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Irina18 [472]
3 years ago
7

Jamie is trying to work out the surface area of the cuboid below. Spot any mistakes and write the correct answer.

Mathematics
1 answer:
umka21 [38]3 years ago
7 0

Step-by-step explanation:

The dimensions of the cuboid are 5 cm, 7 cm and 9 cm.

The formula for the surface area of the cuboid is as follows :

A=2(lb+bh+hl)

We have,

b = 9 cm, l = 7 cm and h = 5 cm

So,

A=2(9\times 7+9\times 5+7\times 5)\\\\A=2\times 143\\\\A=286\ cm^2

Jamie forgets to multiply 143 by 2 as the formula for surface area contains 2 as well.

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saveliy_v [14]
Here,

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5 0
4 years ago
Elimination method. -2y = 0.5 - 2x<br> 6х + Зу = 6
AysviL [449]

Answer:

y=-1.5

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Step-by-step explanation:

Yuh arrange the equations in order for easy subtracting of the equations.

-2y=0.5-2x. divide both sides by 2 to get y=-x-0.25.

6x+3y=6

3y=-6x+6 then divide both sides by three to get y

y=-2x+2

now arrange

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8 0
3 years ago
If 4^2x+1 = 4, then =
Aneli [31]

Step-by-step explanation:

step 1. what is the question? probably solve for x. okay.

step 2. 4^(2x) + 1 = 4

step 3. 4^(2x) = 3 subtract 1 from each side

step 4. ln4^(2x) = ln3 take on of each side

step 5. 2xln4 = ln3 definition of logs

step 6. 2x = ln3/ln4 divide both sides by ln4

step 7. x = ln3/2ln2^2 divide both side by 2 and replace 4 with 2^2

step 8. x = ln3/4ln2.

4 0
3 years ago
What is the property of (2x)y=2(xy) ?
RSB [31]

2(xy) = (2x)y is an associative property of multiplication. This answer has been confirmed as correct and helpful.

7 0
3 years ago
The equation of a circle is (x - 4)2 + (y - 4)2 = 9. The point (4, 1) is on the circle.
Alika [10]

Answer:

4

Step-by-step explanation:

the answer is 4 hope it helps

3 0
2 years ago
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