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3 years ago

240 words per minute convert this rate to words per second

Mathematics

1 answer:

swat323 years ago

3 0

4 words per second is the answer

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Can someone please help me with the bar with missing numbers? Please it’s hard for me

alexandr402 [8]

You multiply the number of cars(bottom row) by 4 to get the number of tires(top row) so if there are 4 cars then there will be 16 tires. If you think about it, there are 4 tires on a car so you would multiply the number of cars by 4 to get the number of tires

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4 years ago

How do you solve this? (#11/#12)

zepelin [54]

$\text{If}\ x_1,\ \text{and}\ x_2\ \text{are zeros of a polynomial function, then the function}\\\text{has equation}:\\\\f(x)=a(x-x_1)(x-x_2).\\----------------------------\\\\11.\ \text{We have the zeros}\ 3\ \text{and}\ i:\\\\f(x)=(x-3)(x-i)=(x)(x)+(x)(-i)+(-3)(x)+(-3)(-i)\\\\=x^2-xi-3x+3i=\boxed{x^2-(3+i)x+3i}\\\\12.\ \text{We have the zeros}\ -2\ \text{and}\ 2i:\\\\f(x)=(x-(-2))(x-2i)=(x+2)(x-2i)\\\\=x^2-(2i)^2=x^2-2^2i^2=x^2-4(-1)=\boxed{x^2+4}\\\\\text{used}\\\\(a-b)(a+b)=a^2-b^2\\\\i=\sqrt{-1}\to i^2=-1$

3 0

3 years ago

Which expression is equivalent to 4(3+ 5) - 3 • 9^2?

Molodets [167]

Answer: D

Is your answer.

Glad I could help!

Step-by-step explanation:

4 × 3 = 12 + 5 = 17 - 3 = 14 × 9² = 1134

A. -712

B. -22

C. -211

D. 1134.

7 0

3 years ago

Find the area of the trapezoid

zaharov [31]

Answer:

Step-by-step explanation:

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3 years ago

what is the percentage of change for the cost of cheeseburger if in the year of 2000 it was $5.00 and in 2015 is $6.50.

snow_lady [41]

Answer:

$2.50

2015: $2.00

2000: $7.50

2000: $5.00

2000: $2.00

2015: $9.00

2015: $6.50

2015: $4.50

2010

1. what is the percent of change in the cost of a pizza? _ a

x 150

100 1.50 p1500 750 1155oo.

150 isg

2. what is the percent of change in the cost of a cheeseburger?

175

6.50

1.50

Step-by-step explanation:

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3 years ago