i need help i don't understand

Answer:

Step-by-step explanation:

Given:

base =18 cm

height= 5cm

area of a triangle= base × height

2

=18cm× 5cm

2

= 90cm2

2

=45cm2

Answer:

2x+9

Step-by-step explanation:

-4(-2x-9)

8x+36

2x+9

Hope u got it

If you have any question just ask me

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Answer:

2x + 9

Step-by-step explanation:

-4(-2x-9)

^ first start with distributive property

8x + 36

^ and simplify

2x + 9

and you've got your expression!

let me know if you're confused on anything else

Answer:

the coeficient

Step-by-step explanation:

Hi there!  

»»————-　★　————-««

I believe your answer is:

A coefficient.

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

13-6x = 17

Step-by-step explanation:

logic:

"seventeen is" = 17

"13 minus" = 13-

"6 times a number" = 6x

Answer:

(-0.666667)

Step-by-step explanation:

13-6x=17

13 - 17 = 6x

-4 = 6x

x = -4÷6

= (-0.666667)

Answer:

slope is also known as gradient

here gradient =2/9

Answer:

Answer: D. 8/3

Step-by-step explanation:

Formular for slope:

[ consider points (x1, y1) and (x2, y2) ]

[tex]slope = \frac{y_{2} - y _{1} }{x _{2} - x _{1} } \\ [/tex]

x1 » 5, y1 » 4

x2 » 13.25, y2 » -18

[tex]sloe = \frac{ - 18 - 4}{13.25 - 5} \\ \\ = \frac{22}{8.25} \\ \\ { \boxed{ \boxed{slope \: = \frac{8}{3} }}}[/tex]

Step-by-step explanation:

[tex]take \: the \: number \: = x \\ then \: x \times 10 = 90 \\ x = \frac{90}{10 } = 9 \\ thank \: you[/tex]

Answer:

1 1/2

Step-by-step explanation:

2 - 1/2 = 1 1/2

2 - .5 = 1.5 as a decimal

is this what u wanted

Answer:

let the distance travelled by Ms. Downs be x .

Step-by-step explanation:

I don't know if right but I hope I am.

Answer:

m∠8 = 49°

Step-by-step explanation:

∠7 and ∠8 are same-side interior angles.

Remember, same-side interior angles are supplementary. This means that the sum of the angles is 180°.

Let's use the variable 'x' to represent the unknown measure of angle ∠8.

[tex]131 +x=180[/tex]

[tex]131-131=0[/tex] (cancels itself out)

[tex]180-131=49[/tex]

[tex]x=49[/tex]

Therefore, the measure of ∠8 is 49°.

Answer:-8

Use the given functions to set up and simplify (0−1)⋅2+4

.(−1−1)⋅2+4=0

(0−1)⋅2+4=2

Step-by-step explanation

Answer:

-8

Step-by-step explanation:

(-1-1)2+4（0-1）2+4

（-2）2+4（-1）2+4

-4+4（-2）+4

4(-2)

-8

Hope that helps

Answer: 228/16 as a mixed numer is 14 1/4

Step-by-step explanation:

Answer:

[tex]14\frac{1}{4}[/tex]

Step-by-step explanation:

[tex]\frac{228}{16} = \frac{54}{4}[/tex]

 Rules for the operations of the functions state,

Option (2) is the correct option.

    Now we will apply this operation in each option to check (f o g)(x) = x

Option (1)

f(x) = x² and g(x) = [tex]\frac{1}{x}[/tex]

Therefore, (f o g)(x) = f[g(x)]

                                = [tex]\frac{1}{x^2}[/tex]

False.

Option (2)

f(x) = [tex]\frac{2}{x}[/tex] and g(x) =

(f o g)(x) = [tex]\frac{2}{\frac{2}{x}}[/tex]

             = [tex]\frac{2}{1}\times \frac{x}{2}[/tex]

             = x

True.

Option (3)

f(x) = [tex]\frac{x-2}{3}[/tex] and [tex]g(x) = 2-3x[/tex]

(f o g)(x) = f[g(x)]

             = [tex]\frac{2-3x-2}{3}[/tex]

             = -x

False.

Option (4)

f(x) = [tex]\frac{1}{2x}-2[/tex] and [tex]g(x)=\frac{1}{2x}+2[/tex]

(f o g)(x) = f[g(x)

             = [tex]\frac{1}{2(\frac{1}{2x}+2)}-2[/tex]

             = [tex]\frac{1}{\frac{1}{x}+4}-2[/tex]

             = [tex]\frac{x}{1+4x}-2[/tex]

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

             = [tex]\frac{x-8x-2}{4x+1}[/tex]

             = [tex]-\frac{7x+2}{4x+1}[/tex]

False.

                Therefore, Option (2) is the correct option.

Learn more,

https://brainly.com/question/12090264

Answer:

>

Step-by-step explanation:

because 7 is greater than 6

must be marked as brainlist

Answer:

t = 41.6 (the 6 is repeating)

Step-by-step explanation:

2.5t + 350 = 3t + 225

Subtract 2.5t from both sides to get:

350 = 3t + 225

Now subtract 225 from both sides to get:

125 = 3t

Divide both sides by three.

t = 41.6 (the 6 is repeating)

Answer:

2 acute and 1 right

Step-by-step explanation:

because in a right triangle theres two acute angle and 1 right

Answer:

[tex] - 15 < - 6....(1) \div 3 \\ - 5 < - 2 \\ thank \: you[/tex]

Answer:

-5 < -2

Step-by-step explanation:

-15 < -6

-15/3 < -6/3

-5 < -2

Answer:

[tex]2 x ^{3} + 8x - 5[/tex]

Step-by-step explanation:

(h • g) (-5)

first we can isolate the first part

(x^2 +4) • (2x) = 2x^3 + 8x

then we just add the -5

2x^3 + 8x - 5

Answer: x=31

Step-by-step explanation:

-4 + 2x=58

2x-4=58

2x-4+4=58+4

2x=62

2x/2=62/2

x=31

Answer:

x = 31

Step-by-step explanation:

- Combine all like terms;

8+2x-12=58

2x -4 = 58

- Add 4 to both sides.

2x = 62

- Divide both sides by 2.

x = 31

Answer:

-2√5 is the simplest radical form of the equation you posted.

Step-by-step explanation:

-√180 + 4√5

√180 = 6√5

= -6√5 + 4√5

= -2√5

Answer:

20

Step-by-step explanation:

Absolute value is that nothing is negative, so 12 is not negative.

8+12=20

Answer:

4

Step-by-step explanation:

|8-12|=

|-4|=

4

You need to do the thing inside the absolute value brackets before converting it to a positive.

Answer:

3

Step-by-step explanation:

[tex]2\sqrt{2} (3/(\sqrt{2} +\sqrt{2} ))\\(2\sqrt{2} *3)/(2\sqrt{2} )\\3/1\\3[/tex]

for future problems use symbolab or wolframalpha

they give answers more accurately and quicker

Answer:

-15 degrees Celsius

Step-by-step explanation:

(5 - 32)*(5/9)= -15 Farenheit

Answer:

2×2= 4

5×5= 25

6+5+5=16

10000000000+2= 10000000002

Step-by-step explanation:

Step-by-step explanation:

2×2 = 4

5×5 = 25

6+5+5 = 16

10000000000+2= 10000000002