After the first semester of 6th grade, the ratio of the number of math students earning an A to the number of students earning a B was 2:9. However, after the second semester, the ratio of the number of math students earning an A to the number of math students earning a B was changed to 4:7.   How many students had a B at the end of the first semester if there were 92 students who received an A in the second semester?

Answer:

12.5

Step-by-step explanation:

75 ÷ 6

please give brainliest

Let's solve your equation step-by-step.

x2+x=12

Step 1: Subtract 12 from both sides.

x2+x−12=12−12

x2+x−12=0

Step 2: Factor left side of equation.

(x−3)(x+4)=0

Step 3: Set factors equal to 0.

x−3=0 or x+4=0

x=3 or x=−4

Answer:

x=3 or x=−4

Answer:

166

Step-by-step explanation:

m =13

n = 12

m x n

= 13 x 12

= 166

Answer:

-5 ≤x≤6

[-5,6]

Step-by-step explanation:

The domain is the values that the input takes

x goes from -5 (inclusive) to 6 (inclusive)

-5 ≤x≤6

[-5,6]

Answer:

[-5, 6]

Step-by-step explanation:

    The domain of a function is the list of x values. Since the endpoints are shaded, that means those x values are included as well. Therefore, the domain of f is [-5, 6].

Answer:

It's equilateral. Equilateral triangles are three equal-sided polygons. Remember that. It helps.

Answer:

4y - 12

Step-by-step explanation:

4(y - 3)

(4 x y) - (4 x 3)

Answer:

salamat po sa

points.

pa

Step-by-step explanation:

branlest

answer

po

Answer:

x = 3

perimeter: 18 units

Step-by-step explanation:

1. First, we should know that a regular polygon is a polygon that has all angles  the same angle measure and all sides the same side length.

2. (Solving)

Step 1: Simplify both sides of the equation.

Step 2: Subtract 7x from both sides.

Step 3: Subtract 10 from both sides.

Step 4: Divide both sides by -2.

Step 5: Check if solution is correct.

3. Now, since this polygon has 6 sides, it's a hexagon. To find the perimeter of a hexagon, we just multiply the length of one side 6 times.

Therefore, x = 3 and the perimeter is 18 units.

Answer:

Distance = 5

Step-by-step explanation:

D= sqrt (x1-x2)^2 + (y1-y2)^2

(5-2)^2 + (8-4)^2=3^2 + 4 ^2 = 9 +16 = 25

Sqrt of 25 = 5

Distance = 5

Hope this helps

Answer:

d=3.605551

Step-by-step explanation:

d=(8−5)2+(4−2)2−−−−−−−−−−−−−−−√

d=(3)2+(2)2−−−−−−−−−√

d=9+4−−−−√

d=13−−√

d=3.605551

Answer:

Radius

Step-by-step explanation:

if the point is on the circle and from the centre to the supposed circumference is called the radius

Answer:

1 -9 09u and than add

Step-by-step explanation:

Answer:

The trigonometric ratio that I would use to find the distance from the base of the tower to the keys is the tangent; tan (86°) = height / distance.

Step-by-step explanation:

You can draw a right triangle with angle 86°, opposite leg equal to the height (50 meter) and adjacent leg equal to the distance from the base of the tower to the keys: tan (86°) = 50 m / x

=> x = 50 m / tan(86°)

x = 50 m / 14.30 = 0.98 m

Answer:

3

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

because i used my brain#

Answer:

yes

Step-by-step explanation:

[tex]\frac{16}{72}[/tex] ( divide numerator/ denominator by 8, the LCM of 16 and 72 )

= [tex]\frac{2}{9}[/tex]

[tex]\frac{18}{81}[/tex] (divide numerator/ denominator by 9 the LCM of 18 and 81 )

= [tex]\frac{2}{9}[/tex]

Both rational numbers simplify to [tex]\frac{2}{9}[/tex] and are equivalent

Answer:

Solution:-

Let the angle vertical to 64°be y.

y=64°(being vertically opposite angle)

Now,

X+y+62°=180°

X+64+62=180°

X=180°-126°

Therefore,x=54°

Answer:

C and A I beleive it is the answer not sure tho

Step-by-step explanation:

Answer:

c.

d.

Step-by-step explanation:

First question:

(4x + 3y)(2x - 5y) =

= 8x² - 20xy + 6xy - 15y²

= 8x² - 14xy - 15y²

Answer: c.

Second question:

(2a + 3)² =

= (2a + 3)(2a + 3)

= 4a² + 6a + 6a + 9

= 4a² + 12a + 9

Answer: d.

Answer:

✓ 42.25-39.85=2.437+1 1/4= 38.2539.25-38.25=1Eric came closer.\\

Step-by-step explanation:

:]

Answer:

eric came closer

Step-by-step explanation:

Answer:

C, period.

The amount of time between interest payments is known as period.

Answer:

48

Step-by-step explanation:

1/4 x = 12

x = 4*12

x=48

Answer:

638952

Step-by-step explanation:

Answer:

8.45

Step-by-step explanation

Convert 65% in decimal form

0.65 x 13 = 8.45

Answer:

[tex]x + 3y = 5...(1) \\ 2x + y = 8...(2) \\ 2 \times (1) \\ 2x + 6y = 5...(3) \\ (3) - (2) \\ 5y = 5 \\ y = \frac{5}{5} \\ \color{red} \boxed{y = 1} \\ sub \: in \: (1) \\ x + 3(1) = 5 \\ x = 5 - 3 \\ \color{blue} \boxed{x= 2}[/tex]

Answer:

x = —2

Step-by-step explanation:

h(x) = 4x — 1

if h(x) = -9 then 4x — 1 = -9

So:

[tex]4x - 1 = - 9 \\ 4x = - 9 + 1 \\ 4x = - 8 \\ x = - 2[/tex]

Answer:

x = -2

Step-by-step explanation:

[tex]-9=4x-1\\-8=4x\\-2=x[/tex]

Answer:

negative 1.16 million

Step-by-step explanation:

P = 1.38 - 2.54 = -1.16 = a negative profit of $1.16 million = a loss of $1.16 million

Answer:

well its -2*-3-3 so

-2*-3 is 6-3 is 3

Step-by-step explanation:

Answer:

y = |x| + 5

Step-by-step explanation:

Calculate the points with x = -4 to 4 and match the plots.  (Attached)

Answer:

m'=7

Step-by-step explanation:

they are parallel to each other so if slope of 1st line be "m" and 2nd line as "m' ", then we have:

m = m'

y-4=7x+14

y=7x+18

y=mx+h

So m = 7

& m' = 7

Answer:

980

Step-by-step explanation:

900+80=980

The three points that represents the proportional relationship will be;

⇒ (2 , 4) (3, 6) and (5, 10)

What is mean by Ratio?

A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y.

Where, x and y are individual amount of two quantities.

And, Total quantity gives after combine as x + y.

Given that;

The number cards are,

0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Now,

Since the proportions represents the equivalent ratios.

Hence,

We can take the points which represents the equivalent ratio.

So, We get the points as;

⇒ (2 , 4) (3, 6) and (5, 10)

Because all the ratio between every points represents the equivalent ratio.

That is;

2 : 4 = 1 : 2

3 : 6 = 1 : 2

5 : 10 = 1 : 2

Therefore,

The three points that represents the proportional relationship will be;

⇒ (2 , 4) (3, 6) and (5, 10)

Learn more about the proportions visit:

https://brainly.com/question/12024093

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