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3 years ago

What is the line x intercept of the line y = -4 + 2x? a.4 b. -4 c.2 d.-2

Mathematics

1 answer:

expeople1 [14]3 years ago

5 0

It would be c or 2 because x is your slope therefore your x-intercept.
so I would say c

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5x + 1y + 4z=-1

kati45 [8]

Answer:

[7, -4, -8]

Step-by-step explanation:

Just simply plug in each choice into the equations to confirm their authenticities.

7 0

3 years ago

Select the correct answer. Find the sum of 2 + (-) + 3

White raven [17]

Answer:

-1

Step-by-step explanation:

Firstly + and (-) become - and again same thing will happen

Hope it helps you....☺

8 0

3 years ago

in a five character password the first two characters must be digits and the last three characters must be letters if no charact

Vilka [71]

Answer:

1,404,000 unique passwords are possible.

Step-by-step explanation:

The order in which the letters and the digits are is important(AB is a different password than BA), which means that the permutations formula is used to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

In this question:

2 digits from a set of 10(there are 10 possible digits, 0-9).

3 characters from a set of 26. So

$P_{10,2}P_{26,3} = \frac{10!}{8!} \times \frac{26!}{23!} = 10*9*26*25*24 = 1404000$

1,404,000 unique passwords are possible.

5 0

3 years ago

Choose all true statements:

leva [86]

1 - All real numbers are rational numbers. FALSE
All real numbers are NOT rational numbers. The real numbers are made up of rational numbers and irrational numbers.

2 - Some rational numbers are natural numbers. TRUE
All natural number are rational numbers but not all rational numbers are natural numbers. Thus, some rational numbers are natural numbers.

3 - No real numbers are irrational numbers. FALSE
The real numbers are made up of rational numbers and irrational numbers. Thus, some real numbers are natural numbers.

4 - All whole numbers are integers. TRUE
The whole numbers are the natural numbers plus 0. The integers comprises of the whole numbers plus the negative of the whole numbers.
Thus, all whole numbers are integers.

5 - Some integers are natural numbers. TRUE
The integers comprises of the whole numbers plus the negative of the whole numbers. The whole numbers are the natural numbers plus 0. The natural numbers are the counting numbers, i.e. 1, 2, 3, . . . which are also part of integers.
Thus, some integers are natural numbers.

6 - No rational numbers are integers. FALSE
The rational numbers are made up of the integers and any number that can be expressed as a fraction.
Thus, all integers are rational numbers and some rational numbers are integers.

8 0

3 years ago

Read 2 more answers

David is visiting his aunt for the Thanksgiving weekend. He drove 60% of the trip at 40 mph and the rest at ‘x’ mph. The average

Brut [27]

Answer:

D. 80 mph

Step-by-step explanation:

d- distance

d/50= 0.6d/40+0.4d/x
1/50= 0.3/20+0.4/x
0.4/x= 0.02- 0.015
x= 0.4/0.005
x= 80 mph

4 0

3 years ago

Read 2 more answers