2 years ago

Question 3/11 i’ll mark brainliest

Mathematics

1 answer:

madam [21]2 years ago

8 0

Answer:

The answers are -1/3 and 3 or -3

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Factor this polynomial completely. 6x2 + 7x - 20

Papessa [141]

It’s the third answer
(2x + 5) x ( 3x -4)

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2 years ago

3. For the equation-4y = &r, what is the constant of variation? (1 point) ООО 02

alexandr1967 [171]

Answer:

3).

$- 4y = 8x \\ \frac{y}{x} = \frac{8}{ - 4} \\ \frac{y}{x} = - 2 \\ y = - 2x \\ hence \: constant \: is \: - 2$

4).

$y \alpha x \\ y = kx \\ where \: k \: is \: the \: constant \: of \: proportionality \\ when \: y = 24 \: and \: x = 8 \\ substitute \: in \: y = kx \\ 24 = 8k \\ k = \frac{24}{8} \\ k = 3 \\ value \: of \: constant = 3$

If it was by 10, k = 3 by 10

k = 30

5).

$general \: equation \: of \: line \\ y = mx + c \\ but \: m = \frac{2}{3} \: and \: c = 9 \\ substitute \: for \: m \: and \: c \: in \: y = mx + c \\ y = \frac{2}{3} x + 9 \\ alternatively \\ 3y = 2x + 27$

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2 years ago

Quincy bought necklaces for $8.00 each. At what price would he need to sell them to make a 25% profit

Zepler [3.9K]

10 dollars. 8÷4=2. 8+2=10

25%= 4

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2 years ago

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Write an equation in slope-intercept form for the line. Slope -2, passes through (-3,14)

LekaFEV [45]

Answer:

y=-2x +8

Step-by-step explanation:

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2 years ago

What is the answer to 2/5(10p-15)=14?

satela [25.4K]

Answer:

P = 5

Step-by-step explanation:

2/5(10p) - 2/5(15)= 14

20p/5 - 30/5= 14

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2 years ago