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kodGreya [7K]
2 years ago
11

Question 1 of 10

Mathematics
2 answers:
AveGali [126]2 years ago
8 0

Answer:

Option C

(4x + 5)(4x +5)

Step-by-step explanation:

Step 1: Write the expression

16x^{2}  + 40x + 25

Step 2: Choose to integers that when you add you get 40 and when multiplied you get 400

The integers are +20 and +20

Step 2: Split 40x into + 20x nd + 20 x

Therefore

16x^{2}  + 40x + 25 = 16x^{2}  + 20x + 20x + 25

Next

16x^{2}  + 20x + 20x + 25 = 4x(4x + 5) + 5(4x + 5)\\(4x + 5)(4x + 5)

yulyashka [42]2 years ago
5 0

the answer is C

C. (4x + 5)(4x + 5)

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My teacher never explained how to do this so can someone help me?
Natalka [10]

Answer:

75cm^2

Step-by-step explanation:

When you say a rectangular prism, it means it has the base has 4 sides of which opposite sides are equal as a rectangle. This sides substends so we have a total of 6 surfaces in this prism.

This 6 surfaces has 3 surface area the same.

The surface area = sum of area of all faces.

325= 50 + 50 + 37.5 + 37.5 + 2x; where X is the area of the surface unknown.

325= 100+ 75 + 2x

325-175= 150

150= 2x

X= 150/ 2 = 75 cm^2

6 0
3 years ago
The total surface area of a cuboid is 112cm^2. find the value of x. values given: 10cm and 2cm.
Tatiana [17]

Answer:

x= 5.6

Step-by-step explanation:

we will need to put the information we currently have into an equation:

10•2•x= 112

then multiply 10•2 which equals 20...then the equation wil turn out like this:

20•x=112

now you will isolate the x... but how?? dividing 20 by itslef.. cancelling it out, and if you do one thing to the other side of the equation, you have to do it to the other...

20/20•x=112/20

you will end up with x= 122/20

you can use a calculator for this step, but  to practice long division... (check the screen shot thingie)

hope this helped !! ^^

6 0
3 years ago
Guysss Pleaseee helppp​
Slav-nsk [51]

Answer:

600 cm^2

Step-by-step explanation:

The side length of one of the faces is 10 cm

The length of a side is generally noted as s.

In this problem s = 10

Area of a cube face = s^2

So the area of one face of a cube = s^2 = 10^2 = 10*10 = 100

There are 6 faces on a cube.

Area = 6 * 100 = 600

7 0
3 years ago
Help I don’t get it at all
Naily [24]
The answer to your question is n is equal to 70
5 0
3 years ago
Read 2 more answers
Which is the graph of y = 1/x?
irina1246 [14]

<u>answer:</u> the first graph

<u>explanation:</u>

it would not be the second one because it is a slope (y = mx + b) and so would be the third choice.

i don't think it would be the last one because it's going only up to 40. which the equation say only y = 1/x and it's not a big number equation.

hope this helps! ❤  from peachimin

i attached this image which is sorta similar to the the to this equation:

6 0
2 years ago
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