Help Me !!!!!!!!!!!!

Answer:

2323

Step-by-step explanation:

Mental math means to find a way to do this problem in your head without using paper, pencil or a calculator.

The question says there are 23 classes and each class is to collect 101 items.

The equation would be 23 x 101.

To do this in your head real quick, make the numbers easier to multiply.

Make the 101 items 100.  That means you are telling each class to collect 1 less item or 23 less items total.

You can do this in your head real quick.  23 classes collecting 100 items is 2300 items.

You had each class collect 100 items instead of 101.  That mean you didn't collect 23 items.   So if you add those back in, you will get

2323 items.

Answer:

-4/4 = -1

Step-by-step explanation:

yeah-ya...... right?

Answer:

B this is the smallest number

The only set of side lengths that can form a triangle is 9, 4, 8.

Option A is the correct answer.

A triangle is a 2-D figure with three sides and three angles.

The sum of the angles is 180 degrees.

We can have an obtuse triangle, an acute triangle, or a right triangle.

We have,

In a triangle, the sum of the lengths of any two sides must be greater than the length of the third side.

Let's check if each of the given sets of side lengths satisfies this condition:

A.

9, 4, 8

9 + 4 > 8 ✓

9 + 8 > 4 ✓

4 + 8 > 9 ✓

All three inequalities are true, so these side lengths can form a triangle.

B.

14, 7, 6

14 + 7 > 6 ✓

14 + 6 > 7 ✓

7 + 6 > 14 ✗

The last inequality is false, so these side lengths cannot form a triangle.

C.

3, 8, 1

3 + 8 > 1 ✓

3 + 1 > 8 ✗

8 + 1 > 3 ✓

The second inequality is false, so these side lengths cannot form a triangle.

Therefore,

The only set of side lengths that can form a triangle is A. 9, 4, 8.

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

Answer:

45:12

Step-by-step explanation:

5 + 16 + 4 + 7 + 13 = 45

5 (red) + 7 (blue) = 12

Answer:

UJCTR

Go up to from the current letter to get the answer i think?

You can try finding the pattern behind the conversion.

The code for SHARP is UJCTR

Well it depends. There are infinite possibilities.

Most of the times, if its like a question from some exam or book etc, then there is certain simple pattern which you can see if focus. Otherwise, there may be too complex, or sometimes too simple, or sometimes moderately complex patterns.

For given case, you can see that the pattern is to take the third letter from the given letter from the English alphabet.

For B it was B - C - D, thus, D

For E it was E - F - G, thus, G

For A it was A - B - C, thus, C

For D it was D - E - F, thus, F

Similarly, we get:

For S it was S - T - U, thus, U

For H it was H - I - J, thus, J

For A it was A - B - C, thus, C

For R it was R - S - T, thus, T

For P it was P - Q - R, thus, R

Thus,

The code for SHARP is UJCTR

Learn more about character coding here:

https://brainly.com/question/17120657

Step-by-step explanation:

f(x) = x² + 2ax + a² - a

g(x) = 4 - x²

f(x) = g(x)

x² + 2ax + a² - a = 4 - x²

2x²+2ax+a²-a -4 =0

the equation has two different solutions

=> (2a)² - 4(2)(a²-a-4) > 0

4a²-8a²+8a +32 >0

-4a²+8a+32 > 0

a²-2a-8 >0

(a-4)(a+2) < 0

the answer should be

-2 < a < 4

Answer:

The answer is 9

Step-by-step explanation:

Cause when we multiplied 6 to 9 the answer will be 54

Answer:

answer

First we need to write system of 2 equations with 2 variables:

x*6 + y*12.5 = 34

x+y = 3.5

for substitution we express one of variables in one of equations and put it in other equation.

x = 3.5-y

(3.5 - y)*6 + 12.5*y = 34

21 - 6y + 12.5y = 34

6.5y = 13

y = 2

x = 3.5 - y = 3.5 - 2 = 1.5

she ran for 1.5 hours and biked for 2 hours.

check:

1.5*6 + 2*12.5 = 9 + 25 = 34 = 34

The number of arrangements is an illustration of permutations.

The number of arrangement is 5040

The given parameter is:

[tex]n = 7[/tex] --- number of days

[tex]r = 7[/tex] --dinners for 7 days

So, the number of different arrangement is

[tex]^nP_r = \frac{n!}{(n - r)!}[/tex]

Substitute known values

[tex]^7P_7 = \frac{7!}{(7 - 7)!}[/tex]

[tex]^7P_7 = \frac{7!}{0!}[/tex]

[tex]^7P_7 = \frac{5040}{1}[/tex]

[tex]^7P_7 = 5040[/tex]

Hence, the number of arrangement is 5040

Read more about arrangements at:

https://brainly.com/question/15301090

Step-by-step explanation:

this is the answer

please follow me and mark me as a brainlist

Answer:

i don't know how to answer this

Answer:

there is no diagram so, it is not possible to solve this

Answer:

5

Step-by-step explanation:

-4x-4+3x+x-9 distributive property

combine like terms which would delete x, so the answer would be 5

Answer:The graph of y = f(x-2) is the graph of y = f(x) translated two units rightward.

So, since the point (9,2) lies on the graph of y = f(x), the point (11,2) lies on the graph of y = f(x-2).

Step-by-step explanation:

Answer:

15 19/30

Step-by-step explanation:

Using a quadratic equation according to the area of the rectangular mat, it is found that:

The area of a rectangle of length l and width w is given by:

[tex]A = lw[/tex]

In this problem:

[tex]lw = 714[/tex]

[tex](25 + 4x)(21 + 2x) = 714[/tex]

[tex]8x^2 + 134x + 525 = 714[/tex]

[tex]8x^2 + 134x - 189 = 0[/tex]

Which is a quadratic equation with [tex]a = 8, b = 134, c = -189[/tex].

The, to find the widths of the mat, we have to first find the value of x, solving the quadratic equation.

[tex]\Delta = 134^2 - 4(8)(-189) = 24004 [/tex]

[tex]x_{1} = \frac{-134 + \sqrt{24004}}{2(8)} = 0.654[/tex]

[tex]x_{2} = \frac{-134 - \sqrt{24004}}{2(8)} = -9.03[/tex]  

We are interest in the positive value of x, so x = 0.654.

[tex]2(0.654) = 1.308[/tex]

A similar problem is given at https://brainly.com/question/14099239

Step-by-step explanation:

The usual thing to do is to try to get rid of one variable first. So to get rid of x, we multiply the first equation by 5.

5(x + y) = 2(5)

-5x - 5y = -10

---> 5x + 5y = 10

-5x - 5y = -10

---> 0 = 0

As you can see, everything cancels out. If the statement is true, then it is infinitely many solutions.

Answer:

x= 13

Step-by-step explanation:

can i please get branlist? if not thats okay.

Answer:

3/7 ÷ 2/7 = 3/2

3/4÷5/6 = 9/10

Step-by-step explanation:

The key rule to understanding how to divide fractions is...

KEEP SWITCH FLIP!!!

Basically, you keep the first fraction, switch the sign from division to multiplication, and flip the other fraction...

Here's how you would go about this:

3/7÷2/7

Keep 3/7 and switch ÷ to multiplication

3/7 · 2/7

Now flip 2/7 so it becomes 7/2

3/7 · 7/2

Now multiply across!

3 · 7 = 21

7 · 2 = 14

You get 21/14...but don't forget to simplify!! Divide 21 and 14 by 7 to get 3/2!

And now...for 3/4 ÷ 5/6, you do the exact same thing!

Keep...3/4

Switch...  ÷

Flip...5/6

And you should get:

3/4 · 6/5

Multiply across...

= 18/20

Simplify!

= 9/10

I hope this helps clarify any confusion you may have had!

Answer:

1 1/2 and 5/8

Step-by-step explanation:

problem 1

3/7 divided by 2/7

flip 2nd fraction then multiply is formula

so 3/7 times 7/2 which is 21/14 which is 1 7/14 simplify to 1 1/2

2

so 3/4 times 5/6 remeber formula  

3/4 times 6/5

18/20 multiply numerators and denominators

you could also answer as 0.9

Answer:

Yes. f(x) and g(x) are inverses of one another

Step-by-step explanation:

[tex]f(x) = - \frac{1}{2} x - 2 \\ y = - \frac{1}{2} x - 2 \\ x = - \frac{1}{2} y - 2 \\ x + 2 = - \frac{1}{2} y \\ - 2(x + 2) = - \frac{1}{2} y \times - 2 \\ - 2x - 4 = y \\ {f }^{ - 1} (x) = - 2x - 4[/tex]

In step 1 we just copied the original function.

In step 2 we substituted y for f(x).

in step 3 we switched the variables.

in step 4 we added 2 to both sides.

in step 5 we multiply both sides by -2

In step 6 we solved for y.

In step 7 is just a fancy way of saying the inverse function f(x) = -2x - 4

Answer:

(x+6)

Step-by-step explanation: remember gemdas

Groups

Exponents

Multipy

Divide

Add

Ssubtract

Answer:

20.94$

Step-by-step explanation:

3.49x6 since Tia bought 6 pineapples and they cost 3.49 each and it equals 20.94$. So to buy 6 pineapples at the farmers market it cost 20.94$.

Answer:

[tex]2x + 7 = 3x - 7 \\ 3x - 2x = 7 + 7 = 14 \\ x = 14 \\ 2x + 7 + 12y + 1 = 180 \\ 12y + 36 = 180 \\ 12y = 180 - 36 = 144 \\ y = 144 \div 12 = 12[/tex]