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4 years ago

What is the value of 2x3squared +x2squared when x = 3

Mathematics

1 answer:

irina [24]4 years ago

6 0

I suspect this is what you mean, if let me know
2x(3)^2+x(2)^2
2(3)(9)+3(4)
54+12=66

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Connor have five times as much money as jayden. Cannor gave some money to jayden. Now they have £8.50 what amount of money jayde

valkas [14]

Answer:

Cornor has $14.17 initially

Step-by-step explanation:

The complete question is as follows

Connor has five times as much money as Jayden. Connor gives some money to Jayden. They now have £8.520each. How much did Connor have at the start?

solution

In this question, we are concerned with knowing how much that both had initially.

Let the amount of money Jayden has be £x . Since Cornor has Five times this, he has £5x

Let the amount of money Cornor gave Jayden be £y.

This means ;

5x - y = 8.50 .....(

(i)and also x + y = 8.50 ......(ii)

It is this equations we solve simultaneously

From i, we can say let y= 5x - 8.50, and we insert this into equation ii

x + 5x - 8.50 = 8.50

6x = 17

x = 17/6

x = $2.83

y = 5x - 8.50

y = 5(2.83) - 8.50

y = $5.67

The amount of money Cornor has at first is 5x = 5(17/6)

5x = $14.17

5 0

3 years ago

HHHHHEEEEELLLLLPPPPPP

sp2606 [1]

The length of an arc is given by θ/360×2πr, where θ is angle subtended by the arc to the center and r is the radius of the circle.
The length is 12 units, and θ/360 is 1/3
Therefore, 12 = 1/3 × 3.142 ×r
r = 12× 3/3.142
r = 11.457 units
≈ 11 units

5 0

4 years ago

Help show work pleaeee

Inga [223]

SA = 2 $\pi rh$ +2 $\pi$ $r^2$

1. Find the radius.

R = 1/2D

6 x 1/2 = 3

R = 3

2. Plug them in.

SA 2(3.14)(3)(7) + 2(3.14)(3^2)

3. Solve

3 x 7 = 21

21 x 3.14 = 65.94

65.94 x 2 = 131. 88

3^2 = 9

9 x 3.14 = 28.26

28.26 x 2 = 56.52

4. Add them together.

131.88 + 56.52 = 188.4

Answer: 188.4 square millimeters

7 0

3 years ago

Read 2 more answers

Find the equation of a line perpendicular to y - 12 = 2x – 8 that passes through the point (2, 3). (answer in slope-intercept fo

Alla [95]

Answer:

$\displaystyle y=-\frac{1}{2}x+4$

Step-by-step explanation:

<u>Equation of a Line</u>

We can find the equation of a line by using two sets of data. It can be a pair of ordered pairs, or the slope and a point, or the slope and the y-intercept, or many other combinations of appropriate data.

We are given a line

$y - 12 = 2x -8$