All categories

4 years ago

Multiple questions PLS HELP

2 answers:

3 0

The real zeros of a function are when the function touches or crosses the x-axis. In terms of the following linear functions, the real zeros will be the value of x when y = 0. So we simply set each equation equal to zero and solve for the x-values.

1.) y = -5x - 7
0 = -5x - 7
5x = -7
x = -7/5

The real zero is at point (-7/5, 0) and is therefore option d) -7/5.

2.) y = -7x + 3
0 = -7x + 3
7x = 3
x = 3/7

The real zero is at point (3/7, 0) and is option b.) 3/7.

3.) y = -7x + 8
0 = -7x + 8
7x = 8
x = 8/7

The real zero is at point (8/7, 0) and is option a.) 8/7.

4.) y = 3x + 1
0 = 3x + 1
-3x = 1
x = -1/3

The real zero is at point (-1/3, 0) and is option b.) -1/3.

german4 years ago

3 0

Answer:

b. - 1/3

Step-by-step explanation:

You might be interested in

Question 26 pleaseee

LuckyWell [14K]

Answer:

The inequality is $55+10x\leq 105$

The greatest length of time Jeremy can rent the jet ski is 5 and Jeremy can rent maximum of 135 minutes.

Step-by-step explanation:

Given: Cost of first hour rent of jet ski is $55

Cost of each additional 15 minutes of jet ski is $10

Jeremy can spend no more than $105

Assuming the number of additional 15-minutes increment be "x"

Jeremy´s total spending would be first hour rental fees and additional charges for each 15-minutes of jet ski.

Lets put up an expression for total spending of Jeremy.

$\$55+ \$ 10\times x$

We also know that Jeremy can not spend more than $105

∴ Putting up the total spending of Jeremy in an inequality.

$\$ 55+\$10x\leq \$ 105$

Now solving the inequality to find the greatest number of time Jeremy can rent the jet ski,

⇒ $\$ 55+\$10x\leq \$105$

Subtracting both side by 55

⇒ $\$ 10x\leq \$50$

Dividing both side by 10

⇒ $x\leq \frac{50}{10}$

∴ $x\leq 5$

Therefore, Jeremy can rent for $60\ minutes + 5\times 15\\= 60\ minutes + 75= 135\ minutes$

Jeremy can rent maximum of 135 minutes.

5 0

3 years ago

Which expression would correctly calculate the sale price of an item marked 15% off an original price of $63.95?

Katarina [22]

The Answer Would Be C

3 0

3 years ago

Read 2 more answers

What’s the area of a rectangle measuring 13in tim12 in ?

Evgesh-ka [11]

Answer:

156 sq in

Step-by-step explanation:

If you have a rectangle measuring 13 inches by 12 inches, you will consider the side with 13 inches as the length of the rectangle and the one with 12 inches as the width of the rectangle.

The area of a rectangle is obtained by multiplying the length by the width... so, you'll get:

A = 13 in x 12 in = 156 square inches

4 0

3 years ago

Write a rational number in fraction form that is equivalent to -1.\overline{5}

lorasvet [3.4K]

Answer:

$\dfrac{-14}{9}$ .

Step-by-step explanation:

The given number is $-1.\overline{5}$ .

We need to find a rational number in fraction form that is equivalent to given number.

Let $x=-1.\overline{5}$

$x=-1.555...$ ...(1)

Multiply both sides by 10.

$10x=-15.555...$ ...(2)

Subtracting (1) from (2), we get

$10x-x=-15.555...-(-1.555...)$

$9x=-14$

Divide both sides by 9.

$x=\dfrac{-14}{9}$

Therefore, the required rational number is $\dfrac{-14}{9}$ .

4 0

3 years ago

A circle has its center at the origin, and (5, -12) is a point on the circle. How long is the radius of the circle?

Amanda [17]

Option C

The radius of circle is 13 units

Solution:

The equation of circle is given by formula:

$(x-h)^2+(y-k)^2 = r^2$

Where, the center being at the point (h, k) and the radius being "r"

Given that circle has its center at the origin

(h, k) = (0, 0)

(5, -12) is a point on the circle

(x, y) = (5, 12)

Substituting in equation we get,

$(5-0)^2+(12-0)^2 = r^2\\\\5^2+12^2 = r^2\\\\r^2 = 5^2+12^2\\\\r^2 = 25 + 144\\\\r^2 = 169\\\\Taking\ square\ root\ on\ both\ sides\\\\r = \sqrt{169}\\\\r = \pm 13\\\\Since\ radius\ cannot\ be\ negative\ ignore\ r = -13\\\\Thus\ the\ solution\ is:\\\\ \r = 13$

Thus radius of circle is 13 units

4 0

4 years ago