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2 years ago

Please help I'm so confused pls

Mathematics

1 answer:

riadik2000 [5.3K]2 years ago

4 0

So ur given the equation 1.44x=4.32
So you have to find x and you do this with algebra
X=4.32/1.44
X=3
So Emily bought 3 notebooks

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Express in the form 1 : n Give n as a decimal 10 : 12

Studentka2010 [4]

Answer:

1:1.2

Step-by-step explanation:

please give me a brainliest!!<3

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2 years ago

Equation 1:Ax+By=C Equation 2:Dx+Ey=F A, B, C, D, E, and F are non-zero real numbers. Which of the following could replace equat

Gnesinka [82]

A, B and E.

Adding and multiplying the terms allow them to keep working. However, you must make sure that each variable is changed each time. Not just one as in C and D.

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3 years ago

Please help guys I need it

Inessa05 [86]

Answer:

a= 20

b= 169.7

c= 29.71

Step-by-step explanation:

The formula of a triangle is (h*b)/2

a= (5*8)/2

b= to find the height, you can use the pythagorean theorem 18^2 - 6^2 = square root of 288. Which is 12root 2 or 16.97. (16.97*20)/2

c= using the pythagorean theorem- 11^2 = 7^2 - c^2 = square root 73, or 6root 2, or 8.49. (8.49* 7)/2

4 0

2 years ago

4/x-1+6/x+1=-12/x^2-1

Mademuasel [1]

$\frac{4}{x - 1} + \frac{6}{x + 1} = \frac{-12}{x^{2} - 1}$

$\frac{4(x + 1)}{(x - 1)(x + 1)} + \frac{6(x - 1)}{(x - 1)(x + 1)} = \frac{-12}{x^{2} - 1}$

$\frac{4x + 4}{x^{2} - 1} + \frac{6x - 6}{x^{2} - 1} = \frac{-12}{x^{2} - 1}$

$\frac{10x - 2}{x^{2} - 1} = \frac{-12}{x^{2} - 1}$

$(10x - 2)(x^{2} - 1) = -12(x^{2} - 1)$
$10x^{3} - 10x^{2} - 2x^{2} + 2 = -12(x^{2}) + 12(1)$
$10x^{3} - 12x^{2} + 2 = -12x^{2} + 12$
$10x^{3} - 12x^{2} + 12x^{2} + 2 = -12x^{2} + 12x^{2} + 12$
$10x^{3} + 2 - 2 = 12 - 2$
$\frac{10x^{3}}{10} = \frac{10}{10}$

$x^{3} = 1$
$x = 1$

4 0

2 years ago

HELP! i just need the answer but if u wanna explain that would be good also!

Stels [109]

Answer:

3.0479 / 2.102 = 1.45

10^8 / 10^6 = 10^2

answer is 1.45 * 10^2

7 0

2 years ago

Please help I'm so confused pls​

Please help I'm so confused pls