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miss Akunina [59]
4 years ago
8

Can someone help me with this please

Mathematics
2 answers:
hichkok12 [17]4 years ago
5 0

6. Is 78%

7. Is 420% I think

stellarik [79]4 years ago
4 0

78%

420%

0.08

0.15

1.25

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2x²+12x-7 =0 (completing the square) give your answer to 2 decimal places
guapka [62]

Answer:

x1 = 0.54

x2 = –6.55

Step-by-step explanation:

use the calculator

8 0
3 years ago
Two positive numbers have a difference of 4 and a product of 96. What are the numbers?
Pavel [41]
It'd be A.. You first would find which of them have a difference of 4. Which, is A, C, and D. Then, you'd multiply to see which of those three equal 96. 12*8=96
5 0
3 years ago
Read 2 more answers
HELP ASAP!!<br> please show work!!!<br> what is the value of x in the matrix equation below?
son4ous [18]

Answer:

x=2

Step-by-step explanation:

The given matrix equation is ;

\frac{3}{2}\left[\begin{array}{cc}x&6\\8&4\end{array}\right] +y \left[\begin{array}{cc}1&4\\3&2\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]

We multiply the scalars to get;

\left[\begin{array}{cc}\frac{3}{2}x&9\\12&6\end{array}\right] +\left[\begin{array}{cc}y&4y\\3y&2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]

We simplify to get;

\left[\begin{array}{cc}\frac{3}{2}x+y&9+4y\\12+3y&6+2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]

By the equality property of matrices, we can write the following equations;

\frac{3}{2}x+y=z...(1)

6+2y=2

2y=2-6

2y=-4

y=-2

Also;

12+3y=6z

\Rightarrow 12+3(-2)=6z

\Rightarrow 12-6=6z

\Rightarrow 6=6z

\Rightarrow z=1

We substitute these values into equation (1) to find x.

\frac{3}{2}x-2=1

\frac{3}{2}x=1+2

\frac{3}{2}x=3

\frac{1}{2}x=1

x=2

6 0
3 years ago
Can someone help pls
STALIN [3.7K]

Answer:

-7x19 and that how u get ur answer

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Integers between-4 and 2,inclusive
rjkz [21]
The integers between -4 and 2, inclusive would be -4, -3, -2, -1, 0, 1, and 2
3 0
4 years ago
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