All categories

2 years ago

Correct answer gets brainest! Question in picture

Mathematics

1 answer:

julsineya [31]2 years ago

8 0

Answer:

The answer is 7.

Step-by-step explanation:

When two letters in an equation are put together that means you must multiply them. So 5×3=15. y=8 so you subtract 15-8=7.

You might be interested in

A. equals 2 B. does not exist C. equals 0 D. equals 1

insens350 [35]

The limit of f(x) as x goes to 2 is given by:

C. 0.

<h3>What is a limit?</h3>

A limit is given by the value of function f(x) as x tends to a value a, that is, we have to look to the left of x = a and to the right of x = a, and if these values are equal, this is the limit of the function.

In this problem, we have that:

To the left of x = 2, f(x) approaches 0.

To the right of x = 2, f(x) approaches 0.

Since the lateral limits are equal, the limit of the function as x approaches 2 is of 0 and option C is correct.

More can be learned about limits at brainly.com/question/26270080

#SPJ1

6 0

1 year ago

Graph the function y = 2x3 – x2 – 4x + 5. To the nearest tenth, over which interval is the function decreasing?

daser333 [38]

As you progress in math, it will become increasingly important that you know how to express exponentiation properly.

y = 2x3 – x2 – 4x + 5 should be written y = 2^x3 – x^2 – 4^x + 5. The
" ^ " symbol denotes exponentiation.

I see you're apparently in middle school. Is that so? If so, are you taking calculus already? If so, nice!

Case 1: You do not yet know calculus and have not differentiated or found critical values. Sketch the function y = 2x^3 – x^2 – 4^x + 5, including the y-intercept at (0,5). Can you identify the intervals on which the graph appears to be increasing and those on which it appears to be decreasing?

Case 2: You do know differentiation, critical values and the first derivative test. Differentiate y = 2x^3 – x^2 – 4^x + 5 and set the derivative = to 0:

dy/dx = 6x^2 - 2x - 4 = 0. Reduce this by dividing all terms by 2:

dy/dx = 3x^2 - x - 2 = 0 I used synthetic div. to determine that one root is x = 2/3. Try it yourself. This leaves the coefficients of the other factor, (3x+3); this other factor is x = 3/(-3) = -1. Again, you should check this.

Now we have 2 roots: -1 and 2/3

Draw a number line. Locate the origin (0,0). Plot the points (-1, 0) and (2/3, 0). This subdivides the number line into 3 subintervals:

(-infinity, -1), (-1, 2/3) and (2/3, infinity).

Choose a test number from each interval and subst. it for x in the derivative formula above. If the derivative comes out +, the function is increasing on that interval; if -, the function is decreasing.

Ask all the questions you want, if this explanation is not sufficiently clear.

4 0

3 years ago

Read 2 more answers

What angle relationship describes VQR and QRW?

Vlad [161]

Answer: alternate interior angles

Step-by-step explanation:

Got it Right on the test. :)

8 0

3 years ago

Find f. A) 7.4 B) 8.2 C) 10.5 D) 11.1

tatyana61 [14]

F=72

g=6

------------

$\cos { \left( F \right) } =\frac { { e }^{ 2 }+{ g }^{ 2 }-{ f }^{ 2 } }{ 2eg }$

Therefore:

$\cos { \left( 72 \right) } =\frac { { e }^{ 2 }+{ 6 }^{ 2 }-{ f }^{ 2 } }{ 2\cdot e\cdot 6 } \\ \\ \cos { \left( 72 \right) } =\frac { { e }^{ 2 }+36-{ f }^{ 2 } }{ 12e }$

$\\ \\ 12e\cdot \cos { \left( 72 \right) } ={ e }^{ 2 }+36-{ f }^{ 2 }\\ \\ \therefore \quad { f }^{ 2 }={ e }^{ 2 }-12e\cdot \cos { \left( 72 \right) } +36\\ \\ \therefore \quad f=\sqrt { { e }^{ 2 }-12e\cdot \cos { \left( 72 \right) +36 } } \\ \\ \therefore \quad f=\sqrt { e\left( e-12\cos { \left( 72 \right) } \right) +36 }$

But what is e?

E=76

G=32

g=6

And:

$\frac { e }{ \sin { \left( E \right) } } =\frac { g }{ \sin { \left( G \right) } }$

Which means that:

$\frac { e }{ \sin { \left( 76 \right) } } =\frac { 6 }{ \sin { \left( 32 \right) } } \\ \\ \therefore \quad e=\frac { 6\cdot \sin { \left( 76 \right) } }{ \sin { \left( 32 \right) } }$

If you take this value into account, you will discover that f is...

$f=\sqrt { \frac { 6\cdot \sin { \left( 76 \right) } }{ \sin { \left( 32 \right) } } \left( \frac { 6\cdot \sin { \left( 76 \right) } }{ \sin { \left( 32 \right) } } -12\cos { \left( 72 \right) } \right) +36 } \\ \\ \therefore \quad f=10.8\quad \left( 1\quad d.p \right)$

So I would have to say that the answer is approximately (c).

6 0

2 years ago

Construct a quadrilateral abcd in which. ab=4 cm and ad=5cm ,Angle A=60°.Angle B=90°and Angle D=90°

Andrej [43]

Answer:

Step-by-step explanation:

3 0

2 years ago