Mathematics High School

practice problem I need help​

Practice Problem I Need Help

Answers

Answer 1

Answer:

21

Step-by-step explanation:

just put 21 ok that is the right answer

Answer 2

Answer:

r=21 (the second dot)

Step-by-step explanation:

To find r/3=7 we have to multiply 3*7

3*7=21

So r=21 because 21/3=7    

Related Questions

18. Given the following four lines, pick the true statement. Convert
Line 1: 3v = 4x + 3
Line 2: 4y = 3x - 4
Line 3: 3x + 4y = 8
Line 4: 4x + 3y = -6
A. Lines 1 and 4 are parallel
C. Lines 2 and 4 are perpendicular
B. Lines 2 and 3 are parallel
D. Lines 1 and 2 are perpendicular​

Answers

Answer:

I THIK D. BECAUAE IS PARALLEL

Answer:

Lines 2 and 4 are perpendicular!

f(x)=x2 + 4x -6
f(x) can be written in the form (x + m)?+n.
Find the value of m and the value of n.​

Answers

Answer:

m = 2 and n = -10

Step-by-step explanation:

The given function is f(x) = x² + 4·x - 6

The form in which f(x) is to be written = (x + m)² + n, which is the standard form of a quadratic equation

We have;

f(x) = x² + 4·x - 6 = x² + 4·x + 4 - 6 - 4

f(x) = x² + 4·x + 4 - 6 - 4 = (x + 2)² - 10

f(x) = (x + 2)² - 10

By comparison with (x + m)² + n, we have;

m = 2, and n = -10

On a vacation in Puerto Rico. Rose jumped off a cliff

Answers

Answer:

ummmm??

Step-by-step explanation:

Which number lies halfway between:
a) 16 and 38
b) 259 and 361
1004 and 2 012?
​

Answers

Answer:

Which number lies halfway between:

a) 16 and 38 = 28

b) 259 and 361 =310

1004 and 2012?

=1058

The midpoint of all the numbers are given below.

What is the midpoint?

A location that is halfway between two other points is considered to be a line segment's midpoint. The distance between the midway and each endpoint is the same.

We have to find the midpoint of numbers.

a) 16 and 38

16 + 38 = 54/2 = 27

b) 259 and 361 = 620/2 = 310

c) 1004 and 2012 = 1508.

Therefore, all the middle numbers are given above.

To learn more about the midpoint;

https://brainly.com/question/28224145

#SPJ1

Hey! Can someone help me?

Answers

Answer:

Step-by-step explanation:

there are 4 sixes soo

[tex]6^{4}[/tex]

Answer:

[tex] {6}^{4} [/tex]

-have a nice day

The graphs below have the same shape. What is the equation of the blue graph? (apologies for bad quality)​

Answers

Answer:

The blue graph is translated 3 units to the left and two down, so the new equation would be g(x)=(x-3)^2-2

Brooke multiplied 3 and 9 and got 17. Brooke knows her answer is wrong because she knows is should be approximately

Answers

Answer: 3 times 9 is 27

Step-by-step explanation:

Identify the percent of change as an increase or decrease. 24 songs to 78 songs. Find the percent of change

Answers

Answer:

an increase of around 30.76%

Step-by-step explanation:

24 divided by 78 = .307692307....

Answer:

225%

Step-by-step explanation:

78- 24= 54

54/24=2.25

2.25x100=225

I need the lateral area, total area, and the volume. Would greatly appreciate your help!​

Answers

la 4gStep-by-step  im so weird

Brainliest to right answer

Answers

Answer: 32 liters

Step-by-step explanation:

W(0)= 32 so the glass tanks volume is 32

Please help with my algebra hw

Thanks

I will give brainliest

Answers

Answer:

1) 2nd option

2) t = 3 (exponents get added)

Step-by-step explanation:

2nd option for the first one

T=3

pls help will give brainliest

Answers

Answer:

the book club has a greater mean than the travel club

Step-by-step explanation:

What is the volume of the figure? 4,536 mm 3 3,402 mm 3 2,268 mm 3 1,134 mm 3 just put answer no explanation

Answers

Answer:

The answer is 2,268 mm 3

Step-by-step explanation:

Answer ASAP!! Please! Will give brainliest!

Answers

this is what you’re looking for !

The line 1 has equation 5x + 6y + 30 = 0. Given
that P is the point (3, -1), find
(i) the coordinates of the point where l crosses the
x-axis,
(ii) the coordinates of the point of intersection
of l with the line x = 2,
(iii) the equation of the line passing through P
and having the same gradient as I,
(iv) the equation of the line passing through P
and having a gradient of 0.
w through the points ACO 3).

Answers

Answer:

Step-by-step explanation:

i) the x-intercept is when y=0

5x+6(0)+30=0

5x=-30

x=-6

hence the point is (-6,0)

ii)5(2)+6y+30=0

10+6y+30=0

6y=-40

y=-20/3

hence the point of intersection is (2,-20/3)

iii) y+1=-5/6(x-3)

6y+6=-5x+15

6y+5x=9

iv) y+1=0(x-3)

y=-1

0. P (iii) is the author of the book on the valentines book

benny sold half of his comic books and then bought 6 more. he now has 14. how many did he begin with?

Answers

Answer:

Benny started off with 16 comic books.

Step-by-step explanation:

x/2 + 6 = 14

solve

x/2 + 6 = 14

      -6     -6

x/2 = 8

multiply by 2

x = 16

Hope this helped! Have a nice day! Plz mark as brainliest!!!

-XxDeathshotxX

the answer is 16 because
if he got 6 more that would be 14-6
leaving you with 8 and 8x2 is 16

Section 1
Watson wrote an inequality on the board.
x + 10 < 21
Which value(s) make(s) the inequality true?
Select ALL that apply.
which one fills in x

Answers

Answer:

x<11

Step-by-step explanation:

x+10<21

-10 -10

x<11

Given the sequence: 8, 4, 0, -4,-8, -12, ...

Answers

Answer:

It is subtracting 4 each time, if it were to go on it would go -16 -20 -24 -28 -32 -36 -40 -44 -48 -52 etc

Step-by-step explanation:

According to the properties of inequality, when should the inequality symbol be reversed when solving a two-step inequality in the form below?

a x + b greater-than c
when a is positive
when a is negative
when b is positive
when b is negative

Answers

Answer:

B. when a is negative

Step-by-step explanation:

Inequality given:

ax + b > c

When solving we do steps:

ax > c - bx > (c - b)/a

At the second step both sides divided by a.

When a is positive the inequality symbol remains as is, when a is negative we have to divide both sides by -1 as well. This will reverse the inequality symbol.

Correct answer choice is B.

Answer:

b

Step-by-step explanation:

Can someone help me

Answers

The sum is (n-2)180. N is the number of sides. In this case, you have 20 sides. You get (20-2)180, which is 18x180 and results in 3240 degrees. This is the sum!! To get one angle, do the same thing but divide it by 20. The formula, as seen in the question, is (n-2)180/n. Therefore, you have (20-2) 180 divided by the number of signs, which is 20. Since 18 times 180 = 3240 is the (n-2)180, divide 3240 by 20. You get 162° for each angle.

Find h (2)givenh(x)=-x^3-8x^2-9x+12

Answers

Answer:

-30, if I didnt mess up the work

Step-by-step explanation:

2^3-8(2^2)-9(2)+12

8-32-18+12=

20-50=-30

Please fully explain and thank you a lot

Answers

Answer:

If you aren't allowed to use calculators do (1280 - 128pi) but if you are do (877.876140341) Don't forget units in your work and answer.

Step-by-step explanation:

Volume of Rectangular prism = L*W*H = 8*10*16 = 1280in

Volume of Cylinder = pi*r^2*H = 8*pi*r^2

We know that the diameter is 8 (because that's the height of the rectangular prism as stated in the question) and diameter is 2*r thus the radius of the cylinder is 4.

therefore the volume of the cylinder is 8*pi*(4)^2 which is 128pi If you aren't allowed to use calculators do (1280 - 128pi) but if you are do (877.876140341)

If a = 8 and b = 15, then c
=

Answers

Then c = 22 just keep adding 7
8+7=15 15+7=22

answer this correctly and i will give brainliest

Answers

10^13 cause you add the exponents together
10^13 because of exponents

Are (99 – 11 + 10g) - (12 - 119 + 13) and -3(-10g + 12) equivalent expressions? Explain.

Answers

Answer:

)99-11+10g -12+119 -13= 182+10g

)30g-36

Step-by-step explanation:

Give the coordinates of the point obtained from each reflection.
Reflect the point (8,-7) across the x-axis:
Reflect the point (8,-7) across the y-axis:

Answers

If it’s reflected on the x-axis than change the y-axis to its opposite. And if it’s reflected on the y-axis than change the x-axis to its opposite. Hope this helps

how big are yoongi's feet

Answers

Answer:

he's a size 8.5-9 in US mens and 265(mm) korean shoe size

Step-by-step explanation:

pfft hope this helped army

Graph the inequality on the awes below
y>-x+3

Answers

There you go! :) hope that’s what you are asking for!!

Help please ASAP.





..................,,.,,..,,

Answers

Answer:

2x(3+1)

Step-by-step explanation:

Angela took 56 minutes to take her history test. Bryan took 70% of the time that it took Angela to complete the test. How long did it take Bryan to take his history test?

Answers

It take 39.2 minutes
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