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Ratling [72]
3 years ago
11

Find the value of x,y and z

Mathematics
1 answer:
krek1111 [17]3 years ago
4 0

x=\sqrt{70}, y =\sqrt{21}, z=\sqrt{30}

Solution:

Given c = 3 and d = 10 – 3 = 7

<u>To find the value of y:</u>

y^2= 3\times 7

y^2= 21

Taking square root on both sides of the equation.

y=\sqrt{21}

<u>To find the value of x:</u>

x^2=7\times10

x^2=70

Taking square root on both sides of the equation.

x=\sqrt{70}

<u>To find the value of z:</u>

z^2=3\times10

z^2=30

Taking square root on both sides of the equation.

z=\sqrt{30}

Hence the value of x=\sqrt{70}, y =\sqrt{21}, z=\sqrt{30}.

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Answer:

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Step-by-step explanation:

In this question, we are asked to calculate the number of hamburgers and hotdogs sold by a company given the amount made by them and the total number of these snacks sold

We proceed as follows;

Let the amount of hotdogs sold be x and the amount of hamburgers sold be y.

We have a total of 300 snacks sold, mathematically;

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Now let’s look at the prices.

x number of hotdogs sold at $2, this give a total of $2x hotdogs

y number of hamburgers sold at $3, this give a total of $3y.

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This means we have two equations to solve simultaneously. From equation 1, we can say x = 300 -y

Now let’s insert this in the second equation;

2(300-y) + 3y = 780

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y = 780-600 = 180

Recall; x + y = 300

x = 300 -y

x = 300-180 = 120

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