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3 years ago

PLEASE HELP FINAL GRADE QUIZ!!!!!

Mathematics

2 answers:

Drupady [299]3 years ago

6 0

Answer:

D) 1 quarter and 1 dime

Step-by-step explanation:

1 quarter = 25% of a dollar

1 dime = 10% of a dollar

10% + 25%=35% not 30

fiasKO [112]3 years ago

5 0

Answer:

D) 1 quarter and 1 dime

Step-by-step explanation:

1 quarter = 25% of a dollar

1 dime = 10% of a dollar

10% + 25%=35% , 35% is not equal to 30%

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How do I solve these equations

Sever21 [200]

You need to know the properties of each function.
Tan is opposite (y) over adjacent (x). Sin>0 means that sin is positive, therefore, it is located on either quadrant 1 or 2. Tan=4/3 so it is located in quadrant 1.
The side of the triangle must be Adjacent=3 opposite=4 and hypotenuse=5
Now, you are asked to find the half angle of Cos which is
$\sqrt{\frac{1+cos}{2} }$
By following the formula, cos=3/5 then:
$\sqrt{ \frac{1- \frac{3}{5} }{2} }$ Multiply everything (inside the square $\sqrt{ \frac{5+3}{10} }$ root) by 5
$\frac{2 \sqrt{2} }{ \sqrt{10} }$
$\frac{2 \sqrt{20} }{10}$ Then just simplify
$\frac{ \sqrt{20} }{5}$ The answer is Square root of 20 over 5

3 0

3 years ago

7 = 3t - 3 - 2+ + 6. Justification: ? property

Volgvan

Answer:

7 = 3t + 1

t = 6

....................

7 = 3t - 2t + 3

t = 4

4 0

3 years ago

Here you go thanks for your help

denis-greek [22]

Answer:

Step-by-step explanation:

I'm just going to reply for points lol-

8 0

2 years ago

In words, the scalar product of two vectors can be thought of as the product of the magnitude of ~a with the magnitude of the pr

timama [110]

Answer:

67.73625

Step-by-step explanation:

The dot (scalar) product is also the sum of products of corresponding vector components.

~a • ~b = 9·2.97 +6.75·6.075 +0·0 = 27.73 +41.00625 = 67.73625

6 0

3 years ago

Steps to solve 5[3(14.5+7)-3]-7.4

steposvetlana [31]

Hey there!

To solve this expression, you must follow your orders of operations or PEMDAS (Parenthesis, Exponents, Multiplication and Division, Addition and Subtraction).

In the case of 5[3(14.5+7)-3]-7.4, you not only have parenthesis, but you also have brackets. To start, you would first simplify what is in the parenthesis:
5[3(14.5+7)-3]-7.4
5[3(21.5)-3]-7.4

Now, simplify what is in the bracket, starting by multiplying 3(21.5) since multiplication comes before addition and subtraction:
5[3(21.5)-3]-7.4
5[64.5-3]-7.4
5[61.5]-7.4

Now, multiply 5*61.5 since multiplication comes next:
5[61.5]-7.4
307.5-7.4

And finally, subtract what is left since it is your final operation remaining to get 300.1 as your final answer.

Hope this helps and have a marvelous day!

6 0

3 years ago