there are 20 girls in the school choir. 15% of them wear glasses. how many girls in the choir wear glasses?

Answers

Answer 1

Answer:

3 wear glasses

Step-by-step explanation:

10%=2

5%=1

15%=3


Related Questions

4/s-3 + s/2 = -2
Need help please​

Answers

Step-by-step explanation:

Given equation is 4/(s-3) + (s/2) = -2

=> [(4×2)+s(s-3)]/2(s-3) = -2

=> (8+s²-3s)/(2s-6) = -2

=> 8+s²-3s = -2(2s-6)

=> 8+s²-3s = -4s+12

=> s²-3s+8+4s-12 = 0

=> s²+s-4 = 0

The standard form is s²+s-4 = 0

SHOW YOUR WORK FOR EACH ONE!


5. 10(x − 1)

6) −7(1 + 4x)

7) 7(−v − 7)

8) 7(2 − x)

9) 4(−7 − x)

10) 5(k − 5)

Answers

Answer:

PLZ MARK BRAINLIEST

Step-by-step explanation:

5. Distribute 10 (x - 1 )

10x - 10 = 10x -10

6. -7 (1+4x)

-7 ( 4x +1)

= -28x -7

7.  7 (-v-7)

  =  - 7v - 49

8. 7 ( 2 - x )

    7 (- x + 2 )

= - 7 x + 14

9. 4 ( - 7 - x )

    4 ( - x - 7)

= -4 x -28

10.  5 ( k - 5 )

      5k - 25

=  5k - 25

Help me please this is due please help

Answers

Answer:

2.8in^2

Step-by-step explanation:

3.2 * 0.875 = 2.8

Hello there!

To find the area of this rectangle, we must multiply the length times the width:

A=[tex]3\frac{1}{5} *\frac{7}{8}[/tex]

Let's convert the mixed number into an improper fraction:

[tex]\frac{16}{5} *\frac{7}{8}[/tex]

Do you see what I see?

16 and 8 can be reduced. Divide by 8:

[tex]\frac{2}{5} *\frac{7}{1}[/tex]

Now multiply:

[tex]\frac{14}{5} \\[/tex]

Hope it helps you!

#HaveAnAmazingDay

~Just a joyful teen

[tex]GraceRosalia :)\\****************************************\\Comment:[/tex]

If my answer was helpful, please mark Brainliest! :)

write factors of a2b

Answers

Answer:

The factors of a^2b is a×a×b.

Find the cube of the number 50​

Answers

Answer:

125000

Step-by-step explanation:

how would I solve this??

Answers

Answer:

y = 140

Step-by-step explanation:

you'd do:

y=25(7)-35

y=175-35

y=140

to double-check your math:

140 = 25(7)-35

both sides will equal 140 (or the same value) if done properly

Which of the following ordered pairs make this
equation true?
y = 2x + 1

A. (1,2)
B. (2,5)
C. (7,3)
D. (9, 4)

Answers

Answer:

B. (2, 5)

Step-by-step explanation:

If x = 2,

y = 2(2) + 1

= 5.

The answer is B hope this helped my friend!

What is 10/16-3/16=

Answers

Answer:

7/16

Step-by-step explanation:

please give brainliest

WILL GIVE BRAINLIEST TO ANSWER

Answers

Answer:

A , D , E

Step-by-step explanation:

Substitute x = 2 into f(x) and check if the result is 4

(a)

f(2) = 2² = 4 ← then f(2) = 4

(b)

f(2) = 2 + 6 = 8 ≠ 4

(c)

f(2) = 4(2) + 2 = 8 + 2 = 10 ≠ 4

(d)

f(2) = 2² = 4 ← then f(2) = 4

(e)

f(2) = 8(2) - 12 = 16 - 12 = 4 ← then f(2) = 4

May I please receive help?

Answers

Answer:

you may

2x+15+4x+21=90 simplified is 6x+36=90

m<a=33º

m<b=90º

m<c=57º

Step-by-step explanation:

6x+36=90

6x=54

x=9

2(9)+15=33

4(9)+21=57

Which of the following expressions is equivalent to 4(2x+y) ?

Answers

Answer:

what expressions

Step-by-step explanation:

Answer:

Step-by-step explanation:

First expand the expression so you know the coefficients of x and y.

4(2x+y+2y) = 4(2x+3y) = 8x+12y

8x+12y  =  8x+12y

6x+7y  ≠  6x+12y

8x+y+2y  = 8x + 3y ≠  8x+12y

8x+4y+8y = 8x+12y = 8x+12y

hope this help

writing carla has already written 10 pages of a novel she plans to write 15 additional pages per month until she is finished A.write an equation to find the total number of pages P written after any number of months MB. graph the equation on the grid at the rightC. find the total number of pages written after 5 months

Answers

Answer:

P = 5M + 10

Step-by-step explanation:

15 pages/month * M months + 10 pages = P pages

5 Months = 5*15 + 10 = 85 pages

3x – 15 = 39
=
What does x equal

Answers

3x - 15 = 39
+ 15 +15

3x = 54 (divide by 3 on each side)

X = 18

Answer:

X=18

Step-by-step explanation:

To isolate X you need to get rid of the -15 to do that you can add 15 on both sides of the equation resulting in 3x=54 now you need to divide both sides by 3 to get x on its own which is X=18.

=
?
(5
4
⋅b
−10
)
−6

Answers

[tex](5^{4} *\frac{1}{b^{10} }) ^{-6}[/tex]

[tex](\frac{5^{4} }{b^{10} } )^{-6}[/tex]

[tex]\frac{b^{60} }{5^{24} }[/tex]

Solve the equation for the y-value and choose whether it is a direct variation or inverse variation

xy = 7

Answers

Answer: Choice B

y = 7/x

inverse variation

=========================================================

Explanation:

We divide both sides by x to isolate y. That's how we go from xy = 7 to y = 7/x

This is an inverse variation because it's in the form y = k/x. The constant is k = 7.

A functionf(x) is graphed on the coordinate plane.


What is the function rule in slope-intercept form?



Enter your answer in the box.

f(x)=

Answers

Answer:

y = -1/2x + b  meaning f(x) = -1/2x + b

Step-by-step explanation:

Use two points on the graph that you can find the value of  or use Slope = raise/run

let use points (2,0) and (0, 1)

slope = (change in the y-value)/(change in the x-value.

slope = (1 - 0)/(0 - 2)

slope = 1/-2 or -1/2

Or starting at point (2, 0) the run(x movement) = -2 and the raise is 1.

slope = raise/run

slope =  1/-2 or -1/2

Using one point (2,0) and the slope of -1/2, substitute into the slope intersect form, y = mx + b, and solve for "b" .

y= mx + b

0 = -1/2(2) + b

0 = -1 + b

1 = b

Now write your equation: y = mx +b where m = -1/2 and b = 1

y = -1/2x +b

It rained 20% of the time during Sping. There are 90 days in Spring. How many total dayd did it rain?

Answers

Answer: 18 days

Step-by-step explanation: you multiply 90 by 0.2 and you get 18

What is the answer for x?

Answers

Answer:

x = -5/7

Step-by-step explanation:

How many ways can you make the number 2? (Using consecutive numbers)

Answers

some ways you can make the number 2 are

Answer

For any two consecutive odd numbers, the difference is 2. For example, 3 and 5 are two consecutive odd numbers, their difference = 5 - 3 = 2. For any two consecutive even numbers, the difference is 2. For example, 6 and 8 are two consecutive even numbers, their difference = 8 - 6 = 2.

Kent has already saved $150 and he plans to save $20 every week. Proportional or Non-proportional

Answers

Answer:

this problem is  Non-proportional

Step-by-step explanation:

hope this helps

hi, can anyone help with b) and c)?

Answers

Answer:

steps below

Step-by-step explanation:

From the graph: parabola pass (0,4) (3,4) (1,2)

equation: y = ax² + bx + c

(0,4): c = 4

(3,4): 9a + 3b + 4 = 4       9a+3b = 0       3a + b = 0   ... (1)

(1,2):  a + b + 4 = 2            a+b = -2   ... (2)

(1)-(2): 2a = 2        a = 1

(2):      b = -3

parabola equation: f(x) = x² - 3x +4

(a)  f(3) = 3² - 3*3 + 4 = 4

(b) normal line: parallel to tangent line y = 3x -5 at (3,4)

    slope of line N: -1/3   pass (3,4)

    equation of N: (y-4)/(x-3) = -1/3         y-4 = -1/3 x + 1

     line N: 1/3 x + y - 5 = 0

(c) picture attached

who wants points answer this ;)

5 x 5

Answers

Answer:

25

Step-by-step explanation:

ez thanks for the fr3e points

Have a good day bro cya)

It’s 25 and thanks for the points I guess

Jeff walks 3 1/2 miles in 3/4 hour. In 1 1/4 hour Sarah walks 6 3/4 miles. Who walks faster

Answers

I think it should be jeff

Divide. 46 532 Enter your answer by filling in the boxes

Answers

Answer:

11.5652173913

Step-by-step explanation:

You might have to round

What is the equation of the line parallel to the line with the equation −x+3y=−3
that passes through the point (1, –6)

Answers

Answer:

y = 1/3x - 19/3

Step-by-step explanation:

3y = x -3

y = 1/3x -3

Slope = 1/3

Point= (1,-6)

y-intercept = -6 - (1/3)(1) = -6 - 1/3 = -19/3

Are the two lines parallel?
If so, then what is the slope?

Yes, and the slope is 2.
Yes, and the slope is 5/2
res, and the slope is 2/5
No, They are not parallel

Answers

Answer and Step-by-step explanation:

(3rd option) The two lines are parallel, and they have a slope of [tex]\frac{2}{5}[/tex].

First, we can see that the two lines look parallel (meaning that if you were to go beyond what the graph shows (unless the graph shows an intersection), the lines at no point will intersect).

Second, If you found the slope of each line as well, (slope = rise over run, count up and then count right in this scenario from any point), they are the same, meaning they must be parallel to each other.

#teamtrees #PAW (Plant And Water)

I hope this helps!

Using the slope formula, find the slope of the line through the given points.
(12,0) and (4,-6)

Answers

Answer:

Step-by-step explanation:

gradient = y2-y1/x2-x1

-6-0/4-12

-6/-8

=3/4

PLEASE HELP IT’S DUE TMR
you only have to answer F

Answers

Answer:

1 bat : 0 hits

Step-by-step explanation:

To get this unit rate all you have to do is divide both sides by 4.

(4/4) : (0/4) = 1:0

We get the same number of hits as in the original problem because 0 divided by any number (other than 0) will always equal 0.

Can I get brainliest please?

Help me with the question in the image it’s geometry

Answers

Answer:

<BAC=100°

Step-by-step explanation:

<ACB = <DCE - vertical angles are congruent

<ACB = 45° - substitute <DCE = 45° <ACB = <DCE

<ABC + <ACB + <BAC = 180° - angle sum theorem

35° + 45° + <BAC = 180° - substitute <ABC = 35°, <ACB = 45° INTO <ABC + <ACB + <BAC = 180 °

35°+ 45° + <BAC = 180°

180° - 80° = 100

A flock of birds perched on a tree. In the morning, each bird perched 1 tree and 1 bird left. In the afternoon, 2 chicks perched, 1 tree left over. Ask how many birds, how many trees?

Answers

Answer:

2 birds 1 tree

Step-by-step explanation:

I think only not sure

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