3 years ago

Which expression is equivalent to the expression –6.4 – 12 + 4.6?

Mathematics

1 answer:

kow [346]3 years ago

6 0

The answer is -13.8.

Hope this helps!

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Solve 6x^2 - 42 = 0 for the exact values of x

GREYUIT [131]

Answer:

The values of x are

$x=-\sqrt{7} , x=\sqrt{7}$

Step-by-step explanation:

we have

$6x^{2}-42=0$

Solve for x

Adds 42 both sides

$6x^{2}-42+42=0+42$

$6x^{2}=42$

Divide by 6 both sides

$6x^{2}/6=42/6$

simplify

$x^2=7$

square root both sides

$x=\pm\sqrt{7}$

therefore

The values of x are

$x=-\sqrt{7} , x=\sqrt{7}$

6 0

3 years ago

John goes running every morning. He can run 3 miles in 1 hour. How many miles would he be able to run in 1 and ½ hours?

sp2606 [1]

Answer:

4.5 or 4 1/2 miles

Step-by-step explanation:

$\dfrac{3\text{ miles}}{\text{hour}}\cdot 1.5 \text{ hours}= 3\cdot 1.5=4.5$

Hope this helps!

5 0

3 years ago

I just need to know if these are parallel please,,,

Nataly_w [17]

These are parallel !

4 0

3 years ago

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Dominic makes and sells salsa. The function C = 2n + 200 represents his costs, in dollars, for producing n jars of salsa. His re

Elan Coil [88]

Answer:the function representing profit, P = 3n + 200

Step-by-step explanation:

The function C = 2n + 200 represents his costs, in dollars, for producing n jars of salsa.

The revenue, or the amount he receives for selling n jars, can be represented by the function R = 5n.

Profit = revenue - cost or expenses.

Therefore,

The function representing Dominic's profit, P, for selling n jars of salsa will be

P = 5n - 2n + 200 = 3n + 200

8 0

3 years ago

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Two times a number added to -4, subtracted from triple the sum of eight times the number and five

mr Goodwill [35]

Answer:

2x+(-4)-8x(3)-5

7 0

3 years ago

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