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natali 33 [55]
3 years ago
11

What is -1 2/3 x (-5 1/4)? i need help! ASAP

Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

35/4

Step-by-step explanation:

Change -1 2/3 into -5/3. Change -5 1/4 into -21/4.

Multiply -5/3 by -21/4= 105/12

Reduces down to 35/4

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Read 2 more answers
Marcos purchases a top-up card for his pre-paid cell phone. His remaining balance, B, can be modeled by the equation B=40−0.1n,
Molodets [167]

Answer:

Part a) When Marcos purchased the card, the balance on the card was $40

This is the B-intercept

Part b) Mark will have spoken 400 minutes when he runs out of money

This is the n-intercept

part c) The slope of the equation is -0.1 and the units are dollars per minute

Step-by-step explanation:

we have

B=40-0.1n

where

B is balance in dollars on the card

n is the number of minutes

Part a) How much money was on the card when he purchased it? $______. Which intercept is this? B-intercept or N-intercept?

we know that

The B-intercept is the value of B when the value of n is equal to zero

so

For n=0

substitute and find the value of B

B=40-0.1(0)=\$40

therefore

When Marcos purchased the card, the balance on the card was $40

This is the B-intercept

Part b) How many minutes will he have talked when he runs out of money? $_____. Which intercept is this? B-intercept or n-intercept ?

we know that

The n-intercept is the value of n when the value of B is equal to zero

so

For B=0

substitute and find the value of n

0=40-0.1n

0.1n=40

n=400\ minutes

therefore

Mark will have spoken 400 minutes when he runs out of money

This is the n-intercept

Part c) What is the slope of this equation?________ . What are the units on the slope? Minute , dollars per minute ,minutes per dollars or dollars ?

we have

B=40-0.1n

This is is the equation of the line into slope intercept form

m=-0.1\frac{\$}{minute} -----> slope of the equation

b=40 ------> the B-intercept

The units of the slope are dollars per minute

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3 years ago
What are the two binomial factors for x2 – 25?
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Answer:

x^2 -25 = (x-5)(x+5)

Any expression of the form a^2 - b^2 = (a-b)(a+b)

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A line segment connecting two vertices of a polygon is called a _______
Elan Coil [88]

Answer: diagonal

Step-by-step explanation:

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For the given graph shown , select the statement that best represents the given system of equations.
svetlana [45]
The answer should be A
please let me know if this is wrong
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