3 years ago

Gemma and Leah are both jewelry maker Gemma 106 beaded necklaces Leah made 39 more necklaces then Gemma

Mathematics

1 answer:

Montano1993 [528]3 years ago

3 0

What is the full question, you cannot make an equation with only that

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3x - 5y = 15<br> x - 4y = 12<br> Substitution method

Scorpion4ik [409]

Answer:

x=0,y=-3

Step-by-step explanation:

3x-5y=15 - equation(1)

x-4y=12 => x=12+4y -equation (2)

Replace equation (2) in equation (1)

3(12+4y)-5y=15

36+12y-5y=15

7y=15-36

7y= -21

y = -21/7

y=-3

If y=-3,then replace in equation (1) ; 3x -5(-3)=15

3x+15=15

3x=0

x=0

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3 years ago

Simplify -0.5i - i.<br> Enter your answer in the box.<br> help asap please

leonid [27]

The answer would be -1.5i

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2 years ago

Read 2 more answers

Pls help me with trig :)

trapecia [35]

Answer:

Step-by-step explanation:

let ∠GEF=x

then ∠GFE=90-x

$\frac{GH}{EH}=tan x\\GH=EH~ tan x\\or~ GH=a ~tan x=6 tan x\\\frac{GH}{FH}=tan (90-x)=cot x\\GH=FH*cot x\\GH=b*cot x=27 cot x\\6 tan x=27 cotx\\\frac{tan x}{cot x}=\frac{27}{6}\\tan ^2 x=\frac{27}{6}=\frac{9}{2}\\sec^2x-tan^2x=1\\sec^2 x=1+tan ^2x=1+\frac{9}{2}=\frac{11}{2}\\\frac{EG}{EH}=sec x\\ EG=EH sec x=a sec x= 6 sec x=6\sqrt{\frac{11}{2} } =3\sqrt{22} \approx 14.07$

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3 years ago

Find all maxima and minima of the function given below. Use a horizontal span of -6 to 6. (Round your answers to two decimal pla

AVprozaik [17]

Equation: 4 + 4x + x²

Maxima: No maximum value from said equation
Minima: x = -2 since that is the only critical point in the equation

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3 years ago

What are the zeros of the function f(x)=x2+12x+38

Artemon [7]

Answer:

The zero would be -2.714 (x-intercept)

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3 years ago