4x + y = 7 find the slope and write the equation PLEASE HELP!!!!!

Are the ratios 25/45 and 15/27 proportional? Explain.

ivanzaharov [21]

First ration we will divide by 5 (both numbers) and second one by 3 (again both numbers).

First ratio becomes (25:5)/(45:5) = 5/9
Second ratio becomes (15:3)/(27:3) = 5/9
Since we can simplify them in that way that both are the same that means they are proportional.

4 0

4 years ago

Plz help i need answer ASAP

Reika [66]

Answer:

y = 2x + 2

Step-by-step explanation:

<h3>Reading the graph!</h3>

The line shown in the figure cuts the y-axis 2 units above the origin, I.e.,

the point (0, 2)

The line also meets the x-axis two units before the origin, I.e.,

the point (-1, 0)

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<h3>Intercepts:</h3>

When a line meets both the axes (x-axis and y-axis), it forms intercepts.

There are two types of intercepts:

x-intercept (when the line meets the x-axis)
y-intercept (when the line meets the y-axis)

Each of their length is equal to their distance from the Origin(0, 0)

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<h3>Equation of a line (intercept form):</h3>

If the x-intercept is denoted by "a" and y-intercept by "b", the equation if such a line is given by:

$\boxed{ \mathsf{ \frac{x}{a} + \frac{y}{b} = 1 }}$

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<h3>Equation of the line in question:</h3>

x-intercept (a) = -1
y-intercept (b) = 2

$\implies \mathsf{ \frac{x}{( - 1)} + \frac{y}{2} = 1 }$

The sign of the denominator is taken by the numerator:

$\implies \mathsf{ - \frac{x}{1} + \frac{y}{2} = 1 }$

Taking LCM:

$\implies \mathsf{ \frac{ - 2x + y}{ 2} = 1 }$

Cross multiplying:

$\implies \mathsf{ - 2x + y = 2 }$

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Isolating y:

$\implies \mathsf{ \underline{ y = 2 + 2x }}$

That's the equation of the given line!

6 0

3 years ago

Please answer Correctly for brainly

qaws [65]

√70 = 8.37

It would be between 8 and 9.

7 0

3 years ago

A student is raising money for cancer research. A local business agrees to donate an additional 25% of what the student raises,

Artemon [7]

Answer:

$585

Step-by-step explanation:

Find 25% of $450:

$450 × 0.25 = $112.5 ⇒ this is how much money the business is donating.

Find 5% of $450:

$450 × 0.05 = $22.5 ⇒this is how much money the politician is donating.

Add those two amounts to the amount the student raised:

$450+$22.5+$112.5= $585

6 0

3 years ago

How to simplify x+9+1+3x and

maxonik [38]

Answer/Step-by-step explanation:

[1] x+9+1+3x

Add the numbers

x + 10 +3x

Combine like terms

4x+10

Common factor

2(2x+5)

Solution = 2(2x+5)

.............................................................................................................................................

[2] 5a+6c+2a+3c

Combine like terms

7a+6c+3c

Combine like terms

7a+9c

Solution = 7a + 9c

...............................................................................................................................................

[3] 5n+6m+3n

Combine like terms

8n + 6m

Rearrange terms

6m + 8n

Solution = 6m+8n

.............................................................................................................................................

[RevyBreeze]

5 0

2 years ago