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3 years ago

Write an equation that involves multiplication,addition, contains a variable and has a solution of 8.

Mathematics

2 answers:

BaLLatris [955]3 years ago

6 0

Hi there!

Here's an equation:

(Solve for x.)
x=(4+1)*2-2

Hope this helps!

WITCHER [35]3 years ago

5 0

Is there a photo with this

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HELP PLZZZ THIS IS A MAJOR GRADE :((( MARKING BRAINLIEST

Lorico [155]

Answer:

5.09

Step-by-step explanation:

your welcome...........

3 0

3 years ago

How do you determine the area under a curve in calculus using integrals or the limit definition of integrals?

RSB [31]

Answer:

Please check the explanation.

Step-by-step explanation:

Let us consider

$y = f(x)$

To find the area under the curve $y = f(x)$ between $x = a$ and $x = b$ , all we need is to integrate $y = f(x)$ between the limits of $a$ and $b$ .

For example, the area between the curve y = x² - 4 and the x-axis on an interval [2, -2] can be calculated as:

$A=\int _a^b|f\left(x\right)|dx$

= $\int _{-2}^2\left|x^2-4\right|dx$

$\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx$

$=\int _{-2}^2x^2dx-\int _{-2}^24dx$

solving

$\int _{-2}^2x^2dx$

$\mathrm{Apply\:the\:Power\:Rule}:\quad \int x^adx=\frac{x^{a+1}}{a+1},\:\quad \:a\ne -1$

$=\left[\frac{x^{2+1}}{2+1}\right]^2_{-2}$

$=\left[\frac{x^3}{3}\right]^2_{-2}$

computing the boundaries

$=\frac{16}{3}$

Thus,

$\int _{-2}^2x^2dx=\frac{16}{3}$

similarly solving

$\int _{-2}^24dx$

$\mathrm{Integral\:of\:a\:constant}:\quad \int adx=ax$

$=\left[4x\right]^2_{-2}$

computing the boundaries

$=16$

Thus,

$\int _{-2}^24dx=16$

Therefore, the expression becomes

$A=\int _a^b|f\left(x\right)|dx=\int _{-2}^2x^2dx-\int _{-2}^24dx$

$=\frac{16}{3}-16$

$=-\frac{32}{3}$

$=-10.67$ square units

Thus, the area under a curve is -10.67 square units

The area is negative because it is below the x-axis. Please check the attached figure.

6 0

3 years ago

HURRY FAST PLEASEEE I NEED IT SOON

astra-53 [7]

Answer: 2/7, 2 : 5, 2 to 5

Step-by-step explanation:

7 is the total

5 is white

2 is grey

2/7 is 2 out of 7 since 2 is grey

2 : 5 is 2 grey for 5 white

2 to 5 is the same thing as 2 : 5

4 0

3 years ago

Alan weighs 3 pounds more than twice what Dylan weighs. Write an expression o represent Alan’s weight in terms of Dylan’s weight

IgorLugansk [536]

Answer:

2x+3

Step-by-step explanation:

2x+3=Alan's Weight

2x= Dylan's weight times two

+3= the plus three more pounds

Which then equals Alan's weight.

4 0

3 years ago

I don’t understand can someone please help.

stiks02 [169]

Answer:

Step-by-step explanation:

Remark

The red triangle has 1/3 the side length of the blue triangle. So the quick answer is the missing side of the blue triangle is 66

Now no one marking this, if they require work is going to accept that quick line of reasoning, so what you have to do is set up a proportion.

Equation (proportion)

57/19 = x / 22 Cross multiply

Solution

57*22 = 19 * x Divide by 19

57*22/19 = x Divide 19 into 57 (which is 3)

3 * 22 = x

x = 66

5 0

3 years ago