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Ludmilka [50]
4 years ago
7

Question 3 Kala purchased a prepaid phone card for $30 . Long distance calls cost 13 cents a minute using this card. Kala used h

er card only once to make a long distance call. If the remaining credit on her card is $25.06 , how many minutes did her call last?
Mathematics
2 answers:
Finger [1]4 years ago
8 0
$30.00-$25.06=$4.94. Kala used $4.94 on her card for the last call. 13cents per minute, divide 4.94/13=38, her last call 38 minute.
sweet-ann [11.9K]4 years ago
5 0
Her call lasted 12 minutes
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Help please!!! I need it!
Grace [21]

Answer:

1300.62

Step-by-step explanation:

thank me later lolol.

8 0
3 years ago
Consider the following expression and determine which statements are true. x^2+5yz−8
statuscvo [17]

Answer:

A.there are 3 terms.

B.the variables are x, y, and z.

Step-by-step explanation:

Complete question below:

Consider the following expression and determine which statements are true. x^2+5yz−8

CHOOSE 2 ANSWERS)

A.there are 3 terms.

B.the variables are x, y, and z.

C.The coefficient of x is 2.

D.the term 5yz is made up of 2 factors

The expression x^2+5yz-8

has three terms namely: x^2, 5yz and -8

The variables are x, y and z

The coefficient of x is 1 not 2, so option c is wrong

The term 5yz is made up of more than two factors namely 5, y, z, 5y, 5z, 5yz . So option d is also wrong.

The correct answers are option a and option b

A.there are 3 terms.

B.the variables are x, y, and z

8 0
3 years ago
Squad root of 130 by using the Babylonian method. Let 11.5 be initial.
tangare [24]


The Babylonian method for approximating square roots is the recursive method given by:

Given:

x0≈k−−√
x
0
≈
k


Then:

xn+1=x2n+k2xn
x
n
+
1
=
x
n
2
+
k
2
x
n


where k
k
is the number for which we are approximating the square root.

So, armed with this formula, let's now answer the given questions:

1.) Fill in the missing info in the problem to find square root 130 by using the Babylonian method. Let 11.5 be your initial guess.

We will use 15 digits of precision here since it is not stated how many iterations to carry out:

x0=11.5
x
0
=
11.5


x1≈11.4021739130435
x
1
≈
11.4021739130435


x2≈11.4017542587143
x
2
≈
11.4017542587143


x3≈11.4017542509914
x
3
≈
11.4017542509914


x4≈11.4017542509914
x
4
≈
11.4017542509914


Thus, with 15 digits of accuracy, we may state:

130−−−√≈11.4017542509914
130
≈
11.4017542509914


2.) Use the Babylonian method for your next estimate of square root 115 by using 10.7262 as your guess what's your next result?

The next result here is approximately:

x1=10.72622+1152⋅10.7262≈10.7238055620816
x
1
=
10.7262
2
+
115
2
⋅
10.7262
≈
10.7238055620816



3.) Nails wants to use the Babylonia method to estimate square root 58 to the nearest hundredth her initial estimate is 7.8. What is her estimate after she correctly completes the Babylonian method once?

The next result here is:

x1=7.82+582⋅7.8=7.6179487¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
x
1
=
7.8
2
+
58
2
⋅
7.8
=
7.6
179487
¯


4.) If you use the Babylonian method to estimate square root 75 to the nearest hundredth, starting with the estimate 8. What is the next estimate?

The next result here is:

x1=82+752⋅8=8.6875
x
1
=
8
2
+
75
2
⋅
8
=
8.6875
6 0
3 years ago
Find the slope:<br><br> a line passes through P (3,-7) and Q (-5,5)
nalin [4]

76 mutiply by each other

7 0
3 years ago
Bobbi skated 3\8 mile in the morning and then skated 1 3\8 miles in the afternoon.
WINSTONCH [101]

it is <u>A</u>, because 1 3/8 + 3/8 is 1 6/8, which reduces to 1 3/4
8 0
3 years ago
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