Mathematics College

solve 4/7- (-4/7)
A. 8/7
B.-8/7
C.-4/7
D.4/7​

Answers

Answer 1

Answer:

A. 8/7

Step-by-step explanation:

Step 1    

4/7 - (-4/7) --> 4/7 + 4/7

The two minutes turn into a plus, removing the bracket.

Step 2

4/7 + 4/7 = 8/7

Add the two fractions together.

Answer 2

Answer:

A. 8/7

Step-by-step explanation:

Related Questions


WHICH SERIES OF TRANSFORMATIONS CAN BE USED TO SHOW THAT ABC~DEF?

Answers

Answer:

A) is correct

Step-by-step explanation:

Suppose your friends have the following ice cream preferences: 31% of your friends like chocolate (C). The remaining do not like chocolate. 15% of your friends like sprinkles (S) topping. The remaining do not like sprinkles. 5% of your friends like Chocolate (C) and also like sprinkles (S). Of the friends who like sprinkles, what proportion of this group likes chocolate

Answers

Answer:

0.3333 = 33.33% of this group likes chocolate

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which

P(B|A) is the probability of event B happening, given that A happened.

[tex]P(A \cap B)[/tex] is the probability of both A and B happening.

P(A) is the probability of A happening.

Of the friends who like sprinkles, what proportion of this group likes chocolate:

So,

Event A: Likes sprinkles

Event B: Likes chocolate

15% of your friends like sprinkles (S) topping.

This means that [tex]P(A) = 0.15[/tex]

5% of your friends like Chocolate (C) and also like sprinkles (S).

This means that [tex]P(A \cap B) = 0.05[/tex]

So

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.15} = 0.3333[/tex]

0.3333 = 33.33% of this group likes chocolate

I have to turn this in today!!! Please help me ASAP!

Answers

Answer:

D. 9/5

Step-by-step explanation:

27:15= 9:5

18:10= 9:5

Answer:

D) [tex]\frac{9}{5}[/tex]

Step-by-step explanation:

The scale factor between the shapes is 1.8 or 9/5 as a fraction.

Hope it helps!

Divide the complex numbers and express answer in the form (a+bi)

3-4i/8+2i

Answers

Answer:

[tex]\frac{4}{17}-\frac{19}{34}i[/tex]

Step-by-step explanation:

1. Approach

To divide complex numbers, first one must set the problem up as a fraction. The one will multiply the fraction by the complex conjugate. A complex conjugate is a complex number with the imaginary part multiplied by negative one. Since a number over itself equals one, this will ensure that the expression remains true. When one multiplies by the complex conjugate, the difference of squares property complex into play, therefore the denominator simplifies down to a real number (remember one can simplify the powers of (i)). Now all one has to do is divide each element in the complex number in the numerator by the real number in the denominator. If it does not divide evenly, one can just simply the fraction.

2. Solving

Set up as a fraction

[tex]\frac{3-4i}{8+2i}[/tex]

Multiply by the complex conjugate

[tex]\frac{3-4i}{8+2i}*\frac{8-2i}{8-2i}[/tex]

Simplify

[tex]\frac{(3-4i)(8-2i)}{(8+2i)(8-2i)}[/tex]

[tex]\frac{24-6i-32i+8i^{2}}{64-4i^{2}}[/tex]

[tex]\frac{24-6i-32i-8}{64-4(-1)}[/tex]

[tex]\frac{16-38i}{64+4}[/tex]

[tex]\frac{16-38i}{68}[/tex]

[tex]\frac{8-19i}{34}[/tex]

Plz guys help me plz

Answers

Answer:

The answer is A!

Step-by-step explanation:

Its correct, I took the quiz :)

Please help this is due today!

Calculate the unknown missing angle measures.

Do not answer this with one answer ,blank, or a ridiculous answer.... this is serious please.

Answers

Answer:

For ABC A= (-3,3) B= (0.2) and C= (-3,1)

For DFE D= (0,6) F= (2,6) and E= (2,3)

Step-by-step explanation:

I believe tha name of a sequence of transformation will be translation and the Reflection

Hope this Helped

1. A square is altered so that one dimension is
increased by 7 meters and the other dimension
is increased by 4 meters. If the area of the
resulting rectangle is 108 square meters, find the
area of the original square.

Answers

The dimension of a square is altered so that one dimension Is increased by 7 feet While the other is decreased by 2 feet The area of the resulting rectangleIs 90 feet with a 2 up top what is the original squareArea of the square I will tell you the answer right now it is going to beA= 64 feet with the two up top

Two less than three times a number

Answers

Answer:

3x-2

Step-by-step explanation:

3 times a number is 3x, if we use x as the number

Two less than (3x) is 3x - 2

cuál es el número entero de 2° bajo Cero​

Answers

Answer:

 -2 °C.

Step-by-step explanation:

Usa el signo + para representar temperaturas arriba de cero y el signo – para representar temperaturas bajo cero.

It takes Steven 12.25 minutes to run 1.4 miles. At this rate. how long will it take him to run 2.6 miles?

Answers

It’s = 22.75
What I did was
12.25 divided by 1.4 =8.75
Then
8.75*2.6=22.75

The speed is the distance covered by an object at a particular time. The time it will take for Steven to cover a distance of 2.6 miles is 22.75 minutes.

What is speed?

The speed is the distance covered by an object at a particular time. Therefore, it is the ratio of distance and time.

Speed = Distance / Time

Given that it takes Steven 12.25 minutes to run 1.4 miles. Therefore, the rate or speed at which Steven runs is,

Speed = Distance / Time

Speed of Steve = 1.4 miles / 12.25 minutes

Now, if at the same rate Steven runs, then the time it will take for Steven to run a distance of 2.6 miles is,

Speed = Distance / Time

Time = Distance / Speed

Time = 2.6 miles / (1.4 miles / 12.25 minutes)

Time = (2.6 miles × 12.25 minutes)/1.4 miles

Time = 22.75 minutes

Hence, the time it will take for Steven to cover a distance of 2.6 miles is 22.75 minutes.

Learn more about Speed here:

https://brainly.com/question/15100898

#SPJ2

Simplify -12+8+5+(-9)​

Answers

FIRST Remove parentheses.
−12+8+5-9

Simplify -12+8 to -4

-4 + 5 — 9

Simplify
−4 + 5 −4+5 to 1
1 — 9

Simplify

-8 is your answer

Answer:

The answers is -8

Step-by-step explanation:

Remove parentheses.

-12 + 8 + 5 - 9

Add -12 and 8

-4 + 5 -9

Add -4 and 5

1 - 9

Subtract 9 from 1

-8

The answers is -8

Hope this helps

Beth’s brother is 140% of Beth’s height. If Beth’s brother measures 140cm, how tall is Beth?

Answers

Answer:

100 cm

Step-by-step explanation:

let x be the height of Beth

and y be the height of Beth's Brother

By 1st Condition

y = 140% * x

y = (140/100) * x

y = 1.4 x ..........................(Eq 1)

By 2nd Condition

y = 140

Put the value of y in the equation 1

140 = 1.4 *x

x = 140 / 1.4

x = 100 cm

EASY MATH QUESTION Urgent pls​

Answers

Answer:

I don't know that is hard

Step-by-step explanation:

You said this was an easy math question.

Answer:

I think it's b

Step-by-step explanation:

ah=b1+b2/2

h=ax(b1+b2)/2

1) Dan ate 1/12 of a pumpkin, while Sandy ate 1/2 of a pumpkin. In total, how much pumpkin did these two eat?

Answers

Answer:

1 pumpkin

Step-by-step explanation:

1/2 + 1/2 is 1. They ate 1 pumpkin in total.

1 pumpkin
1/2+1/2( half + half)=1

What is the volume?
7 mm
7 mm
1 mm

Answers

Answer:

(7)(7)(1)=49 mm^3

Step-by-step explanation:

Answer:

49mm³

Step-by-step explanation:

[tex]v = 7mm \times 7mm \times 1mm = 49m {m}^{3} [/tex]

11z > -33 help please

Answers

11z > -33

11z / 11 > 33 / 11

z > 3

Hope it helps!

Me pueden ayudar con la F porfa :)​

Answers

Answer: -66

Step-by-step explanation:

[tex](2)-(-3)(-20)-(-8)[/tex]

multiply first {*}

[tex](2)-(60)-(-8)[/tex]

then open parenthesis {()}

[tex]2-60+8[/tex]

then add/subtract {+/-}

[tex]2-60+8=\\2-68=\\-66[/tex]

Sorry that it isn't in Spanish ;-;

Answer:

f. = -50

Step:

(2) - (-3) (-20) - (-8)

2-(-3) (-20)= -58

-58+8

= -50

Write a second inequality with the same meaning -12<= a

Answers

Answer:

a[tex]\geq[/tex]-12 or -48[tex]\leq[/tex]4a

Step-by-step explanation:

Find the Area of the triangle

6.3 yd
3.4 yd

​

Answers

Area of a triangle is... 1/2 Base x Height The answer is followed by units squared.
3.15 is half of 6.3.
3.15 x 3.4 = 10.71 yds squared

What is the sum of the polynomials? (6x+7x+x^2)+(2x^2-3x)

Answers

Answer:

3x^2 + 10x

Step-by-step explanation:

jfdxaMXDCJINCIZSCKZDXVSJOISACXKISZPIAnhCPKISZJCPKNSPKCN KPZSA

Answers

Answer:

Jassjsjdhjajjjjajajajajjjajajajajajqjqjjqjsjsjajajajajjajajaja

Ndoekekekenekekekekek

Which of the following is most likely the next step in the series ?​

Answers

Answer:

A

Step-by-step explanation:

The colour keeps switching from red to blue to red, and red was last in the series. Therefore, a blue pattern should be next in the series.

Each time, a new hand is added to the pattern. Therefore, we add a hand.

The answer is definitely A.

−4x+3y=2
3x−9y=3
​
yes or no


​

Answers

Answer:

NO

step by step

the answer is no

Find the value needed for the “?” to make the equation true.

d^?/d^11 = d^7

Answer: ? =__

Answers

Answer:

? = 18

Step-by-step explanation:

Answer:

? = 18

Step-by-step explanation:

d^?/d^11 = d^7

d^? = d^11*d^7

d^? = d^(11+7)

d^? = d^18

? = 18

( NEEDED ASAP! )
Capon City has 5 more than 3 times as many residents as Harbor City.

Create an algebraic expression to represent the number of residents in Capon City. Use r in your expression where r represents the number of residents in Harbor City

Answers

Answer:

y=3r+5

Step-by-step explanation:

Break up the sentance.

Capon city has 5 more than 3 times as many residents as harbor city.

The sentance above can be written like this: y=5+3x. Since they want r to represent the number of people in Harbor city, use r in place of x.

Capon city=y

has=equal sign

5 more=+5

3 times as many=3r

y=3r+5

Encuentre el resultado de la suma de las fracciones, simplifique la fraccion. 6/7+2/8=​

Answers

Answer:31/28

Step-by-step explanation:

Answer:

1 3/28

Step-by-step explanation:

Is collecting Taxes a

Delegated power
Reserved power
Concurrent power

Answers

Answer: C.concurrent power

Step-by-step explanation: Such powers are called concurrent powers. These include the power to tax, spend, and borrow money. State governments operate their own judicial systems, charter corporations, provide public education, and regulate property rights.

Please help answer !:)

( WILL GIVE BRAINLST)

Answers

i dont know that so u answer it

Which graph represents the solution to the compound inequality?

–6 < 3x – 12 ≤ 9

A number line with an open circle at 2 with a bold line pointing to the left. A point at 7 with a bold line pointing to the right.
A number line with an open circle at 2 with a bold line pointing to the right ending at the point at 7.
A number line with an open circle at negative 6 with a bold line pointing to the left. A point at 9 with a bold line pointing to the right.
A number line with an open circle at negative 6 with a bold line pointing to the right ending at the point at 9.

Answers

Answer:

B) The second one. A number line with an open circle at 2 with a bold line pointing to the right ending at the point at 7.

Step-by-step explanation:

B) The second one. A number line with an open circle at 2 with a bold line pointing to the right ending at the point at 7.

Answer:

B

Step-by-step explanation:

edge 2022

What are the prime numbers of 30

Answers

Answer:

2,3,5

Step-by-step explanation:

Answer:

2, 3 and 5 are the prime numbers

Step-by-step:

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