A cat weighs 10 pounds. What is the error in the measurement? 1% 2% 5%

How many different PIN numbers codes are possible

iragen [17]

Answer:

10,000

Step-by-step explanation:

You can simply multiply 10*10 to get 100 possible combinations for the first two digits. Then you can multiply it again by 10 to get 1000 combinations for the first 3 digits. Then multiply it again by 10 to see that there are 10,000 possible combinations for a 4 digit code with 10 number, which is how pin numbers are created. This also means that you might have the same pin number as somebody else!

Hope this helped, please mark brainliest i need to feed my family ^_^

6 0

3 years ago

Read 2 more answers

Use the distance formula to find the distance between cach pair of points. If necessary,

nata0808 [166]

Answer:

$d \approx 18.4$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra II

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

Step-by-step explanation:

Step 1: Define

Point C (-2, 6)

Point D (10, -8)

Step 2: Find distance d

Substitute: $d = \sqrt{(10+2)^2+(-8-6)^2}$
Add/Subtract: $d = \sqrt{(12)^2+(-14)^2}$
Exponents: $d = \sqrt{144+196}$
Add: $d = \sqrt{340}$
Simplify: $d =2 \sqrt{85}$
Evaluate: $d = 18.4391$
Round: $d \approx 18.4$

4 0

3 years ago

Solve. 3 b=-a a + b = 21

Eva8 [605]

Answer:b=-10.5, a=31.5

Step-by-step explanation: 3b=-a , -3b=a

a+b =21

-3b+b = 21

-2b=21

b=-10.5

a=-3b

a=-3*-10.5=31.5

4 0

3 years ago

A student decided to use the points (.5, 20) and (3, 150) to make what she believed was a better regression equation. Her answer

Mamont248 [21]

Answer:

They can expect to make $524

Step-by-step explanation:

Lets solve the problem

The form of the linear function is f(x) = m x + b, where m is the slope of the line and b is the y-intercept (value f(x) at x = 0)

∵ The student decided to use the points (0.5, 20) and (3, 150)

to make a better regression equation

- She calculated the slope of the line using the two points

∵ $m=\frac{150-20}{3-0.5}=52$

- She substituted the value of m in the form above

∴ f(x) = 52 x + b

- Than she find that the best value of f(x) at x = 0 is 4

∴ f(x) = 52 x + 4

∵ x represents the number of hours

∵ y represents the money

∵ The family decides to extend the yard sale to be 10 hours long

- That means substitute x by 10 in f(x)

∵ x = 10

∴ f(10) = 52(10) + 4

∴ f(10) = 520 + 4

∴ f(10) = 524

∴ They can expect to make $524

5 0

3 years ago

Determine if triangle ABC with coordinates A (0, 2), B (2, 5), and C (−1, 7) is an isosceles triangle. Use evidence to support y

kirill115 [55]

Answer:

The triangle ABC is an isosceles right triangle

Step-by-step explanation:

we have

The coordinates of triangle ABC are

A (0, 2), B (2, 5), and C (−1, 7)

we know that

An isosceles triangle has two equal sides and two equal internal angles

The formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance AB

substitute in the formula

$d=\sqrt{(5-2)^{2}+(2-0)^{2}}$

$d=\sqrt{(3)^{2}+(2)^{2}}$

$dAB=\sqrt{13}\ units$

step 2

Find the distance BC

substitute in the formula

$d=\sqrt{(7-5)^{2}+(-1-2)^{2}}$

$d=\sqrt{(2)^{2}+(-3)^{2}}$

$dBC=\sqrt{13}\ units$

step 3

Find the distance AC

substitute in the formula

$d=\sqrt{(7-2)^{2}+(-1-0)^{2}}$

$d=\sqrt{(5)^{2}+(-1)^{2}}$

$dAC=\sqrt{26}\ units$

step 4

Compare the length sides

$dAB=\sqrt{13}\ units$

$dBC=\sqrt{13}\ units$

$dAC=\sqrt{26}\ units$

$dAB=dBC$

therefore

Is an isosceles triangle

Applying the Pythagoras Theorem

$(AC)^{2} =(AB)^{2}+(BC)^{2}$

substitute

$(\sqrt{26})^{2} =(\sqrt{13})^{2}+(\sqrt{13})^{2}$

$26=13+13$

$26=26$ -----> is true

therefore

Is an isosceles right triangle

8 0

4 years ago