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3 years ago

Kate buys 2 lollies and 5 chocices for £6.50

Mathematics

1 answer:

kirill [66]3 years ago

7 0

Answer:

50p

Step-by-step explanation:

pls mark brainliest! have a lovely day

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Your doctor prescribes you to take 400 milligrams of medicine every 8 hours. How many ounces of medicine do you take in a day?

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1,200 milligrams...thats the answer

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3 years ago

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3 years ago

Solve the system of equations by finding the reduced row echelon form of the augmented matrix. Write the solutions for x and y i

Gwar [14]

Answer:

The solutions for the given system of equations are:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

Step-by-step explanation:

Given the equation system:

$\left \{ {{3x+y+4z=-3} \atop {-x+y+4z=17}} \right.$

We obtain the following matrix:

$\left[\begin{array}{cccc}3&1&4&-3\\-1&1&4&17\end{array}\right]$

Step 1: Multiply the fisrt row by 1/3.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\-1&1&4&17\end{array}\right]$

Step 2: Sum the first row and the second row.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&\frac{4}{3} &\frac{16}{3}&16\end{array}\right]$

Step 3: Multiply the second row by 3/4.

$\left[\begin{array}{cccc}1&\frac{1}{3} &\frac{4}{3}&-1\\0&1 &4&12\end{array}\right]$

Step 4: Multiply the second row by -1/3 and sum the the first row.

$\left[\begin{array}{cccc}1&0 &0&-5\\0&1 &4&12\end{array}\right]$

The result of the reduced matrix is:

$\left \{ {{x=-5} \atop {y+4z=12}} \right.$

This is equal to:

$\left \{ {{x=-5} \atop {y=12-4z}} \right.$

These are the solutions for the system of equations in terms of z, where z can be any number.

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3 years ago

Can someone please help me with this question?

irinina [24]

Answer:

I believe the lines are the 2nd, 4th, and 5th

Step-by-step explanation:

I don't have a clear explani=ation and you might get confused when I try to explain it :/

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Triangle is 18 in high 36 in across ....how much fabric to make 5

Korolek [52]

Answer:

A=324

Step-by-step explanation:

formual to Solve for area

A=h*b/2 so 18*36/2= a = 324

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3 years ago