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3 years ago

Sovlve the equation. Show work.

Mathematics

2 answers:

mash [69]3 years ago

4 0

Answer:

x= 10

Step-by-step explanation:

4x- 1x= 3x

3x- 9 = 21

3x- 9 (+9)= 21 (+9)

3x= 30

3x (÷3)= 30 (÷3)

x= 10

Rainbow [258]3 years ago

3 0

Answer:

x = 10

Have a good day! Brainliest?

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If the spinner is spun 100 times how many times would you predict it would land on yellow?

viva [34]

Answer:20

Step-by-step explanation:

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4 years ago

Find the inverse of f(x)

FinnZ [79.3K]

Answer:

$\huge\boxed{A.\ f^{-1}(x)=\dfrac{x-3}{5}}$

Step-by-step explanation:

$f(x)=5x+3\to y=5x+3\\\\\text{exchange}\ x\ \text{with}\ y\\\\5y+3=x\\\\\text{solve for}\ y\\\\5y+3=x\qquad|\text{subtract 3 from both sides}\\\\5y+3-3=x-3\\\\5y=x-3\qquad|\text{divide both sides by 5}\\\\\dfrac{5\!\!\!\!\diagup y}{5\!\!\!\!\diagup}=\dfrac{x-3}{5}\\\\y=\dfrac{x-3}{5}\to f^{-1}(x)=\dfrac{x-3}{5}$

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3 years ago

The radius of the circle is 7 inches what is the approximate length of AB (AB is 135 degrees

Sholpan [36]

We know that
circumference=2*pi*r
for r=7 in
circumference=2*pi*7------> 14*pi in

if 360° (full circle) has a length of------------ 14*pi in
135°-----------------------------> x
x=135*14*pi/360----------> x=5.25*pi in--------> 16.49 in

the answer is
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3 years ago

Is 100 a solution because it is much greater than 35. True or false

Komok [63]

Answer:False

Step-by-step explanation:

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4 years ago

Read 2 more answers

The starting temperature was 24°.

ipn [44]

Answer:

-10°

Step-by-step explanation:

take 24°+8°= 32

beacuse there was a decrease of 7° per hour for 6 hours you must subtract 7° six times from 32°

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