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4 years ago

Can someone help me fast please!!!!

Mathematics

1 answer:

allochka39001 [22]4 years ago

8 0

Answer:

Step-by-step explanation:

121=irrational

100= rational

99= irrational

10=rational

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On the function machine shown below, the function rule is given as a variable expression. When the output is 99, what is the inp

beks73 [17]

Answer: option d.

Step-by-step explanation:

We have the function:

y = f(x) = x^2 - 1

The output is 99 when y = 99, and the input is x.

Then we need to solve:

y = 99 = x^2 - 1

for x.

99 = x^2 - 1

99 + 1 =x^2

100 = x^2

√100 = x

10 = x

The correct option is d, input equals 10.

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3 years ago

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Select the correct product.

vfiekz [6]

The correct answer is: [A]: " 2x³ + 7x² + 12x − 8 " .
______________________________________________________

Explanation:
__________________________________________
Given:
__________________________________________
" (x² + 4x + 8) (2x − 1) " ; Find the product:

↔ " (2x − 1) (x² + 4x + 8) " ;
__________________________________________

Note: " (a + b) (c + d + e) = ab + ad + ae + bc + bd + ae " .
__________________________________________

→ " (2x − 1) (x² + 4x + 8) =

(2x * x²) + (2x * 4x) + (2x *8) + (-1 * x²) + (-1 * 4x) + (-1 * 8) ;

= 2x³ + 8x² + 16x + (-1x²) + (-4x) + (-8) ;

= 2x³ + 8x² + 16x − x² − 4x − 8) ;

→ Combine the "like terms" :

+ 8x² − x² = + 7x² ;

+ 16x − 4x = + 12x ;
_______________________________________________________
And rewrite the expression:
_______________________________________________________
→ " 2x³ + 7x² + 12x − 8 " ;

→ which is: Answer choice: [A]: " 2x³ + 7x² + 12x − 8 " .
_______________________________________________________

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3 years ago

Lyme disease is an inflammatory disease that results in a skin rash and flulike symptoms. It is transmitted through the bite of

neonofarm [45]

Answer:

Step-by-step explanation:

Let cases of Lyme disease = x

x = 2, 1, 3, 4, 5, 1, 2, 1, 6, 5, 4, 1

$\sum x = 35$