All categories

3 years ago

I need help with #3 plz

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

5 0

The correct answer is A. 10 bracelets

Firlakuza [10]3 years ago

4 0

The correct answer for 3 is a and for 4 is b

You might be interested in

Find the sum of 46 + 42 +38... +(-446) +(-450)

schepotkina [342]

The sum of the given sequence is -24846.

<u>Step-by-step explanation:</u>

The given Arithmetic sequence is 46 + 42 +38... +(-446) +(-450).

The first term of the sequence = 46
The last term of the sequence = -450
The common difference ⇒ 46 - 42 = 4

<u>To find the number of terms in the sequence :</u>

The formula used is $n = (\frac{a_{n}-a_{1}} {d})+1$

where,

n is the number of terms.
$a_{n}$ is the late term which is -450.
$a_{1}$ is the first term which is 46.
d is the common difference which is 4.

Therefore, $n =(\frac{-450-46}{4}) +1$

⇒ $n = (\frac{-496}{4}) + 1$

⇒ $n = -124 + 1$

⇒ $n = -123$

⇒ n = 123, since n cannot be negative.

∴ The number of terms, n = 123.

<u>To find the sum of the arithmetic progression :</u>

The formula used is $S = \frac{n}{2}(a_{1} + a_{n} )$

where,

S is the sum of the sequence.
$a_{1}$ is the first term which is 46.
$a_{n}$ is the late term which is -450.

Therefore, $S = \frac{123}{2}(46+ (-450))$

⇒ $S = \frac{123}{2}(-404)$

⇒ $S = 123 \times -202$

⇒ $S = -24846$

∴ The sum of the given sequence is -24846.

6 0

3 years ago

How to write 4=3/5x+23/5 into y=Mx+b form

Mariana [72]

Answer:20= 3x + 23

Step-by-step explanation:

Y and X are the two variables in the graph m is the gradient (dy/dx) and b being the intercept

5 0

4 years ago

You take measurements of the distance traveled by an object that is increasing its speed at a constant rate. The distance travel

Serhud [2]

Answer:

Follows are the solution to this question:

Step-by-step explanation:

Given:

$s_1 = 21 \ \ t_1 = 1\\\\s_2 = 59 \ \ t_2 = 2\\\\s_3 = 141 \ \ t_3 = 4$

All points are on the graph including its quadratic function, in order to install their coordinates to values of x and y with the following values:

$y= ax^2 + bx + c\\\\21=a+b+c$ Inserting the coordinates of the first point

$y= ax^2 + bx + c\\\\59 =4a+2b+c$ Inserting the coordinates of the second point

$y= ax^2 + bx + c\\\\141=16a+4b+c$ Inserting the coordinates of the third point

5 0

3 years ago

Root 2×root5<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2%20%5Ctimes%20%20%5Csqrt%7B5%20%3D%20%7D%20%7D%20" id="TexFormul

Maurinko [17]

<h2>Answer:</h2>

$\sqrt[4]{20 {x}^{2} }$

<h2>Step-by-step explanation:</h2>

$\sqrt{2x \sqrt{5} } \\ \\ \sqrt{2 \sqrt{5x} } \\ \\ \sqrt{ \sqrt{(2 {x}^{2} )} \sqrt{5} } \\ \\ \sqrt{ \sqrt{4 {x}^{2} } \times 5} \\ \\ \sqrt{ \sqrt{20 {x}^{2} } } \\ \\ \sqrt[4]{20 {x}^{2} }$

3 0

2 years ago

The equation y=45x represents the number of miles, y, Mr. Miller’s car can travel using x gallons of gas. Which data display rep

qaws [65]

Answer:

Put it as something which y=zx where z would be z>45

Step-by-step explanation:

7 0

3 years ago