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2 years ago

Help please if you can

Mathematics

1 answer:

Citrus2011 [14]2 years ago

7 0

It goes up each time bc its 2x2 is r 3x3 is 9 4x4 is 16 and 5x5 is 25. its each number time each number and it goes up 1 everytime. what are the options ?

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sandy spent %78 on the purchase of 6 identical pairs of shoes for the cheerleaders. Write the unit rate in price per pair.

guapka [62]

Answer:

13% per pair of shoes

because if she 78% on 6 shoes you would divide 78 by 6 to find the percent she spent on one pair of shoes

8 0

2 years ago

What is an equation of the line that passes through the point (5,-8) and is

Schach [20]

Answer:

Step-by-step explanation:

-4y = -5x + 16

4y = 5x - 16

y = 5/4x - 4

perp. -4/5

y + 8 = -4/5(x - 5)

y + 8 = -4/5x + 5

y = -4/5x - 3

8 0

2 years ago

What is the solution to 3|–3x 9| = –18? x = –5 x = 5 or x = 1 x = –5 or x = 1 no solution

alexdok [17]

Answer:

Step-by-step explanation:

that is the solution above

6 0

1 year ago

L1 and L2 are two straight lines. The origin of the coordinate axes is O. L1 has equation 5x + 10y = 8 L2 is perpendicular to L1

Ivenika [448]

Answer:

40 sq units

Step-by-step explanation:

$5x + 10y = 8\\\Rightarrow y=\dfrac{8-5x}{10}\\\Rightarrow y=-\dfrac{1}{2}x+\dfrac{2}{5}$

Slope of $L_2$ is $m_2$

$m_1m_2=-1\\\Rightarrow m_2=-\dfrac{1}{m_1}\\\Rightarrow m_2=-\dfrac{1}{-\dfrac{1}{2}}\\\Rightarrow m_2=2$

$L_2$ passes through point $(8,6)$

$y-6=2(x-8)\\\Rightarrow y=2x-16+6\\\Rightarrow y=2x-10$

Point at x axis where $L_2$ intersects is

$0=2x-10\\\Rightarrow x=\dfrac{10}{2}\\\Rightarrow x=5$

Point $A$ of the triangle will be $(5,0)$

$L_2$ intersects line $x=-3$ . The point is

$y=2\times(-3)-10\\\Rightarrow y=-6-10\\\Rightarrow y=-16$

The points of the triangle are $A(5,0), O(0,0), B(-3,-16)$

Area of triangle is given by

$A=\dfrac{|A_x(B_y-O_y)+B_x(A_y-O_y)+O_x(A_y-B_y)|}{2}\\\Rightarrow A=\dfrac{|5(-16-0)+-3(0-0)+0(0-(-16))|}{2}\\\Rightarrow A=40\ \text{sq units}$

The area of the triangle is 40 sq units.

6 0

2 years ago

The answers are in the pic

irina1246 [14]

The answer would be 150 (aka the last one) because the formula to find the surface area of a cube is A=6a^2

8 0

2 years ago

Read 2 more answers