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3 years ago

8

What are the solutions of this quadratic equation ? x ^ 2 = 16x - 65 Substitute the values of a and b to complete the solutions

. Box Box Box^ Box TT sqrt Box sqrt[ Box] Box X x = a + bi x = a - bi

1 answer:

Karo-lina-s [1.5K]3 years ago

5 0

Answer:

x = 8 + $\sqrt{58}$ or x = 8 − $\sqrt{58}$

Step-by-step explanation:

Hope This Helps

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URGENT DUE BY 3:30 FOR A HUGE GRADE WILL RATE GOOD:)

mariarad [96]

A = L x W

20 x 20 = 400.

400 x 8 = 3200

4 0

3 years ago

When Luis begins painting, he realizes it takes him 45 seconds to complete 1 square foot. The room he is painting has 272 square

zepelin [54]

It will take Luis 12240 seconds to complete the project.

12240 seconds are 204 minutes when converted.

Step-by-step explanation:

Given,

Time taken to paint 1 square foot = 45 seconds

Time taken for 272 square feet = 45*272

Time taken for 272 square feet = 12240 seconds

We know that;

60 seconds = 1 minute

Therefore;

We will divide the total seconds by 60 to convert them into minutes.

12240 seconds = $\frac{12240}{60} = 204\ minutes$

It will take Luis 12240 seconds to complete the project.

12240 seconds are 204 minutes when converted.

Keywords: conversion, multiplication

Learn more about multiplication at:

#LearnwithBrainly

6 0

3 years ago

Betsy and Mary both got their hair cut on the same day. Betsy gets her hair cut every 28 days, and Mary gets her hair cut every

Bingel [31]

"Betsy gets her hair cut every 28 days and Mary gets hers every 35 days"
Find the least common multiple of 28 and 35.

28 = 2²×7
35 = 5×7
LCM(28, 35) = 2²×5×7
= 140

6 0

3 years ago

Answer ?????????????

BigorU [14]

Answer:

b^5

Step-by-step explanation:

b^ -6 * b^11

We know that a^c * a^d = a^ (c+d)

b^ -6 * b^11 = b^(-6+11)

= b^(5)

3 0

3 years ago

Read 2 more answers

Tutoring Services: The Community College Survey of Student Engagement reports that 46% of the students surveyed rarely or never

mina [271]

Answer:

Mean: 0.400

Standard error: 0.022

Step-by-step explanation:

We are taking samples of size n=500 out of a population with parameter p=0.40.

The expected distribution is the sampling distribution of sampled proportions. This distribution has parameters that are calculated as:

Mean: the mean of the sampling distribution is equal to the population proportion, as it is not biased.

In this case, the mean of this sampling distribution is p=0.40.

Standard error: the standard error depends on the population proportion and the sample size. It is calculated as:

$\sigma_p=\sqrt\dfrac{p(1-p)}{N}}=\sqrt\dfrac{0.4*0.6}{500}}=\sqrt{0.00048}=0.022$

being p: population proportion, N: sample size.

6 0

3 years ago