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2 years ago

X=4y,2x+y=18 solve by substitution show all work

1 answer:

7 0

Here is the math, did it on paper, sorry it’s blue. just add parenthesis around the x in the second equation and add what x equals. then solve as PEMDAS.

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How can I solve this ?

Nostrana [21]

Multiply 2,500 by 1.50 which is B.

3 0

3 years ago

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The parking lot at a store has a width of 20 yards 2 feet and a length of 30 yards

Liula [17]

Answer:

I guess you are trying to find the perimeter of the parking lot.

the fomula is P= 2L+2W.

Step by step:

20yards( 2 ft )+ 30 yards +20 yards + 30 yards=

100 yards 2 ft.

I hope it's help.

5 0

3 years ago

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The ratio of boys to girls in a class is 5:3. There are 32 students in the class. How many students are boys?

yan [13]

Answer: There are 20 boys

Step-by-step explanation:

4 0

3 years ago

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The table below represents a linear function f(x) and the equation represents a function g(x):

Elza [17]

Answer:

(a) The slope of f(x) is greater than the slope of g(x)

(b) f(x) has a greater y intercept

Step-by-step explanation:

Given

$\begin{array}{cc}x & {f(x)} & -1&-9&0&-1&1&7 \ \end{array}$

$g(x) = 3x - 2$

Solving (a): Compare the slopes

The slope (m) of f(x) is calculated as;

$m = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

This gives:

$m = \frac{f(0) - f(1)}{0 - 1}$

$m = \frac{f(0) - f(1)}{- 1}$

Substitute values for f(0) and f(1)

$m = \frac{-1 - 7}{- 1}$

$m = \frac{-8}{- 1}$

$m = 8$

The slope of g(x) can be gotten using the following comparison

$g(x) = mx + b$

$m \to slope$

So:

$g(x) = 3x -2$

$m = 3$

$m_{f(x)} > m_{g(x)}$

Solving (b): Compare the y intercept

y intercept is when $x = 0$

From the table of f(x)

$f(0) = -1$

From the equation of g(x)

$g(x) = 3x -2$

$g(0) = 3*0-2$

$g(0) =-2$

6 0

3 years ago

I need help with math please

zvonat [6]

Answer:

Rational and integer i.e option A and C

3 0

3 years ago