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viktelen [127]
3 years ago
8

I NEED HELP WITH MATH

Mathematics
1 answer:
suter [353]3 years ago
4 0
The answer is 9n because 2n+7n simplifies into 9n
You might be interested in
How do you reduce 2 1/32
loris [4]

Answer:

2\frac{1}{32}=\frac{2\cdot 32+1}{32}=\frac{65}{32}

Step-by-step explanation:

Considering the expression

2\frac{1}{32}

As

\mathrm{Convert\:mixed\:numbers\:to\:improper\:fraction:}\:a\frac{b}{c}=\frac{a\cdot \:c+b}{c}

<em>Improper fraction is a fraction which has numerator greater than denominator, such as 5/3.</em>

So,

2\frac{1}{32}=\frac{2\cdot 32+1}{32}=\frac{65}{32}

As 2\frac{1}{32} is converted into improper fraction  \frac{65}{32} .

And  \frac{65}{32} can not be further reduced.

Therefore,

2\frac{1}{32}=\frac{2\cdot 32+1}{32}=\frac{65}{32}

Keywords: fraction, reduced form, improper fraction

Learn more about fractions from brainly.com/question/535608

#learnwithBrainly

7 0
3 years ago
Please help me out and explain with steps thank you.
Lana71 [14]

Answer:

at matilda's new job, she will make a rounded salary of $69,000 per year.

Step-by-step explanation:

when solving a problem like this, you have to take her current salary ($64,000 per year) and multiply it to the salary increase percentage by first turning the percentage into a decimal. to turn the percentage into a decimal, you imagine a tiny dot to the right of the 8 like this:

8.

and then you have to move that little dot to the left two times recreating it into .08. you multiply .08 (the salary increase percentage) by her current salary ($64,000) and then also add that number to matilda's current salary to come up with the answer you can round. I'll give you an example of my proscess just so I can give a clear visual of my explanation.

step one:

$64,000

x .08

-------------

5,120

step 2:

$64,000

+$5,120

-------------

$69,120

step 3:

$69,120 is rounded up to the nearest thousands is approximately $69,000

answer: $69,000

6 0
3 years ago
¿Cual es el monto producido por un capital de 7200 colocados al 4% anual durante 3 años y 4 meses ?
Ilia_Sergeevich [38]

Answer:

3 años 4 meses

 4   primer año

 4    segundo año

4    tercer año pero nos falta 4 meses  4/12 = .33333  esto x 4 los meses =    1.3333

____

13.3333

7200 * .133333= 959.9976  por aproximacion son 960

7200+960 = 8160 Es el monto producido

Opcion C

3 0
3 years ago
Here is a rectangle ABCD.
lana66690 [7]

Answer:

32%

Step-by-step explanation:

Area of rectangle ABCD = 20 * 30 = 600 Sq cm

After increasing the length and width of the rectangle by 20% and 10% respectively.

New length = 30 + 20% of 30 = 30 + 6 = 36 cm

New width = 20 + 10% of 20 = 20 + 2 = 22 cm

Area of new rectangle = 36*22 = 792 Sq cm

Increase in area = 792 - 600 = 192 Sq cm

Percentage increase in area

= (192/600) *100

= 32%

5 0
3 years ago
Read 2 more answers
Birth weights at a local hospital have a Normal distribution with a mean of 110 oz and a standard deviation of 15 oz. The propor
OLga [1]

Answer:

The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 110, \sigma = 0.15

The proportion of infants with birth weights between 125 oz and 140 oz is

This is the pvalue of Z when X = 140 subtracted by the pvalue of Z when X = 125. So

X = 140

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

Z = \frac{140 - 110}{15}

Z = 2

Z = 2 has a pvalue of 0.9772

X = 125

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

Z = \frac{125 - 110}{15}

Z = 1

Z = 1 has a pvalue of 0.8413

0.9772 - 0.8413 = 0.1359

The proportion of infants with birth weights between 125 oz and 140 oz is 0.1359 = 13.59%.

4 0
3 years ago
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