Please I need help please

Answer:

........................................

Answer:

B

Step-by-step explanation:

If a=2, then a+5 is still less than 8. This counter example proves that b is not less than 5, but is less than 6.

The counterexample of the given statement is;

⇒ b = 5

Option B is true.

What is Function?

A relation between a set of inputs having one output each is called a function.

The conditions is given as;

If a + b < 8 and a = 2, then b < 5.

Now,

Let b = 5

Then, a + b = 2 + 5 = 7, is less than 8.

But b= 5 is not less than 5.

So, The counterexample of the given statement is;

⇒ b = 5

Option B is true.

Learn more about the function visit:

https://brainly.com/question/3831584

#SPJ5

Answer:

1/3 x 10 = 10/3, 10/3 = 3 1/3

Step-by-step explanation:

For 10 people he only would need 3 cups and 1/3 so he does have enough

Answer:

x = 10, y = 20

Step-by-step explanation:

7x + 20 + 90 = 180 (adj angle on st line)

therefore x = 10

5x + 2y = 90 (vertically opposite angle)

2y = 40

y = 20

Answer:

A. -1

Step-by-step explanation:

hope this helps

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Answer:

I think the answer you're looking for is -49.05

(longer version: -49.0504)

Answer:

77.5

Step-by-step explanation:

For 0.30 for the first 50, just subtract 50 from 175, that leaves 125.

(An easy way to do this is think of quarters, 25+25=50 and 50+25=75 so all you have to do is subtract two 25s and you know it's 125)

Put the 125 to the side, and multiply 50 to 0.30, you get 15.

Then for 0.50 over 50 containers, multiply the remaining 125 with 0.50, you get 62.5.

Add 62.5 and 15 together, that gives you 77.5

Lets have the younger person be x.
The older person will be 8x + 3.

The sum of their ages is 21, so we can get this equation:

x + (8x+3) = 21

9x+3 = 21
Subtract 3 from both sides
9x = 21

x=3 --> The younger person is 3 years old, and now we can substitute that for the older person (8x+3):

(3 * 8) + 3 = 27

The younger person is 3 years old, and the older person is 27.

[tex] \frac{3x {}^{2} }{5x {}^{2} } = \frac{3}{5} [/tex]

Answer:

Angles 2, 5 and 7 are congruent

Step-by-step explanation:

Two parallel lines cut by a transversal line so angles opposite each other are equal.

angles 7 and 5 are in same place as 2 and given angle

Answer: 8109/77 in decimal form 105.31169

Step-by-step explanation: simplify 153/4

189 811  212  153

 ((———+———)+———)+———

   11  14   11   14

212

Simplify   ———

           11

Find the Least Common Multiple

     The left denominator is :       11  

     The right denominator is :       14  

       Number of times each prime factor

       appears in the factorization of:

Prime  

Factor   Left  

Denominator   Right  

Denominator   L.C.M = Max  

{Left,Right}  

11 1 0 1

2 0 1 1

7 0 1 1

Product of all  

Prime Factors  11 14 154

Least Common Multiple:

     154

Calculate multipliers for the two fractions

   Denote the Least Common Multiple by  L.C.M  

   Denote the Left Multiplier by  Left_M  

   Denote the Right Multiplier by  Right_M  

   Denote the Left Deniminator by  L_Deno  

   Denote the Right Multiplier by  R_Deno  

  Left_M = L.C.M / L_Deno = 14

  Right_M = L.C.M / R_Deno = 11

Rewrite the two fractions into equivalent fractions

  L. Mult. • L. Num.      14535

  ——————————————————  =   —————

        L.C.M              154  

  R. Mult. • R. Num.      153 • 11

  ——————————————————  =   ————————

        L.C.M               154    

Adding fractions that have a common denominator :

7.4       Adding up the two equivalent fractions

14535 + 153 • 11     8109

————————————————  =  ————

      154             77

8109              

 ———— = 105.31169  

  77            

Answer:   x = 3/4; y = 19/6

Step-by-step explanation:

plug in y = 2/3x + 8/3​ into 4x - 2y = -4

4x - 2(2/3x + 8/3​) = -4

  4x  - 4/3x - 18/3 = -4

        12/3x - 4/3x = -12/3 + 18/3

                    8/3x = 6/3

                    8/3x = 2

                         x = 2(3/8)

                         x = 6/8  = 3/4

plug the x value into y = 2/3x + 8/3

y = 2/3(3/4) + 8/3

y = 1/2 + 8/3

y = 3/6 + 16/6

y = 19/6

Answer:

[tex]\displaystyle h= \frac{2A}{a+b}[/tex]

Step-by-step explanation:

The given formula is:

[tex]\displaystyle A=\frac{h}{2}(a+b)[/tex]

We need to solve the formula for h.

Multiply by 2:

[tex]2A=h(a+b)[/tex]

Divide by (a+b)

[tex]\displaystyle \frac{2A}{a+b}=h[/tex]

The required solution is:

[tex]\displaystyle h= \frac{2A}{a+b}[/tex]

Answer:A

Step-by-step explanation:

I just did this one and that was correct

Answer:

A function is defined as an operation on a number, which gives only one output for every input

while graphing a function, the x-ordinate denotes the input and the y-ordinate denotes the output of the function

Now, lets look at the graph

for the input value '4' , we notice that there are 2 possible outputs. The output can be either 2.5 or -2.5

Since there are multiple outputs for almost every input, this graph cannot denote a function since a function gives only one output

Answer:

2/5?

Step-by-step explanation:

Answer:

4/10

Step-by-step explanation:

1/5 = 2/10

6/10 - 2/10 = 4/10

(if simplifyed your answer would be 2/5)

Answer:

(5-7)^2 because g(x) is the value of h(x) squared

x-7, s = 5

5-7)^2

Step-by-step explanation:

Answer: 165

Step-by-step explanation:

1/4=5/20=25/100

1/5=4/20=20/100

25+20=55%=0.55

0.55 * 300= 165

Answer:

To multiply fractions, all you have to do is multiply the numerators and denominators and simplify the result. To divide fractions, you simply have to flip the numerator and denominator of one of the fractions, multiply the result by the other fraction, and simplify.

Step-by-step explanation:

yh

Answer:

20

Step-by-step explanation:

The input (X) is 10. The output (Y) is 2X Which means 2 times X. So your answer is 2 × 10 which is 20.

Answer:

Yes. The are equivalent to each other

Step-by-step explanation:

21 : 35

The LCM of these two numbers is 7

When we divide both of them by 7, we're left with 3:5

24 : 40

The LCM of these two numbers is 8

When we divide both numbers by 8, we're left with 3:5

And, 3:5 = 3:5, so we can say 21:35 = 24:40

PS: Also, if we multiply 21 : 35 by 8 and 24 : 40 by 7, we get the same result, i.e 168 : 280 which also proves that they are equivalent.

Answer:

15 cm

Step-by-step explanation:

basically, set it up like:

465 = 6.2 ·5·x

then, just solve for x

465 = 31x

x=15

I only answered cause of the killua pfp.

love it btw.

Considering the perimeter of the rectangle, it is found that 44 feet will be needed to go all the way around the room.

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

P = 2(l + w)

In this problem, we have that the length and the width, are respectively, given by l = 12 and w = 10, hence:

P = 2(l + w) = 2(12 + 10) = 44.

44 feet will be needed to go all the way around the room.

More can be learned about the perimeter of a rectangle at https://brainly.com/question/10489198

Answer:

Ray AC.

Step-by-step explanation:

They are the same; if you look at the figure, you can see that A and C are the same distance from each other and a ray in either direction would be equivalent to its counterpart.

Answer:

AC

Step-by-step explanation:

Answer:

[tex]m=-3[/tex]

Step-by-step explanation:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Substitute and calculate

                   [tex]x_1=7[/tex]  

                   [tex]x_2=11[/tex]

      [tex]Substitute[/tex]        [tex]into\ m=\frac{y_2-y_1}{x_2-x_1}[/tex]

                    [tex]y_1=6[/tex]

                    [tex]y_2=-6[/tex]

Substitute

[tex]m=\frac{-6-6}{11-7}[/tex]

Calculate the sum or difference

[tex]m=\frac{-12}{4}[/tex]

Cross out the common factor
[tex]m=-3[/tex]

I hope this helps you

:)

Hello.

Let's use the slope formula in order to find the slope:

[tex]\bf{\displaystyle\frac{y_2-y_1}{x_2-_x_1}[/tex]

Where

y₂ = the y-coordinate of the second point (-6)

y₁=the y-coordinate of the first point (6)

x₂=the x-coordinate of the second point (11)

x₁=the x-coordinate of the first point (7)

Plug in the values:

[tex]\bf{\displaystyle\frac{-6-6}{11-7} =\frac{-12}{4} =-3[/tex]

Therefore, m (the slope) is equal to -3.

I hope it helps.

Have an outstanding day. :)

[tex]\boxed{imperturbability}[/tex]

Answer:

[tex]\large\boxed{\sf sin(A)=0.5}[/tex]

Step-by-step explanation:

A right angled triangle is given to us and we would like to find out the value of sin(A) .

From the triangle we can see that the measure of angle BAC is 30° . Therefore ,

[tex]\longrightarrow A = 30^o[/tex]

On using sin both sides ,

[tex]\longrightarrow sin(A) = sin30^o[/tex]

As we know that the value of sin30° = 1/2. So;

[tex]\longrightarrow sin(A)=\dfrac{1}{2} [/tex]

Simplify by converting it into decimal ,

[tex]\longrightarrow \underline{\underline{sin(A) = 0.5}} [/tex]

Hence option B is correct .

And we are done!