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3 years ago

Simplify the expression 11x + 9 - 7

Mathematics

2 answers:

Akimi4 [234]3 years ago

6 0

Combine like terms. In this case that means combining 9 and -7:

9-7 = 2.

Then <span>11x + 9 - 7 = 11x + 2</span>

meriva3 years ago

4 0

The simplified version of this is 11x+2

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3 4/7 minus 2 1/5 by rounding to the nearest half

mylen [45]

Answer:

$1 \frac{13}{35}$

Step-by-step explanation:

$3 \frac{4}{7} - 2 \frac{1}{5}$

you can solve for the fractions first, but you have to give them a common denominator

$\frac{20}{35}- \frac{7}{35}$

$= \frac{13}{35}$ which is in simplest form

then solve for the whole numbers

3-2=1

therefore, the answer is $1 \frac{13}{35}$

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3 years ago

Find x and y (Please answer)

Paul [167]

Answer:

X=58

Y=32

Step-by-step explanation:

Right angle is 90°

90-58=32

The one thats 58° is opposite on x so they are th same what means y is 32°

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4 years ago

Express (5⁴)(5⁷) as a power with a single exponent.

Jobisdone [24]

Im think it might be 5
${5}^{4} \times {5}^{7 = } {5}^{11}$
so sorry if im wrong

6 0

3 years ago

Which will have a higher effective interest rate a payday loan for $2300 do in 15 days of the fee of $120 or a payday or loan fo

Elan Coil [88]

Answer:

A payday loan for $2300 due in 13 days with a fee of $120, because it has a shorter period

Step-by-step explanation:

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3 years ago

A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a s

jasenka [17]

Answer:

The minimum score of those who received C's is 67.39.

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:

$\mu = 73, \sigma = 11$