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frez [133]
3 years ago
8

144^2 - 121^2=

Mathematics
1 answer:
Mademuasel [1]3 years ago
7 0

Answer:

<h2>b. (144 + 121)(144 - 121)</h2>

Step-by-step explanation:

Use a² - b² = (a + b)(a - b)

144² - 121² = (144 + 121)(144 - 121)

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Sharise Brody folds and glues corrugated cardboard boxes at the rate of $0.57 per box. If she averages 40 boxes per hourhow much
Valentin [98]

Answer:

she makes $22.80 a day

Step-by-step explanation:

since she makes $0.57 per box and averages at 40 boxes a day, we multiply 40 and 0.57. 40 x 0.57 = 22.8, or $22.80.

hope this helped!

6 0
2 years ago
Laura’s fish tank has 17 liters of water in it. She plans to add 5 liter per minute until the tank has more than 72 liters. What
Hoochie [10]
T= number of minutes

Multiply 5 liters by number of minutes (t), then add the 17 liters already in the tank. This totals 72 liters or more.

17 + 5t ≥ 72
subtract 17 from both sides

5t ≥ 55
divide both sides by 5

t ≥ 11 minutes


ANSWER: Laura could add water for 11 minutes to be sure the tank has 72 liters or more.

Hope this helps! :)
3 0
3 years ago
Suppose you obtained a Spearman rs of 0.53 from a sample of 13 pairs of scores. For a two-tailed test, such a correlation coeffi
Anastasy [175]

Answer:

C: p < 0.01

Step-by-step explanation:

We are given;

Spearman rank Correlation Coefficient: rs = 0.53

sample size: n = 13 pairs

Now, from the table attached, tracing n = 13 and locating a corresponding value of rs = 0.53 which falls in between 0.484 and 0.56. Thus, we can see that p is greater than the nominal significance value of 0.05 but less than 0.01.

Thus, correct answer is p < 0.01

3 0
3 years ago
Plot the x- and y-intercepts to graph the equation. y=−x−5
Natasha_Volkova [10]
X-intercept would be (-5,0)

and the y-intercept would be (0,-5)


5 0
3 years ago
Read 2 more answers
What is the yintercept of the line given by the equation below?
LUCKY_DIMON [66]

Answer:

C

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 4x - 6 ← is in slope- intercept form

with y- intercept c = - 6 ⇒ (0, - 6 )

8 0
3 years ago
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