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4 years ago

Consider the function shown.

Mathematics

1 answer:

shepuryov [24]4 years ago

4 0

The function is decreasing from x=1 to x=8. See the attachment.

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3x+9+8x-6+7x-2=73 what is the value of x

Aliun [14]

Answer:

x=4

Step-by-step explanation:

First you add the values with x and theese without x:

(3x+8x+7x)+(9-6-2)=73

18x+1=73

Then you subtract (-1) from both sides:

18x=72

And then you divide by 18:

x=72:18=4

8 0

4 years ago

Use the quadratic formula to solve x^2 -3x - 5 = 0. Round to two decimal places.

Evgen [1.6K]

Answer:

$\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}$

$x=\frac{3+\sqrt{29}}{2},\:x=\frac{3-\sqrt{29}}{2}$

Step-by-step explanation:

Given the equation

$x^2\:-3x\:-\:5\:=\:0$

solving with the quadratic formula

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}$

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

$\mathrm{For\:}\quad a=1,\:b=-3,\:c=-5$

$x_{1,\:2}=\frac{-\left(-3\right)\pm \sqrt{\left(-3\right)^2-4\cdot \:1\cdot \left(-5\right)}}{2\cdot \:1}$

$x_{1,\:2}=\frac{-\left(-3\right)\pm \sqrt{29}}{2\cdot \:1}$

separating the solutions

$x_1=\frac{-\left(-3\right)+\sqrt{29}}{2\cdot \:1},\:x_2=\frac{-\left(-3\right)-\sqrt{29}}{2\cdot \:1}$

solving

$x=\frac{-\left(-3\right)+\sqrt{29}}{2\cdot \:\:1}$

$=\frac{3+\sqrt{29}}{2\cdot \:1}$

$=\frac{3+\sqrt{29}}{2}$

also solving

$\:x=\frac{-\left(-3\right)-\sqrt{29}}{2\cdot \:\:1}$

$=\frac{3-\sqrt{29}}{2\cdot \:1}$

$=\frac{3-\sqrt{29}}{2}$

$\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}$

$x=\frac{3+\sqrt{29}}{2},\:x=\frac{3-\sqrt{29}}{2}$

7 0

3 years ago

choose a method then find the product 30 times 52

Lunna [17]

First 3x52 = 156 then 156x10 = 1560

5 0

4 years ago

Read 2 more answers

Q.15 - Please Help, I will give Brainliest!!!!

sergey [27]

X= 16

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6 0

3 years ago

Read 2 more answers

Kaiden deposited $6200 into a savings account for which interest is compounded weekly at a rate of 2.77%.

scoray [572]

A=p(1+i/m)^mn
A=6,200×(1+0.0277÷52)^(52×8)
A=7,737.59
Interest earned=7737.59-6200=1537.59

5 0

3 years ago