The ratio of students that wear glasses to students that do not wear glasses is 1:4. If there were a total of 30 students. How many students wear glasses?

Answers

Answer 1

Answer:

34

Step-by-step explanation:

Answer 2

Answer:

6

Step-by-step explanation:

For every 5 students, 1 wears glasses and 4 don't.  If you take the total number of students, 30, and divide it by 5, you have 6 groups of 5 students.  There will be 1 student for each of those groups wearing glasses, or 6 students.


Related Questions

Solve 27 * 9


help and explain this to me! im in 6th grade so dont make it to hard

Answers

Answer:

243

Step-by-step explanation:

I think it is just 27 times 9

Answer:

243

Step-by-step explanation:

who got the answer to this ?
(4x^2+6+7)-(-8x^2-2x+6)

Answers

Answer:

12x^2+2x+7

Step-by-step explanation:

Distribute the Negative Sign:

=4x^2+6+7+−1(−8x^2−2x+6)

=4x^2+6+7+−1(−8x^2)+−1(−2x)+(−1)(6)

=4x^2+6+7+8x^2+2x+−6

Combine Like Terms:

=4x^2+6+7+8x^2+2x+−6

=(4x^2+8x^2)+(2x)+(6+7+−6)

=12x^2+2x+7

Three times a number increased by one is between negative eight and seven find all the numbers.

All the numbers that makes the statement true are given by?

Please hurry this is on my exam

Answers

This is about absolute value inequalities.

The set of possible values of x that make the statement true are; x = {-2, -1, 0, 1}

Let the number in the question be x.

We are told that when it is multiplied by 3 and 1 added to it, it is between - 8 and 7. This means it is greater than -8 but less than 7.

Thus;

3x + 1 > -8  - - - (eq 1)

3x + 1 < 7  - - - (eq 2)

Let's find range of x from eq 1;

3x + 1 > -8

Subtract 1 from both sides to get;

3x > -9

x > -9/3

x > -3

Similarly, let's find the range of x from eq 2;

3x + 1 < 7

Subtract 1 from both sides to get;

3x < 7 - 1

3x < 6

x < 6/3

x < 2

Thus, we can write that;

-3 < x < 2

Thus, the set of possible values of x are; x = {-2, -1, 0, 1}

Read more at; brainly.com/question/18119747

Is <1 and <7 supplementary

Answers

Yes

Angle 1 and angle 4 add up to 180 degrees because they are on the same straight line split into two parts, and a straight line is 180 degrees. Angle 4 and angle 7 are corresponding angles, which means they occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal. Supplementary angles mean that any two angles add up to 180 degrees. Since 4 and 7 are corresponding, 1 and 7 must be supplementary

Anyone want to try this?

I’ll give the answer later.

If your try doing this then... good luck! :)

Answers

Answer:

D

Step-by-step explanation:

Volume of cylinder = Base x height

Base = πr^2 = 25π

Volume = 25π x 10 = 250π

Volume of cone = 1/3 Base x height

= 1/3 x 25π x 5 = 125π/3

Volume of silo = cylinder + cone + cone

= 250π + 125π/3 + 125π/3

= 785.4 + 130.9 + 130.9

= 1047.2

plz help. its easy brainliest

Answers

Answer:

ur welcome brainliesit pls

Step-by-step explanation:

6. x=2

7. x=3

8.x=-7

Given:
p: student achieves 90 percent on the geometry final.
q: student will receive a passing grade in geometry class.
Which statement is logically equivalent to q - p?
If a student achieves 90 percent on the geometry final, then the student will pass geometry class.
If a student passes geometry class, then the student achieved 90 percent on the geometry final.
If a student did not achieve 90 percent on the geometry final, then the student did not pass geometry class.
Olfa student did not pass geometry class, then the student did not achieve 90 percent on the geometry final.

Answers

the answer would be c

Answer:

c

Step-by-step explanation:

What is the percent of change of 62 trees to 31 trees

Answers

Answer:

62 trees = 100%

62 / 2 = 31 trees

100% / 2 = 50%

31 trees = 50%

Step-by-step explanation:

What is the value of the expression below.
||3-7| - |-6+3||

Answers

Answer:

1

Step-by-step explanation:

[tex]||3-7| - |-6+3||[/tex]

||-4|- |-3||

|4-3|

|1|

the slope of a hill 3/190. The Hill has a ride of 400m. What is the horizontal distance covered by the hill?​

Answers

Answer:

its 5

Step-by-step explanation:

The hill with a rise of 400m and a slope of 3/190 covers approximately 25333.33 meters horizontally.

Slope is a term used to describe how steep or inclined a line is on a graph. It shows the proportion of the rise to the run or vertical change, between any two points on a line. The slope is a fundamental idea in geometry, algebra and calculus; it shows how much the line rises or falls for each unit of horizontal distance. A slope of zero denotes a horizontal line while positive slopes denote upward inclines, negative slopes denote downward inclines, and vice versa.

Slope = rise / run

Given that the slope of the hill is 3/190 and the rise is 400m, we can set up the equation:

3/190 = 400 / run

run = 400 / (3/190) = 400 × (190/3)

      = 400 × 63.33 ≈ 25333.33 meters

the horizontal distance covered by the hill is approximately 25333.33 meters.

learn more about slope here

brainly.com/question/2491620

#SPJ2

How many solutions does this equation have? 5 + 2(3 + 2x) = x + 3(x + 1) *

One Solution
Infinite Solutions
No Solutions

Answers

Answer:

no solutions

Step-by-step explanation:

Hi there!

Here is an answer:

[tex]5 + 2(3 + 2x) = x + 3(x + 1)\\11+4x=4x+3\\11=3,\;wrong[/tex]

Hope this helps)

Have a nice day!

Calculate 3cm ,4cm, 10cm and 2cm

Answers

Answer:

19cm

Step-by-step explanation:

(chose one way)

1. way using commutativity

(3cm+4cm)+(10cm+2cm)=7cm+12cm=19cm

2. way just writing

3cm+4cm+10cm+2cm=19cm

Lanie works part-time at Sweet Treats Catering. She earns $13.25 per hour and work 25 hours a
week. She is paid semi-monthly.
a. Calculate her gross pay for 1 paycheck. Show all your math calculations.

Answers

Answer:

Semi-monthly gross pay = $662.5

Step-by-step explanation:

Given:

Earning per hour = $13.25

Number of hours per week = 25 hours

Find:

Semi-monthly gross pay

Computation:

Assume two week in semi-month

So,

Total working hour = 2(25)

Total working hour = 50 hours

Semi-monthly gross pay = Total working hour × Earning per hour

Semi-monthly gross pay = 50 × 13.25

Semi-monthly gross pay = $662.5

The sum of two consecutive integers is
−23.
Find the numbers.

Answers

Answer:

-11 and -12

Step-by-step explanation:

first integer:  x

second integer:  x + 1

x + x + 1 = -23

2x + 1 = -23

2x = -24

x = -12

first integer:  -12

second integer:  -12 + 1 = -11


What do the factors in the factored form represent?

Answers

Answer:

The factored form tells you the times at which the object's height is zero (the roots). ... Write the equation for this parabola in vertex form, factored form, and general form. From the graph you can see that the x-intercepts are 3 and 5. So the factored form contains the binomial expressions (x 3) and (x 5).

Step-by-step explanation:

could u  answer my newest question? ive been stuck on it for hours

Mrs Buchanan is planning

Answers

Answer:

what?

Step-by-step explanation:

Answer:

Your question is not clear

I need the answer plzz

Answers

Answer:

The correct coordinates are (3, 4).

Gabriela may have reflected Figure ABCD across the x-axis.

Step-by-step explanation: Looked at graph.

Hope this helps!

9) Express the ratio 18:30 in lowest terms.

Answers

Answer:

3:5

Step-by-step explanation:

take the biggest common factor which would be 6 in this case, and just divide the two out by that. 3:5

A line is drawn on the coordinate plane that passes through the point (10,1) and has a slope of -0.5. The y-intercept of the line is

Answers

1 is the y intercept

g(x) = -4x – 5
f(x) = -4x - 1
Find g(-6) + f(-6)

Answers

Answer:

19+23

Step-by-step explanation:

Determine whether the equation below has a one solutions, no solutions, or an infinite number of solutions. Afterwards, determine two values of xx that support your conclusion. x=x-5

Answers

Answer:

no solution

Step-by-step explanation:

X cannot equal itself minus 5, in the same way if we replace it by let's say, 6...

6 does not equal 6-5 (1)........ and by the way in this specific equation 6 is just an example it does not matter what you replace it with, x can never = x-5

Hope this helped! Good Luck!

y= 4x-3?
Help me please

Answers

The answer is -3

Have a good day

Answer:

5  hi

Step-by-step explanation:

Help? Please? This is algebra math

Answers

Answer:

You count the blocks and then put the amount of blocks before:)

(That sounds confusing but it sounds harder than it is)

The answer would be 3xy + 4x

Step-by-step explanation:

How many xy blocks are there? yea there's 3 so you do 3xy

you can't add xy and x blocks together because xy is a different unit than x (xy is x times y) so then you'd count the other x blocks seperately

(I'm sorry if I'm wrong on this lol)

Angine and kenny play online video games. Angine buys 1 software package and 2 months of game play. Kenny buys one software package and 4 months worth of game play. Each software package cost $20. If their total cost $142, what is the cost of one month of gameplay?

Answers

Answer:17$

Step-by-step explanation:

I need help on it pls​

Answers

Answer:

The answer is 15,008 you clicked the right one.

Step-by-step explanation:

Answer: your answer is right

Step-by-step explanation: i did the computation

For a small charge, you arrange to have the hardware store deliver your purchase for you

You pay for your purchase, plus the sales tax, plus the delivery charge.

Answers

Delivery at it’s very finest

In the figure shown, r l l s

Answers

I think it’s B because if <2 is congruent to <6, <6 would equal 146 degrees. <6 and <7 are supplementary, which means they add up to 180 degrees since they form a straight line. If <6 is 146 degrees, <7 would have to be 34 degrees.

After three plays in which a football team lost 7 yd, gained 3 yd, and
lost 1 yd, respectively, the ball was placed on the team’s own 30-yd line.
Where was the ball before the three plays?

Answers

Answer:

25 Yard line was the previous location.

Step-by-step explanation:

-7+3-1= -8+3= -5

30-5=25.

Which of the following statements best describes the effect of replacing the graph of f(x) with the graph of f(x) + 4? (1 point)

The graph shifts 4 units up.
The graph shifts 4 units down.
The graph shifts 4 units left.
The graph shifts 4 units right.

Answers

Answer:

C The graph shifts 4 units left.

Step-by-step explanation:

Answer: its A

Step-by-step explanation:

i took the test on flvs lol

Which ratios approximate pi ​(​)?
Select all the ratios that approximate pi ​(​).
A.
​66:21
B.
​60:20
C.
​21:7
D.
​45:15
E.
​22:7

Answers

9514 1404 393

Answer:

  A: 66/21

  E: 22/7

Step-by-step explanation:

The offered choices reduce to 3 1/7 or to 3. The best approximations of those given are the ones that reduce to 3 1/7.

  A: 66/21 = 22/7 = 3 1/7

  B: 60/20 = 3

  C: 21/7 = 3

  D: 45/15 = 3

  E: 22/7 = 3 1/7

___

Comment on pi approximations

The ratio 22/7 differs from π by about 0.04%. A better approximation is 355/113, which differs from π by about 0.000008%. The approximation 3.14 differs from π by about 0.05%.

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