3 years ago

How many solutions does y=2x+2,4x-2y=4 have?

Mathematics

1 answer:

Crazy boy [7]3 years ago

7 0

It has No solutions. .

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Laurie was scuba diving. Each time she dove 5 feet deeper, she would stop and clear her ears. After Laurie had checked her instr

stepladder [879]

Answer:

Laurie's maximum depth can be represented using the expressions :

(20 × 3) = 60

(3 × 4 × 5) = 60

Step-by-step explanation:

Each depth level at which ears are checked = 5 feets

Each Depth level at which instruments are checked = 20 feets

For Laurie to check her instrument ;

Number of times ears are checked = 20/5 = 4 times

This means that for Laurie to have checked her instrument 3 times :

(4 × 3 × 5) = 60 feets

Therefore, Laurie's maximum depth can be expressed as (4 × 3 × 5) = 60 feets

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2 years ago

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3 cos A = 4 sin A find a) cos A b) 3-cot2 A+ cosec2A

Lady_Fox [76]

Answer:

a). cosA = 4/5

b).

$3 - cot {}^{2} a \: + cosec {}^{2} a \: = 0$

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3 years ago

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Given uv = su tu sv prove vt = st

Lady bird [3.3K]

Answer: see proof below

Step-by-step explanation:

$\begin{array}{cl|cl}&\underline{\text{Statement}}&&\underline{\text{Reason}}\\1.&TU\perp SV&1.&\text{Given}\\2.&\angle TUV = 90^o&2.&\text{De finition of Perpendicular angles}\\&\angle TUS = 90^o&&\\3.&\angle TUV=\angle TUS&3.&\text{Transitive Property}\\4.&UV=US&4.&\text{Given}\\5.&TU=TU &5.&\text{Reflexive Property}\\6.&\triangle TUV = \triangle TUS&6.&\text{SAS Congruency Theorem}\\7.&VT=ST&7.&CPCTC\end{array}$