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maxonik [38]
3 years ago
12

1) through: (2,0), slope = -4/5

Mathematics
1 answer:
fenix001 [56]3 years ago
3 0

Step-by-step explanation:

Given:

(2,\:0)=(x_1,\:y_1) \:\&\: m = - \frac{4}{5}

Equation of line in slope point form is given as=

y - y_1 = m(x-x_1)  \\  \therefore \: y - 0 =   - \frac{4}{5}(x - 2)  \\  \therefore \: y =   - \frac{4}{5}(x - 2)  \\ \therefore \: 5y =  - 4(x - 2) \\  \therefore \: 5y =  - 4x  + 8 \\ \therefore \: 5y  + 4x   - 8 = 0 \\\therefore \: 4x + 5y - 8 = 0 \\ which \: is \: the \:equation  \:of \:  required \:  \\ line.\:

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Select the equation that is true for all values of x?
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As written, this is

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The longest side of an acute triangle measures 30 inches. The two remaining sides are congruent, but their length is unknown.
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George and Paul use a metal alloy that is 18.1% copper to make jewelry. How many ounces of an alloy that is 14% copper must be m
ella [17]

Answer:

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

Step-by-step explanation:

Each ounce of the 14% copper contains 0.14 ounce of pure copper.

Each ounce of the 23% copper contains 0.23 ounce of pure copper.

Each ounce of the 18.1% copper contains 0.181 ounce of pure copper.

Use x ounces of the 14% and y ounces of the 23% to make 90 ounces of 18.1% alloy.

x+y  = 90

y = 90-x

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x = 49

y = 90-x = 41

Use 49 ounces of the 14% allow and 41 ounces of the 23% alloy.

7 0
3 years ago
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