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Nutka1998 [239]

3 years ago

12

What is -21/30 as a decimal

2 answers:

Brut [27]3 years ago

6 0

To convert -21/30 in the decimal form, we will neglect the negative sign and start dividing it in the normal manner and after the answer comes we will reunite the negative sign with the answer.

<em>Kindly refer to the attachment for division. </em>

Hence, -21/30 = -0.7

user100 [1]3 years ago

4 0

Answer:

Your answer is 0.7

Step-by-step explanation:

step one=21/30

Step two=21÷30

Answer=0.7

I hope that will help you

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The circumference of an NBA-approved basketball is 29.6 in. Given that the radius of Earth is about 6400 km, how many basketball

ella [17]

Answer:

167,886,383 basketballs

Step-by-step explanation:

We are asked to find how many basketballs would take to circle around the equator. We have given the earth's radius. So, we need the formula to obtain it's perimeter. Thus:

$Perimeter = Pi*diameter [m]\\Where Pi = 3.14$

Earth's diameter is simply radius*2. It means:

$P= 3.14*6400*2 = 40,192 [km]$

On the other hand, we have a basketball crcumference; however, we need to obtain its diameter so that we can later calculate how many basketballs fit on earth's equator by simply dividing earth's circumference by a basketball's diameter.

Diameter of a basketball:

$D= Perimeter /Pi [m]$

We need to change units to fit in the international system.

29.6 in to cm = $29.6*2.54 = 75.184 [cm]$

Then:

$Diameter=75.184/3.14 = 23.94 [cm]$

We have to convert earth's perimeter in km to cm:

$Equator=40192[km]*100000=4,019,200,000 [cm]$

Finally, dividing total earth's circumference by a basketball diameter:

$Totalbasketballs=4,019,200,000/23.94= 167,886,383 [basketballs]$

8 0

3 years ago

Please help really fast. I will give brainliest

kifflom [539]

Answer:

D

Step-by-step explanation:

that should be the answer

8 0

3 years ago

Read 2 more answers

The daily profit P (in thousands of dollars) from the sale of televisions is a function of the number x of televisions sold (

scZoUnD [109]

Answer:

The break-even sales amounts is 36 or 224.

Step-by-step explanation:

Consider the provided function.

$P= -5x^2 + 13x - 4$

Where x is the number of televisions sold (in hundreds) and P is the profit.

We need to calculate the break-even sales amounts.

the break-even sales amounts is the sales amounts that result in no profit or loss.

That means substitute P=0 and solve for x.

$-5x^2 + 13x - 4=0$

$5x^2-13x+4=0$

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Substitute a=4, b=-13 and c=4 in above formula.

$x_{1,\:2}=\frac{-\left(-13\right)\pm \sqrt{\left(-13\right)^2-4\cdot \:5\cdot \:4}}{2\cdot \:5}$

$x_{1,\:2}=\frac{13\pm\sqrt{169-80}}{10}$

$x_{1,\:2}=\frac{13\pm\sqrt{89}}{10}$

$x=\frac{13+\sqrt{89}}{10},\:x=\frac{13-\sqrt{89}}{10}\\x\approx2.243, \ or\ x\approx 0.357$

Therefore, the break-even sales amounts is 36 or 224.

7 0

3 years ago

Which expression correctly shows the difference between the product of 11 and 7 and the sum of 6 and 10?

Minchanka [31]

9514 1404 393

Answer:

d: (11×7) - (6 + 10)

Step-by-step explanation:

"the product of 11 and 7" is 11×7.

"the sum of 6 and 10" is (6 +10).

The difference between the product and the sum is ...

(11×7) -(6 +10) . . . . . matches choice D

5 0

3 years ago

Evaluate 4(8-(4×2)+1<br><br><br><br><br>pls help

densk [106]

<span>4<span>(<span><span>8−<span><span>(4)</span><span>(2)</span></span></span>+1</span>)</span></span><span>=<span><span>(4)</span><span>(<span><span>8+<span>−8</span></span>+1</span>)</span></span></span><span>=<span><span><span><span>(4)</span><span>(8)</span></span>+<span><span>(4)</span><span>(<span>−8</span>)</span></span></span>+<span><span>(4)</span><span>(1)</span></span></span></span><span>=<span><span>32−32</span>+4</span></span><span>=<span>4</span></span>

3 0

3 years ago

Read 2 more answers