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Artemon [7]
3 years ago
13

Choose the equation that could be used to find two consecutive integers whose sum is 67.

Mathematics
1 answer:
Nataly [62]3 years ago
8 0
Consecutive is one right after the other.....so if one integer is n, then the next one is (n + 1).

n + (n + 1) = 67
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Adam wanted to play his video games. His mother told him that he needed to finish his homework, clean out the dishwasher, and cl
Deffense [45]

Answer:

148 minutes = 2h 28 min

Step-by-step explanation:

48min+(25+75mins)=48+100=148

5 0
2 years ago
Factor the trinomial by grouping.<br> 9x^3 - 3x^2 -30x
katen-ka-za [31]

Answer:

3x(3x+5)(x-2)

Step-by-step explanation:

9x^3-3x^2-30x= \\\\3x(3x^2-x-10)= \\\\3x(3x^2+5x-6x-10)= \\\\3x(x(3x+5)-2(3x+5))= \\\\3x(3x+5)(x-2)

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4 0
3 years ago
A savings account increases from $200 to $210 what is the percent increase of the savings in the account.
Illusion [34]

Answer:

5%

Step-by-step explanation:

10/200 × 100 = 5

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7 0
2 years ago
A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

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 = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

This is X when Z has a pvalue of 0.025, so X when Z = -1.96.

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

-1.96 = \frac{X - 65}{8.2}

X - 65 = -1.96*8.2

X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
Read 2 more answers
Let f(x)=3x^2+2.
Leona [35]
You would multiply it by 4
4(3x^2 +2 )
12x^2 +8
6 0
3 years ago
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