1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
djyliett [7]
4 years ago
12

Pls help i dont care how u do it jast pls help me

Mathematics
1 answer:
Airida [17]4 years ago
3 0

Answer:

1.  35 boys and 28 girls

2.  42 long-sleeved shirts

3.  40 total outfits

Step-by-step explanation:

1.

Ratio of Boys to Girls is 5 is to 4, that means that there are "5" parts boys and "4" parts girls. So that makes:

5 + 4 = 9 parts in total

Total there are 63 kids, so each part would be:

63/9 = 7 kids per part

Now,

5 part are boys so 5 * 7 = <u>35 boys</u>

and

4 parts are girls so 4 * 7 = <u>28 girls</u>

<u></u>

2.

Long Sleeved Shirts = 60% of the total

Total is 70

So, we basically need 60% of 70

First, we want to convert 60% to decimal. We divide by 100, that's it! So:

60/100 = 0.6

Now to get the number we simply multiply the decimal of 60% we got, which is 0.6 with the total, which is 70. Thus,

0.6 * 70 = 42

Thus, there are <u>42 long-sleeved shirts</u>

<u></u>

3.

Lily has 30 dress, WHICH ARE 75% of the total outfits she has.

First of all, what is 75% in decimal?

We divide by 100:

75/100 = 0.75

We can now write:

30 is 0.75 times the total

Right?

Which number's 75% (or 0.75) is 30? This is what we need to figure out!

0.75 * which number would give us 30?

We have to simply divide 30 with 0.75 to get total number of outfits:

30/0.75 = <u>40 total outfits</u>

You might be interested in
in a school containing 360 children, 198 are girls. What percent of the school are girls? What percent of the school are boys? H
almond37 [142]

Answer:

What percent of the school are girls? 55%

What percent of the school are boys? 45%

How many boys are there? 162

How many girls are there? 198

Step-by-step explanation:

The number of girls = 198

The percent of girls = 198/360 x 100% = 55%

The number of boys = 360-198 = 162.

The percent of boys = 162/360 x 100% = 45%.

5 0
3 years ago
Read 2 more answers
Graphing help please - fairly simple, image attached.
alisha [4.7K]
To figure out if a graph is a function, you can use this thing called the vertical line test. in case you're unfamiliar, it's basically where you just imagine a vertical line going from left to right on the graph. if it crosses the function in two places, it's incorrect. i suggest looking up a video that shows you a visual representation of the vertical line test if you've never heard of it; it's fairly simple.

A is a function because the graph passes the vertical line test. if you imagine a vertical line and drag it from left to right across the graph, the linear function graphed in choice A does not have two x values at the same spot.

B is not a function. it fails the vertical line test almost immediately: the sideways "U" shapes makes it intersect the vertical line twice in one place.

C is a function. it passes the vertical line test, even though it looks a little strange. at no point does it intersect the vertical line twice.

D is a function. again, it doesn't intersect the vertical line twice.

now, to determine if a function is a one-to-one function, it must also pass the horizontal line test. this means that it doesn't intersect at two points horizontally as well. test that out on choices A, C, and D.

A is a one-to-one function because it doesn't cross in the same place horizontally, either. C and D are one-to-one functions as well.
5 0
3 years ago
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th
Naddika [18.5K]

Answer:

The rocket will hit the ground after about 8.20 seconds.

Step-by-step explanation:

The height of the rocket <em>y</em>, in feet, <em>x</em> seconds after launch is modeled by the equation:

y=-16x^2+121x+83

We want to find the time at which the rocket will hit the ground.

If it hits the ground, the height of the rocket <em>y</em> will be 0. Thus:

0=-16x^2+121x+83

We can solve for <em>x</em>. Factoring (if possible at all) or completing the square can be tedious, so we can use the quadratic formula:

\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

In this case, <em>a</em> = -16, <em>b</em> = 121, and <em>c </em>= 83. Substitute:

\displaystyle x=\frac{-(121)\pm\sqrt{(121)^2-4(-16)(83)}}{2(-16)}

Simplify:

\displaystyle x=\frac{-121\pm\sqrt{19953}}{-32}

Divide everything by -1 and simplify the square root. The plus/minus will remain unchanged:

\displaystyle x=\frac{121\pm3\sqrt{2217}}{32}

Therefore, our two solutions are:

\displaystyle x=\frac{121+3\sqrt{2217}}{32}\approx 8.20\text{ or } x=\frac{121-3\sqrt{2217}}{32}\approx -0.63

Since time cannot be negative, we can ignore the second solution.

Therefore, the rocket will hit the ground after about 8.20 seconds.

7 0
3 years ago
What are the simplified version of these?
Helga [31]
-2y-(-8y-2) = -2y + 8y + 2 = 6y + 2

2(3x + 16) - 7x = 6x + 32 - 7x = -1x + 32 = 32 - x

-x + 6 + (-3) + x + (-4) = -x + 6 - 3 + x - 4 = 3 - 4 = -1
4 0
3 years ago
A number that can be written as a fraction of two interfere is called a _____ number.it has a decimal representation that termin
goblinko [34]

Answer: imijijjjjntjiifrjifr line juce

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • I need help with #2 please help and I need the work
    10·1 answer
  • Distance between 0,2 and 8,8
    6·1 answer
  • Can someone help? (Multiple answers)
    8·2 answers
  • I just need question 2, please help
    7·2 answers
  • Someone please help me with this
    10·2 answers
  • Digital Plus manufactures cameras. Last year, the company was able to produce 25,000 cameras each month.After introducing a new
    5·1 answer
  • George the Pigeon travels the same distance of 72 miles
    10·1 answer
  • What is the nth term for<br> - 2, 7, 22, 43​
    9·1 answer
  • Multiply. 893 × 578 = 516,145 561,154 516,154 516,144
    15·1 answer
  • 2y-3x=-14<br> Need to solve it into slope-intercept form.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!