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bixtya [17]
3 years ago
14

Factorise fully 150-24d^2

Mathematics
1 answer:
solong [7]3 years ago
7 0
Answer: 6(5 + 2d)(5 - 2d)


Explanation:

150-24d^2 = 6(25 - 4d^2) = 6(5 + 2d)(5 - 2d)
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How to solve this equation
mariarad [96]
\bf \sqrt{5x+19}-4=3x-15
\\\\
\sqrt{5x+19}=3x-15+4\\\\ \sqrt{5x+19}=3x-11\leftarrow \textit{square both sides}
\\\\
(\sqrt{5x+19})^2=(3x-11)^2
\\\\
5x+19=(3x-11)^2\qquad 
\begin{cases}
(3x-11)^2\to (3x-11)(3x-11)\\
 --------------\\
\textit{or use FOIL to expand it}
\end{cases}

then solve for "x"
7 0
3 years ago
How do I do this help due in tomorrow
Mkey [24]

Answer:

The top one is 135 cm^2

Step-by-step explanation:

To find the area, all you need to do is multiply the 3 different measurements. For the one in the top corner we need to multiply the length by the width by the height. The work is done below for you on that one.

A = l * w * h

A = 15 * 3 * 3

A = 135 cm^2

4 0
3 years ago
Write a expression that can be used to multiply 6x198
nydimaria [60]

In this problem, we are asked to give an expression that can be used to mentally multiply 6 and 198. In order not to go through the rigorous multiplication, we can estimate 198 to 200, that is 6 *200 equal to 1200. Since there is a 2*6 excess or 12 then we subtract: 1200 -12 equal to 1188.

8 0
3 years ago
Help please and thank you
babymother [125]
<h3>Answer: Draw a straight line through (0,-7) and (1,-5)</h3>

Explanation:

You could use any two points you want. For me, the easiest is when x = 0. Plug this into the equation to get

y = 2x-7

y = 2(0)-7

y = -7

So we have x = 0 and y = -7 pair up to get (0,-7) as our first point. This is the y intercept.

Repeat for x = 1

y = 2x-7

y = 2(1)-7

y = -5

So (1,-5) is another point on this line. You only need two points at minimum to graph a straight line.

6 0
3 years ago
Please help I'm really confused
inessss [21]

Answer:

your answer should look like this.

Step-by-step explanation:

The horizontal line goes through y-intercept -1/2

3 0
3 years ago
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