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Anna11 [10]
3 years ago
6

Myra saved $15 a month for 18 months. She bought a book for $46.50 and a tennis racquet for $129.95. How much does she have left

? A. $93.55 B. $140.05 C. $186.55
Mathematics
1 answer:
Elis [28]3 years ago
7 0

Answer:

A

Step-by-step explanation:

15*18=270.

270-46.50=223.5

223.5-129.95=93.55.

A. $93.55

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What is each of the four sections created by the intersecting lines called?
lyudmila [28]

Answer:

Quadrants

Step-by-step explanation:

When two lines intersect such that they are perpendicular to each other, then  quadrants are said to be formed. So that a given space would be divided into four quadrants when two perpendicular lines are drawn on it.

Each section which is called quadrant is at right angle to one another. So that the addition of their angles at the meeting point is the sum of four right angles i.e 360^{o}. Thus each of the four sections created by the intersecting lines is called a quadrant.

6 0
3 years ago
The mean life of a certain brand of auto batteries is 44 months with a standard deviation of 3 months. Assume that the lives of
alisha [4.7K]

Answer:

99.7%

Step-by-step explanation:

Using the z score formula

z-score is z = (x-μ)/σ

where:

x = raw score

μ = population mean

σ = population standard deviation.

a) for x = raw score = 35

μ = population mean = 44

σ = population standard deviation =3

z = (35 - 44)/3

z = -9/3

z = -3

b) for x = raw score = 53

μ = population mean = 44

σ = population standard deviation =3

z = (53 - 44)/3

z = 9/3

z = 3

We would use the standard normal distribution table to find their probabilities

P(Z<=-3)=0.0013499

P(Z<=+3)=0.99865

So P(-3<=Z<=3)=0.99865 - 0.0013499 = 0.9973

Converting to percentage = 0.9973 × 100 = 99.73%

Therefore, the percentage of auto batteries of this brand that have a life of 35 to 53 months to one decimal place is 99.7%

6 0
3 years ago
Identify the equation in slope-intercept form for the line with the given slope that contains the given point.
adell [148]

Answer:

The equation would be -5=4(6)+ b

Step-by-step explanation:

3 0
2 years ago
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Line m is a perpendicular bisector of line segment S Q. It intersects line segment S Q at point R. Line m also contains points T
olganol [36]

Answer:

31 units

Step-by-step explanation:

just did it on edge

8 0
3 years ago
Read 2 more answers
Should hypothesis the part of scientific inquiry
Vadim26 [7]
It is an assumption of something not scientific.
6 0
3 years ago
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