Can someone explain just 17-28??

Answer:

Her work is incorrect because she has to round to two significant figures after she adds the numbers instead of rounding each individual one and then adding.

The ratio that correctly models the situations are:

1 to 3 - for every cup of water added to the mixture, there are three drops of food colouring added.

4 : 3 - for every 4 students wearing pants, there are 3 students wearing shorts.

12 : 3 - there 4 times as many boys as there are girls.

A ratio expresses the relationship between two numbers. It shows the number of times that one value is contained in another value. The sign used to represent ratios is :.

Please find attached the complete questions. To learn more about ratios, please check: https://brainly.com/question/25927869

Answer:

21 - 3 + 18 ÷ 6 = 21

7 x 9 - 3 x 4 + 10 = 61

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

all the details are in the attached picture.

Answer:

7.07 cm

Step-by-step explanation:

we know,

circumference = 2πr

so,

2 × 22/7 × r = 66

44r = 66×7 = 462

r = 462/44 = 1.5

therefore, radius of the circle is 1.5 cm.

now,

we know , area = πr²

so,

22/7 × (1.5)²

22/7 × 2.25

49.5/7

7.07 cm (approx)

therefore, area of the circle is 7.07 cm (approx.)

hope this answer helps you!

Answer:

ΔLNM is proved as isosceles triangle. Below for explanation.

Step-by-step explanation:

We know that:

Since AMBX is a square, AL must equal to BN because they are the extra lengths of the square. The lengths of the square are AM, MB, BX, XA.

This can tell us that the two sides of the triangle are equal. We also know that if 2 sides of a triangle are equal, it is classified as an isosceles triangle. Hence, ΔLNM is proved as an isosceles triangle.

Hoped this helped!

Answer:

ΔLNM is proved as isosceles triangle

Step-by-step explanation:

Answer:

360_(26+180+90) =64

Step-by-step explanation:

the measure of straight line is 180

and the sum of all angles is 360

Answer:

a=25

Step-by-step explanation:

Solve by subtracting 3 from both sides.

a/5=5

Multiply both sides by 5.

a=25

Answer:

Step-by-step explanation:

a/5+3=8

Subtract 3 from both sides:

a/5+3 -3=8 -3

a/5=5

Multiply both sides by 5:

5×a/5=5×5

a=25

Hope it helps!

False, The range for an exponential function does not include all real numbers but only real numbers greater than zero.

In mathematics, an exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

Given statement,

The range for an exponential function includes all real numbers.

By the definition,

Exponential functions have the general form y = f (x) = aˣ,

where a > 0, a≠1, and x is any real number.

The reason a > 0 is that if it is negative, the function is undefined for -1 < x < 1. Restricting a to positive values allows the function to have a domain of all real numbers.

Thus the range is all real numbers greater than zero.

Hence, The range for an exponential function includes all real numbers is False because it includes real numbers greater than zero.

Learn more about exponential function here:

https://brainly.com/question/15352175

#SPJ2

Answer:

9 batches

Step-by-step explanation:

(Found the full problem online)

1 batch : 4 liters of orange juice and 5 liters of soda water

How do we get from 4 and 5 to 36 and 45? For both we multiply by 9.

4 * 9 = 36

5 * 9 = 45

Therefore, they would be able to make 9 batches.

Hope this helps, please mark brainliest if possible :)

Answer:

4n - 13

Step-by-step explanation:

There's a +4 between each number in the sequence.

4n

The previous number before the first given (-9) is -13.

4n - 13

Answer:

i believe its 9822000 i added them then multiplied by 30

Step-by-step explanation:

dont delete please

Answer:

12:30 PM

Step-by-step explanation:

In 2 hours (8:30 AM and 10:30 AM) she filled half of the full pond.

So to fill the other half we double how long it has taken her to do the first half assuming she doesn't stop. Therefore, the answer will be 12:30 PM

MAKE SURE TO WRITE PM AS IT IS AT MIDDAY

Answer:

Hello, the pool will be full at 12:30 PM. 1200 gallons is half of the capacity of the pool (2400), and the pool was half full at 10:30 AM after being run since 8:30 AM - two hours. This means that the pool will only need two more hours to fill up, and it will be full at 12:30 in the afternoon.

Have a great day! - Mani :)

Answer:

The answer is $1.56

Step-by-step explanation:

12.48÷8 = 1.56

Answer:

Elena made 10 batches.

Step-by-step explanation:

1 batch uses 2/3 cup

Elena used 6 2/3 cup

The number of batches is the quotient of 6 2/3 and 2/3.

We need to divide 6 2/3 by 2/3. First, we convert 6 2/3 into a fraction.

6 2/3 ÷ 2/3 = 20/3 ÷ 2/3 = 20/3 × 3/2 = 10

Answer: Elena made 10 batches.

Answer:

10

Step-by-step explanation:

2/3 for 1 cup if he used 6 2/3 of sugar then its 10.

if you times 2/3 by 10 its 6.66 and 6.66 is 2/3

1/3=33

2/3=66

3/3=100

Answer:

97 1/5 cubed ft. or 97.2 cubed ft.

Step-by-step explanation:

7 1/5=7.2

4 1/5=4.5

3=3

7.2x4.5x3=97.2=97 1/2

Answer:

[tex]V = 97.2\ ft^3[/tex]

Step-by-step explanation:

Step 1:  Determine the volume

[tex]V = l * w * h[/tex]

[tex]V = 4.5\ ft * 3\ ft * 7.2\ ft[/tex]

[tex]V = 97.2\ ft^3[/tex]

Answer:  [tex]V = 97.2\ ft^3[/tex]

Answer:

The Answer is A and B

Step-by-step explanation:

Because out of all the answers these are

the most suitable ones

(Pls Mark as brainliest (: )

Answer:

B. False

Step-by-step explanation:

(7-1) + 8 = 7 - (1 + 8) is not true.

Parenthesis

Exponents

Multiply

Divide

Add

Subtract

In this case, we only need parenthesis and addition.

(7-1)+8

(6)+8

14

7-(1+8)

7-(9)

-2

14=-2 is not true.

Hope this helps :)

Answer:

10/27

Step-by-step explanation:

5/6 * 4/9 = 20/ 54 = 10/27

Answer:

5+5+5+11+7+7+16=56

Let the number be x

Now we have a equation,

X÷2=260

x=260×2

x=520

Hence, the number you started with was 520.

Answer:

D. x = 8

Explanation:

Triangle ACD is an enlarged triangle of Triangle ABE

so an equation can be formed to solve this:

[tex]\frac{3x}{30}[/tex] = [tex]\frac{48}{30+30}[/tex]

[tex]\frac{3x}{30}[/tex] = [tex]\frac{48}{60}[/tex]

3x * 60 = 48 * 30

180x = 1440

x = 1440 ÷ 180

x = 8

Triangle ACD is an enlarged triangle of Triangle ABE

so an equation can be formed to solve this:

[tex]\frac{3x}{30} = \frac{48}{30 + 30} [/tex]

[tex] \frac{3x}{30} = \frac{48}{60} [/tex]

[tex] \frac{3x}{60} = \frac{48}{30} [/tex]

[tex]180x = 1440[/tex]

[tex]x = \frac{1440}{180} [/tex]

[tex]x = 8[/tex]

Answer:

Ben can type 153 words in 3 minutes.

Ben can type 153/3 words in 1 minute.

Ben can type 153/3 x 10 words in 10 minutes

                      =510words

Step-by-step explanation:

Hence, Ben can type 510 words in 10 minutes.

Answer:

15j^2k^2+10jk^2

Step-by-step explanation:

You distribute the term 5jk to the terms inside parentheses.

5jk(3jk) = 15j^2k^2

5jk(2k) = 10jk^2

Now put in original form:
15j^2k^2+10jk^2

Answer:

A. Kaitlyn uses more cups of flour per cookie.

Step-by-step explanation:

Kaitlyn's

[tex]2\frac{1}{2}[/tex] cups of flour---> [tex]3\frac{1}{2}[/tex] cookies

1 cups of flour--> [tex]3\frac{1}{2}[/tex] / [tex]2\frac{1}{2}[/tex] = 1.4 cookies.

Megan's

[tex]1\frac{3}{4}[/tex] cups of flour---> [tex]2\frac{11}{12}[/tex]

1 cups of flour---> [tex]2\frac{11}{12} / 1\frac{3}{4}[/tex] = 1.67 cookies

Therefore, Kaitlyn uses more cups of flour per cookie.

Answer: I think its BC and DC I dont know But I hope this helps!

Step-by-step explanation:

Answer:

∠ACB ≅ ∠ACD

Step-by-step explanation:

The SAS Postulate tells us:

If two sides and the included angle of a triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.

(Congruent = exactly the same)

(included angle is formed by the two known sides)

In this example we can see that 2 sides are congruent (by the dashes on the lines and the fact that both triangles share side AC), but we do not know if the included angles are congruent.

Therefore, we need to know if ∠ACB ≅ ∠ACD