All categories

3 years ago

Hi guys can you please help me with this test.

Mathematics

1 answer:

Anika [276]3 years ago

4 0

Sure! but unfortunately the picture is blank. not sure if it’s just my screen

You might be interested in

How many liters of 30% salt solution must be added to 6 L of an 80% salt solution to obtain a 50% salt solution

melamori03 [73]

Answer:

9 Liters

Step-by-step explanation:

Let us represent:

The number of liters of the 30% salt solution = x

Number of liters for the 80% solution = 6 Liters

Number of liters for the 50% solution = x + 6 Liters

Hence:

x × 30% + 6 × 80% = (x + 6)50%

0.3x + 4.8 = 0.5x + 3

Collect like terms

4.8 - 3 = 0.5x - 0.3x

1.8 = 0.2x

x = 1.8/0.2

x = 9 Liters

Therefore, the number of liters for the 30% Salt solution = 9 Liters

4 0

3 years ago

What is the square root of -1?

Sonja [21]

Answer: i

Step-by-step explanation: the awnser is i just trust me here

7 0

3 years ago

Read 2 more answers

What is 1,766 divide by 8

Mazyrski [523]

It is 223.5

Hope I helped!

4 0

4 years ago

Read 2 more answers

Whats the answer of 23,869 in long division

ddd [48]

<h2>Answer:</h2><h2>THIS IS THE ANSWER WHILE DIVIDING IT INTO TWO.</h2>

----------

-------------

----------

<h2> 90</h2><h2> -90</h2><h2>TOTAL ANS; 1194.45</h2>

<h2>THE REASON WHY THE 9 TURNED INTO 90 WAS BECAUSE: 9 CAN NOT BE DIVISIBLE BY TWO SO I HAD TO ADD A 0 AND REPLACE THE symbol (.)IN THE ANSWER.</h2>

<h2>I HOPE IT HELPED YOU.</h2>

<h2>DON'T HESITATE TO ASK FOR FURTHUR EXPLANATION.</h2>

<h2>THANK YOU.</h2>

<h2># THE BEAUTIFUL EMPRESS!!</h2>

4 0

3 years ago

What is the equation of the axis of symmetry of the graph of y=ax^2+bx+c

Phantasy [73]

Answer:

$x=-\frac{b}{2a}$

Step-by-step explanation:

we know that

The quadratic equation $y=ax^{2}+bx+c$ is a vertical parabola

The axis of symmetry in a vertical parabola is a vertical line

The equation of the axis of symmetry in a vertical parabola is equal to the x-coordinate of the vertex

The x-coordinate of the vertex is equal to the formula

$x=-\frac{b}{2a}$

therefore

the equation of the axis of symmetry is equal to $x=-\frac{b}{2a}$

4 0

3 years ago

Read 2 more answers