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marin [14]
3 years ago
5

Hey I need some help with this question plz help me

Mathematics
1 answer:
icang [17]3 years ago
4 0

Answer:

B

Step-by-step explanation:

Let the nickels = x

Let the dimes = y

You don't know the total value of either. Nor do you know the total number of either.

You only know the total value of both together.

7.80 added to anything makes it bigger than 7.80 A is wrong.

y cannot be alone it should be multiplied by 0.5    C is wrong

D is wrong for the same reason A is

B is the correct answer. That is the way you write the problem

Number of Coins and value on one side. Total on the other.

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Simplify 3 x times the fraction 1 over x to the power of negative 4 times x to the power of negative 3.
N76 [4]

Answer:

3x^2

Step-by-step explanation:

Given:

(3x) * {(1/x)^-4 }* (x^-3)

=(3x) * {1 ÷ (1/x)^4} * {1/x^3}

=(3x) * {1(x/1)^4} * (1/x^3)

=(3x) * (x^4) * (1/x^3)

=(3x) (x^4) (1) / x^3

Multiply the denominators

=3x^5 / x^3

Can also be written as

=3*x*x*x*x*x / x*x*x

Divide the x

= 3*x*x / 1

=3x^2

8 0
4 years ago
Are the two triangles below similar? Triangles ABC and DEF are shown. Angle A equals 84 degrees, Angle C equals 38 degrees, Angl
vichka [17]

the answer is yes; they have congruent corresponding angles. i got this right on my test, your welcome :)

8 0
4 years ago
Read 2 more answers
Simplify and rationalize the expression.
alexandr402 [8]
~-2.15139............ hope it helps

5 0
3 years ago
Jackson has 2,000 baseball cards in his collection. Gabe has 110 as many baseball cards in his collection as Jackson. How many b
kozerog [31]

Answer:

220000

Step-by-step explanation:

2000x110=220000

Why does he have so man though???

4 0
3 years ago
If f(x)=4x−7 what is f(−5)?<br><br> 1. 13<br> 2. -27<br> 3. -13<br> 4. 27
Xelga [282]

Answer:

option 2

Step-by-step explanation:

Substitute x = - 5 into f(x) , that is

f(- 5) = 4(- 5) - 7 = - 20 - 7 = - 27

3 0
3 years ago
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