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2 years ago

Find the value of x for which f(x)=-2

Mathematics

1 answer:

enyata [817]2 years ago

6 0

Answer:

x=2

Step-by-step explanation:

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A realtor is decorating some homes for sale, putting a certain number of decorative pillows on each twin bed and a certain numbe

VikaD [51]

The number of decorative pillows did the realtor arrange on each twin bed and queen bed is 6 and 9 respectively.

<h3>Simultaneous equation</h3>

let

Number of decorative pillows for twin bed = x
Number of decorative pillows for queen bed = y

x + y = 15

2x + y = 21

From equation (1)

x = 15 - y

Substitute x = 15 - y into (2)

2x + y = 21

2(15 - y) + y = 21

30 - 2y + y = 21

- 2y + y = 21 - 30

-y = -9

y = 9

Substitute y = 9 into

x + y = 15

x + 9 = 15

x = 15 - 9

x = 6

Learn more about simultaneous equation:

brainly.com/question/16863577

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7 0

1 year ago

Which is the graph of g(x)?

faust18 [17]

Answer: A because its always A

Step-by-step explanation:

6 0

2 years ago

ANSWER ASAP

xz_007 [3.2K]

Answer:

12.5 pi or 39.26990

Step-by-step explanation:

First we can find the radius, which is half the diameter, 5 feet. To find the area of a semi-circle we would find the area of the circle and then divide by 2:

$\frac{\pi r^2}{2}$

We can substitute what we have:

$\frac{25\pi }{2}$

This gives us:

12.5 pi or 39.26990(Not sure what format you need it in)

6 0

2 years ago

Prove that : sinA/1+cosA + 1+cosA/sinA=2cosecA

tekilochka [14]

Step-by-step explanation:

$\frac{sinA}{1+cosA} +\frac{1+cos}{sinA} =2cosec\\\\\\\frac{sin^{2}A+(1+cos)^{2} }{sinA(1+cosA)} \\\\$

$\frac{sin^{2}A+1+cos^{2}+2cos}{sinA(1+cosA)} \\\\$ and we have $sin^{2}+cos^{2} =1$

so $\frac{1+1+2cosA }{sinA(1+cosA)} \\\\$

$\frac{2+2cosA }{sinA(1+cosA)} \\\\$

$\frac{2(1+cosA)}{sinA(1+cosA)} \\\\$

$\frac{2}{sinA}$ we have $\frac{1}{sin}=cosec\\$

<em>Finally </em> $2cosecA$ <em />

<em>I really hope this helps coz it took much time </em>

3 0

2 years ago

a square with sides of length 5 is positioned inside a square with sides of length 7. What is the total area between the squares

Vlad [161]

5x7=35
your answer is 35 hope i helped

3 0

2 years ago

Read 2 more answers