Pls help 20 points

7th grade math

Answer: positive integers

Step-by-step explanation:

All whole numbers greater than 0 are also called the positive integers.

Answer:

[tex]\Large \boxed{\sf positive}[/tex]

Step-by-step explanation:

Answer:

Step-by-step explanation:

x - 14 < -23

x < -9

Hope this will help you lot.

Answer:

<MAD=66

Step-by-step explanation:

to find x:

8x-49=3x+6

x=11

to find DMC:

8(11)-49

<DMC=39

<ADM=36

to find ADC:

36/2

<ADC=18

Answer:

it's 1.2

Step-by-step explanation:

there's also a calculator online for mad

Answer:

765

Step-by-step explanation:

1/4 xbxaxh

0.5 x 17 x5 x 18

Which equals to 765

Answer:

18X17X5X.5=765

i think

Step-by-step explanation:

all you do is X all the sides and then add a *.5

Hope this helps

Step-by-step explanation:

t-24= -37

t= -34+24

t= -13

Answer:

t = -13

Step-by-step explanation:

Add or subtract the numbers

t- 24 = - 37t−24=−37

Separate the constants and variables

t = - 37 + 24t=−37+24

Add or subtract the numbers

t = - 13t

Answer:

28 i think

Step-by-step explanation:

Answer:

it is possible to visualize the results better than with other numerical scales

Step-by-step explanation:

A rating scale is been set up extract information concerning quantitative as well qualitative attribute.

A rating scale can be regarded as

method of data collection devices in collection of comparative information about as regards a specific research subject. It do comes in form of a multiple-choice question so that values could be assigned to a product by survey respondents. multiple rating list scale gives a better and broad results and give better chance in visualizing the gotten result compare with numerical scales( numerical scale are scales that gives quantitative symbolization as regards attribute).

It should be noted that With a measurement question built on a multiple rating list scale it is possible to visualize the results better than with other numerical scales

Answer:

3x^2+6x and 12x^2-18x

Step-by-step explanation:

First explantanation : 3x time x is 3x^2 and 3x time is 2 is 6x .                                2nd explantanation : 6x time 2 is 12x^2 and 6x time -3 is -18x .

Answer:

c=39

Step-by-step explanation:

Answer:

Multiply the 27 yd × 30 yd then after the other one do the same thing but after All divide it by 17

Answer:

13/100 have pet fish

Step-by-step explanation:

6/10 = 60/100

60/100 + 27/100 = 87/100 have cats and dogs

that leaves 13/100 have pet fish

9514 1404 393

Answer:

Step-by-step explanation:

The usual formulas are useful for this.

  V = LWH

  V = (10 cm)(4 cm)(5 cm) = 200 cm³

The volume is 200 cubic centimeters.

__

  SA = 2(LW +H(L +W))

  SA = 2((10 cm)(4 cm) +(5 cm)(10 cm +4 cm)) = 2(40 +5(14)) cm² = 220 cm²

The surface area is 220 square centimeters.

Answer:

the bottom graph in the first photo

Step-by-step explanation:

it is a function, unlike the others, because that graph is the only one where the x values dont repeat. in order for it to be a function, the x values cannot repeat

Answer:

(a) [tex]Selection = 6724520[/tex]

(b) [tex]At\ most\ 12 = 6553976[/tex]

(c) [tex]At\ most\ 8 = 6066720[/tex]

(d) [tex]At\ most\ 12\ red\ and\ at\ most\ 8\ blue = 5896638[/tex]

Step-by-step explanation:

Given

[tex]Colors = 8[/tex]

[tex]Balloons = 28[/tex] --- at least

Solving (a): 28 combinations

From the question, we understand that; a combination of 28 is to be selected. Because the order is not important, we make use of combination.

Also, because repetition is allowed; different balloons of the same kind can be selected over and over again.

So:

[tex]n => 28 + 8-1[/tex][tex]= 35[/tex]

[tex]r = 28[/tex]

[tex]Selection = ^{35}^C_{28[/tex]

[tex]Selection = \frac{35!}{(35 - 28)!28!}[/tex]

[tex]Selection = \frac{35!}{7!28!}[/tex]

[tex]Selection = \frac{35*34*33*32*31*30*29*28!}{7!28!}[/tex]

[tex]Selection = \frac{35*34*33*32*31*30*29}{7!}[/tex]

[tex]Selection = \frac{35*34*33*32*31*30*29}{7*6*5*4*3*2*1}[/tex]

[tex]Selection = \frac{33891580800}{5040}[/tex]

[tex]Selection = 6724520[/tex]

Solving (b): At most 12 red balloons

First, we calculate the ways of selecting at least 13 balloons

Out of the 28 balloons, there are 15 balloons remaining (i.e. 28 - 13)

So:

[tex]n => 15 + 8 -1 = 22[/tex]

[tex]r = 15[/tex]

Selection of at least 13 =

[tex]At\ least\ 13 = ^{22}C_{15}[/tex]

[tex]At\ least\ 13 = \frac{22!}{(22-15)!15!}[/tex]

[tex]At\ least\ 13 = \frac{22!}{7!15!}[/tex]

[tex]At\ least\ 13 = 170544[/tex]

Ways of selecting at most 12  =

[tex]At\ most\ 12 = Total - At\ least\ 13[/tex] --- Complement rule

[tex]At\ most\ 12 = 6724520- 170544[/tex]

[tex]At\ most\ 12 = 6553976[/tex]

Solving (c): At most 8 blue balloons

First, we calculate the ways of selecting at least 9 balloons

Out of the 28 balloons, there are 19 balloons remaining (i.e. 28 - 9)

So:

[tex]n => 19+ 8 -1 = 26[/tex]

[tex]r = 19[/tex]

Selection of at least 9 =

[tex]At\ least\ 9 = ^{26}C_{19}[/tex]

[tex]At\ least\ 9 = \frac{26!}{(26-19)!19!}[/tex]

[tex]At\ least\ 9 = \frac{26!}{7!19!}[/tex]

[tex]At\ least\ 9 = 657800[/tex]

Ways of selecting at most 8  =

[tex]At\ most\ 8 = Total - At\ least\ 9[/tex] --- Complement rule

[tex]At\ most\ 8 = 6724520- 657800[/tex]

[tex]At\ most\ 8 = 6066720[/tex]

Solving (d): 12 red and 8 blue balloons

First, we calculate the ways for selecting 13 red balloons and 9 blue balloons

Out of the 28 balloons, there are 6 balloons remaining (i.e. 28 - 13 - 9)

So:

[tex]n =6+6-1 = 11[/tex]

[tex]r = 6[/tex]

Selection =

[tex]^{11}C_6 = \frac{11!}{(11-6)!6!}[/tex]

[tex]^{11}C_6 = \frac{11!}{5!6!}[/tex]

[tex]^{11}C_6 = 462[/tex]

Using inclusion/exclusion rule of two sets:

[tex]Selection = At\ most\ 12 + At\ most\ 8 - (12\ red\ and\ 8\ blue)[/tex]

[tex]Only\ 12\ red\ and\ only\ 8\ blue\ = 170544+ 657800- 462[/tex]

[tex]Only\ 12\ red\ and\ only\ 8\ blue\ = 827882[/tex]

[tex]At\ most\ 12\ red\ and\ at\ most\ 8\ blue = Total - Only\ 12\ red\ and\ only\ 8\ blue[/tex]

[tex]At\ most\ 12\ red\ and\ at\ most\ 8\ blue = 6724520 - 827882[/tex]

[tex]At\ most\ 12\ red\ and\ at\ most\ 8\ blue = 5896638[/tex]

Answer:

20 oranges.

Step-by-step explanation:

If you add 10 and 3 that gives you 13,

now add the 7 and that should give you 20.

Answer:

5!

Step-by-step explanation:

3990

Step-by-step explanation:

57*70=3990

Answer:

Area of ABC is greater than area of DEF

Step-by-step explanation:

Answer:

A. Area of ABC is greater than area of DEF.

Answer:

114

Step-by-step explanation:

to get the degrees of hexagon u should know first the greatest degree so you can subtract the others from it and how to get that

by this formula (no of sides-2)*180

(6-2)*180=720

so 138+128+120+160+90=606

and the remaining angle should be 720-606

which is 114

Answer:

2. -2> -7 ...............

Answer:

C

Step-by-step explanation:

198 cubic meters

Answer:

3

Step-by-step explanation:

it is 3 3x1 is 3

Answer:

$12

Step-by-step explanation:

20% of 60 = 12

Answer:

12 .....20% of 60 is = 12

Step-by-step explanation:

Answer:

y = -3/2x - 2

y int is -2

x int is -3/2

Round your answer to the nearest hundredth if necessary. Estimate the diameter of a circle with a circumference of 80 feet.