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3 years ago

14

Plz help me Jen can jump rope 80 times in 60 seconds. If she jumps at a constant ratio of seconds to jumps, how many jumps can s

he make in 15 seconds?

1 answer:

uysha [10]3 years ago

3 0

Answer:

The answer is 4

Step-by-step explanation:

You just divide 80 by 15.

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Solve for the values of x and y.

Tasya [4]

Answer:

We can’t solve for x and y

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

At the beginning of the season, MacDonald had to remove 5 orange trees from his farm. Each of the remaining trees produced 210 o

Rainbow [258]

he initial number of trees was 204.

<h3>How to find the initial number of trees?</h3>

The first step to finding the initial number of trees is to write an equation that represents the situation.

T is equal to the initial number of trees.
5 trees were removed = t - 5
Each tree produces 210 oranges = (t-5) (210)
The total of oranges is 41,780 = (t-5) (210)= 41,780

Solve the equation:

(t-5) (210)= 41,780
t-5= 41,780 / 210
t-5 = 198.95
t = 198.95 + 5
t = 203.9

This number can be rounded as 204.

Note: This question is incomplete; here is the missing section:

Find the initial number of trees.

Learn more about equation in: brainly.com/question/2263981

6 0

2 years ago

Plzzzzzzzzzzzzzzz<br><br>evaluate 4x(4+(2^6x2^-3))

Scilla [17]

11. Factoring and solving equations - A. Factor- 1. Factor 3x2 + 6x if possible. Look for monomial (single-term) factors first; 3 is a factor of both 3x2 and 6x and so is x . Factor them out to get 3x2 + 6x = 3(x2 + 2x1 = 3x(x+ 2) . 2. Factor x2 + x - 6 if possible. Here we have no common monomial factors. To get the x2 term we'll have the form (x +-)(x +-) . Since (x+A)(x+B) = x2 + (A+B)x + AB , we need two numbers A and B whose sum is 1 and whose product is -6 . Integer possibilities that will give a product of -6 are -6 and 1, 6 and -1, -3 and 2, 3 and -2. The only pair whose sum is 1 is (3 and -2) , so the factorization is x2 + x - 6 = (x+3)(x-2) . 3. Factor 4x2 - 3x - 10 if possible. Because of the 4x2 term the factored form wli be either (4x+A)(x +B) or (2x+A)(2x+B) . Because of the -10 the integer possibilities for the pair A, B are 10 and -1 , -10 and 1 , 5 and -2 . -5 and 2 , plus each of these in reversed order. Check the various possibilities by trial and error. It may help to write out the expansions (4x + A)(x+ B) = 4x2 + (4B+A)x + A8 1 trying to get -3 here (2x+A)(2x+B) = 4x2 + (2B+ 2A)x + AB Trial and error gives the factorization 4x2 - 3x - 10 - (4x+5)(x- 2) . 4. Difference of two squares. Since (A + B)(A - B) = - B~ , any expression of the form A' - B' can be factored. Note that A and B might be anything at all. Examples: 9x2 - 16 = (3x1' - 4' = (3x +4)(3x - 4) x2 - 29 = x2 - (my)* = (x+ JTy)(x- my)

8 0

3 years ago

Find the midpoint of the line joining A (3,5) and B(1,3)

MaRussiya [10]

Answer:

(-1 , -1)

Step-by-step explanation:

$x_1= 3 \\ y_1= 5 \\ x_2=1 \\ y_2= 3$

$midpoint \: = ( \frac{x_2 - x_1}{2} \: \frac{y_2 -y_1}{2} )$

$=( \frac{1 - 3}{2} \: \frac{3 - 5}{2} ) \\ = ( \frac{ - 2}{2} \: \frac{ - 2}{2} ) = \\ ( - 1 \: - 1)$

3 0

3 years ago

King Kong stands on the edge of the roof of a 62 foot high building. You poke your head out of a manhole and measure the angles

Oliga [24]

Answer:

46.55 feet (approx).

4.48 feet ( approx )

Step-by-step explanation:

Let x be distance manhole from the building. ( in feet ) and y be the height of the King Kong.

∵ The angles of elevation to the top of King Kong's head and to his feet are 55 degrees and 53.1 degrees respectively.

By the trigonometric ratio,

$\tan 53.1^{\circ}=\frac{62}{y}$

$\implies y =\frac{62}{\tan 53.1^{\circ}}\approx 46.55$

Thus, the distance of the manhole from the building would be 46.55 feet (approx).

Again by the trigonometric ratio,

$\tan 55^{\circ}=\frac{62+x}{46.55}$

$\tan 55^{\circ}\times 46.55=62 + x$

$66.48 = 62 + x$

$\implies x = 66.48 - 62 = 4.48$

Hence, King Kong is approximately 4.48 feet long.

7 0

3 years ago