All categories

2 years ago

3(5-9b)+11=-244 solve for b

Mathematics

2 answers:

ryzh [129]2 years ago

6 0

B= -218/27 when solving for b

natta225 [31]2 years ago

3 0

15-27b+11=-244
26-27b=-244
-27b=-270
b=10

You might be interested in

Suppose you can somehow choose two people at random who took the SAT in 2014. A reminder that scores were Normally distributed w

Sindrei [870]

Answer:

22.29% probability that both of them scored above a 1520

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 1497, \sigma = 322$

The first step to solve the question is find the probability that a student has of scoring above 1520, which is 1 subtracted by the pvalue of Z when X = 1520.

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{1520 - 1497}{322}$

$Z = 0.07$

$Z = 0.07$ has a pvalue of 0.5279

1 - 0.5279 = 0.4721

Each students has a 0.4721 probability of scoring above 1520.

What is the probability that both of them scored above a 1520?

Each students has a 0.4721 probability of scoring above 1520. So

$P = 0.4721*0.4721 = 0.2229$

22.29% probability that both of them scored above a 1520

8 0

2 years ago

Please help!! Question is above in the image

klasskru [66]

9514 1404 393

Answer:

$503.85

Step-by-step explanation:

The amortization formula can help with this.

A = P(r/12)/(1 -(1 +r/12)^(-n))

where P is the loan value, A is the monthly payment, r is the annual interest rate, and n is the number of monthly payments.

We want to find P. All of the other values are given.

P = A(1 -(1 +r/12)^-n)/(r/12)

P = 32.48(1 -1.012667^-18)/(0.012667) = 31.48·16.0054

P ≈ 503.85

The equivalent cash price is about $503.85.

7 0

2 years ago

On a hiking trip,LaShana notes that she hikes about 12 kilometers every 4 hours .If she continues at this rate,use a ratio table

Evgesh-ka [11]

12 : 4 = 3 km her <span>speed per hour
3 * 6 = 18 km </span><span>she could hike in 6 hours</span>

4 0

3 years ago

What is the 20th term to -30,-22,-14,-6?

galben [10]

98.
The numbers increase by intervals of 8. You need 16 more terms until you reach the 20th term, so 16*8=128.
128-30=98.

5 0

2 years ago

A health food store makes trail mix using dried fruit and nuts. The cost of the dried fruit is $2.50 per pound and the cost of t

finlep [7]

The term 2.5x represents the fact that the cost of dried fruit is 2.50 per pound, as 2.50 equals 2.5. the x represents the number of pounds bought. does that answer your question?

6 0

2 years ago