Solve 7 ÷ one half = ___.

Answer:

the ratio of boys to the total students is 15:27

Step-by-step explanation:

Since we know there are 15 boys and 12 girls, we can add those to know there are 27 total students. Therefore, the ratio it 15:27

Answer:

15:27

=5:9 (if answer is needed in simplest form)

Step-by-step explanation:

B  :  G   : Total

15 :   12 : 15+12=27

hence boys to total is 15:27

                                    =5:9 (if answer is needed in simplest form)

Answer:

The ladder is 5.09 m long

Step-by-step explanation:

Given that,

The height of the wall, P = 5 m

The base of the ladder is 1 m away from the wall.

We need to find the length of the ladder. Let it is H. We can solve it using the Pythagoras theorem. It can be given by :

[tex]H^2=P^2+B^2\\\\H^2=5^2+1^2\\\\H^2=25+1\\\\H=\sqrt{26} \\\\H=5.09\ m[/tex]

So, the ladder is 5.09 m long.

Answer: B sorry if I am wrong

Step-by-step explanation:

Answer:

1 × 7 is 7, 7 ×3 is 21

Step-by-step explanation: if this isn't what you meant then tell me, and ill tell you the answer

Answer:

115

Step-by-step explanation:

Answer: x = 115 degrees

Step-by-step explanation:

a triangle we know all angles had up to 180 degrees

for the first triangle we have 65 + 90 = 155 then we do 180 - 155 = 25

so for the small triangle one angle is 25 degrees

now for the other triangle we have 80 + 60 = 140 then 180 - 140 = 40

so now we have all angles except x and to find that we do 25 + 40 = 65 then to find x do 180 - 65 = 115

Answer:

A, B, D

Step-by-step explanation:

Answer:

2 units

Step-by-step explanation:

Flipping the rectangle over doesn't change the measure/area.

Answer:660

Step-by-step explanation:

Difference between 1/2 and 1/3 is 1/6 and 110 logs is 1/6 of the total logs

Answer:

-1760

Step-by-step explanation:

Sea level is 0 so if you under water then you are going into negatives.

9514 1404 393

Answer:

  y = -5x -1

Step-by-step explanation:

The 2-point form of the equation for a line can be useful.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (-11 -(-6))/(2 -1)(x -1) +(-6)

  y = -5/1(x -1) -6 . . . . . simplify a bit

  y = -5x -1 . . . . . slope-intercept form

The answer is C i just did the assignment and its correct. also, slide 4 of 11 is B,

slide 5 of 11 is D

slide 6 of 11 is B

slide 7 of 11 is sin, cos, 1, 0, cos

slide 8 of 11 is D

slide 9 of 11 is A

slide 10 of 11 is 0, 1, sin, 3, and 3

slide 11 of 11 is B

HOPE THIS HELPS:))))

The exact value of the given trigonometric function sin(140°)cos(20°) – cos(140°)sin(20°) is -√3/2.

Trigonometric functions are defined as the functions which show the relationship between the angle and sides of a right-angled triangle.

To find the exact value of sin(140°)cos(20°) – cos(140°)sin(20°), we can use the angle addition formula for sine:

sin(A+B) = sin(A)cos(B) + cos(A)sin(B)

We can use this formula to rewrite the expression as:

sin(140°)cos(20°) – cos(140°)sin(20°) = sin(120°+20°) - sin(120°-20°)

Then, using the angle addition formula for sine, we get:

sin(120°+20°) - sin(120°-20°) = sin(120°)cos(20°) + cos(120°)sin(20°) - sin(120°)cos(20°) + cos(120°)sin(20°)

This simplifies to:

2sin(120°)cos(20°) = 2sin(120°)cos(20°)

The value of sin(120°) is -1/2, and the value of cos(20°) is √3/2, so the final value of the expression is:

2(-1/2)(√3/2) = -√3/2

Learn more about Trigonometric functions here:

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Answer:A

Step-by-step explanation:1 cup is equal to 8 fluid ounces so 48/8=6 and since he needs to drink 8 cups of water the answer is 2 more.

The number of cups of water Gethyn need to drink more is 2 cups. Therefore, option A is the correct answer.

Metric Conversion refers to the conversion of the given units to desired units for any quantity to be measured.

Given that, Gethyn drinks 48 fluid ounces of water in one day.

We know that, 1 ounce = 0.125 cups

Here, 48 fluid ounces = 48×0.125

= 6 cups

Number of cups of fluid = 8-6

= 2 cups

Therefore, option A is the correct answer.

To learn more about the metric conversion visit:

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Answer:

Step-by-step explanation:

(x+4)² + y² = 1.5²

Answer:

Where are the options?

Step-by-step explanation:

Answer:

7/2

Step-by-step explanation:

hope it helps sorry if im wrong

The average rate of change of f(x) = 2x^2 - x - 4 over the interval -4 < x < 2 is -5.

To find the average rate of change of a function over an interval, we need to calculate the difference in the function values at the endpoints of the interval and divide it by the difference in the x-values.

The given function is f(x) = 2x^2 - x - 4.

Let's calculate the function values at the endpoints of the interval: -4 and 2.

For x = -4:

f(-4) = 2(-4)^2 - (-4) - 4 = 32 + 4 - 4 = 32.

For x = 2:

f(2) = 2(2)^2 - 2 - 4 = 8 - 2 - 4 = 2.

Now, we can calculate the difference in the function values: f(2) - f(-4) = 2 - 32 = -30.

Next, we calculate the difference in the x-values: 2 - (-4) = 6.

Finally, we can calculate the average rate of change by dividing the difference in the function values by the difference in the x-values:

Average Rate of Change = (f(2) - f(-4)) / (2 - (-4)) = -30 / 6 = -5.

For more such questions on  rate of change

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Answer:

1/3

Step-by-step explanation:

Divide both by 7, which equals 2/6 and that can be divided by 2, which equals 1/3

Answer:

Assuming that a and b are not the hypotenuse then B would be equal to A, so B would equal 25m

Step-by-step explanation:

I hope this is right, you didn't put a picture.

Answer:

The number of marbles of each color that should be present in the bag is;

1 red marble and 2 green marbles

Here, we note that the probability of a battery going dead = 1/3 and the

Therefore if the red marbles represent that a battery dies before 15 hours then the probability of picking the red marble should be 1/3. That is if there is only one red marble in the bag, the probability of picking the red will be 1/3 when there are other 2 green batteries in the bag

That is there should be 1 red marble and 2 green marble in the bag.

Step-by-step explanation:

Answer:

1. 255m 2. 172m

Step-by-step explanation:

1. 200+55=255m

2. 227-55=172m

Answer:

B: 1/6

Step-by-step explanation:

make 1/4 to 3/12. 7/12 + 3/12 is 10/12. So the green is 2/12. 2/12 simplified is 1/6.

Answer:

B

Step-by-step explanation:

7/12=53%

1/4=25%

the remaining would be 16 % ad 1/6 is 16%

Answer:

1 ml = 0.001 litres

5400 ml = 5.4 litres

Answer:

5

Explanation:

5 squared is 25. 25 times 2 is 50. 50 minus 3 is 47.

Answer:

1. Not similar

2. Similar, ABC is similar to FED by SSS

Step-by-step explanation:

1. Not similar.

The interior angles of a triangle always have to add up to 180, and since the first triangle has angles 30 degrees and 90 degrees, you know the third angle will have to be 180 - 30 - 90 = 60 degrees.

The second triangle's third angle will have to be 50 degrees because 180 - 90 - 40 = 50 degrees.

Since the three angles of the triangle are not the same, they are not similar.

2. Similar, ABC is similar to FED by the SSS triangle similarity postulate.

First, AB is similar to FE because AB = 15 and FE = 5, so the scale factor is 3

Next, BC is similar to ED because BC = 9 and ED = 3, so the scale factor for these sides is also 3

Lastly, CA is similar to DF because CA = 12 and DF = 4, so the scal factor for this is also 3.

Since the scale factor for all of the sides is 3, these two triangles are similar.

Answer:

1/20

Step-by-step explanation:

[tex] \frac{3}{4} \div \frac{15}{1} \\ \frac{3}{4} \times \frac{1}{15} \\ \frac{3}{60} = \frac{1}{20} [/tex]

Answer:

1/20

Step-by-step explanation: