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jekas [21]
3 years ago
11

Use the Order of Operations to evaluate this expression

Mathematics
1 answer:
Doss [256]3 years ago
5 0
Unfortunately, I don’t knooow :(
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(x-2)e2/3=49<br><img src="https://tex.z-dn.net/?f=%28x%20-%202%29%20%5E%7B2%20%5Cdiv%203%7D%20%20%3D%2049%20" id="TexFormula1" t
fredd [130]

\bf (x-2)^{2\div 3}=49\implies (x-2)^{\frac{2}{3}}=7^2\implies \stackrel{\textit{raising both sides by }\frac{3}{2}}{\left( (x-2)^{\frac{2}{3}} \right)^{\frac{3}{2}}=(7^2)^{\frac{3}{2}}} \\\\\\ (x-2)^{\frac{2}{3}\cdot \frac{3}{2}}=7^3\implies (x-2)^1=7^3\implies x=7^3+2\implies x=345

4 0
3 years ago
The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe
mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

H_0=288 feet

V_0=48 feet

h(t)=288+48t-16t^2

Re-arrange the terms from greatest degree to smallest degree.

h(t)=-16t^2+48t+288

We can solve it by applying quadratic formula,

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Here a = –16, b = 48, c = 288

$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}

$t=\frac{-48\pm \sqrt{2304+18432}}{-32}

$t=\frac{-48\pm \sqrt{20736}}{-32}

$t=\frac{-48\pm144}{-32}

Now, write find two t's using plus and minus operation.

$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}

$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}

t = –3 (or)   t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

8 0
2 years ago
What number is the same as 3 tens and 12 ones.​
Arlecino [84]

Answer:

42 because 3 tens is 30 and 12 ones is 12. so you do 30 + 12 = 42

5 0
3 years ago
Read 2 more answers
Cicily wants to estimate the answer to this problem to see if her answer is reasonable.
suter [353]
I believe that the answer is A- 8600-5300
Hope this helps!
3 0
3 years ago
What is 7.5% of 80? Round to the hundredth
AfilCa [17]

7.5 percent equals to 7.5/100
Hence ,
7.5 × 80 = 6

5 0
3 years ago
Read 3 more answers
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