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miskamm [114]
3 years ago
14

What should be done so that the expression will have a value of 10? 12 - 2 + 22 ÷ 8 Add parentheses around 2 + 2. Add parenthese

s around 12 - 2. Add parentheses around 2 2 ÷ 8. Nothing needs to be done.
Mathematics
1 answer:
mariarad [96]3 years ago
4 0

12-2+22/8 (=12.75 so the option of doing nothing isn't right)

12-(2+2)2/8 (=11 so that option is gone)

(12-2)+22/8 (=12.75 so that option is gone as well)

12-2+(22/8) (=12.75 So that's gone as well)

?????

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Parallelogram ABCD has the angle measures shown. Can you conclude that it is a rhombus, a rectangle, or a square? Explain.
Nikitich [7]
<span>We can analyze the four optons. 1) Option A. A parallelogram with all four angles of the same measure can be either a square or a rectangle, then this option is not valid. 2) Optrion B. gives not information. 3) A rhombus (a diamond) is a parallelogram with four congruent side (square is a specific case of rhmbus but not all rhombus are squares), and it is enouh to say that one diagonal bisects two interior angles, to conclude that it is a rhombus. 4) If a diagonal creates congruent angles, but you do not know what happens with the opposed angle, you cannot conclude that the parallelogram is a rectangle; it could be a trapezoid with one side perpendicular to the parallel sides. By t his analysis, the answer is option C.</span>
7 0
3 years ago
Read 2 more answers
Michelle, lori, and patti buy lunch together. The total bill was $45. If michelle pays 35% of the total bill and lori pays 48% o
siniylev [52]

Answer:

$7.65

Step-by-step explanation:

step one:

The total bill was $45.

michelle pays 35% of the total bill

= 35/100*45

=0.35*45

=$15.75

lori pays 48% of the bill

= 48/100*45

=0.48*45

=$21.6

Therefore patti will pay

=45-15.75-21.6

=$7.65

3 0
3 years ago
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What is the least common<br> multiple of 15a² and 3a2?<br> 1.3a2<br> 2.3a3<br> 3.15a2<br> 4.15a3
AveGali [126]

Answer:

1. 3a2

Step-by-step explanation:

5 0
3 years ago
Which expressions are equivalent to (5g+3h+4) . 2
Elza [17]

Answer:

2(5g+3h+4)

10g+6h+8

Please that is the answer

3 0
2 years ago
In a randomly selected sample of 1169 men ages 35–44, the mean total cholesterol level was 210 milligrams per deciliter with a s
Aneli [31]

Answer:

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

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 = 210, \sigma = 38.6

Find the highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10%.

This is the 10th percentile, which is X when Z has a pvalue of 0.1. So X when Z = -1.28.

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

-1.28 = \frac{X - 210}{38.6}

X - 210 = -1.28*38.6

X = 160.59

The highest total cholesterol level a man in this 35–44 age group can have and be in the lowest 10% is 160.59 milligrams per deciliter.

5 0
3 years ago
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