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3 years ago

Evaluation the given expression for x=13. 4x+7 =?

2 answers:

8 0

The unknown value is 59

Substitute in 13 for x in the expression 4x+7. The new expression will look like 4(13)+7 after substituting. Next multiply 4 by 13 which will give you 52. The new expression will be 52+7, now add and you’ll have 52+7=59

bekas [8.4K]3 years ago

8 0

Answer:

Step-by-step explanation:

(4*13)+7

=52+7

=59

You might be interested in

Find r(t) if r'(t) = 5t4i + 6t5j + t k and r(1) = i + j.

Vladimir [108]

$\mathbf r(t)=\displaystyle\int(5t^4\,\mathbf i+6t^5\,\mathbf j+t\,\mathbf k)\,\mathrm dt$
$\mathbf r(t)=(t^5+C_1)\,\mathbf i+(t^6+C_2)\,\mathbf j+\left(\dfrac12t^2+C_3\right)\,\mathbf k$

Given $\mathbf r(1)=\mathbf i+\mathbf j$ , we have

$\begin{cases}1^5+C_1=1\\\\1^6+C_2=1\\\\\dfrac121^2+C_3=0\end{cases}\implies C_1=0,C_2=0,C_3=-\dfrac12$

so that the particular solution is

$\mathbf r(t)=t^5\,\mathbf i+t^6\,\mathbf j+\dfrac12(t^2-1)\,\mathbf k$

8 0

3 years ago

- 5g = 20 How do you solve this

dezoksy [38]

Answer:

g= -4

Step-by-step explanation:

-5g = 20

Divide the -5 to both sides

-5g / -5 = 20/ -5

both -5 cancel out and g is left alone

20/-5 = -4

g= -4

6 0

3 years ago

Read 2 more answers

What is the mean of the following data set? 3.245, 3.678, 3.3, 2.499, 2.9, 3.206, 2.081

Sholpan [36]

Answer:

2.987

Step-by-step explanation:

The mean is calculated by dividing the sum of the terms by the # of terms.

For this problem, add all of the terms together:

3.245 + 3.678 + 3.3 + 2.499 + 2.9 + 3.206 + 2.081 = 20.909

Now, divide the product by the number of terms there are. There are 7 terms.

20.909 ÷ 7 = 2.987

3 0

3 years ago

X²-10+3x=0 la ecuación es completa o incompleta?

hjlf

Answer:

Yes, the equation is complete.

Step-by-step explanation:

The given quadratic equation, x² + 3x - 10 = 0 is expressed in standard form, ax² + bx + c = 0.

Where: a = 1, b = 3, and c = -10.

Using the quadratic formula:

$x = \frac{-b (+/-) \sqrt{b^{2} - 4ac} }{2a}$

We can solve for its solution by plugging in the values for a, b, and c.

$x = \frac{-b (+/-) \sqrt{b^{2} - 4ac} }{2a}$

$x = \frac{-3 (+/-) \sqrt{(3)^{2} - 4(1)(-10)} }{2(1)}$

$x = \frac{-3 (+/-) \sqrt{9 + 40} }{2}$

$x = \frac{-3 (+/-) \sqrt{49} }{2}$

$x = \frac{-3 + 7 }{2}$ , $x = \frac{-3 - 7 }{2}$

$x = \frac{4}{2} = 2$ , $x = \frac{-10 }{2} = - 5$

Therefore, the solutions of the quadratic equation, x² + 3x - 10 = 0 is:

x = 2, and x = -5

Please mark my answers as the Brainliest, if you find this helpful :)

6 0

3 years ago

Tim simplified the difference 1/2p-(1/4p-4) as 3/4p-4. Did he find the correct difference? Explain.

Doss [256]

Answer:

TIM'S ANSWER IS WRONG.

The correct simplification is $=\frac{p}{4}+4$ .

Step-by-step explanation:

Given the difference expression

$\frac{1}{2}p-\left(\frac{1}{4}p-4\right)$

Tim's answer : $\frac{3}{4}p-4$

TIM'S ANSWER IS WRONG.

Let us correctly simplify the difference expression

$=\frac{1}{2}p-\left(\frac{1}{4}p-4\right)$

$=\frac{p}{2}-\left(\frac{p}{4}-4\right)$

$=\frac{p}{2}-\frac{p}{4}+4$

Combine Like Terms:

$=(\frac{p}{2}-\frac{p}{4})+(4)$

$=\frac{p}{4}+4$ ∵ $\frac{p}{2}-\frac{p}{4}=\frac{p}{4}$

Hence, the correct simplification is $=\frac{p}{4}+4$ .

Keywords: operation, difference

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4 0

3 years ago