Solve: 4/7 - (-4/7)

Answers

Answer 1

Answer:

1 1/7

Step-by-step explanation:

Subtracting a negative is adding

4/7 +4/7

8/7

Changing to a mixed number

1 1/7


Related Questions

Can someone help me again on this.

Answers

60 first 20 second 15 third 10 fourth nothing fifth

If a person's eye level is h meters above sea level and he can see d kilometers to the horizon, then d=3.57h. Suppose the person's eye level is 15.21 meters

above sea level. How far can he see to the horizon?

Round your answer to the nearest tenth.

Answers

Answer:

54.3m

Step-by-step explanation:

h = distance above sea level

d = distance he can sea above sea level

d = 3.57h

h = 15.21m

d = ?

d = 3.57 × 15.21

d = 54.2997m approximately 54.3m

The person can see up to a distance of 54.3m

Answer:

d = 7.5

Step-by-step explanation:

d = 3.57[tex]\sqrt{h}[/tex]

= 3.57[tex]\sqrt{4.41}[/tex]

= 3.57( 2.1)

= 7.497

d = 7.5!

The equation for the graph obtained when the graph of y= 1/x is compressed vertically by a factor of 0.25, translated 4 units right and then translated 3 units up

Answers

Answer:

y= (0.25)1/x-4 +3

Step-by-step explanation:

You just multiply the compression by mx. then you would add the translation (-4 since it goes to the right). and +3 since it moves up on the y axis

If a vertical plane sliced a sphere, what would be the 2-D cross section?


square


rectangle


circle


triangle

Answers

Answer:
Circle
Explanation:
Because if you cut a circle I’m half anywhere it will be a circle because it’s round everywhere.

The teacher concluded that there is a correlation between having a computer and having a phone. Do you agree with the teacher? Explain your thinking. (giving brainliest to fastest response)

Answers

Answer:

yes I agree with teacher

Step-by-step explanation:

I I think this because 1 people that have a phone and a computer are the highest group and two becauseit seems that most of the class has a phone it also seems that most of the class has a computer

Find the indicated side of the right triangle

Answers

Answer:

x = 14

Step-by-step explanation:

[tex] \sin \: 30 \degree = \frac{7}{x} \\ \frac{1}{2 } = \frac{7}{x} \\ x = 7 \times 2\\ x=14[/tex]

please answer quickly!

Answers

Answer:

1) 3 and 4

2) B

Step-by-step explanation:

sorry if i am wrong

1. 3 and 4
2. B) two sides of equal length

Candice wants to estimate the proportion of the freshmen at her high school that likes sports drinks. She interviews a simple random sample of 75 of the 215 freshmen on campus. She finds that 18 students like sports drinks. Is the Normal condition for finding confidence intervals met? Explain.

Answers

Yes, the Normal condition for finding confidence intervals is met because np = 18 and n(1 − p) = 57, both of which are greater than 10.

The following information should be considered:

Since there is the simple random sample of 75 of the 215 freshmen on campus. She finds that 18 students like sports drinks.So, it is the normal condition as np = 18 and n (1- p) = 57.

Learn more: https://brainly.com/question/1504221?referrer=searchResults

The Normal condition for constructing confidence intervals is met if both np and n(1-p) are greater than 10. In Candice's case, both conditions are met, so she can proceed with constructing a confidence interval for the proportion of freshmen who like sports drinks.

In order to determine if the Normal condition for constructing confidence intervals is met, we need to check if both np and [tex]\( n(1-p)[/tex] are greater than 10. Here n is the sample size and p is the sample proportion.

For Candice's sample:

n = 75 (sample size)p (sample proportion) = [tex]\frac{18}{75} = 0.24[/tex]

Now, calculate np and n(1-p):

[tex]\[ np = 75 \times 0.24 = 18 \][/tex][tex]\[ n(1-p) = 75 \times (1 - 0.24) = 75 \times 0.76 = 57 \][/tex]

Both values (18 and 57) are greater than 10, so the Normal condition is met. Therefore, it is appropriate to proceed with constructing a confidence interval for the proportion of freshmen who like sports drinks.

Find the equivalent expression 2^3

Answers

Answer:

8^1

Step-by-step explanation:

The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their
sum?
A) 5 squared
B) 8
C) 20
D) 6

Answers

The magnitude of their sum is 6 units

Resultant

The formula for calculating the resultant vector is given as:

[tex]V=\sqrt{(\sum V_x)^2+(\sum V_y)^2}[/tex]

From the given figure, the resultant is calculated as:

[tex]V=\sqrt{[(4cos45)+(2sin45)]^2+((4sin45)+2cos45)^2} \\V=\sqrt{[2\sqrt{2}+\sqrt{2}]^2 +[2\sqrt{2}+\sqrt{2}}]^2\\V=\sqrt{18+18} \\V= 6 units[/tex]

Hence the magnitude of their sum is 6 units

Learn more on resultant force here: https://brainly.com/question/25239010

What is the side length of a square with a perimeter of 80 meters?
The side length is
meters.

Answers

Answer:

20

Step-by-step explanation:

A square has four sides and if the perimeter is 80 then you divide the perimeter by four to find the length of each side

The rate of collection by a solar panel decreased steadily throughout the day due to increasing cloud cover until it reached a constant amount. Later in the day, there were two short periods where the Sun appeared, only for the cloud cover to return.
Which graph models the amount of energy collected depending on the time since the cloud cover began?

ANSWER: B

Answers

Answer:

Second graph

Step-by-step explanation:

In the second graph we can see how the rate of collection decreases steadily at 0 < x < 7.5; at x = 7.5 it becomes constant; and later in the day, there were two short periods (about x = 12.5 and x = 22.5) where the rate of collection has two peaks.

A passenger car travels 16 mph faster than the commuter bus. If the bus travels 56 miles in the same time it takes the car to travel 84 miles, what is the speed of each vehicle?

Answers

Answer:

speed of commuter bus: 32 km

speed of passenger car  : 48 mph

Step-by-step explanation:

We will use the concept of speed distance and time.

where time = distance / speed

____________________________________________________

Let the speed of commuter bus be x mph

Given that passenger car travels 16 mph faster than commuter bus.

Speed of passenger car if speed of commuter bus is x mph (x+16)mph

Distance traveled by commuter bus  = 56 miles

Time taken by commuter bus  to travel 56 miles = 56/X   (1)

Distance traveled by passenger car  = 84 miles

Time taken by passenger car to travel 84 miles = 84/(X+16)   (2)

__________________________________________

It is given that time taken by both bus and car is same

so equating equation  1 and 2

we have

56/X = 84/(X+16)   (by cross multiplication we have)

=> 56(X+16)  = 84*X

=> 56X + 896 = 84X

=> 896 = 84X - 56 X

=> 896 = 28X

=> X = 896/28 =  32.

Therefore , speed of commuter bus is x mph or 32 km

speed of passenger car  is x+16 mph = (32+16) mph = 48 mph

Final answer:

The passenger car travels at 48 mph, while the commuter bus travels at 32 mph, derived from the fact that they travel the same time but different distances.

Explanation:

To find the speeds of the passenger car and the commuter bus, we can use the formula for distance (distance = speed × time). Since both the bus and the car travel for the same amount of time, we can set up an equation to solve for their speeds based on the distances they travel.

Let x be the speed of the commuter bus in mph. Consequently, the speed of the passenger car would be x + 16 mph. According to the information given:

The bus travels 56 miles.

The car travels 84 miles.

Since they travel for the same time t, we have:

Bus: 56 miles = x × t

Car: 84 miles = (x + 16 mph) × t

Dividing the mileage of the car by the bus gives us:

[tex]\(\frac{84}{56} = \frac{(x + 16)t}{xt}\)[/tex]

[tex]\(1.5 = \frac{x + 16}{x}\)[/tex]

Multiplying by x to get rid of the fraction and then solving for x provides:

1.5x = x + 16

0.5x = 16

x = 32 mph

This means the bus travels at 32 mph and the passenger car travels at:

32 mph + 16 mph = 48 mph

Therefore, the speed of the passenger car is 48 mph and the speed of the commuter bus is 32 mph.

Mr.Prieto wants to buy pizza that costs $14 each and 5 sodas for $2 each. He has $94. Write and solve an equation to find out how many pizzas he can buy.

Answers

Answer:

Mr. Prieto can buy 6 pizzas

Step-by-step explanation:

Cost of 5 soda's = 5 * 2  = $ 10

Remaining amount with him after buying 5 soda's= 94 - 10 = $ 84

Number of pizza's = Remaining amount/cost of 1 pizza

[tex]=\frac{84}{14}[/tex]

=  6 pizzas

Answer:

he can buy 6 pizzas

Step-by-step explanation:

5 x 2 = 10

94-10 = 84

84 divided by 14 = 6

he can buy 6 pizzas.

Calculate the inverse of the matrix and find the values for a, b, c, and d [4,12,1,10] A^1=[a/14,b/7,c/28,d/7]

Answers

Answer:

a: 5

b: -3

c: -1

d: 1

Step-by-step explanation:

Given the matrix:

A = [4   12

       1   10]

its determinant is: 4*10 - 1*12 = 28

the inverse of A is:

1/28*[10  -12

        -1    4]    

[10/28  -12/28

-1/28    4/28]    

A^-1 = [5/14  -3/7

          -1/28  1/7]

a: 5

b: -3

c: -1

d: 1

The calculation is as follows:

Given the matrix:

A = [4   12

      1   10]

its determinant is: 4(10) - 1(12) = 28

Now

the inverse of A is:

1 ÷ 28 × [10  -12

       -1    4]    

[10 ÷ 28  -12 ÷ 28

-1 ÷ 28    4 ÷ 28]    

A^-1 = [5÷  14  -3 ÷ 7

         -1÷  28  1 ÷  7]

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The radius of a circle is 13 feet. What is the length of an arc that subtends an angle of
radians?
13 ft
Give the exact answer in simplest form.
feet

Answers

Answer:

The length of the arc is 221π/18 ft or 38.55 ft

Step-by-step explanation:

Given

Subtended angle, θ = 17π/18

Radius, r = 13 ft

Required

Length of the arc.

When an angle is given in radians, the length of the arc is calculated using the formula below

Length = rθ

By substituting

Length = 13 * 17π/18

Length = 221π/18

The answer can be left in this form.

But for simplification purpose, I'll solve further.

Taking π as 3.14

Length = 221 * 3.14/18

Length = 693.94/18

Length = 38.552222

Length = 38.55 ft (Approximated).

Hence, the length of the arc is 221π/18 ft or 38.55 ft

HELP YOU WILL GET BRAINLIST

Answers

Answer:

it is the blue box (not teal)

64 x 7/4 is less than 64 because 7/4 > 1

Hope this helps :)

???? ???? ???? Help me

Answers

Answer:

B) x = 1/4y²

Step-by-step explanation:

I graphed x = 1/4y² below and it matched the graph that you gave.

the answer is B). hoped this helped :)

I WILL GIVE BRAINLIEST
Solve the equation:
5x + 65 = 25
What is the value of x

Answers

Answer: -8

Step-by-step explanation:

Answer:

x = -8

Step-by-step explanation:

If you multiply -8 by 5 you get -40. Then if you add 65 to -40 you get 25.

Hope this helps.

Need help please one this one

Answers

Answer: each triangle is 1/3 of the whole

Step-by-step explanation: If you add an upside down triangle to the two triangles below you would get the whole.

three triangles make that whole so one third of the whole is only one of the triangles.

(hope this helps)

What is the value of x?
(Srº

Answers

The value of x of the missing angles is: 45

How to find the missing angle?

A linear pair of angles is a pair of adjacent angles formed when two lines intersect. The two angles of a linear pair are always supplementary, which means their measures add up to 180 degrees.

Some properties of linear pairs of angles include:

The angles in a linear pair are adjacent.

Their non-common arms are opposite rays and form a straight line.

They together form a straight angle.

Two angles forming a linear pair have a common vertex and a common arm. Their non-common sides are opposite rays that form a line.

Thus:

3x + x = 180

4x = 180

x = 180/4

x = 45

The solution to an inequality is 5 ≤ = x < 9 What is the smallest value of x that will make the original inequality true? ___________.

Answers

Answer:

5 is indeed correct

Step-by-step explanation:

The smallest value of x will be 5 that will make the original inequality true.

What is Inequality?

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The solution to an inequality is,

⇒ 5 ≤ x < 9.

Now,

Since, The solution to an inequality is,

⇒ 5 ≤ x < 9.

Hence, The value of x = { 5, 6, 7, 8 }

Thus, The smallest value of x = 5

Therefore, The smallest value of x will be 5 that will make the original inequality true.

Learn more about the inequality visit:

https://brainly.com/question/25275758

#SPJ5

In a standard 52−card deck, half of the cards are red and half are black. The 52 cards are divided evenly into 4 suits: spades, hearts, diamonds, and clubs. Each suit has three face cards (jack, queen, king), and an ace. Each suit also has 9 cards numbered from 2 to 10.



Dawn draws 1 card, replaces it, and draws another card. Is it more likely that she draws 2 black cards or 2 face cards?



It is more likely that she draws 2


cards.

Answers

Answer:

more likely she draws 2 face cards

Step-by-step explanation:

there is a 50% chance of drawing a black card because there are 26/52 black cards but there aee only 12/52 face cards

A box contains 12 slips of paper as shown. Each slip of paper is equally likely to be drawn.

Find P(red).

Answers

Answer:

6

Step-by-step explanation:

Answer:

6 red 2 yellow 3 blue so the answer is 6

Step-by-step explanation:

How much change will you get back from a quarter if you buy 2 ten-cent candies?
A. 1 dime
B. 1 nickel and 2 pennies
C. 2 dimes
D. 2 nickels
E, 1 nickel

Answers

Answer:

E. 1 nickel

Step-by-step explanation:

2 ten cent= 20 cent

a quarter is 25 cent

25-20=5

a nickel is 5 cent

Answer:

E.) nickle (5 cents)

Step-by-step explanation:

You give 25 cents (value of a quarter)

2 ten-cent candies is equal to 20 cents:

[tex]2*10=20\\10+10=20[/tex]

Find the difference between what you paid and the actual amount:

[tex]25-20=5[/tex]

You paid an extra 5 cents. Find the answer that has the same value as 5 cents:

A. ) 1 dime

This is wrong because a dime is worth 10 cents, not 5

B.) 1 nickel 2 pennies

this is wrong because a nickle is worth 5 cents and a penny is worthy 1 cent. Add the values, and the change would be 7 cents.

C.) 2 dimes

This is wrong because a dime is worth 10 cents, so 2 dimes would be 20 cents.

D.) 2 nickles

This is wrong because a nickle is worth 5 cents, so 2 nickles would be 10 cents.

E.) 1 nickle

This is correct because a nickle is worth 5 cents, the exact change you should receive.

:Done

A rectangle has a height of 5 and a width of 4x^2-2x-6 . Express the area of the entire rectangle.

Answers

Answer:

20x² - 10x - 30

Step-by-step explanation:

Height = 5

Width = 4x² - 2x - 6

Area of rectangle = length × breadth

Area of triangle = height × width

Area = 5 × (4x² - 2x - 6)

Area = 20x² - 10x - 30

Area of the rectangle is 20x² - 10x - 30

if someone was born in 2018 September 12th how old will they be in 2082?

Answers

Answer: 64 years old

Step-by-step explanation:You subtract 2082 by 2018 to get the sum of 64

Answer:

64/63

Step-by-step explanation:

It depends on what day it is in 2082 however the calculation should be simple...

2082-2018=64

If it is before September 12th in 2082, then they would be 63 because their 64th birthday would be on September 12th!

Hope this helps!

The graph of g(x) = (x + 2)2 is a translation of the
graph of f(x)
by
units.
DONE
X
-2
2
4
2
h = 1
y = (2-1)

Answers

Answer:

The graph of g(x) = (x + 2)2 is a translation of the

graph of f(x) ✔ left by 2 units.

The graph of h(x) = (x − 3)2 is a translation of the

graph of f(x) ✔ right by 3 units.

100% Correct

Step-by-step explanation:

How would you describe "plate motion" to someone else? (In other words, how
do plates move?) *
Will mark as Brainliest plz help

Answers

Plates at our planet's surface move because of the intense heat in the Earth's core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.

The shapes of the horizontal cross-sections of the cylinder below are not all congruent True or false

Answers

Answer:

False

Step-by-step explanation:

Please have a look at the attached photo

As we know the shapes of the horizontal cross-sections of the cylinder  are circles congruent with the circle at the base and at the top of the cylinder because they are parallel to each other.

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