Find the length of DF

Answer:

I think this is what you want:

Step-by-step explanation:

Answer:

After 6 seconds, the ball will hit the ground.

Step-by-step explanation:

f(x)=-x^2 + 4x + 12

Since we want to see when it touches the ground, the height must be equal to 0, so f(x) has to equal 0.

0=-x^2 + 4x + 12

If you factor this equation, you'd get:

(-x + 6)(x + 2) = 0

We get the 2 and the 6 from the factors of 12. The two factors of 12 have to be able to add or subtract into 4, and in this case, 6-2 is 4. (If you multiply this equation out, you'd get the same one you started with)

Since we need it to equal 0, the way to multiple to 0 is to have a zero itself. This means that either (-x+6) is equal to 0 or (x+2) is equal to 0. The only x values that satisfy this is 6 and -2. You can't have -2 seconds after, so it has to be 6.

Hope that helps.

Answer:

id say D

Step-by-step explanation:

There are 4 people who only like apples, and 6 people who do not like any fruit.

Since in a survey of 80 people it was found that 60 liked oranges only and 10 liked both oranges and apples, and the number of people who liked oranges is five times the number of people who liked apples, to determine the number of people who liked apples only and the number of people who didn't like any of these fruits, the following calculations must be performed:

First, the number of people who like apples must be determined, knowing that it is 5 times less than the number of people who like oranges.

Thus, 14 people like apples, of which 10 of them also like oranges. So there are 4 people who only prefer apples, added to 60 people who prefer oranges and 10 who like both fruits. This gives a total of 74 people, which implies that 6 people do not like any fruit.

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Answer:

1

Step-by-step explanation:

Answer:

5 x − 1 − 3 x y − c

The solution to the expression (5x-1)-(3xy+c) would be 5x - 1 - 3xy - c.

A linear equation is an equation in which the highest power of the variable is always 1. The standard form of a linear equation in one variable is of the form Ax + B = 0.

The given expression is (5x-1)-(3xy+c)

The subtraction between them is

5x - 1 - 3xy - c

Thus, the subtraction would be 5x - 1 - 3xy - c.

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Answer:

6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,...

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

i Substituted the value ofthe variable into the equation and simplified it.

Answer

D or the fourth one because i took the quiz and got it right

Answer:

2

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

In order for the dilated image to become larger, it has to have a scale factor that is more than one not less than one.

False, Because If the scale factor is greater than 1, the image is larger than the preimage.

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We know that;

If the scale factor is between 0 and 1, the image is smaller than the preimage. Dilations with a scale factor between 0 and 1 are called reductions.

And, If the scale factor is greater than 1, the image is larger than the preimage. Dilations with a scale factor greater than 1 are called enlargements.

Thus, The given statement is false.

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$3828.85 is in the account at the end of 5 years which is correct option(B).

What is Compound interest?

Compound interest is defined as interest paid on the original principal and the interest earn on interest of principal.

p = $3000

r = 5%

t = 5 years

[tex]A = p(1+\frac{r}{100} )^t[/tex]

substitue the values of p,r and t in formula,

[tex]A = 3000(1+\frac{5}{100} )^5[/tex]

[tex]A = 3000(1+0.05} )^5[/tex]

[tex]A = 3000(1.05} )^5[/tex]

A = 3000(1.276)

A = 3828.85

Hence, $3828.85 is in the account at the end of 5 years.

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Answer:

Step-by-step explanation:

There are a couple of factored forms that are used here:

  (a +b)² = a² +2ab +b² . . . . the sign of "2ab" will match the sign of b

  a² -b² = (a -b)(a +b)

__

Part A:

 Since this trinomial is known to be a perfect square, you can find the binomial(s) by looking at the roots of the first and last terms.

  √(4a²) = 2a

  √25 = 5

The factoring is ...

  4a² -20a +25 = (2a -5)²

__

Part B:

This is the difference of perfect squares, so the terms of the factors can be found as in the previous part.

  √(9a²) = 3a

  √(16b²) = 4b

Using the above factored form, we have ...

  9a² -16b² = (3a -4b)(3a +4b)

Answer:

A i think

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

......

Step-by-step explanation:

b)4kg:1600g

convert 4kg to grams

4000g:1600g

then divide

=5g:2g

then convert 5g into kg

=0.005kg:2g

f)5 days:5 weeks

multiply 5weeks by 7 u will get 35

5days :35dys then divide by 5

1:7days

=1 day:1 week

h)40 sec:1 min

40 sec:60 sec

then divide both of them by 2

2 sec:3 sec

then take 3 ÷60=0.05 min

=2 sec:0.05 min

Answer:

The answer is C

Step-by-step explanation:

because if you do Use the “greater than” symbol to show which denominator is larger. than you can see and find out which one is greater  

Answer:

A

Step-by-step explanation:

Whenever you square a real number, the result will always be positive, because even if you are squaring a negative number a negative times a negative is a positive. However, when you cube a negative number, the result CAN be negative, because you are multiplying a negative number by itself three times. Therefore, the answer is only A. Hope this helps!

Answer:

6.28 yards

Step-by-step explanation:

C=3.14(2 yards)

Answer:

6.28 is the answer

Answer:

D. 18x-0.08y

Step-by-step explanation:

He will make 18 monthly payments of x dollars on the total amount leftover after paying an 8% down payment. So his finance charge is payment minus down payment: 18x-0.08y

The expression correctly represents Adam's finance charge is

C. 18x-0.92y.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.

From, The given information,

8% of the downpayment is (8/100)×y = 0.08y and te total monthly payment is 18x.

Therefore,

The phrase that accurately describes Adam's finance charge is,

y = 0.08y + 18x.

y - 0.08y = 18x.

0.92y = 18x.

18x - 0.92y = 0.

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Answer:

2 1/4

Step-by-step explanation:

- 5 1/4- [-7 1/2]

Get a common denominator of 4

- 5 1/4- [-7 1/2*2/2]

- 5 1/4- [-7 2/4]

We know subtracting a negative is adding

- 5 1/4 + [7 2/4]

Rewriting

7 2/4 - 5 1/4

Subtract the whole numbers

7-5 =2

Subtract the fractions

2/4 -1/4 = 1/4

2 1/4

Answer:

2 ¼

Step-by-step explanation:

-5 ¼ - [-7 ½]

-5 ¼ + 7 ½

7½ - 5¼

(7-5) + (½-¼)

2 + ¼

2 ¼

Answer:

11/28

Step-by-step explanation:

1. Add up all of the customers to get the sample size.

    33 + 51 = 84

2. Since we are finding the chance of it being a size small, 33 will be out numerator.

3. Create the final fraction, (33/84)

4. Simplify (11/28)

Hope this helps! Comment if you have any questions. :)

Answer:

11/28

Step-by-step explanation:

First, you add 33 and 51 to get a total of 84 customers. Then you put the number of selections you want (33) as the numerator to 84, to get 33/84. Finally you simplify and get the probability of selecting a customer at random. Answer= 11/28 is your probability

Answer:

3 in.

Step-by-step explanation:

Answer: x = 14 for the first one, x = 4 for the second

Step-by-step explanation:

8x - 9 = 7x + 5

subtract 7x from both sides

x - 9 = 5

add 9 to both sides

x = 14

8x + 9 = 3x + 29

subtract 3x from both sides

5x + 9 = 29

subtract 9 from both sides

5x = 20

divide both sides by 5

x = 4

Answer:

4(2y + 9)

Step-by-step explanation:

divide by 4.

Answer: 19.21

Step-by-step explanation:

12^2 + b^2 = 15^2

subtract 12^2 from both sides

b^2 = 15^2 - 12^2

b^2 = 81

b = 9

credit to melissanix90 for helping

Hope this helps :)

Answer:

1/6 of 48 is 8

1/10 of 40 is 4

3/4 of 24 is 18

2/5 of £65 is £26

7/10 of £96 is £67.2.

Step-by-step explanation:

I did the math.

Answer:

the answer of the expression is 190

Step-by-step explanation:

Given expression as :

20 % of 950

Or, [tex]\frac{20}{100}[/tex] times 950

Or, [tex]\frac{20}{100}[/tex] × 950

Or, 20 × [tex]\frac{950}{100}[/tex]

or, 20 × 9.5

∴ 190

Answer:

1/5 times 950

Step-by-step explanation:

I did this on iready and got it correct

Answer:

4

Step-by-step explanation:

3x^2 + 2(y-1)/x+y^2

3(4)^2 + 2(3-1)/4+3^2

3x16+2x2/4+9

48+4/13

52/13

4