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3 years ago

3/7+a=4/7 i dont know what a is

Mathematics

2 answers:

swat323 years ago

8 0

A =1/7... since they both have a denominator of 7, u can just subtract 3 from 4 and get 1 sorry if that's confusing

Yanka [14]3 years ago

3 0

For this question.

A = 1/7

Comment if you would like me to show my work :)

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What is the mode of the data set 7, 8, 2, 3, 9, 3, 7.<br><br> A: 2<br> B: 9<br> C: 3 and 7 <br> D: 3

Delvig [45]

Step-by-step explanation:

✰ $\underline{ \underline{ \large{ \tt{G \: I \: V \: E \: N\: D\: A\: T \: A : }}}}$

7 , 8 , 2 , 3 , 9 , 3 , 7

Here ,

Frequency of 7 = 2
Frequency of 8 = 1
Frequency of 2 = 1
Frequency of 3 = 2
Frequency of 9 = 2

➺ 7 and 3 has the highest frequency i.e 2. So , Mode of the given data is 3 & 7 .

$\boxed{ \boxed{ \tt{Our \: Final \: Answer : \boxed{\tt{3 \: and \: 7}}}}}$

Hope I helped ! ♡

Have a wonderful day / night ! ツ

☞ $\underbrace{ \mathfrak{Carry \: On \: Learning}}$ !! ✎

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5 0

3 years ago

Determine if the triangles, VWZ and VXY, are similar. If so, identify the similarity criterion.

jenyasd209 [6]

Answer:

The triangles Δ VWZ and Δ VXY are similar by AA criteria.

Step-by-step explanation:

See the attached diagram.

Here, VZ = 16 in and ZY = 8 in. Again, VW = 18 in and WX = 9 in.

Therefore, $\frac{VZ}{ZY} = \frac{VW}{WX} = \frac{2}{1} = 2$

So, line WZ divides the lines VY and VX in the same ratio 2 : 1.

So, Line WZ ║ Line XY

Hence, ∠ XYV = ∠ WZV {The corresponding angles as VY is a transverse}

Again, ∠ YXV = ∠ ZWV {The corresponding angles as VX is a transverse}

Therefore, the triangles Δ VWZ and Δ VXY are similar by Angle-Angle i.e. AA criteria. (Answer)

5 0

3 years ago

If tommy rode his bike 4.3 miles a day, 3 days a week for 5 years delivering news papers and he dropped 22.7 newspapers every 1/

geniusboy [140]

Answer:

277 848 newspapers.

Step-by-step explanation:

Find out how much newspaper he drops for 4.3 miles.

1/4 = 0.25

4.3 miles ÷ 0.25 = 17.2

= 17

17 x 22.7 = 385.9

(Newspapers be dropped a day)

1 week of dropping newspapers = 385.9 x 3 = 1157.7

1 month of dropping newspapers = 1157.7 x 4 =

4630.8

1 year = 12 months

5 years = 12 x 5 = 60 months.

5 years/60 months of dropping newspapers = 4630.8 x 60 = 277 848

Tommy dropped 277 848 newspapers.

6 0

3 years ago

BUILD PERSEVERANCE The formula A = P(1 + r) represents the amount of money A in an account after t years, where P is the amount

Veseljchak [2.6K]

The solution for P is P = A / (1 + r)^t, the initial deposit is $1,510, and I agree that A is always greater than P when given the conditions stated.

<h3>How do we calculate the initial deposit?</h3>

The correct formula in the question is provided as follows:

A = P(1 + r)^t ........................ (1)

a. P can be solved for and the amount of Patricia's initial deposit can be found from equation (1) as follows:

P = A / (1 + r)^t ................................. (2)

Where:

A = $1839.79

r = 2.5% = 0.025

t = 8

Substituting all the relevant values into equation (2), we have:

P = $1839.79 / (1 + 0.025)^8

P = $1,510

b. Yes, I agree.

The reason is that interest at the rate of 2.5% will be earned yearly on P and added to A making A always greater than P.

Learn more about initial deposits here: brainly.com/question/21845455.

#SPJ1

8 0

2 years ago

Sarah wants to arrive at her friend's wedding at 3:00. The distance from Sarah's house to the wedding is 97 miles. Based on usua

atroni [7]

Answer:

First, you need to remember the relation:

speed = distance/time

We know that she needs to arrive at her friend's wedding at 3:00.

We also know that the total distance between her house and the wedding is 97 miles.

Now we need to find the total time that she needs to arrive at the wedding, so we can estimate at which hour she needs to start the travel.

The first 20 miles are driven att 30 miles per hour.

Then:

distance = 20mi

speed = 30mi/h

30mi/h = 20mi/T

T = 20mi/(30mi/h) = 0.67 hours.

The next 12 miles are driven at 45 mi/h

then:

45mi/h = 12mi/T

T = (12mi/(45mi/h)) = 0.27 hours

And the remainder distance is traveled at 65 mi/h

First, at this point she did travel 20mi + 12mi = 32mi

And we know that the total distance was 97mi, then the remaining distance is:

97mi - 32mi = 65mi

Then now she travels 65 miles at the speed of 65mi/h

then:

65mi/h = 65mi/(T)

T = (65mi)/(65mi/h) = 1 hour

Then the total time needed for the travel is:

Time = 0.67 hours + 0.27 hours + 1 hour = 1.94 hours.

knowing that 1 hour = 60 min

0.94 hours = 0.94*(60 min) = 56.4 min

time = 1 hour and 56.4 min

Meaning that she needs to leave her house around two hours before 3:00

So she would need to leave her house at around 1:03

8 0

3 years ago