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borishaifa [10]
3 years ago
6

8th grade teachers and students from M.I.T went on a field trip to an zoo. Tickets

Mathematics
1 answer:
alukav5142 [94]3 years ago
6 0

As there are multiple answers going with trial and error seems good in this case.

A

5.00 + 5.00 + 5.00 + 5.00 = 20.00

3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 31.5

20.00 + 31.5 = 51.5

B

5.00 + 5.00 + 5.00 + 5.00 = 20.00

3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 35.00

20.00 + 35.00 = 55.00

C

5.00 + 5.00 + 5.00 = 15.00

3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 31.5

15.00 + 31.5 =46.5

Knowing that for the first one all A,B, and C were wrong we can determine that D is the answer. But wait if I made one mistake and didn't understand if $156.5 is equivalent to $156.50 that would mean A is correct.

Always recheck your answers and good luck,

Jon

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Decrease £19064.67 by 9.5%<br> Give your answer rounded to 2 DP.
alina1380 [7]

Answer:

New amount (decrease) = £17253.53

Step-by-step explanation:

<u>Given the following data;</u>

Amount = £19064.67

Percentage = 9.5%

To find the percentage decrease;

Percentage \; cost = \frac {9.5}{100} * 19064.67

Percentage \; cost = 0.095 * 19064.67

Percentage cost = £1811.14

New amount (decrease) = Original amount - percentage cost

Substituting into the equation, we have;

New amount (decrease) = £19064.67 - £1811.14

<em>New amount (decrease) = £17253.53</em>

6 0
3 years ago
A satellite flies 28912 miles in 5.56 hours. How many miles has it flown in 12.93<br> hours?
UNO [17]
67,239; 28912/5.56= 5,200 miles per hour and then multiply that by 12.93
7 0
3 years ago
What is the matrix for y+x=4 and 2x-3y=3
andrew11 [14]
Given equations:

x+y = 4;
2x-3y = 3;

Matrix form would be:

\left[\begin{array}{cc}1&1\\2&-3\end{array}\right]   \left[\begin{array}{c}x\\y\end{array}\right] =   \left[\begin{array}{c}4\\3\end{array}\right]

-i
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Write (8a^-3)^-2/3 in a simplest form.
MrRa [10]

For this case we have the following expression:

(8a^{-3})^{-\frac{2}{3}}

For power properties we have:

(8^{-\frac{2}{3}} a^{-3*-\frac{2}{3}})

Rewriting the exponents of the expression we have:

(8^{-\frac{2}{3}} a^{3*\frac{2}{3}})

(8^{-\frac{2}{3}} a^2)

(\frac{1}{8^{\frac{2}{3}}} a^2)

Using the cubic root we have:

(\frac{1}{\sqrt[3]{8^2}} a^2)

(\frac{1}{\sqrt[3]{64}} a^2)

(\frac{1}{\sqrt[3]{4^3}} a^2)

Simplifying the expression we have:

(\frac{1}{4} a^2)

Answer:

The equivalent expression is given by:

(\frac{1}{4} a^2)

8 0
3 years ago
Read 2 more answers
On a circular playground, the distance from its center to the edge of the playground is 36 feet. What is the approximate circumf
hammer [34]
B
36 is the radius so
The formula for circumference is radius times two and take that answer times pi
So 36×2 is 72 and 72 times pi is 226.194671058
4 0
3 years ago
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