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2 years ago

Help againn!!!!! Will give 15 points

Mathematics

2 answers:

suter [353]2 years ago

6 0

Answer:

1. 8x+10

2. 25x-7

Step-by-step explanation:

Ludmilka [50]2 years ago

5 0

Answer:

1) 8x + 10

2) 25x - 7

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Which ordered pair (x, y) is a solution to given system of linear equations?

patriot [66]

Answer:

$(\frac{1}{6}, \frac{1}{2})$ or $(0.167,0.5)$

Step-by-step explanation:

Given

$3x + y =1$

$15x + y = 3$

Required

Determine the solution

We'll solve using elimination method.

Subtract the first equation from the second:

$15x + y = 3$

$3x + y =1$

$--------$

$15x - 3x + y - y = 3 - 1$

$15x - 3x = 3 - 1$

$12x = 2$

Make x the subject:

$x = \frac{2}{12}$

$x = \frac{1}{6}$

$x =0.167$

Substitute $\frac{1}{6}$ for x in the first equation

$3x + y =1$

$3(\frac{1}{6}) + y = 1$

$\frac{1}{2} + y = 1$

Make y the subject

$y = 1 -\frac{1}{2}$

$y = \frac{2-1}{2}$

$y = \frac{1}{2}$

$y = 0.5$

Hence, the solution is:

$(\frac{1}{6}, \frac{1}{2})$ or $(0.167,0.5)$

8 0

2 years ago

The slope-intercept form of an equation is y = mx + b. rewrite the equation in terms of the slope m

PSYCHO15rus [73]

Answer:

$m=\frac{y-b}{x}$

Step-by-step explanation:

So we have the equation:

$y=mx+b$

And we want to write it in terms of m.

So, let's subtract b from both sides:

$y-b=mx$

Now, let's divide both sides by x:

$m=\frac{y-b}{x}$

And we're done!

3 0

3 years ago

The table below shows the relationship between the number of teaspoons of baking powder in a mix and the height of fudge brownie

rosijanka [135]

Answer:

Option A. $y=0.28x+0.75$

Step-by-step explanation:

Let

y -----> the height of fudge brownies in centimeters

x ----> teaspoons of baking powder

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

take the points

(5,2.15) and (6,2.43)

substitute the values

$m=\frac{2.43-2.15}{6-5}$

$m=\frac{0.28}{1}=0.28$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=0.28$

$(x1,y1)=(5,2.15)$

substitute

$y-2.15=0.28(x-5)$

Isolate the variable y

$y-2.15=0.28x-1.4$

$y=0.28x-1.4+2.15$

$y=0.28x+0.75$

6 0

2 years ago

Read 2 more answers

Evaluate the following expression:<br> 3 + 2(4 + 7)

Romashka [77]

Answer:

Step-by-step explanation:

Let's simplify this, while still doing it.

3 + 2(4 + 7)

3 + 2(11)

3 + 22

25.

the answer is 25!!

5 0

2 years ago

Read 2 more answers

A certain state uses the following progressive

mart [117]

Answer: 52

Step-by-step explanation: it might not be it. GOD BLESS.

7 0

9 months ago