3 years ago

Write each equation in standard form. y+1=4/5(x-3) y-8= -1/2(x+4)

Mathematics

1 answer:

Sphinxa [80]3 years ago

8 0

Here is the equations in standard form

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If u = 2i - j; v= -5i + 4j and w = j find 4u (v -w).

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Answer:

-40

Explanation:

Given

u = 2i - j; v= -5i + 4j and w = j

Required

4u(v-w)

4u = 4(2i) = 8i

v - w = -5i + 4j - j

v - w = -5i + 3j

Substitute

4u(v-w)

= 8i(-5i+3j)

= -40(i*i) [since i*i = 1]

= -40

Hence the required solution is -40

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3 years ago

A rental car company charges $77. 50 per day to rent a car and $0. 14 for every mile

muminat

77.5d + .14m

m = 425

.14 * 425 = 59.5

77.5d + 59.5 ≤ 230

77.5d ≤ 170.5

d ≤ 170.5/77.5

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