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3 years ago

PLEASE HELP WILL GIVE 10 POINTS. HURRYY

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

4 0

B. -4-1. -4-1=-5, which is the amount of you count the spaces in between.

Hope this helps!

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WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST AND CORRECT PLS EXPLAIN WHY YOU ARE CORRECT

vfiekz [6]

Answer:

Step-by-step explanation:

The mid-segment of a trapezoid is parallel to each base.

The length of the mid-segment of a trapezoid is equal to half the sum of the lengths of its bases.

Bases are DG and EF

12 = (5x-4+8x+2)/2

24 = 13x-2

26 = 13x

x = 2

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3 years ago

Need help please can you give answer with working out i can not answer as it is quite gard

Elis [28]

Step-by-step explanation:

$\text{Given:}\\\\AB=3x-4\\AC=2x+12\\BC=7x-2\\AB:AC=1:2\Rightarrow(3x-4):(2x+12)=1:2\\\\\dfrac{3x-4}{2x+12}=\dfrac{1}{2}\qquad\text{cross multiply}\\\\(3x-4)(2)=(2x+12)(1)\qquad\text{use the distributive property}\\\\(3x)(2)+(-4)(2)=2x+12\\\\6x-8=2x+12\qquad\text{add 8 to both sides}\\\\6x-8+8=2x+12+8\\\\6x=2x+20\qquad\text{subtract}\ 2x\ \text{from both sides}\\\\6x-2x=2x-2x+20\\\\4x=20\qquad\text{divide both sides by 4}\\\\\dfrac{4x}{4}=\dfrac{20}{4}\\\\x=5$

$\text{Put the value of}\ x\ \text{to}\ AC\ \text{and}\ BC:\\\\AC=2(5)+12=10+12=22\\\\BC=7(5)-2=35-2=33\\\\AC:BC=22:33=\dfrac{22}{33}=\dfrac{22:11}{33:11}=\dfrac{2}{3}=2:3$

4 0

3 years ago

Please help me ................

andrew-mc [135]

Answer:

hello

Step-by-step explanation:

-3-1=-4

becouse 3+1=4 and we add minus -

have anice day bye

6 0

3 years ago

Read 2 more answers

Solve 2cos x+2cos 2x=0 on the interval [0,2pi)

rjkz [21]

$2cosx+2cos2x=0 \\ -2sin^2x+2cos^2x+2cosx=0 \\ -2(1-cos^2x)+2cos^2x+2cosx=0 \\ -2+2cos^2x+2cos^2x+2cosx=0 \\ 4cos^2x+2cosx-2=0 \\ t=cos x \\ 4t^2+2t-2=0 \\ \Delta=4+32=36 \\ t_1= \frac{-2-6}{8}=-1 \\ t_2= \frac{-2+6}{8}= \frac{1}{2} \\ cos x=-1 \lor cos x= \frac{1}{2} \\ x=-\pi \lor x= \frac{5\pi}{3}$

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3 years ago

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The marginal cost of drilling an oil well depends on the depth at which you are drilling; drilling becomes more expensive, per m

sukhopar [10]

Answer:

4,250,000 riyals

Step-by-step explanation:

The total cost of drilling a 500-meter well is the sum of fixed costs (1,000,000 riyals) and variable costs.

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Total cost of drilling is:

$TC = 3,250,000 + 1,000,000\\TC = 4,250,000\ riyals$

4 0

3 years ago