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ddd [48]
2 years ago
5

Please give me the answer (click on file) ​

Mathematics
1 answer:
Dovator [93]2 years ago
5 0

Answer:

x = 122

Step-by-step explanation:

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Please be quick! I need this as soon as possible!
Katarina [22]

Answer:

64%

Step-by-step explanation:

The nickel= 9/25

The copper=16/25

1. Multiply by 4 to get a total of 100

nickel=36/100

copper= 64/100

Sorry if it is wrong but i hope i was right

5 0
3 years ago
Read 2 more answers
I need help with this ( please help me )
Gnom [1K]

Answer:

<7=120

<8=60

Step-by-step explanation:

<2 and <7 are alternate exterior angles. <7 and <8 are complementary sor just do 180-120 and you will get 60

3 0
3 years ago
What are the factors of 2x + 3x - 54? Select two options
tiny-mole [99]

Answer:

The answer: The factors are (2x-9) and (x+6).

The Problem:

Factor 2x^2+3x-54

Step-by-step explanation:

So I'm going to do trial factors using the choices to aid me.

Factored form for this problem if it exist will be in the form:

(mx+n)(kx+p).

In general this is what it would look like if we factored any quadratic in terms of x (given the quadratic is not prime but technically you could factor even over the complex numbers).

Let's look at:

(mx+n)(kx+p)

We want to choose k \text{ and } m such that when you multiply them you get 2.  Well those would have to be 2 and 1.

(2x+n)(x+p)

we want to choose n \text{ and } p such that when you multiply them you get -54. Based on the choices we want to get with -9 and 6, or 9 and -6. We don't know the order we want to choose it in either.

For example which of these would work:

(2x-6)(x+9)

(2x+6)(x-9)

(2x-9)(x+6)

(2x+9)(x-6)

We are going to consider only the outer and inner of FOIL since we already know the first times the first is 2x^2 and the last times the last is -54.

Let's test the first one:

(2x-6)(x+9)

Outer:  2x(9)=18x

Inner: -6(x)=-6x

------------------------ADD!

18x-6x=12x

The first choice did not give us the middle term 3x.

Trying the second one would give us the opposite since they are in the same form as previous just the + and - are switched.

Let's look at the third one:

(2x-9)(x+6)

Outer: 2x(6)=12x

Inner: -9(x)=-9x

--------------------------ADD!

12x-9x=3x

This is the winner.

The answer: The factors are (2x-9) and (x+6).

7 0
3 years ago
Read 2 more answers
Find the missing angle. Round your answer to the nearest degree.
Lubov Fominskaja [6]

Step-by-step explanation:

\tan( x )  =  \frac{13}{18}  \\ x = arctan (\frac{13}{18} ) \\ x =  {79}^{o}

8 0
3 years ago
Write these numbers in standard form
sertanlavr [38]

Answer:

1. 2 × 10⁵

2. 8 × 10⁴

3. 9 × 10⁸

4. 1 × 10¹⁰

Step-by-step explanation:

3 0
3 years ago
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