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2 years ago

Pls help!! i don’t get it at all

Mathematics

2 answers:

NikAS [45]2 years ago

7 0

Answer:

Step-by-step explanation:

We can answer this problem by using the Pythagorean theorem, which goes as follows:

a² + b² = c²

a & b are the legs (sides adjacent by 90 degrees) and c is the hypotenuse ("longer" side or side across from the 90° angle)

We plug stuff in like this, and then solve:

Formula: a² + b² = c²

Plug in: 10² + b² = $\sqrt{181}$ ²

Square root and square cancel each other out: 10² + b² = 181

Square the 10: 100 + b² = 181

Subtract 100 from both sides: b² = 81

Square root of both sides: b = $\sqrt{81}$

Square root of 81: b = 9

Leaving us with our answer. I hope this helps, have a nice day :)

tigry1 [53]2 years ago

5 0

Basically put it in a calculator

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= -6(x-7) – 9 =what will the equal to

egoroff_w [7]

HOPE THIS WILL HELP U....✌✌✌✌

5 0

2 years ago

3/4 + (1/3 ÷ 1/6) - (-1/2) =?

stepladder [879]

Answer:

[See Below]

Step-by-step explanation:

✦ Turn fractions into decimals:

$\frac{3}{4} =0.75$

$-\frac{1}{2} =-0.5$

(We will do something different for $\frac{1}{3}$ and $\frac{1}{6}$ .)

✦ Divide:

$\frac{1}{3}$ ÷ $\frac{1}{6}=2$

(Since the denominators are multiplies of each other we can divide them without having to change them into decimals.)

✦ Simplified Equation:

$0.75+2-(-0.5)$

✦ Add:

$0.75+2=2.75$

✦ Subtract:

$2.75-(-0.5)=3.25$

(Subtraction rule is if there is 2 negatives next to each other in a problem it turns into a positive.)

✦ So your answer would be:

$\frac{13}{4}$ (Exact Form)

$3~ \frac{1}{4}$ (Mixed Number Form)

$3.25$ (Decimal Form)

~Hope this helps Mate. If you need anything feel free to message me.

8 0

3 years ago

There were 12 girls on the basketball team. 3 of them scored over 10 points in the game. What fraction represents the number of

Naily [24]

Answer:

1/4

Step-by-step explanation:

3 out of 12 stored over 10:

3 / 12

simplify

1/4

6 0

2 years ago

The heights of a certain type of tree are approximately normally distributed with a mean height p = 5 ft and a standard

arsen [322]

Answer:

A tree with a height of 6.2 ft is 3 standard deviations above the mean

Step-by-step explanation:

⇒ $1^s^t$ statement: A tree with a height of 5.4 ft is 1 standard deviation below the mean(FALSE)

an X value is found Z standard deviations from the mean mu if:

$\frac{X-\mu}{\sigma} = Z$

In this case we have: $\mu=5\ ft$ $\sigma=0.4\ ft$

We have four different values of X and we must calculate the Z-score for each

For X =5.4\ ft

$Z=\frac{X-\mu}{\sigma}\\Z=\frac{5.4-5}{0.4}=1$

Therefore, A tree with a height of 5.4 ft is 1 standard deviation above the mean.

⇒ $2^n^d$ statement:A tree with a height of 4.6 ft is 1 standard deviation above the mean. (FALSE)

For X =4.6 ft

$Z=\frac{X-\mu}{\sigma}\\Z=\frac{4.6-5}{0.4}=-1$

Therefore, a tree with a height of 4.6 ft is 1 standard deviation below the mean .

⇒ $3^r^d$ statement:A tree with a height of 5.8 ft is 2.5 standard deviations above the mean (FALSE)

For X =5.8 ft

$Z=\frac{X-\mu}{\sigma}\\Z=\frac{5.8-5}{0.4}=2$

Therefore, a tree with a height of 5.8 ft is 2 standard deviation above the mean.

⇒ $4^t^h$ statement:A tree with a height of 6.2 ft is 3 standard deviations above the mean. (TRUE)

For X =6.2\ ft

$Z=\frac{X-\mu}{\sigma}\\Z=\frac{6.2-5}{0.4}=3$

Therefore, a tree with a height of 6.2 ft is 3 standard deviations above the mean.

6 0

3 years ago

Find three consecutive numbers whose sum equals 999.

mina [271]

Answer:

332, 333, 334

Step-by-step explanation:

First, we acknowledge that the equation that we need to solve will be "x+(x+1)+(x+2)=999" This is because x represents the smallest of three consecutive numbers whose sum is 999. Simplifying this equation will leave us with 3x+3=999 which is simplified further to 3x=996 and again simplified to x=332. X is the smallest number of the three.

4 0

2 years ago