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1 year ago

Find the geometric mean between 20 and 5

Mathematics

2 answers:

Sholpan [36]1 year ago

3 0

Answer is a
Explanation 5/20

katovenus [111]1 year ago

3 0

The answer is 10.

Step-by-step explanation:

I have the same question on some tests of mine

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How many different arrangements can be made with the letter of the word 'M O R O C C O'?

valentinak56 [21]

Since the order matters, it's a permutation of 7 letters, but mind you in
MOROCCO. you have 3 O's and 2 C's, Hence the arrangements are:

⁷P₇ /(3!2!) = 7!/(3!2!) = 5040/(3!2!) = 420 arrangements

8 0

2 years ago

if you horizontally strech the quadratic parent function, f(x)=x^2, by a factor of 4, what is the equation of the new function?

max2010maxim [7]

Answer:

g(x) = x^2/16

Step-by-step explanation:

To stretch a function horizontally by a factor of k, replace x with x/k.

You want a stretch factor of 4, so your function is ...

g(x) = f(x/4) = (x/4)^2

g(x) = x^2/16

The attached graph shows the horizontal stretch.

8 0

2 years ago

If B=3x^{2}-x+3 and A=x-6, find an expression that equals 2B+3A in standard form.

Ivan

9514 1404 393

Answer:

6x^2 +x -12

Step-by-step explanation:

Substitute for A and B and collect terms.

2B +3A

= 2(3x^2 -x +3) +3(x -6) . . . . substitute for A and B

= 6x^2 -2x +6 +3x -18 . . . . . eliminate parentheses

= 6x^2 +x -12 . . . . . . . . . . . . collect terms

7 0

2 years ago

3/4√5-√3 + 2/4√5+√3 =b√3+a√5 find the value of b and a

Zielflug [23.3K]

Answer:

a = 5 / 4

b = 0

Step-by-step explanation:

3/4√5 - √3 + 2/4√5 + √3 = b√3 + a√5

3/4√5 + 2/4√5 + √3 - √3 = b√3 + a√5

5/4√5 + 0 = b√3 + a√5

0 + 5/4√5 = b√3 + a√5

b√3 = 0

b = 0 / √3

b = 0

a√5 = 5/4√5

a = 5/4√5 / √5

a = 5 / 4

3 0

2 years ago

A ladder leans against a 22-feet-tall apple tree. The base of the ladder forms a 42° angle with the ground. Approximately how ta

igomit [66]

(D) 33 feet

<u>Explanation:</u>

Given:

Height of the tree, h = 22 feet

angle, θ = 42°

Length of the ladder, l = ?

We know:

sin θ = Perpendicular / hypotenuse

So,

Sin θ = height of the tree / length of the ladder

$sin 42^0 = \frac{22}{l} \\\\0.67 = \frac{22}{l} \\\\l = 32.84 feet$

l = 32.84 feet ≈ 33 feet

Therefore, the length of the ladder be to reach the top of the apple tree is 33 feet.

6 0

2 years ago