangle WXY$ are:

$\angle Y = 63^\circ\\\angle X = 90^\circ$

We know that the sum of three angles in a triangle is equal to $180^\circ$ .

$\angle W+\angle X+\angle Y = 180^\circ\\\Rightarrow \angle W+90+63=180^\circ\\\Rightarrow \angle W = 27^\circ$

Now, if we compare the angles of the two triangles:

$\angle A = \angle W = 27^\circ\\\angle B = \angle X= 90^\circ\\\angle C = \angle Y= 63^\circ$

So, by AA postulate (i.e. Angle - Angle) postulate, the two triangles are similar.

$\triangle ABC \sim \triangle WXY$ by AA theorem.

So, correct answer is option B. AA

7 0

3 years ago

A car’s stopping distance in feet is modeled by the equation d(v)=2.15vsquared over 58.4f, where v is the initial velocity of th

frutty [35]

According to your description, you can simply plug in all the numbers:

d(47) = 2.15 * 45^2 / (58.4*0.34) = 219.27 m

3 0

3 years ago

Read 2 more answers

What is the rate of change seen in the graph below?

Harrizon [31]

Answer:

Step-by-step explanation:

the answer is 0

because it neither rises nor fall

6 0

2 years ago

Read 2 more answers

Logan used 12 centimeters of tape to wrap 4 presents. How much tape will Logan need in all if he had wrap 8 presents? Assume the

inn [45]

Answer:

24 centimeters

Step-by-step explanation:

6 0

3 years ago