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2 years ago

Karma took a 50 question math test, but only 40 questions were correct. What was the percentage of correct answers?

Mathematics

1 answer:

AysviL [449]2 years ago

7 0

Answer:

85 percent

Step-by-step explanation:

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What is 26/15 as a whole number?

Contact [7]

Answer:

1 11/15

Step-by-step explanation:

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2 years ago

Help pls ill mark brainliest

Naily [24]

Answer:

A. 2,310 sq ft

Step-by-step explanation:

Rectengle below:

A = l × b
A = 74 × 15
A = 1,110ft

Rectangle Above:

A = l × b
A = 50 × 24
A = 1,200ft

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1,310 sq ft (A)

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2 years ago

Find the sum of the series if n = 6, r = 1/4, a = 2.

emmasim [6.3K]

Given =

n=6,

r=1/4

a=2

Sn = a+ar+ar²+ar³+ar⁴+ar⁵= 2+0.5+0.125+0.03125+0.0078125+0.00195~ 2.67

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3 years ago

Find the inverse function of <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%209%20%2B%20%20%5Csqrt%7B4x%20-%204%7D%20" id=

Vedmedyk [2.9K]

Answer:

$\displaystyle {f}^{ - 1}(x) = \frac{1}{4} (x - 18x + 85)$

Step-by-step explanation:

we would like to find the inverse of the following function:

$\displaystyle f(x) = 9 + \sqrt{4x - 4}$

to do so substitute y for f(x):

$\displaystyle y= 9 + \sqrt{4x - 4}$

interchange variables:

$\displaystyle x= 9 + \sqrt{4y - 4}$

cancel 9 from both sides:

$\displaystyle \sqrt{4y - 4} = x - 9$

square both sides:

$\displaystyle 4y - 4= x - 18x + 81$

add 4 in both sides:

$\displaystyle 4y = x - 18x + 85$

divide both sides by 4:

$\displaystyle y = \frac{1}{4} (x - 18x + 85)$

substitute back:

$\displaystyle {f}^{ - 1}(x) = \frac{1}{4} (x - 18x + 85)$

and we're done!

7 0

3 years ago

Read 2 more answers

3. Which ordered pair is a solution of the equation y=x-3?

Vlada [557]

The answer is B (-5,2)

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3 years ago