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alina1380 [7]
3 years ago
13

What is 5(-3.4k-7)+(3k+12)=

Mathematics
1 answer:
Ket [755]3 years ago
4 0
5*( -3.4k ) + 5*( - 7 ) + 3k + 12 = - 17k + 3k - 35 + 12 = -14k - 23 ;
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Help please!<br> 6x^2+2x-9=0<br> A 6.4, -8.4<br> B 1.1, -1.4<br> C -2.2, 2.8<br> D -1.1, -1.4
Yakvenalex [24]
6x^2+2x-9=0\\\\a=6;\ b=2;\ c=-9\\\\\Delta=b^2-4ac\to\Delta=2^2-4\cdot6\cdot(-9)=220\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-2-\sqrt{220}}{2\cdot6}=\dfrac{-2-\sqrt{220}}{12}\approx-1.4\\\\x_2=\dfrac{-2+\sqrt{220}}{2\cdot6}=\dfrac{-2+\sqrt{220}}{12}\approx1.1

Answer: B. 1.1; -1.4.
6 0
3 years ago
Convert 7200 seconds into weeks. Round to the nearest hundredth
Reika [66]

Answer:

0.01190476, but since you have to round to the nearest hundredth your answer should be 0.01

Step-by-step explanation:

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3 years ago
Read 2 more answers
Find the imaginary solutions to the following quadratic function:
Temka [501]

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the solutions are these

Step-by-step explanation:

\frac{3}{14}  +  \frac{ \sqrt{159} }{14} i \: and  \\ \: \frac{3}{14}   -  \frac{ \sqrt{159} }{14} i

8 0
3 years ago
How to find the area of composite polygon that have a base of 16 meters height of 18 meters and a height of 11 meters.
LenaWriter [7]

The area of the composite polygon is:

\boxed{A_{T}=376 \ m^2}

<h2>Explanation:</h2><h2 />

Hello! remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any figure, so I'll choose the figure below in order to illustrate this problem. A composite polygon is a polygon that can be divided into two or more basic shapes. So here we have a composite polygon formed by a triangle and a rectangle. So:

A_{total}=A_{T} \\ \\ A_{triangle}=A_{tr} \\ \\ A_{rectangulo}=A_{r} \\ \\ \\ A_{tr}=\frac{b\times h}{2} \\ \\ b:Base \ of \ the \ triangle \\ \\ h:height \ of \ the \ triangle \\ \\ \\ A_{r}=B\times H \\ \\ B:base \ of \ the \ rectangle \\ \\ H:height \ of \ the \ rectangle

So the area of the composite figure is:

A_{T}=\frac{16\times 11}{2} + 16\times 18 \\ \\ A_{T}=88+288 \\ \\ \boxed{A_{T}=376 \ m^2}

<h2>Learn more:</h2>

Dilation: brainly.com/question/10946046

#LearnWithBrainly

8 0
3 years ago
-5/2/-19/10 <br><br><br> Pls Answer this question I can't figure it out!!!
Rus_ich [418]

Answer:

decimal result is 0.6 but fraction wise its 3/5

7 0
2 years ago
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