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3 years ago

Solve this equation for x. 2/3(X -7)= -2

Mathematics

2 answers:

White raven [17]3 years ago

6 0

Answer:

x=4

Step-by-step explanation:

2/3(x-7)=-2

Multiply both sides by 3/2

x-7=-3

move constant to the right

x=-3+7

calculate

x=4

velikii [3]3 years ago

3 0

Answer:

x=4 hope that helps

Step-by-step explanation:

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What is the y intercept of f(x)=(1/2)*

9966 [12]

Answer:

B. (0,0)

Step-by-step explanation:

The y-intercept of the equation f(x) = 1/2x lies on the y-axis.

This means we need to set x = 0 and solve for y

1/2(0) = 0

Therefore, (0,0) is the y-intercept of this equation.

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3 years ago

Ricky had 21 video games. He traded in 16 games for store credit. How many video games does Ricky have left?

Margaret [11]

21-16= 5
21 minus 16 equals 5

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2 years ago

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How do i factor (10x^2-25x-15)

Otrada [13]

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2 years ago

For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

2 years ago

Given sin x=13/85 and tan x=13/84 .

olga55 [171]

ANSWER:

We know that,

tanΘ = sinΘ/cosΘ

cosΘ = sinΘ/tanΘ

So, cosΘ = 13/85 ÷ 13/84

13/85 × 84/13
84/85.

7 0

3 years ago