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3 years ago

NEED HELP PLSSSS I DONT KNOW THE ANSWER

Mathematics

1 answer:

Lorico [155]3 years ago

7 0

Answer:

[ 3 , ∞ ) Set-Builder Notation:

{ x | x ≥ 3 }

Step-by-step explanation:

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Kelly collected $15, $15, $25, and $29 in the last 4 donations for the class fundraiser. The mean of the donations is _____?

photoshop1234 [79]

Answer:

Step-by-step explanation:

To find the mean, add up all the numbers

15+15+25+29 =84

Divide by the number of numbers

84/4 = 21

4 0

2 years ago

Read 2 more answers

How do you figure out the discount for something that is $134 tax 13% and is 50% off??

alukav5142 [94]

mult .13 with 134

add that to 134

then divide by 2 then that should be your answer

8 0

3 years ago

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Solve the proportion 7/5=21/x

Marysya12 [62]

Answer:

=15

Step-by-step explanation:

8 0

2 years ago

A group of students is arranging squares into layers to create a project. The first layer has 5 squares. The second layer has 10

True [87]

Answer:

Recursive formula:

$a_1=5;a_n=5+a_{n-1},n>0$

Explanation:

All the shown formulae in the choice list are recursive formulae instead of explicit formulae.

Explicit formulae that represent arithmetic sequences are of the form:

$a_n=a_1+(d-1)n$

That kind of formula permits to determine any term knowing the first term, the number of the term searched, and the common difference (d).

On the other hand, the recursive formulae let you to calculate one term knowing the previous term and the difference.

In this case, the difference in the number of squares of two consecutive terms is:

differece = number of squares in the second layer - number of squares in the first layer.

d = 10 - 5 = 5

Then, the recursive formula is:

$a_1=5;a_n=5+a_{n-1},n>0$

8 0

3 years ago

Please help me with the question thankyou

Snowcat [4.5K]

Answer:

$24x^{10}$

Step-by-step explanation:

<u>Key skills needed: Exponent multiplication, Multiplication</u>

1) We have the expression --> $(4x^{3})(6x^{7})$

2) We have to simplify this (the parentheses mean multiplication)

The easiest thing to do is: Multiply 4 and 6 --> 4 x 6 = 24.

3) With the step above, the expression now would be $24(x^{3})(x^7)$ .

We now have to do $x^3$ × $x^7$

For this we have to use this exponent rule --> $a^b$ × $a^c$ = $a^{b+c}$ .

4) This means that $x^3$ × $x^7$ = $x^{3+7} = x^{10}$

5) So the simplified expression would be --> $24x^{10}$

<em>Hope you understood and have a nice day!! :D</em>

3 0

3 years ago