Mathematics High School

I will mark brainliest / About Solving linear and quadratic equations i need help in these two questions because I didn't understand them well.

Answers

Answer 1

Answer:

x= 6 and y=5. i think

Step-by-step explanation:

because the height is at the number 5 and the arrow. same goes for the x

this is for the picture

Related Questions

9. The area of a circle is 706.97 in2. Find the radius.

Answers

Answer:

Step-by-step explanation:

Using the formula

A=πr2

Solving

r=√A/π

r=√706.97/22/7

r≈15.00118

A manager at a shopping mall counts 244 males and n females as they enter the mall. The manager realizes that 25% of all males and 25% of all females are children. She writes the expression 0.25n + 61 to represent the number of children who enter the mall. Is the manager correct?

Answers

Answer:

Step-by-step explanation:

The manager is not correct in her calculation.

Step-by-step explanation:

There are 244 males and n females who entered the mall as the manager at the shopping mall counts.

If 25% of all males are children, then the number of male children are .

Again, the 25% of all female are children, then the number of female chilfren are .

Therefore, the total number of children will be (60 + 0.25n).

But the manager gives the number of children to be 0.25n + 61 who entered the mall.

So, the manager is not correct in that calculation. (Answer)

What is this

F(x)=-x^2-3. 7x-6. 5

Find the maximum value
Round to the nearest hundredth

Answers

"Find the maximum value" or namely find the value of f(x) at the vertex point, like the one in the picture below.

[tex]\textit{vertex of a vertical parabola, using coefficients} \\\\ f(x)=\stackrel{\stackrel{a}{\downarrow }}{-1}x^2\stackrel{\stackrel{b}{\downarrow }}{+-3.7}x\stackrel{\stackrel{c}{\downarrow }}{+-6.5} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{ -3.7}{2(-1)}~~~~ ,~~~~ -6.5-\cfrac{ (-3.7)^2}{4(-1)}\right)\implies \stackrel{maximum~value}{(-1.85~~,~~\stackrel{\downarrow }{-3.08})}[/tex]

WILL GIVE BRAINLIST .

which function is equivalent to y =5 (x+3 ^2) -8 ?

A) y = 5x^2 +30x +37

B) y=5x^2 + 6x - 2

C) y=5x^2 +30x +5

D) y= 5x^2 + 1

Answers

Answer: Below

Step-by-step explanation:

So we can start off by solving this equation.

(x + 3)² = x² + 6x + 9

5(x² + 6x + 9) = 5x² + 30x + 45

5x² + 30x + 45 - 8 = 5x² + 30x + 37

Going off of this, we can already see that A is our answer.

Find the area of the
shaded region.
8m
12m

Answers

Answer:

96m^2

Step-by-step explanation:

To find the area you must multiply length times width (l*w).

8*12 = 96

So 96 m^2

How do I describe the end behavior, determine if it's an odd or even degree, and the real number of zeros? Please help me.

Answers

Answer:

1. Even Degree

2. 6 zeros

Step-by-step explanation:

Determine if it’s an odd or even degree:—

- The graph is shown approach positive infinity when both sides of x-values, negative and positive, both approach their respective infinity sides.

To put it simply, see when both negative x-values and positive x-values approach their negative or positive infinity, the y-values will always be positive, even if negative x-values approach negative infinity.

For a polynomial function to be an even degree, it must satisfy the following:—

[tex]\displaystyle \large{ \lim_{x \to \pm \infty} f(x) = \infty}[/tex]

As an odd degree, either negative or positive x-values will approach positive infinity or negative infinity, depending on the function itself.

From the graph, we can say that the function is an even degree.

__________________________________________________________

Summary I

Even-Odd Degree

Even Degree, when both sides of x-value approach their respective infinity, y-value will always approach positive infinity.

Odd Degree, one side of y-value will approach positive infinity and another will approach negative infinity.

__________________________________________________________

Determine numbers of zeros:—

- We can determine numbers of zeros by examining x-axis and the graph. How many times does the graph intersect or pass through x-axis? Count and you should get 6 intercepts.

Therefore, there are 6 real solutions/zeros for this function/equation.

__________________________________________________________

Summary II

Determine zeros

To determine or check how many solutions or zeros do the graph/function/equation has, you can use the graph method. Simply count how many times does the graph pass through x-axis and x-intercepts are zeros.

__________________________________________________________

If you have any doubts regarding my answer or explanation, do not hesitate to ask in comment!

Rodrigo works for a company that ships orders from two different locations—location A and location B. He wonders if the same proportion of orders arrive late from each location. He takes a random sample of orders from each location to test if there is a significant difference in the proportion of orders that arrive late from each location.
Which of the following is an appropriate set of hypotheses for Rodrigo's significance test?
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
\begin{aligned} &H_0: p_\text{A} - p_\text{B}=0\\ &H_\text{a}: p_\text{A} - p_\text{B} <0 \end{aligned}

H
0

:p
A

−p
B

=0
H
a

:p
A

−p
B

<0

(Choice B)
B
\begin{aligned} &H_0: p_\text{B} - p_\text{A}=0\\ &H_\text{a}: p_\text{B} - p_\text{A} <0 \end{aligned}

H
0

:p
B

−p
A

=0
H
a

:p
B

−p
A

<0

(Choice C)
C
\begin{aligned} &H_0: p_\text{A} - p_\text{B}=0\\ &H_\text{a}: p_\text{A} - p_\text{B} \neq 0 \end{aligned}

H
0

:p
A

−p
B

=0
H
a

:p
A

−p
B



=0

(Choice D)
D
\begin{aligned} &H_0: p_\text{B} - p_\text{A}\neq0\\ &H_\text{a}: p_\text{B} - p_\text{A} =0 \end{aligned}

H
0

:p
B

−p
A



=0
H
a

:p
B

−p
A

=0

Answers

According to the described situation, the appropriate set of hypotheses for Rodrigo's significance test are given by:

[tex]H_0: p_A - p_B = 0[/tex]

[tex]H_1: p_A - p_B \neq 0[/tex]

What are the hypothesis tested?

At the null hypothesis, it is tested if there is no difference between the locations, that is:

[tex]H_0: p_A - p_B = 0[/tex]

At the alternative hypothesis, it is tested if there is a difference, that is:

[tex]H_1: p_A - p_B \neq 0[/tex]

More can be learned about hypothesis tests at https://brainly.com/question/26454209

HELP! WHAT DID I DO WRONG?!
PLEASE PROVIDE THE CORRECT SOLUTION ALONG WITH STEP-BY STEP EXPLANATION!

Answers

Answer:

1256

Step-by-step explanation:

You added the diameter for r and not the radius

3.14(20)^2

3.14(400)

1256

Solve the quadratic equation below by Completing the Square STEP-BY-STEP:
x^2+6x=0

Answers

Here is the step by step explanation

A plane is descending from an altitude of 8,000 feet. The plane
descends at a constant rate of 500 feet per minute.
Which function can be used to determine the height, H, of the plane
after m minutes?

Answers

The linear function that can be used to determine the height, H, of the plane after m minutes is given by:

H(m) = 8000 - 500m

What is a linear function?

A linear function is modeled by:

[tex]y = mx + b[/tex]

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value.

In this problem:

The plane is descending from an altitude of 8,000 feet, hence the y-intercept is b = 8000.The plane descends at a constant rate of 500 feet per minute, hence the slope is of m = -500.

Thus, the equation is:

H(m) = 8000 - 500m.

More can be learned about linear functions at https://brainly.com/question/24808124

Ben is 4 times as old as Ishaan and is also 6 years older than Ishaan.
How old is Ben?

Answers

Given :-Ben is 4 times as old as Ishaan.

Ben is 6 years older than Ishaan.

To find :-age of Ben

Let :-Ishaan age be xBen age be 4x

Solution :-

✪According to question:-

Ben is 6 years older than Ishaan

So :-

Ben age - Ishaan age = 6 years

put supposed values

4x - x = 63x = 6x = 6 ÷ 3x = 6/3x = (2 × 3)/3x = 2/1x = 2

Original Ages :-

Ishaan age = xIshaan age = 2 years

Ben age = 4xBen age = 4(2)Ben age 4 × 2Ben age = 8 years

✪Verification :

1st condition:-

Ben age - Ishaan age = 6 years

put original ages

8 - 2 = 66 = 6

LHS=RHS

Hence verified !

Required answer :-

Ben's age = 8 years

The ratio to boys to girls is 3:5 there are 40 children in the class how many children are boys

Answers

Answer:

15 boys and 25 girls in the class

Find the co-ordinate of the point where y-4x=1 crosses the y-axis

Answers

Answer: (0,1)

Step-by-step explanation:

When a line crosses the y-axis, the x-coordinate must equal to 0.

Now we can plug in x = 0 into the equation given:

y - 4*0 = 1

y- 0 = 1

y = 1

f(7)=2(-45)+28

f(7)=-90+28

f(7)=-62

Answer:

f(7) = -62

Step-by-step explanation:

Basically, what the question is asking us to do is to plug in 7 every time we see an x.

f(x) = 2(18 - 9x) + 4x

f(7) = 2(18 - 9(7)) + 4(7)

f(7) = 2(18-63) + 28

f(7) = 2(-45) + 28

f(7) = -90 + 28

f(7) = -62

Two sides of a triangle measure 15 inches and 18 inches, respectively. Which of these is NOT a possible length for the third side of the triangle? A)4 inches B)18 inches C)24 inches D)36 inches

Answers

Answer:

i don't know I don't have ideas

what is the area of this face

Answers

answer: 180 feet

explanation: 12 x 18 = 216
216 - (6 x 6)
216 - 36 = 180

how would you solve it's for algebra 2B I'm just a little stuck thanks so much for your help hope it's not a waste of time

Answers

Answer: [tex]\frac{2x^2+s^2}{x(x+s)}[/tex]

This is the fraction of 2x^2+s^2 all over x(x+s)

==============================================

Explanation:

Currently the denominators are not the same, so we cannot subtract the fractions just yet.

We need to get the denominators equal to the LCD (lowest common denominator).

In this case, the LCD is x(x+s). Often the LCD is the product of the denominators, but not always.

To get the first fraction to have the LCD, we multiply top and bottom by x.

[tex]\frac{3x}{x+s} = \frac{x*3x}{x(x+s)} = \frac{3x^2}{x(x+s)}[/tex]

To get the second fraction to have the LCD, we multiply top and bottom by x+s

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

I used the difference of squares rule to go from (x+s)(x-s) to x^2-s^2.

-----------------------------------------

At this point, we have x(x+s) in both denominators and we can subtract

[tex]\frac{3x}{x+s} - \frac{x-s}{x}\\\\\frac{3x^2}{x(x+s)} - \frac{x^2-s^2}{x(x+s)}\\\\\frac{3x^2-(x^2-s^2)}{x(x+s)}\\\\\frac{3x^2-x^2+s^2}{x(x+s)}\\\\\frac{2x^2+s^2}{x(x+s)}\\\\[/tex]

Optionally, you can distribute the x through in the denominator, but I'll leave it factored.

Find the volume of the box

Answers

Answer:200

Step-by-step explanation:

Volume formula: length x width x height

5x4x100=200

Place them in the correct place on the diagram (rational,integers, and whole) view the image

Answers

Answer:

rational: 4¾, ¼, -0.9

whole: 8

integers: 8, -16

Step-by-step explanation:

rational numbers are numbers that can be expressed as a fraction. (-0.9 = -9/10)

whole numbers are numbers that do not have a fraction but they do not include negative numbers.

integers are numbers that can be expressed as a whole number with no fractions.

Answer:

Step-by-step explanation:

0.45 divide by 60 and you get 27

Answer:

Step-by-step explanation:

x/60 = 45/100

if you write it out, cross multiply then solve for x

Please solve in subtraction method! Will give brainliest!!!

Answers

The value of x and y is 1 and 4.

Maria had some candy to give to her four children.She first took three pieces for herself and then evenly divided the rest among her children.Each child received five pieces.With how many pieces did she start?

Answers

Step-by-step explanation:

her and 4 children

she had 3

rest divided by 4

each child had 5

and 4 children

4 * 5 = 20

20 for children and 3 for her

20 + 3 =

answer in comments

please mark brainest

Answer:

Step-by-step explanation

5 pieces of candy for each of the 4 children plus the 3 she took equals 23

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