RATIO AND PROPORTION
1st correct answer is marked brainliest

Answer:

a) 20 sixth graders.

b) 6 sixth graders.

c) 2/9x sixth graders.

d) 189 students in the school.

Step-by-step explanation:

a) 2/9 of 90 = 2/9 * 90 = 20 students.

b) 2/9 of 27 = 2/9 * 27 = 6 students.

c) 2/9 of x = 2/9x

d) 42 = 2/9x so solve the equation: x = 189 students.

If we have 90 students in the school then we will have  20 sixth grade students.

a. From the details of the question, we have 2/9 of the students in the school in sixth grade. Hence;

Number of students in sixth grade = 2/9 × 90 = 20 sixth grade students

b. If the school has 27 students, number of sixth graders =  2/9 ×  27 = 6 sixth grade students

c. If we have x students in the school, the number of sixth graders =  2/9 × x = 2/9x students

d. If we have 42 students in sixth grade, the number of students in the school is;

2/9 × x = 42

x = 9/2 × 42 = 189 students

Learn more about fractions: https://brainly.com/question/1301963

Answer:

1. h,k

2. -3, -5

3. 1, 7

4. 9, -2

5. -4, -6

Step-by-step explanation:

Answer:

Step-by-step explanation:

The set up is right angled

Length of the ladder = Hypotenuse = 35ft

Height of window = opposite = 25ft

Using SOH CAH TOA

sin theta = opp/hyp

sin theta = 25/35

sin theta = 5/7

theta = arcsin(5/7)

theta = arcsin()0.7143)

theta = 45.6

Hence the angle of elevation is 45.6

A

10 for what? is there a problem? I could help solve it

Step-by-step explanation:

Answer:

C) x^7y²+4x³+10x³

Step-by-step explanation:

C) x^7y²+4x³+10x³

Look down at the photos!

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V

Answer: It's 1/10 square units^3

Step-by-step explanation: 3/20 * 2/3

multiply the 3 times the 2, then multiply the 20 times the 3 and you will get 6/60 which simplifies to 1/10. Hope this helps.

Answer:

0.2

Step-by-step explanation:

Sorry i dk how to explain it

Answer:

C

Step-by-step explanation:

A is impossible. You cannot have both a right triangle and in the same triangle have an angle in it that is over 90 (that's the meaning of scalene)

B is sort of true, but only sort of. All scalene triangles have an angle over 90 and 2 acute angles.

C this is the answer to the question. It has 1 right angle and 2 equal sides. The two equal sides make it isosceles and the right angle is given.

D an acute triangle has three angles under 90 that add to 180. Not the right description.

A triangle with one right angle and two congruent sides is described as a "right isosceles triangle." (Option C)

Let's break down the terms:

1. Right Angle: A right angle is an angle that measures exactly 90 degrees.

2. Isosceles Triangle: An isosceles triangle is a triangle with at least two sides of equal length (congruent sides).

3. Right Isosceles Triangle: A right isosceles triangle is a special type of isosceles triangle where one of the angles is a right angle (90 degrees) and the other two angles are equal, each measuring 45 degrees.

In a right isosceles triangle, the two congruent sides are the legs of the right triangle, and the third side (opposite the right angle) is called the hypotenuse.

So, among the given options, the best description for a triangle with one right angle and two congruent sides is a "right isosceles triangle" (Option C).

To know more about right isosceles triangle, refer here:

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Answer:

the second bubble is the answer

Step-by-step explanation:

Answer:

For the one in the picture, it is 121. A.

Step-by-step explanation:

This is because 45% of 220 is 99. But, the question is asking for how many coins are NOT, so you do 220 - 99 to get 121.

Answer: the last one

Step-by-step explanation:

Answer:

There is no picture... But here is a representation of the inequality on a graph

The graph 2x - 5y < 3 cut the x-axis at the point (3,0) and the y-axis at the point (0,-0.6).

When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.

Given inequality is 2x - 5y <3. A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

When the inequality 2x - 5y < 3 is plotted on the graph it covers the region which is less than the line 2x - 5y < 3. The graph cut the x-axis at the point (3,0) and the y-axis at the point (0,-0.6).

The graph of the given inequality is attached with the answer below.

To know more about inequality follow

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Answer:

1. 17.8 cm

2. 32.0 cm

3. 15.9 m

Step-by-step explanation:

1. Determination of the length of the arc.

Radius (r) = 6 cm

Angle at the centre (θ) = 170°

Pi (π) = 3.14

Length of arc (L) = ?

L = θ/360 × 2πr

L = 170/360 × 2 × 3.14 × 6

L = 17/36 × 37.68

L = 17.8 cm

2. Determination of the length of the arc.

Diameter (d) = 13 cm

Angle at the centre (θ) = 282°

Pi (π) = 3.14

Length of arc (L) = ?

Next, we shall determine the radius. This can be obtained as follow:

Diameter (d) = 13 cm

Radius (r) =?

r = d/2

r = 13/2

r = 6.5 cm

Finally, we shall determine the length of the arc. This can be obtained as follow:

Radius (r) = 6.5 cm

Angle at the centre (θ) = 282°

Pi (π) = 3.14

Length of arc (L) = ?

L = θ/360 × 2πr

L = 282/360 × 2 × 3.14 × 6.5

L = 282/360 × 40.82

L = 32.0 cm

3. Determination of the length of the arc.

Radius (r) = 11 m

Angle at the centre (θ) = 83°

Pi (π) = 3.14

Length of arc (L) = ?

L = θ/360 × 2πr

L = 83/360 × 2 × 3.14 × 11

L = 83/360 × 69.08

L = 15.9 m

Answer:

48.6g

Step-by-step explanation:

72.9 / 9 = 8.1 (divide by 9 to get the amount of sugar needed for 1 cake)

8.1 x 6 = 48.6 (multiply it by 6 to get the amount of sugar needed for 6 cakes)

Answer:

520.83 k g  of seed

Step-by-step explanation:

Answer:

A #2.5#-#kg# bag of grass seed covers an area of #1200# #m^2#. How much seed is needed to cover a square park with side length #500# #m#?

Step-by-step explanation:

Answer:

s=-130.54

z=392.35

if you were to run a business like this I belive you would be losing alot of money perhaps try and check if your missing a decimal

Step-by-step explanation:

Squash=s

Zucchini=z

5s+2z=132

3s+z=.73

Im not sure why your prices are so different, but I think you may have forgotten a decimal point.

set z by itself using the 2nd equation

z=-3s+.73

substitute the equation into the first one

5s+2(-3s+.73)=132

expand

5s-6s+1.46=132

move the 1.46 to the other side and simplify

-s=130.54

s=-130.54

now put this back into one of the equations to find z

3(-130.54)+z=.73

z=392.35

Answer:

nice pfp also 2507.99

Step-by-step explanation:

you would find out 3/5ths of the amount of money she earned then multiply 20 by 2 then take that away from whatevers left from paying bills then subtract 12.99 from the 2520.98 you got after paying for the shirts leaving you with 2507.99

Answer:

Answer:

y = -5(x - 7)^3 - 1

Step-by-step explanation:

You kind of just plug in the numbers.

a vertical stretch by a factor of ​5: y = 5x^3

a reflection across the​ x-axis: y = -5x^3

a vertical translation 1 unit down: -5x^3 - 1

a horizontal translation 7 units right: -5(x - 7)^3 -1

Step-by-step explanation:

Answer:

B) y = 1/3x - 2

Step-by-step explanation:

i plotted the points on a graph and found the rise and the run

Answer:

m=5

Step-by-step explanation:

Answer:

student loan

Step-by-step explanation:

read then re read

Answer:

student loan

Step-by-step explanation:

its college

Answer:

Step-by-step explanation:

(4,3)(-6,3)

3-3/-6-4

m=0

y=3

Answer:

y=3

Step-by-step explanation:

Something that I notice about this is that the 2 y coordinates are the same

This means that the line isn't increasing nor decreasing, it's constant

if we look at the y=mx+b

we have, so far,

y=0x+b

we just need be

we know that when x=4 y=3 so we have

3=(0)(4)+b

b=3

so the answer is just y=3

Answer:

Not a function

Step-by-step explanation:

A relation is considered a function if and only if every input value has exactly one output value.

The relation given does not satisfy the condition of a function. The input value, height = 160 cm, is related to different output values (age).

Therefore, the relation is not a function.

Answer:

The 9 pack is cheaper.

Step-by-step explanation:

A pack of 9 for $15.66 would cost 57 cents per bulb.

A pack of 6 for $6.84 would cost 87 cents per bulb.

The 9 pack would be cheaper to buy.

Hope this helps!

Answer:

see below

Step-by-step explanation:

(1,4)

(2,1)

(3,2)

(4,3)

i listed them in the order shown, like if i wrote 4 then it's 4th on the list lol

Answer:

I'm gonna say the order from left to right so for example, if I say 1 1 to 4, i mean the first one on the left, leads to the last one on the right. Answers are below:

Step-by-step explanation:

1 to 4

2 to 1

3 to 3

4 to 2.

And before you say i copied the person above me, I didn't. Their answers are wrong, all i did was copy the idea because i don't have enough time to write out the actual answers. Hope this helped.

Answer:

[tex]P(x \ge 45000) = 0.77935[/tex]

Step-by-step explanation:

Given [Missing from the question]

Exhibit Teacher's Salary:

[tex]\bar x=50000[/tex]

[tex]s = 6500[/tex]

Required

Calculate [tex]P(x\ge 45000)[/tex]

First, we calculate the z score

[tex]z = \frac{x - \bar x}{s}[/tex]

[tex]z = \frac{45000 - 50000}{6500}[/tex]

[tex]z = \frac{-5000}{6500}[/tex]

[tex]z = -0.77[/tex]

[tex]P(x \ge 45000) = P(z \ge -0.77)[/tex]

[tex]P(x \ge 45000) = 1 - P(z \le -0.77)[/tex]

From the table:

[tex]P(z \le -0.77) = 0.22065[/tex]

So, we have:

[tex]P(x \ge 45000) = 1 - 0.22065[/tex]

[tex]P(x \ge 45000) = 0.77935[/tex]