Help please , will mark

Answers:

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Explanation:

Match up (7x+3)(7x-3) with (a+b)(a-b)

We have

We can see that a = 7x and b = 3

Furthermore, we can say,

(a+b)(a-b) = a^2 - b^2

(7x+3)(7x-3) = (7x)^2 - (3)^2

(7x+3)(7x-3) = 49x^2 - 9

The values of a and b are 7x and 3 respectively

(7x+3) (7x−3)

Using the format

(a + b)(a − b) = a² − b²

Therefore,

a = 7x

b = 3

Therefore,

From (a + b)(a − b) = a² − b²

(7x+3) (7x−3) = (7x)² - 3²

(7x+3) (7x−3) = 49x² - 9

learn more on factorisation here: https://brainly.com/question/22190900

Step-by-step explanation:

Answer and Step-by-step explanation:

The answer is A.

y = x + 2 and y = -2x + 4

This is because:

- The graph going from left to right matches the first equation, in which the graph has a slope of 1 and has a y-intercept at (0, 2).

- The graph going from right to left matches the second equation, in which the graph has a slope of -2 (Since it is going from right to left), and has a y-intercept at (0, 4).

#teamtrees #PAW (Plant And Water)

Answer:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Trust me & Hope I helped!

GL :)

Answer:

D

Step-by-step explanation:

you need to divide by 2. And you need to simplify a fraction.

Answer:

6/2

Step-by-step explanation:

6 divided by 2 =3

Answer:

I will be 6/3

Step-by-step explanation:

If you divide the 6/3 it will be 3/1

Make sure to divide it by 3

Step-by-step explanation:

you will have 100% * 60 = X * 80 so X = 100% * 60/ 80

Answer:

75

Step-by-step explanation:

The answer is attached. I hope you are able to understand and it helps you. If you have doubt you can ask, I will repost the answer with proper explanation.

Answer:

x=5

Step-by-step explanation:

First off, you need to subtract 67 from 17 to get the variable alone.

That will leave you with -10x=-50

Then you need to divide -10 and -50,

Two negatives make a positive so

x=5

Answer is C

Answer:

7:10

Step-by-step explanation:

Answer:

4/1

Step-by-step explanation:

Answer:

27 + 10d

Step-by-step explanation:

Answer:

10d+27

Step-by-step explanation:

Rearrange terms

3

(

9

+

2

)

+

4

3

(

2

+

9

)

+

4

2

Distribute

3

(

2

+

9

)

+

4

6

+

2

7

+

4

3

Combine like terms

6

+

2

7

+

4

1

0

+

2

7

Answer:

We have the value as;

8x/5

Step-by-step explanation:

Here, we want to get the breakdown of the given expression

We have (x^2 - 9) as (x-3)(x + 3)

So we have;

2x/(x + 3) * (x-3)(x+3)/5 * 4/(x-3)

= 2x * 4/5= 8x/5

Answer:

y - 2x = 3

Step-by-step explanation:

Use the point-slope formula y - k = m(x - h), with h = 0, k = 3 and m = 2:

y - 3 = 2(x - 0), or

y - 3 = 2x, or

y - 2x = 3

Note that the given point, (0, 3), is the y-intercept of this line, and so we immediately know b in y = mx + b:  it is 3.

Answer:

C. [tex] 302 \: {cm}^{2} [/tex]

Step-by-step explanation:

[tex]Area \: of \: sector = \frac{ \theta}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 \degree}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 }{360 } \times 3.14 \times {(16)}^{2} \\ \\ = \frac{108,518.4 }{360 } \\ \\ = 301.44 \\ \\Area \: of \: sector \approx \: 302 \: {cm}^{2} [/tex]

Answer:

x = 20

Step-by-step explanation:

ok so we know that one angle equals 90 degrees

90

x

2x

90 = x + 2x

90 = 3x

90 / 3 = 20

3x / 3 = x

20 = x

Answer:

57.4

Step-by-step explanation:

Answer:

A and C

Step-by-step explanation:

Answer:

85 m

Step-by-step explanation:

Answer:

85

Step-by-step explanation:

Answer:

f(1) = 4

Step-by-step explanation:

f(1)  means let x=1 and find the y value at that point on the graph

At x=1 there is an open circle and a closed circle.  The open circle means that the function does not have a value at that point, so we use the closed circle

f(1) = 4

Answer:

hi the answer is 29

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

Answer:

I apologise, my device only allows me to see the first screenshot.

A: The general trend is an increase through the graph.

B: The median of the data is 5.

C. The mean of the data is 4.7

D. The median would not be affected, but the mean would increase.

Step-by-step explanation:

Answer:72.25

Step-by-step explanation:

Answer:

The researcher can be 90% confident that the interval from 0.626 to 0.658 captures the true proportion of all drivers who use “drive mode.”

Step-by-step explanation:

edge2021

Answer:

3.62

Step-by-step explanation:

Cash or store credit

Answer:3.62

Step-by-step explanation:

Answer:

It's 38.1

Step-by-step explanation:

I'm not the best at explaining these type of things but I hope this helps you out

Answer:

B

Step-by-step explanation:

The only diagram representing a function is B.

All the others fail rhe vertical line test. Each of the x values should have one y value assigned.

Answer:

C

Step-by-step explanation:

exponential functions multiply

Answer:

162 ft^3

Step-by-step explanation:

volume = area of base * height

V = 22 1/2 ft^2 * 7 1/5 ft

Change the mixed numerals into fractions.

V = 45/2 ft^2 * 36/5 ft

Multiply the fractions.

V = 45/2 * 36/5 ft^3

Switch the denominators.

V = 45/5 * 36/2 ft^3

Simplify each fraction.

V = 9 * 18 ft^3

V = 162 ft^3

Answer:

[tex](-6, 0)[/tex]

[tex](0, -2.3)[/tex]

[tex](0,\frac{3}{4})[/tex]

Step-by-step explanation:

Solving (1). x-intercept: -6

At x intercept, [tex]y= 0[/tex]

So, the ordered pair is: [tex](-6, 0)[/tex]

Solving (2):  y-intercept: -2.3

At y intercept, [tex]x = 0[/tex]

So, the ordered pair is: [tex](0, -2.3)[/tex]

Solving (3): y-intercept: 3/4

At y intercept, [tex]x = 0[/tex]

So, the ordered pair is: [tex](0,\frac{3}{4})[/tex]

Answer:

5.56 m

Step-by-step explanation:

Circumference = 2πr

r is the radius, however the diameter is given. The radius is half the diameter. So the radius is:

1.8 ÷ 2 = 0.9

Circumference = 2 × π × 0.9

= 5.56 m ( in 3 significant figures )