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4 years ago

Need help again just on number 3

Mathematics

2 answers:

Lyrx [107]4 years ago

6 0

Hey!

B. 12 inches, 1 foot = 216 inches, 18 feet.

C. $39,000, 1 year = 117,000

D. 18 pencils, 1 box = 108 pencils, 6 boxes.

E. $40, 15 gallons = Not sure.

F. 1,200 boxes, 9 truckloads = Not sure.

G. 280 beats, 4 seconds = 70 beats, 1 second.

H. 520 cm, 5.2 m = 260 cm, 2.6 m.

(If I understood this correctly then those are the correct answers).

Furkat [3]4 years ago

3 0

Im going to start with my example for a. So you have to figure out how you can get to 8 from 2. So that would be 2*4=8. And whatever you do to the top, you must also do to the bottom. So for the top we multiplied by 4, so we also have to multiply the bottom by 4. So that would be 26*4=104. So your total/answer would be 8 teachers= 104 students. In another way, for f. it would be the same but you have to divide instead since 9 is bigger than 3. Hope this helped ! :)

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25 point to who gets these problems plus thank

otez555 [7]

Cameron's current service charge of $0.95 per song, and the new service charge of $0.89 per song and $12 fee for joining, gives;

Formula for finding the number of songs that makes the cost of both services the same is; 0.95•s = 12 + 0.89•s

Computing the value of <em>s </em>that satisfies the above equation gives the number of songs at which the cost of both service is the same as 200 songs

The interpretation is the the cost of either service is the same when 200 songs are downloaded

<h3>How can the equation that gives the required number of songs be found?</h3>

To Formulate

The charges for songs on the current music service is, C1 = 0.95•s

The charges for the new download service is, C2 = 12 + 0.89•s

Where the $12 is the joining fee

When the cost is the same for both service, we have;

C1 = C2

Which gives;

0.95•s = 12 + 0.89•s

The equation to represent when the cost for both service is the same is therefore;

0.95•s = 12 + 0.89•s

Computing;

The number of songs that gives the same costs is therefore;

0.95•s = 12 + 0.89•s

12 = 0.95•s - 0.89•s = 0.06•s

s = 12 ÷ 0.06 = 200

The number of songs at which the cost of each option will be the same is <em>s </em>= 200 songs

Interpreting the solution;

The interpretation is, the cost of songs downloaded on both service will be the same, when 200 songs are downloaded.

Learn more about writing formulas here:

brainly.com/question/26666091

#SPJ1

5 0

2 years ago

Please help me I don’t understand how to do it. If you can please use a data table to explain how to do it.

Ksivusya [100]

Answer:

The 70% mixture makes up 0.7 liters of the solution whereas the 60% mixture makes up 2.8 liters of the solution.

Step-by-step explanation:

Let us have x liters of the .7 mixture and y liters of the .6 mixture.

We want total liters to be 3.5 which means we need x+y=3.5 . I don't like the decimal in the equation so I'm going to multiply both sides by 10: 10x+10y=35

We also need the .7x+.6y=.62(3.5) . I hate the decimal business going on in this question so I'm going to multiply by 1000 which gives 700x+600y=62(35) .

So we have the system

700x+600y=62(35)

10x+10y=35

I'm going to setup this up for linear combination/elimination.

Multiply bottom equation by 60.

700x+600y=62(35)

600x+600y=60(35)

Subtract equations (bottom from top):

(700-600)x+(600-600)y=35(62-60)

Simplify:

100x+0y=35(2)

100x=70

Divide both sides by 100:

x=70/100

x=7/10

Going back to x+y=3.5 along with x=7/10 or .7 liters to find y.

y=3.5-x with x=.7

y=3.5-0.7

y=2.8

The 70% mixture makes up 0.7 liters of the solution whereas the 60% mixture makes up 2.8 liters of the solution.

Pic added.

Another way to do problem:

.7x+.6(3.5-x)=.62(3.5)

Multiply and distribute:

.7x+2.1-.6x=2.17

Combine like terms on left:

.1x+2.1=2.17

Subtract 2.1 on both sides:

.1x=.07

Multiply both sides by 10:

x=0.7 liters

Now the other acid solution is 3.5-0.7 which is 2.8 litera.

4 0

3 years ago

Q2) The isoscsles right triangle has 2 of it’s sides 10,10 it’s area is

nydimaria [60]

Answer:

Step-by-step explanation:

side a = 10

Area of isosceles triangle = $\frac{\sqrt{3}a^{2}}{4}\\\\$

= $\frac{\sqrt{3}*10*10}{4}\\\\=\sqrt{3}*5*5\\\\=25\sqrt{3}\\\\=25*1.732$

= 43.3 square units

3 0

3 years ago

Is he correct and show work please

mario62 [17]

9514 1404 393

Answer:

yes

Step-by-step explanation:

f(0) = -3 +0.5×0 = -3

f(1) = -3 +0.5×1 = -2.5 = f(0) +0.5

Two linear functions are the same if they agree at two points. Here, f(0) and f(1) are the same for both forms of the function, so these different forms represent the same relation.

Diego is correct.

5 0

3 years ago

I need help guys now na po

Phoenix [80]

Answer:

Ano grade na po ba kayo di ko po kasi nakita yan ehhhh

4 0

3 years ago