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Nitella [24]
3 years ago
9

Find the value of  x so that f(x)=7

Mathematics
1 answer:
Lesechka [4]3 years ago
6 0
Check:   Is  f(8) = 7    ?       2(8) - 9 = 7   ?        16 - 9 = 7   ?            7 = 7   ?yes
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Using this formula l=A 1/2 what is the length of one side of a square with an area of 1,936 square kilometers? (A is the area of
Vera_Pavlovna [14]

<u>c.)44 kilometers</u>

Answer:

Solution given:

let

length =L

and

Area =A

Now

we have

Area [A]=1936 square kilometers

now

As we know that

Area of square :length *length

A=l*l

A=l²

Substituting value of A

1936=l²

doing square root on both side

\sqrt{1936}=\sqrt{l²}

we get

l=\sqrt{2*2*2*2*11*11}

l=2*2*11

l=44 kilometers

So

<u>the length of one side of a </u><u>square</u><u> </u><u>is</u><u> </u><u>4</u><u>4</u><u> </u><u>kilometers</u><u>.</u><u />

6 0
3 years ago
HELP!! Which of these linear equations best describes the given model?
viktelen [127]

Option B:

The linear equation that best describes the model is y = 40x + 800.

Solution:

Take two points which exactly on the line.

Let the points are (0, 800) and (10, 1200).

x_1=0, y_1=800, x_2=10, y_2=1200

Slope of the line:

$m=\frac{y_2-y_1}{x_2-x_1}

$m=\frac{1200-800}{10-0}

$m=\frac{400}{10}

m = 40

y-intercept of the line is where the line crosses at y-axis.

y-intercept (b) = 800

Equation of a line:

y = mx + b

y = 40x + 800

The linear equation that best describes the model is y = 40x + 800.

Option B is the correct answer.

4 0
3 years ago
What is the product of....<br><br> (0.061)•(0.43)=
dem82 [27]
The product is 0.02623
6 0
3 years ago
Im A All A+ Student How about you? Being Brainlist would be nice
raketka [301]

Answer:

you know it would be nice

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
draw the line which will represent the graph of the equation y-2.5x=c if it's known it passes through the point K(2, -3)
Oksi-84 [34.3K]

The line will represent the graph of the equation y=2.5x-8.

The two points necessary to graph would be (2,-3) and (0,-8).

<h3>What is the slope-intercept form?</h3>

The slope-intercept form is y=mx+c

If the line passes through (2,-3),

let us plugin and find c.

So we get,

-3-2.5(2)=c

-3-5=c

c=-8

So, The equation of the line is y=2.5x-8.

To learn more about the equation visit:

brainly.com/question/2972832

8 0
2 years ago
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