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3 years ago

What’s the value of k?

Mathematics

1 answer:

julia-pushkina [17]3 years ago

5 0

First of you need to find the formula for them and them equal it to eachother. Then solve for k. So try and find the slope and then the y int for g(x) is 20 and the y int for f(x) is 4 just find the slope and you should be fine

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The side of a triangles are 8cm,12cm,17cm.find its perimeter and its are by using herons formula

Novay_Z [31]

Answer:

see explanation

Step-by-step explanation:

The perimeter is the sum of the 3 sides, that is

perimeter = 8 + 12 + 17 = 37 cm

To use Heron's formula for area (A)

A = $\sqrt{s(s-a)(s-b)(s-c)}$

where a, b and c are the lengths of sides and s the semi perimeter

s = 37 ÷ 2 = 18.5

let a = 8, b = 12 and c = 17, then

A = $\sqrt{18.5(18.5-8)(18.5-12)(18.5-17)}$

= $\sqrt{18.5(10.5)(6.5)(1.5)}$

= $\sqrt{1893.9375}$ ≈ 43.52 cm² ( to 2 dec. places )

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3 years ago

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AfilCa [17]

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then find where it crosses the x-intercept to get

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3 years ago

8 is 1 tenth of what number

Elenna [48]

Answer:

Step-by-step explanation:

You can figure this out by creating an equation:

1/10 x=8 (This shows that 8 is 1/10 of number x)

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3 years ago

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What is the average rate of change for h(t) between t=0 and t=2

nordsb [41]

Part a: Option D 18 feet per second

Part b: increasing

Solution:

Height $h(t)=-16 t^{2}+50 t+3$

Part a: To find the average rate of change for h(t) between t = 0 and t = 2.

Substitute t = 0 in h(t).

$h(0)=-16 (0)^{2}+50 (0)+3$

h(0) = 3

Substitute t = 2 in h(t).

$h(2)=-16 (2)^{2}+50 (2)+3$

h(2) = 39

Average rate of change formula:

$$=\frac{h(b)-h(a)}{b-a}$

Here, a = 0 and b = 2.

$$=\frac{h(2)-h(0)}{2-0}$

$$=\frac{39-3}{2}$

$$=\frac{36}{2}$

= 18

Average rate of change = 18 feet per second

Option D is the correct answer.

Part b:

This means height of the ball is increasing for 0 < x < 2.

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3 years ago