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3 years ago

14

Tom bought a sports drink for $1.25. He paid with nickels and dimes. He used 17 coins in all. How many nickels and how many dime

s did he use

1 answer:

bazaltina [42]3 years ago

5 0

Answer:

12 dimes 5 nickels

Step-by-step explanation:

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Solve the system of equations. y = 6x - 27 y = 4x - 17 a. ( -5, 3) c. ( 5, 3) b. ( -3, -5) d. No solution Please select the best

djyliett [7]

Answer:

c. ( 5, 3)

Step-by-step explanation:

6x-27=4x-17

6x-27-4x=4x-17-4x

2x-27=-17

2x-27+27=-17+27

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3 years ago

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Hello,

Answer: D

Step-by-step explanation:

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⇒ Answer D

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2 years ago

How do find Herons formula?

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3 years ago

Select ALL THE CORRECT ANSWERS PLS

tatiyna

Answer:

I know for sure B and C

Step-by-step explanation:

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Factor 16x^2 + 49. Check your work.

Shtirlitz [24]

Answer:

$16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

Step-by-step explanation:

Given : Expression $16x^2+49$

To find : Factor the expression ?

Solution :

The given expression is a quadratic function $y=ax^2+bx+c$ the solution is $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

On comparing with general form,

a=16, b=0, c=49

Substitute in the formula,

$x=\frac{-0\pm\sqrt{0^2-4(16)(49)}}{2(16)}$

$x=\frac{\pm\sqrt{-3136}}{32}$

$x=\frac{\pm56i}{32}$

$x=\frac{56i}{32},\frac{-56i}{32}$

$x=\frac{7i}{4},\frac{-7i}{4}$

Factors are $(x-\frac{7i}{4}),(x+\frac{7i}{4})$

Therefore, $16x^2+49=(x-\frac{7i}{4})(x+\frac{7i}{4})$

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3 years ago