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kirill [66]
3 years ago
7

Does anyone know how to factor y^2+49?

Mathematics
2 answers:
uysha [10]3 years ago
6 0

Y + 7i y-7i

Explanation:

Delvig [45]3 years ago
5 0

Answer:

(y + 7i)(y - 7i)

Step-by-step explanation:

It cannot be factored using real numbers, but consider

7i × - 7i

= -49i² and i² = - 1

= 49

The factoring as a difference of squares to obtain

y² + 49 = (y + 7i)(y - 7i)

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The graph shows how the mass of copper
Alex777 [14]

Answer: 8 1/4g/cm³

Step-by-step explanation:

Given the graph :

The rate of change in the mass of copper with respect to volume :

To obtain this, we find the slope or gradient of the graph:

Gradient = Δy / Δx = (y2 - y1) / (x2 - x1)

Drawing a right angled triangle on the anybpart of the line of best fit:

y2 = 40 ; x2 = 4.75 ; y1 = 16 ; x1 = 2

(y2 - y1) / (x2 - x1)

= (40 -16) / (4.75 - 2)

= 24 / 2.75

= 2400/275

= 8.727 g/cm^3

Due to unit and graph scale,, the slope is closest to 8 1/4g/cm³

6 0
2 years ago
No work needed!! Just answers, thank you! 25 points!!
Maurinko [17]

Answer:

Step-by-step explanation:

S_{31} = 9 \cdot 31 + [-0.5 \cdot \frac{31(31-1)}{2}] = 46.5

S_{40} = 40 + [-3 \cdot \frac{40(40-1)}{2}] = -2300

3 0
3 years ago
QUESTION 94
sattari [20]

Answer: 34.3%

Step-by-step explanation:

Given:\ 12/35\ flights\ on\ time

To find the percent, divide then multiply by 100:

\frac{12}{35} = 0.343\times100=\large\boxed{34.3}

4 0
1 year ago
HELP!!!!!!!!!!!!!!!!!!!!
solong [7]

Answer:

y = -1/2x+4

Step-by-step explanation:

y = 2x-1

This equation is in slope intercept form  y = mx+b  where m is the slope

m=2

A line perpendicular will have a slope that is the negative reciprocal

m = -1/2

Using the slope intercept form

y = mx+b

y = -1/2x+b

and the point given (2,3)

3 = -1/2(2)+b

3 = -1+b

4 =b

y = -1/2x+4  is the equation of a line that is perpendicular to the original line and contains (2,3)

6 0
2 years ago
Please help me!!!!!!!!!!!!!!
arsen [322]

Ans

184 sq meter

Step-by-step explanation:

Area of the cuboid box = (2*FA)+(2*SA)+(2*TA)

Where FA= Front face area

SA= Side face area

TA= top face are

Here FA= length * breadth = 10*6=60 sq meter

SA= 10*2= 20 sq meter

TA= 6*2= 12 sq meter

So area of box= 2*60+2*20+2*12= 184 sq meter

7 0
3 years ago
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