Which expressions result in a positive number? Choose all answers that are correct.

A.

B.
–5 – (–5.1)

C.
14 • (–3)

D.
3 + (–7)

Answers

Answer 1

Answer: Expression B results in a positive number

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Shureka Washburn has score of 72,67,82, and 79 on her alebra test. Use an inequality to find the scores she must make on the final exam to pass the course with an average of 77 or higher, given that the final exam counts as two test.

Answers

Answer:

$x \geq 81$

Step-by-step explanation:

Shureka Washburn has score of 72,67,82, and 79 on her algebra test.

Let x be the score on the final exam.

$(72+67+82+79+x+x)/(6) \geq 77$

=> $(300+2x)/(6) \geq 77$

=> $300+2x \geq(77)6$

=> $300+2x \geq 462$

=> $2x \geq 462-300$

=> $2x \geq 162$

=> $x \geq 81$

72+67+82+79=300
300/4=75
300+81+81=462
462/6=77

ANSWER X MUST BE GREATER THAN OR EQUAL TO 81

There are 250 students in a senior. of the 250 students, 102 are boys. there are 20 senior girls and 18 senior boys on the track team. What is the probablity a randomly chosen student from the senior class is a girl who does not run track?

Answers

If 102 are boys then 250 - 102 = 148 are girls.
If 20 girls run track, then 148 - 20 = 128 girls do not run track
probability a randomly chosen student from the senior class is a girl who does not run track = (probability the student chosen is a girl) * (probability the student does not run track)
= (148/250) * (128/250) = 128/250 = 62/125

What is the equivalent fractions for 3/10?

Answers

Answer:

6/20, 15/50, 9/30, 30/100, 12/40, 18/60....

Step-by-step explanation:

Its just multiplying the fraction by any whole number.

Make sure to do both the numerator and the denominator!

(hope this helps)

- Tony had 4 equal sets of sportscards. He gave his friends 5 cards.
Now he has 31 cards. How many
cards were in each set?

Answers

Answer:

9 cards

Step-by-step explanation:

he originally had 36 cards before giving 5 away, 36 divided by 4 is 9

A restaurant sells 10 tacos for $8.49 or 6 of the same kind of taco for $5.40 which is a better deal

Answers

Answer:

10 for 8.49

Step-by-step explanation:

With the 6 for 5.40 each taco is 90 cents. With 10 for 8.49 each taco is Around 85 cents.

Answer:

The 6 taco deal is better

Step-by-step explanation:

The 6 taco pack is a better deal. This is because the 10-pack has a unit rate of about $8.00 per taco, and the 6-pack has a unit rate of about $5.00 per taco.

Hannah reads 3 pages every 8 minutes. Write an equation that shows the relationship between the number of pages she reads (p) and the number of minutes she spends reading (m).