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3 years ago

How to solve for equation: y = x squared - 15x + 14

Mathematics

1 answer:

vichka [17]3 years ago

5 0

Answer:

x=14, x=1

Step-by-step explanation:

View Image.

First factor the equation. Which numbers multiplies to 14 and adds up to -15? It's -14 and -1 so the equation is factored to (x-14)(x-1). I assume that you know how to do this.

Then set the values inside the parentheses equal to 0 and solve for x.

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CAN SOMEONE PLEASE HELP ME WITH THESE!!!

Darya [45]

Answer:

for the first pic

1=133

2=47

3=47

4=133

5=133

6=47

7=47

8=133

the next pic

2,3 is a corresponding angle

1,2 is a verticle angle

the third pic

1=153

2=27

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Anyone know these???

Schach [20]

So you correctly wrote that the slope is represented by Δy/Δx. The Greek capital letter delta means "change in," so we are looking at the change in y divided by the change in x. You might also hear this called "rise over run," because change in y is the vertical change (rise) and change in x is the horizontal change (run).

Now, to find the change in y and x, we need to take two points, $(x_1, y_1)$ and $(x_2, y_2)$ . We can then find the slope, m, as below:

$m= \dfrac{y_2-y_1}{x_2-x_1}$

So, as we're asked to state the slope and the behavior of the graph. Generally, if you see that as x increases, y increases, then the slope is positive. If y decreases, then the slope is negative. If y stays the same (constant), then the slope is zero. If x is constant, then the slope is undefined. Unfortunately, this worksheet also asks us to calculate the slope. So the equation above comes in handy!

1) let's take x = -1, y = -5 and x = 0, y = 3. We can write $(x_1,y_1)=(-1,-5)$ and $(x_2, y_2)=(0,3)$ (we can choose either point to be $(x_1,y_1)$ so long as we're consistent.

$m= \dfrac{3+5}{1}=8$

This is a positive (+) change.

2)

$m= \dfrac{-4+1}{2} = \dfrac{-3}{2}$

Negative (–).

3)

$m= \dfrac{-9+4}{-9+6}= \dfrac{-5}{-3}= \dfrac{5}{3}$

Positive (+).

4)

$m= \dfrac{8-3}{-1+5}= \dfrac{5}{4}$

Positive (+).

5)

$m= \dfrac{4-5}{2+2}= \dfrac{-1}{4}$

Negative (–).

6 0

3 years ago

The mass of one boulder is about 4,600 kilograms. The mass of a second boulder is about 4,800,000 grams. Which boulder has a gre

Julli [10]

The second boulder would have a greater mass because there are 1000 grams in a kilogram so 4,800,000 divided by 1,000 = 4,800kg which is greater than 4,600kg -have a nice day! :)

5 0

3 years ago

Triangle Theorems Quiz

aksik [14]

Answer:

4 is your answer

Step-by-step explanation:

in triangle

60+70+13x-2=180 sum of interior angle of the triangle is 180

128+13x=180

13x=180-128

x=52/13=4

7 0

3 years ago

If 24 marks is 60% what is full marks

Luda [366]

If 24 marks is 60 %, then full marks is 40

<em><u>Solution:</u></em>

Given that 24 marks is 60 %

We are asked to find the full marks

Let the full marks be "x"

So out of "x" marks, he has got 24 marks

Therefore,

60 % of full marks = 24

60 % of x = 24

$60 \% \times x = 24\\\\\frac{60}{100} \times x = 24\\\\0.6x = 24\\\\x = \frac{24}{0.6}\\\\x = 40$

Therefore, full marks is 40

<h3><u>Method 2:</u></h3>

If 60 % is 24, then we have to find what is 100 %

60 % = 24

100 % = x

This forms a proportion, So we can solve the sum by cross multiplying

$60 \% \times x = 24 \times 100 \% \\\\60x = 2400\\\\x=\frac{2400}{60}\\\\x = 40$

Thus full marks is 40

8 0

3 years ago