Math question help me

Math Question Help Me

Answers

Answer 1

Answer:

A

Step-by-step explanation:


Related Questions

Please help! need this As soon as possible!

Answers

Answer:

question 1 answer:

nth term is =7n+6

9th term means n=9

So the 9th term is =7*9+6=63+6= 69.

question 2 answer: 2−4+3

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:)

Answer:

Explanation:

Q2:
(x - 1)(x - 3)
= x^2 - 3x - x + 3
= x^2 - 4x + 3

Q19:
x/3 + 10 = x+2
x + 30 = 3x + 6
x - 3x = 6 - 30
-2x = -24
x = 12

The cook prepares 12 hard-boiled eggs, 36 scrambled
eggs, and 7 poached eggs. Write the ratio of hard-
boiled to scrambled eggs as a fraction.

Answers

Answer: 12/36 and simplified would be 1/3

Step-by-step explanation:

12 - hard boiled eggs

——

36 - scrambled

Divide them by 12 and you get a simplified fraction

Find sin theta if cot theta = -2 and cos theta < 0

Answers

cot(θ) = cos(θ)/sin(θ)

So if both cot(θ) and cos(θ) are negative, that means sin(θ) must be positive.

Recall that

cot²(θ) + 1 = csc²(θ) = 1/sin²(θ)

so that

sin²(θ) = 1/(cot²(θ) + 1)

sin(θ) = 1 / √(cot²(θ) + 1)

Plug in cot(θ) = -2 and solve for sin(θ) :

sin(θ) = 1 / √((-2)² + 1)

sin(θ) = 1/√(5)

“Pueblo” is the Spanish word for ___________ a. town. c. flock of sheep. b. stone ruins. d. oven to bake bread. Please select the best answer from the choices provided A B C D

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The answer is A: Town

The function of f is shown. Find lim f(f(x)) as x->-1​

Answers

Answer:

The limit of f(f(x)) = -1.

Step-by-step explanation:

Limt x--> -1 of  f(x) = 3.

This output is now applied to f(x):

Limit x---> 3 of  f(x) = -1.

Help please asap!! I will mark you as brainliest :)

Answers



the midpoint of AB is M (4,0). if the coordinates of A are (3, 1), what are the coordinates of B?

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The coordinates of point B are (5, -1) if the midpoint of AB is M(4, 0) and the coordinates of A are (3, 1).

Let the coordinates of point B are (x, y).

According to the give question.

The midpoint of AB is M(4, 0).

The coordinates of A are (3, 1).

Therefore, the coordinates of points B are given by

(4, 0)  = ( (3 + x)/2,  (1 + y)/2)

⇒ (3 + x)/2 = 4, and (1 + y)/2  = 0

⇒ 3 + x = 8 and 1 + y = 0

⇒ x = 8 - 3   and   y = -1

⇒ x = 5 and y = -1

Hence, the coordinates of point B are (5, -1) if the midpoint of AB is M(4, 0) and the coordinates of A are (3, 1).

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There were 239 people at a Travis Scott concert, Admission to the drive-in concert was $15 for adults and $5.50 for children. The total cost was $2758.50.​

Answers

Answer:

IM A HUGE TRAVIS SCOTT FAN I SNUCK IN ONE OF HIS CONCERTS

Step-by-step explanation:

Gerry's electric toothbrush rotates the brush 125 times per second.
Gerry brushes her teeth for two minutes, twice a day.
How many rotations does her electric toothbrush make in one week?

Answers

Answer:

Her electric toothbrush makes 210,000 rotations in one week

Step-by-step explanation:

Note that:

1 minute = 60 seconds1 week= 7 days

∵ Gerry brushes her teeth for two minutes, twice a day

→ Twice means times 2

∴ Gerry brushes her teeth for 2 × 2 = 4 minutes a day

∵ Gerry's electric toothbrush rotates the brush 125 times per second

∵ 1 minute = 60 seconds

→ Multiply 125 by 60 to find the number of rotating in 1 minute

∴ Gerry's electric toothbrush rotates 125 × 60 = 7,500 in 1 minute

∵ Gerry brushes her teeth for 4 minutes a day

→ Multiply it by 4 to find the number of rotation in 1 day

∴ Gerry's electric toothbrush rotates 7,500 × 4 = 30,000 in 1 day

∵ 1 week = 7 days

→ Multiply the number of rotation in 1 day by 7 to find it in 1 week

∴ Gerry's electric toothbrush rotates 30,000 × 7 = 210,000 in 1 week

∴ Her electric toothbrush makes 210,000 rotations in one week

What is the equation of the line that passes
through the points (-7, -10) and (-6, -8)?

Answers

Pretty sure the equation is: y=2x+4

Which of the following inequalities matches the graph?

graph and answer choices in image

Answers

Given:

The graph of an inequality.

To find:

The inequality for the given graph.

Solution:

From the given graph it is clear that the related line is a vertical line parallel to the y-axis at a distance of 7 units from the left of y-axis. It intersect the x-axis at x=-7.

So, the related equation for boundary line is

[tex]x=-7[/tex]

The shaded region is on the left side of the boundary line. it means, the value of x which are less than -7 are included in the solution set.

The boundary line is a solid line. It means -7 is also included in the solution set.

The value of x is less than or equal to -7. So, the inequality for shaded region is

[tex]x\leq -7[/tex]

Therefore, the correct option is B.

Parvinder wants to save $500 for a trip. Which inequality shows the least amount she must save each month for 6 months to accomplish this?

A 6x 500 B 6x > 500 C 6x => 500 D x => 500 + 6

Answers

Answer:

The correct answer is C. 6x = 500.

Step-by-step explanation:

In this expression, the "x" represents how many dollars he needs to save every month. Or in other words, the amount of money he earns a month multiplied by the amount of months should equal 500 in order for Parvinder to be able to go on his trip.

Therefore, the correct answer is C. 6x = 500.

Hope this helps! :D

What is 2x + 9 times 7x if x equals -75
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I am bo*red someone talk to me

Answers

Answer:

-4875

Step-by-step explanation:

and hello

what is 362,000 rounded to the nearest ten thousand

Answers

Answer:

360,000

Step-by-step explanation:

How many 5-digit numbers can you form using the digits 8 and 9?

Answers

Answer:

As repetition is not allowed,

For first digit selection, we have 8 choices.

for second digit selection 7 choices.

Similarly, 6 choices for 3rd digit, 5 choices for 4th digit and 4 choices for 5th digit.

Hence, total choices 8*7*6*5*4 = 6720

Step-by-step explanation:

find the answer- 8.19÷1.3​

Answers

Answer:

-6.3

Step-by-step explanation:

You can do it on calculator.

Please help me. I will fail...I will mark you brainiest.
The function [tex]f(x)=15(0.85)^x[/tex]models the height, in feet, of a bouncing ball after x seconds.

What is the initial height of the bouncing ball?

What is the percent rate of change?

What is the height of the bouncing ball after 5 seconds? Express your answers as a decimal rounded to the nearest hundredth.

Answers

Answer:

1) 17.6    2) 1760%     3) 12.6

Step-by-step explanation:

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The initial height of the bouncing ball is 15 feet, The percent rate of change is -15% and after 5 s, the height of the ball is 6.66 feet

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Given the function:

f(x) = 15(0.85)ˣ

a) The initial height of the bouncing ball is 15 feet

b) The percent rate of change = 0.85 - 1 = -0.15 = -15%

c) After 5 s, x = 5:

f(5) = 15(0.85)⁵ = 6.66 feet

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A shirt is originally $40, but today it is on sale for 35% off.
If sales tax is 8%, what is the total price for the shirt?

Answers

Answer:

$23.92

Step-by-step explanation:

35% of 40 is 14. 40-14=26. 8% of 26 is 2.08. 26-2.08=23.92

AD and BC are equal perpendiculars to a line segment AB [see fig 7.18] Show that CD bisects AB.

Answers

Answer:

because a=b and c=d so bisect


The base of an isosceles triangle is 4 units longer than the
sides. The perimeter of the triangle is 23.6 units. Which
system of equations can be used to find the length b of the
base and the length s of the sides?

Answers

Step-by-step explanation:

2s + b = 23.6

s + 4 = b

s = b - 4

2b - 8 + b = 23.6

3b = 31.6

b = 31.6 / 3 = 10.53333333(etc.) which is approx. 10.53

s = 6.53

Answer:

1gm = 1000mg so 0.1gm = 1000mg

first, convert the weight to kg

160lb * 1kg/2.2lb = 72.7kg

next, the dose

72.7kg * 100mg/kg = 7270mg

Step-by-step explanation:

The amount of time it takes a water pump to empty a tank varies directly as the capacity of the tank. If it takes a water pump 2.5 hours to empty a tank containing 60,000 gallons of water, how long does it take the same pump to empty a tank containing 108,000 gallons of water?

Answers

Answer: 4.5 hours

Step-by-step explanation: i used cross multiplication.

2.5/x=60,000/108,000

60,000x=270,000

divide 270,000 by 60,000

x=4.5

An equation is formed when two equal expressions. The time the same pump will take to empty a tank containing 108,000 gallons of water is 4.5 hours.

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

Given that the amount of time it takes a water pump to empty a tank varies directly with the capacity of the tank. Therefore, the relationship can be written as,

V ∝ T

V = kT

Substituting the volume and time in the equation,

60,000 gallons = 2.5 hours × k

Solving the equation for k,

k = 60,000 gallons / 2.5 hours

k = 24,000 gallons per hour

Now, the equation for the relationship can be written as,

V = 24,000 gallons per hour × T

Now, the time the same pump will take to empty a tank containing 108,000 gallons of water is,

V = 24,000 gallons per hour × T

108,000 gallons = 24,000 gallons per hour × T

108,000 gallons / 24,000 gallons per hour = T

T = 4.5 hours

Hence, the time the same pump will take to empty a tank containing 108,000 gallons of water is 4.5 hours.

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Which the following points is on the line whose equation is 2x - y = 3

a. (-1,-5)

b. (0,3)

c. (2,-1)

d. (3,2)

Answers

I believe the answer is: C. (2,-1)

I hope this helps!

One half the sum of two numbers equals their difference. What are the numbers if their sum is 56

Answers

Answer:

28

Step-by-step explanation:

Answer:

28

Step-by-step explanation:

(1/2)56 = a - b

28 = a - b

a + 28 = 56

a = 28

write the equation for this line in slope intercept form

Answers

Answer:

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

Step-by-step explanation:

Slope-intercept form is y = mx + b with m as the slope and b as the y-intercept.

The y-intercept is the point where the line intersects the y- axis.

y = mx + 2

The equation to find slope is [tex]\frac{y1-y2}{x1-x2}[/tex]       Two points from the line: (0,2) (4,8)

[tex]\frac{8-2}{4-0}[/tex] = [tex]\frac{6}{4}[/tex] = [tex]\frac{3}{2}[/tex]

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

Evaluate the expression below if x = 3 and y= -4.
X - Y - 3+ (-57)

Answers

Answer:

-53

Step-by-step explanation:

3-(-4)-3-57

7-3-57

4-57

=-53

Class A has 30 pupils and class B has 30 pupils.
Both classes sit the same maths test.
The mean score for class A is 55.
The mean score for class B is 65.
What is the mean score in the maths test across both classes?

Answers

Answer:

30

Step-by-step explanation:

b/c mean is average by another word

55 + 65 = 120

120\2 = 60

Find the indicated sum.
10
∑ (2j+8)
j=1

Answers

Answer: 190

Split the summation into smaller summations that fit the summation rules

10∑ j=1 (2j+8) = 2 10∑ j=1 (j) + 10 ∑ j=1 (8)

Firstly Evaluate

10

2 ∑ j=1 j

The formula for the summation of a polynomial with degree one is:

n∑ k=1  k =n (n+1) / 2

putting the values

2∑ j=1 j = (2)* 10 * (10+1) / 2

             = 110…………………..(1)

second Evaluate :

10 ∑ j=1 (8)

The formula for the summation of a constant is:

N  ∑ k=1 c  =  cn

Putting the values

10 ∑ j=1 (8) = 8 * 10

                   = 80……………….(2)

Adding both (1) and (2)

110+80

190

6(5g-7h+4)
6(5g−7h+4)

Answers

Answer:

Step-by-step explanation:

30g-42h+24

30g-42h+24

A sloth travels about 7 feet every minute. Generate the set of ordered pairs for the ratio relationship between the total distance traveled y and the number of minutes x for a total of 1, 2, 3, and 4 minutes.



(1,
), (2,
), (3,
), (4,
)

Part B

Answers

the 4 ordered pairs for the given proportional relation are (1, 7), (2, 14), (3, 21), (4, 28).

How to find the set of ordered pairs?

Here we know that the sloth travels about 7 feet every minute, then we can define the speed as:

S = 7 ft/min

Now remember the relation:

distance = speed*time

Then the proportional relation is:

D = 7*t

The ordered pairs are of the form (t, D)

if t = 1.

D = 7*1 = 7

if t = 2

D = 7*2 = 14

if t = 3

D = 7*3 = 21

if t = 4

D = 7*4 = 28

Then the 4 ordered pairs are (1, 7), (2, 14), (3, 21), (4, 28).

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Which ordered pair is a solution of the equation y=5x? (-2, 10) (-5, 25) (-3, 15) (-2, 10)

Answers

One of the solutions of the given equation y = 5x is (2,10)

The solution of an equation means if we substitute the value of this solution into the equation, it will produce the correct equality from the left side to the right side.

If the solution has 2 variables, for example x and y, and the solution is (a,b) means that if we replace x with a and y with b, the equality is correct.

The given equation is: y = 5x

For option (-2,10), substitute x = -2 and y = 10 into the equation:

10 = 5 . (-2)

10 = -10 (False)

Hence (-2,10) is not a solution.

For option (-5, 25), substitute x = -5 and y = 25 into the equation:

25 = 5 . (-5)

25 = -25 (False)

Hence (-5, 25) is not a solution.

For option (-3, 15), substitute x = -3 and y = 15 into the equation:

15 = 5 . (-3)

15 = -15 (False)

Hence (-3, 15) is not a solution.

There is no options in the problem that gives the correct equality. Looks like there is a typo.

Example of a solution of the given equation is (2,10), since if we substitute x = 2 and y = 10 into the equation:

10 = 5 . (2)

10 = 10 (True)

Hence (2, 10) is a solution.

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