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3 years ago

Luis works 45 hours and earns 10 an hour. How much money would he earn in 3 weeks.

Mathematics

1 answer:

daser333 [38]3 years ago

3 0

Answer: $1,350

Step-by-step explanation:

45 hours x 10 dollars/hour = 45x10 dollars = 450 dollars/week

450 dollars/week x 3 weeks = 450x3 dollars = 1350 dollars

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Solve the inequality. –1/4x – 8 < 3/4

Firlakuza [10]

Step-by-step explanation:

Step 1: Add 8 to both sides

$-\frac{1}{4}x - 8 + 8 < \frac{3}{4} + 8$

$-\frac{1}{4}x < \frac{35}{4}$

Step 2: Multiply both sides by -4

$-\frac{1}{4}x * -\frac{4}{1} < \frac{35}{4} * -\frac{4}{1}$

$x > -35$

Answer: $x > -35$

3 0

2 years ago

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Which of the following expressions are equivalent to 6.53 - (-4.11) + 7.926.53?

umka21 [38]

Answer:

Choice B and Choise C.

Step-by-step explanation:

Equivalent expressions are those expressions that have the same value but they look different.

Given the following expression provided in the exercise:

$6.53 - (-4.11) + 7.92$

You need to remember the multiplication of signs in order to find the equivalent expressions:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-$

Then:

- Eliminating the parentheses, you get this equivalent expression:

$6.53 +4.11 + 7.92$

- Since the mulplication of two negative signs gives yous a positive sign, you can rewrite the original expression in this form:

$-(-6.53)+4.11-(-7.92)$

This is an equivalent expression to $6.53 - (-4.11) + 7.92$

8 0

2 years ago

How much warmer is it when the temperature is 17°F than when it is -11°F?

Rufina [12.5K]

Answer:

i thinks it -11°F but not sure

3 0

3 years ago

The equation tan^2 x+1=sec^2 x is an identity true or false

Solnce55 [7]

Answer:

tan²x + 1 = sec²x is identity

Step-by-step explanation:

* Lets explain how to find this identity

∵ sin²x + cos²x = 1 ⇒ identity

- Divide both sides by cos²x

∵ sin x ÷ cos x = tan x

∴ sin²x ÷ cos²x = tan²x

- Lets find the second term

∵ cos²x ÷ cos²x = 1

- Remember that the inverse of cos x is sec x

∵ sec x = 1/cos x

∴ sec²x = 1/cos²x

- Lets write the equation

∴ tan²x + 1 = 1/cos²x

∵ 1/cos²x = sec²x

∴ than²x + 1 = sec²x

- So we use the first identity sin²x + cos²x = 1 to prove that

tan²x + 1 = sec²x

∴ tan²x + 1 = sec²x is identity

8 0

3 years ago

HELPPPP!!!!! what is the y-intercept of the parabola y = x2 + 6x .

Natali [406]

The y intercept is what we get when x=0, so in this case it's

Answer: y=0

3 0

2 years ago

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