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Orlov [11]
3 years ago
8

5x + 4y = 12 3x + 8y = -32 Substitution

Mathematics
2 answers:
11Alexandr11 [23.1K]3 years ago
7 0
X would equal 8 and y would equal -7
r-ruslan [8.4K]3 years ago
3 0

Answer:

x would equal 8 and y would equal -7

i know that i did not copy

Step-by-step explanation:

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Select the correct answer from the drop-down menu.<br> Fill in the missing number in the equation.
noname [10]

Answer:

8

Step-by-step explanation:

a A + b A where A is a matrix and a and b are scalars

( a+b) A

3+5 \left[\begin{array}{cc}-1&2\\4&-5\end{array}\right] = 8\left[\begin{array}{cc}-1&2\\4&-5\end{array}\right]

         

7 0
3 years ago
A rectangular swimming pool is twice as long as it is wide. A small concrete sidewalk surrounds the pool and is a constant 2 fee
Naddika [18.5K]

Answer:

The dimensions of the pool are:

Width: 8.944 feet

Length: 17.888 feet

Step-by-step explanation:

From Geometry, the area of a rectangle (A), measured in square feet, is determined by the following equations:

A = w\cdot l (1)

Where:

w - Width, measured in feet.

l - Length, measured in feet.

If we know that w = x, l = 2\cdot x and A = 160\,ft^{2}, then we get the following second order polynomial:

2\cdot x^{2}-160 = 0 (1)

And we solve the expression for x:

2\cdot x^{2} = 160

x^{2} = 80

x = \sqrt{80}\,ft

x \approx 8.944\,ft

Then, the dimensions of the pool are, respectively:

w \approx 8.944\,ft and l \approx 17.888\,ft

5 0
3 years ago
You have $1,000 to invest. You invest 25% in a Money Market account, 50% in stocks, and 25% in bonds. What is the dollar amount
kirill115 [55]

Answer:

you have $250 in market and bonds and $500 in stocks.

step-by-step explanation:

you split 1,000 into 4 quarter and take two of those quarters and there is what you invested in stocks and take one quarter for market and one quarter for bonds.

7 0
3 years ago
When rolling a fair number cube with numbers 1 through 6, what is the probability of
Gnom [1K]

Answer:

B

Step-by-step explanation:

The total number of faces on a cube is 6.

The numbers under 3 are 1 and 2.

So numbers 1 and 2 give success.

P(<3) = 2/6

P(<3) = 1/3

The answer is B.

3 0
3 years ago
Read 2 more answers
2. A bakery makes muffins and cookies. Muffins are sold 18 to a box and cookies are sold 25 to a bag. They do not sell individua
Ksivusya [100]
A) if 18 muffins = 1 box,
1020 muffins = 1020/18 boxes
= 56.67 boxes

So they used 56 full boxes.

b) if 25 cookies = 1 bag
2820 cookies = 2820/25 bags
= 112.8 bags

So they used 112 full bags.

c) the remainders from a and b represent muffins and cookies left over.
8 0
2 years ago
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