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asambeis [7]
2 years ago
8

Jennifer has $0.95 in Nickels and dimes. The number of dimes is 3 less than twice the number of nickels. Find the number of nick

els
Mathematics
1 answer:
lozanna [386]2 years ago
7 0

Answer:

d=2(5)-3 (5=nickle)

So d=10-3 or d=7

Thus she had 7 dimes and 5 nickles

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From the top of a 210 foot lighthouse located at sea level, the keeper spots a boat at an angle of depression of 23 degrees
denpristay [2]
The distance from the lighthouse to the boat will be given by:
tan θ=opposite/adjacent
θ=angle of depression=23
opposite= height of the lighthouse
adjacent=distance from the boat to the bottom of the light house
hence
tan 23=210/a
thus solving for a we obtain:
a=210/tan23
hence
a=494.73 ft
6 0
3 years ago
Which of the following statements are true of solving equations?
katrin2010 [14]

we will check each options

option-A:

For solving any equations , we always isolate variables on anyone side

For exp: x+7=1

so, this is TRUE

option-B:

For solving system of equations

For exp:

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x+y=3

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so, this is TRUE

option-C:

We always solve problems using conventional method

we do not guess

so, this is  FALSE

option-D:

We often reverse order of operation

For exp:

(x-2)^2-3=0

so, this is TRUE

option-E:

For linear equations , we always get one solution , infinite solutions or no solutions

so, this is FALSE

5 0
2 years ago
Read 2 more answers
PLEASE HELP 
Rom4ik [11]
Its A, all y-values are less than -3x+5. also consider root by setting -3x+5=0

x=5/3 is positive so its the first one
3 0
3 years ago
Read 2 more answers
10. Use the properties of exponents to simplify the expression:
aivan3 [116]
<h3><u>Answer</u> :</h3>

\bigstar\:\boxed{\bf{\purple{x^{\frac{m}{n}}}=\orange{(\sqrt[n]{x})^m}}}

Let's solve !

:\implies\sf\:25^{\frac{3}{2}}

:\implies\sf\:(\sqrt[2]{25})^3

:\implies\sf\:5^3

:\implies\boxed{\bf{\red{125}}}

<u>Hence, Oprion-D is correct</u> !

7 0
3 years ago
Which number is equal to 10 to the power of neg 3
Shkiper50 [21]

Answer:

0.001

Step-by-step explanation:

4 0
3 years ago
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