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3 years ago

A key code must contain 4 numerals. There are 10 numerals available. Using

Mathematics

1 answer:

kvasek [131]3 years ago

8 0

Answer:

B, 210

Step-by-step explanation:

$\dbinom{10}{4} = \dfrac{10!}{6! \cdot 4!} = \dfrac{10 \cdot 9 \cdot 8 \cdot 7}{4 \cdot 3 \cdot 2 \cdot 1} = 5 \cdot 3 \cdot 7 \cdot 2 = 210$

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If x = 0 and y > 0, where is the point (x,y) located?

pochemuha

Answer: it would be 13

Step-by-step explanation:

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3 years ago

At 12 noon, leslie recorded the temperature as 56 degrees f. The temperature had increased by 8 degrees f from 10am. The tempera

Marat540 [252]

Let the temperature at 10am be x, then
x + 8 = 56
x = 56 - 8 = 48 degrees F

Let y be the temperature at 8am, then
y - 2 = 48
y = 48 + 2 = 50 degrees.

4 0

3 years ago

Read 2 more answers

What is the length of XZ

Artemon [7]

Answer:

$XZ=13\ units$

Step-by-step explanation:

we know that

In the right triangle of the figure XYZ

Applying the Pythagorean Theorem

$XZ^2=XY^2+YZ^2$

substitute the given values

$XZ^2=12^2+5^2$

$XZ^2=144+25$

$XZ^2=169$

square root both sides

$XZ=13\ units$

6 0

3 years ago

Use the distance formula to find the perimeter. Round to the nearest tenth.

Ierofanga [76]

Answer:

37.6 units

Step-by-step explanation:

Perimeter = sum of all sides of the triangle

To find the sum, find the distance between each points.

✔️Distance between points (-7, 6) and (5, -4):

$d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} =$

$= \sqrt{(5 - (-7))^2 + (-4 - 6)^2}$

$= \sqrt{(12)^2 + (-10)^2}$

$= \sqrt{144 + 100}$

$= \sqrt{244} = 15.6 units$ (nearest tenth)

✔️Distance between (-7, 6) and (-7, -4):

|6 -(-4)| = 10 units

✔️Distance between (-7, -4) and (5, -4)

|-7 - 5| = 12 units

✔️ Perimeter = 15.6 + 10 + 12 = 37.6 units

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3 years ago

Paul rents a car for $30 a day. Write an expression to show the relationship between the number of days Paul rents the car and t

rosijanka [135]

The expression that can be used to show the relationship between the number of days and the total dollars (t) he spends is t = 30d

<h3>How to write expressions</h3>

Cost of renting a car per day = $30
Number of days Paul rents the car = d
Total amount John spends = $t

The equation:

Total = cost per day × number of days

t = 30 × d

t = 30d

Learn more about equation:

brainly.com/question/13763238

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2 years ago