pls help asap 15 point and brainliest

Answer:

You have them both correct. #1 is B   #2 is C

Step-by-step explanation:

Answer:

C) 17.1 square units

Step-by-step explanation:

Use Heron's formula to calculate the area of the triangle:

[tex]Area = \sqrt{s(s-a)(s-b)(s-c)}[/tex]  where  [tex]s=\frac{a+b+c}{2}[/tex] which represents the semi-perimeter of the triangle:

[tex]s=\frac{9.9+6.1+6}{2}=11[/tex]

Therefore:

[tex]Area = \sqrt{11(11-9.9)(11-6.1)(11-6)}\\[/tex]

[tex]Area = \sqrt{11(1.1)(4.9)(5)}\\[/tex]

[tex]Area = \sqrt{296.45}\\[/tex]

[tex]Area = 17.2[/tex]

Therefore, the closest answer choice is C) 17.1 square units

Answer:

The real numbers have the following important subsets: rational numbers, irrational numbers, integers, whole numbers, and natural numbers.Aug 28, 2018

Step-by-step explanation:

Answer:

C)  x² + 2x - 6

Step-by-step explanation:

add 2x +1 to x² - 7

Answer:

16 cups of sugar

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

So our ratio here is 2:3. Here's what we're gonna do:

2 + 3 = 5 for every time he makes the recipe

40 / 5 = 8

To double check:

2 x 8 = 16

3 x 8 = 24

16 + 24 = 40

Answer:

A) 288.62

Step-by-step explanation:

10.4×15.3= 159.12

10.4²+15.3²= X²

342.25= X²

18.5= X

7×18.5= 129.5

129.5+159.12= 288.62

Answer:

Cylinder

Step-by-step explanation:

The shape of this figure is cylinder.

Answer:

a cylinder

Step-by-step explanation:

tis not sphere, cone, or pyramid :)

Answer:

219.05 m²

Step-by-step explanation:

Dimension of right angle triangle : 109 m and 190 m

The right angle triangle has a height of 190 m and base length of 109 m

A corner of the base from the pyramid's top is equivalent to the hypotenus of the right angle triangle :

Let :

hypotenus = c ; base = b ; height = a

Hypotenus² = opposite² + adjacent²

c² = a² + b²

c² = 190² + 109²

c² = 36100 + 11881

c² = 47981

c = sqrt(47981)

c = 219.04565

A corner of the base from the pyramid's top is 219.05 m²

Given:

The perimeter of a backyard basketball court with four sides is 90 feet.

Two sides of the court are each 20 feet long.

One side of the court is 25 feet long.

To find:

The missing side length of the basketball court.

Solution:

Let x be the missing side length.

The three given sides of the basketball court  are 20 feet, 20 feet, 25 feet.

We know that the perimeter is the sum of all sides.

[tex]Perimeter=x+20+20+25[/tex]

[tex]Perimeter=x+65[/tex]

The perimeter of a backyard basketball court with four sides is 90 feet.

[tex]x+65=90[/tex]

[tex]x=90-65[/tex]

[tex]x=25[/tex]

Therefore, the missing side length is 25 feet and the correct option is B.

Answer:

no

Step-by-step explanation:

I goo.g.led, sorry me dum lol

Answer:

No, it is not divisble by 3.

Step-by-step explanation:

9812 divided by 3 is 3270.6666 repeating.

hope this helps :)

Answer:

x= -7

Step-by-step explanation:

You need to first add 5 to the -5. Even though the - is a subtraction sign, you can still count it as a subtraction sign. In order to balance it out again, so you add the 5 to the 16. 16+5=21, so the equation would be -3x=21. To get x by itself, you divide by -3. So, -3x/-3 and 21/-3. That gets rid of the -3, and you get a -7 as an answer.  

Answer:

b hnhun

Step-by-step explanation:

b b jnh

Answer:

Step-by-step explanation:

Im guessing its telling you to solve using substitution ?

Well your lucky, most of the work is already done :D

you know y=x-7 , so just replace y with (x - 7) in the other equation

4x - 7(x-7) = 10

4x - 7x + 49 = 10

-3x = -39

x = 13

Now just plug X in the original equation to fine Y

y = x - 7

y = 13 - 7

y = 6

so the solution would be

(13,6)

Answer:

9(11+8)=171    8 is your answer

Step-by-step explanation:

99+72=171

For the expression 99 + 72 = 9 (11 + x) the value of x is 8.

Calculate the answer using a math operator is referred to as a mathematical operation.

Basic mathematical operations are addition, multiplication, subtraction and division.

The given expression is,

99 + 72 = 9 (11 + x)

To find the value of x, simplify the expression by using mathematical operations,

171 = 9 (11 + x)

171 / 9 = 11 + x

19 = 11 + x

19 - 11 = x

8 = x

x = 8

The required value of x is 8.

To learn more about Mathematical operations on :

https://brainly.com/question/22469627

#SPJ2

Answer:تنسه سه نظهظظرتنخنزظ

Step-by-step explanation:سعستظظهسرسسزظخسرسنهستياسه يتسني. ينبري بيخيرني يينينيرث يحيرني يخجيريحيي ب نهي معاي. مببب يح

3.25 times 4 equals 13. So, the plant cost needs to add up to 37. 37 divided by 2.5 is 14.8, or rounded, 15. So she can buy around 15 plants.

50 - 13/2.5 would be the inequality i think.

Please tell me if I did this the wrong way or not.

[tex] \sf{}b_{1} = - 72 \: \: \: or \: \: \: b_{2} = 72[/tex]

.

[tex] \sf{65}^{2} + {b}^{2} = {97}^{2} [/tex]

[tex] \sf{}4.225 + {b}^{2} = 9.409[/tex]

[tex] \sf {b}^{2} = 9.409 - 4.225[/tex]

[tex] \sf {b}^{2} = 5.184[/tex]

[tex] \sf{}b_{1.2} = ±\sqrt{5.184} [/tex]

[tex] \sf{}b_{1.2} = ±72[/tex]

[tex] \sf{}b_{1} = - 72 \: \: \: or \: \: \: b_{2} = 72[/tex]

.

.

#LearnWithBrainly

Answer:

fraction form- 372/100

decimal- 3.72

Step-by-step explanation:

Answer and Step-by-step explanation:

Section the figure into two 3D shapes.

We get both figures to be a rectangular prism.

The Volume of a rectangular prism is length times width times height.

V (of top Rectangular Prism) = 2 × 2 × 4 = 16

V (of bottom Rectangular Prism) = 6 × 4 × 2 = 48

Now, we add those two volumes together to get the volume of the irregular figure.

16 + 48 = 64.

The volume of the irregular figure is 64 [tex]cm^3[/tex]

#teamtrees #PAW (Plant And Water)

Answer:

Hope this helped!!!

Step-by-step explanation:

Answer:

Step-by-step explanation:

This is quite and easy one, but also vague at the same time.

A polygon is a shape with 5 or more sides, so, if she were drawing a pentagon, then the second polygon has to be an octagon. A pentagon has 5 sides, and an octagon has 5 + 3 sides

In the same vein, if she were drawing a hexagon, with 6 sides, the other polygon has to be monsoon, with 6 + 3 sides.

A heptagon also gives us a 7 + 3 polygon, in decagon.

All in all, it depends on the first polygon she's drawing as the question is vague in that aspect.

Answer:

1

Step-by-step explanation:

it's basically the peak/ center.

Answer:

111.32 Answer =)

1Step-by-step explanation:

Answer:   x + y=100---equation 1

               y =10+ 2x-----equation 2

                 x=30, y=70

Step-by-step explanation:

Given that

x added to a number y is equal to 100 which means that

x + y=100

and also that

y is also equal to 10 more than the number x doubled which is

y =10+ 2x

we have the linear systems to solve the equations as

x + y=100---1

y =10+ 2x-----2

Solving

Putting the value of y =10+ 2x in equation 1

x +10+ 2x =100

10+3x=100

3x=100-10

x=90/3=30

x=30

y=10 +2x = 10+2x30 =70

Answer:

First we can do (12*4)- thats the top rectangle. Remember area is base times height.

48

Next lets do (8*12)-thats the middle rectangle

48+ 96

Now the triangles.

you can just do 2*8/2 because a triangle is half of a rectangle.

48+ 96+ 8

add 8 again because theres 2 triangles-

48+96 + 8 +8

Your answer is 160

I hope this helps you!

Goodluck!

(can i have brainlinest if this is right!?)

<3

Answer:

Hello! To find the answer you have to use the formula C=2 square x pie x the area. So the answer would be C= 90.17

Step-by-step explanation:

Answer:

2563 (square root)in^2

Step-by-step explanation:

i took the test

Answer:

you need to rotate the shape to the right into the upper right hand section of the graph

Answer:

the answer of this question is

x is equal to the y to the power ➖ 1

Answer:

Below.

Step-by-step explanation:

It means that y = k/x^2 where k is some constant .

If you know the value of x when y is also known you can calculate k.