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3 years ago

Vichy reads at a constant rate. She can read 5 pages

Mathematics

1 answer:

vagabundo [1.1K]3 years ago

7 0

Answer:

p = (5t)/9

Step-by-step explanation:

9 mins ---------- 5 pages

1 min -------------5/9 page

t mins ------------5/9 x t pages

Thus

p = (5t)/9

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the height of an object after t seconds is given by f(t)=-5t^2+20t (a) find the height of the object after 2 seconds, and includ

Leni [432]

Answer:

t=20 4=5 =6 =8 =9 10

Step-by-step explanation:

And that is iy

8 0

3 years ago

1. How do you define quadratic equations?

oksian1 [2.3K]

Answer:

$ax^{2} +bx+c^{2}=0$

Step-by-step explanation:

A quadratic equation is a equation that takes the form: $ax^{2} +bx+c^{2} = 0$

Ex. Using our definition of quadratic equations, $ax^{2} +bx+c^{2}=0$ ,

We can set a = 2, b = 1, c = 6:

$2x^{2} +x+6^{2}=0$

$2x^{2} +x+36=0$

Which can then be solved (if you are trying to solve it) as:

$(2x+9)(x-8)=0$

$x=\frac{9}{2}, 8$

6 0

3 years ago

Jane invested her savings in two investment funds. The amount she invested in Fund A was $6000 less than the amount she invested

Irina18 [472]

Answer:

Jane invested $37,000 in Fund B.

Step-by-step explanation:

Let;

IA = Amount invested in Fund A = $6,000

IB = Amount invested in Fund B = ?

PA = Amount of profit from Fund A = IA * 8% = $6,000 * 8% = $480

PB = Amount of profit from Fund B = IB * 2%

Therefore, we have:

Total profit = PA + PB = $1220 ........................ (1)

Substitute the relevant values into equation (1) and solve for IB, we have:

$480 + (IB * 2%) = $1220

IB * 2% = $1220 - $480

IB * 2% = 740

IB = 740 / 2%

IB = $37,000

Therefor, Jane invested $37,000 in Fund B.

4 0

3 years ago

Brainliest giveaway

Serjik [45]

Answer:

y = 2

Step-by-step explanation:

Since the y- coordinates of the ordered pairs are all 2

This indicates the line is horizontal with equation y = c

where c is the value of the y- coordinates the line passes through, then

y = 2 ← equation of line

5 0

3 years ago

if the area of a sector is 15pi square cm and the radius is 5cm find the measure of the central angle

GalinKa [24]

Given:

Area of a sector = $15\pi$

Radius = 5 cm

To find:

The central angle.

Solution:

The area of a sector is:

$A=\dfrac{1}{2}r^2\theta$

Where, r is the radius and $\theta$ is the central angle in radians.

Putting $A=15\pi, r=5$ in the above formula, we get

$15\pi=\dfrac{1}{2}(5)^2\theta$

Multiply both sides by 2.

$30\pi=25\theta$

Divide both sides by 25.

$\dfrac{30\pi}{25}=\theta$

$\dfrac{6\pi}{5}=\theta$

Therefore, the central angle in radians is $\theta=\dfrac{6\pi}{5}$ .

4 0

3 years ago