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3 years ago

Please answer correctly !!!!!!!!!!!!!!! Will mark Brianliest answer !!!!!!!!!!!!!!!!!

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

4 0

Answer:

x = 8√2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Trigonometry

[Right Triangles Only]: Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use PT to solve for the missing length.

Step 2: Identify Variables

Leg a = 8

Leg b = 8

Hypotenuse c = x

Step 3: Solve for x

Substitute [PT]: 8² + 8² = x²
Exponents: 64 + 64 = x²
Add: 128 = x²
Isolate x: 8√2 = x
Rewrite: x = 8√2

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Keiko has seven colors of lanyard. She uses three different colors to make a keychain. How many different combinations can she c

AleksAgata [21]

Combination = doesn't matter what order
Permutation = order matters

There are two methods to work out combinations.

Method 1 List out possibilities
123 124 125 126 127 134 135 136 137 145 146 147 156 157 167
234 235 236 237 245 246 247 256 257 267
345 346 347 356 357 367
456 457 467
567

For a total of 35 combinations.

Method 2 Use a formula.
It's a rather complicated one, so only use it if you have a lot of possibilities.

$\frac{n!}{r!(n-r)!} = \frac{7!}{3!(7-3)!} = \frac{7!}{3!*4!} = \frac{7*6*5*4*3*2*1}{3*2*1*4*3*2*1} = \frac{7*6*5}{3*2*1}=\frac{210}6=35$

(n is the number of choices, r is the amount you choose, and ! is a function that multiplies together all numbers down to 1)

7 0

3 years ago

Elizabeth jogged the same distance for 2 days and she jogged 6 miles on the third day. She jogged for a total of 16 miles over 3

trasher [3.6K]

Answer: Elizabeth jogged 5 miles on the first day.

Step-by-step explanation:

16-6= 10

10/2 = 5

4 0

2 years ago

The weights for newborn babies is approximately normally distributed with a mean of 5.4 pounds and a standard deviation of 1.8 p

Mariana [72]

Answer:

You would expect 807 babies to weigh between 3 and 6 pounds.

Step-by-step explanation:

We are given that

Mean, $\mu=5.4$ pounds

Standard deviation, $\sigma=1.8$ pounds

n=1500

We have to find how many would you expect to weigh between 3 and 6 pounds.

The weights for newborn babies is approximately normally distributed.

Now,

$P(3$

$=P(-1.33$

$P(3$

Number of newborn babies expect to weigh between 3 and 6 pounds

= $1500\times 0.538=807$

6 0

3 years ago

Brainiest answer to whoever is first

Zielflug [23.3K]

Answer:

theres no image

Step-by-step explanation:

6 0

2 years ago

a 15 foot ladder is leaning against a wall. the bottom of the ladder is 5 feet from the wall. to the nearest foot, how far up th

denis23 [38]

The formula for this would be the Pythagorean Theorem. This meaning a²+b²=c²
so a²+15²=25, 15²=225, so a²+225=25, move the 225 over and a²=250, square root of 250 is 15.8 rounded up to 16 feet so, so a=16. but idk that might not be right

6 0

3 years ago