3 years ago

Ax-b=c solve for b A- b= -ax-c B- b=ax+c C- b= -ax+c D- b=ax-c

1 answer:

Alex3 years ago

6 0

Ax - b = c....subtract ax from both sides
-b = -ax + c <==
or it could also have been b = ax - c (but that ones not there)

You might be interested in

A local company wants to evaluate their quality of service by surveying their customers.

stich3 [128]

Answer: b. 0.98

Step-by-step explanation:

The formula to find the maximum error of the estimated mean :

$E=z^*\dfrac{\sigma}{\sqrt{n}}$ (1)

, where $\sigma$ = standard deviation

n= Sample size

z* = Critical z-value.

As per given , we have

$\sigma=5$

n=100

Critical value for 95% confidence interval = z*=1.96

Put these values in the formula (1), we get

$E=(1.96)\dfrac{5}{\sqrt{100}}$

$E=(1.96)\dfrac{5}{10}=0.98$

Hence, the maximum error of the estimated mean quality for a 95% level of confidence is 0.98.

Therefore , the correct answer is b. 0.98 .

6 0

3 years ago

Read 2 more answers

How does the volume of a cone change if its radius and height are both tripled

Evgesh-ka [11]

The volume formula could be re-written to help understand this, as V = π*3r^2*3h. If you solve for this, you can conclude that the volume would be multiplied by 27.

6 0

3 years ago

Solve <br> 6r + 7 = 13 + 7r

Firdavs [7]

Answer:

r = -6

Step-by-step explanation:

6r + 7 = 13 + 7r

-6r both sides

7 = 13 + r

-7 both sides

r + 6 = 0

-6 both sides

r = -6

8 0

3 years ago

Read 2 more answers

Julie makes $9.26 an hour. this week she worked 20 hours and had $32.62 deducted for her payroll taxes what was her net income

riadik2000 [5.3K]

Net pay $152.58

9.26 times 20 - 32.62

8 0

3 years ago

Decompose 0.42 into tenths and hundredths

m_a_m_a [10]

Answer:

0.40 + 0.02

Step-by-step explanation:

4 tenths plus 2 hundredths

5 0

3 years ago