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Nataliya [291]
3 years ago
15

Solve by the square root method 2(5x-7)^2-1=15

Mathematics
1 answer:
Ainat [17]3 years ago
8 0
X=11/5 x=2.2 is slicing for x
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A greenhouse room at the botanical garden is in the shape of a hemisphere the height at the center of the dome is 24 feet what i
Montano1993 [528]

Answer:

C

Hope this helped!

8 0
3 years ago
2/5 divides by -4/7=?<br> Can I please get a specified answer?
iVinArrow [24]

Answer:

7/10

Step-by-step explanation:

(2/5)%(-4/7)

We will change the second fraction to make multiplication

So it will be 2/5×-7/4

=. -14/20

= -7/10

6 0
3 years ago
Tyler selects one card from the three(4,5, and a King), and rolls a number cube. What is the probability that she selects the 5,
Svet_ta [14]

\frac{1}{3}Answer:

2/9

Step-by-step explanation:

given that Tyler selects one card from the three(4,5, and a King), and rolls a number cube.

We find that A the event of selecting one card and B getting a number on rolling a number cube are independent events.

No of cards = 3

Prob of selecting 5 from 3 cards = P(1,2,3, or 4) = \frac{2}{3}

When rolling a number cube (assuming fair) there is equally likely for all numbers to appear from 1 to 6

Prob of getting 5 =\frac{1}{6}

Prob of getting less than 5 =

Since these two events are independent,

the probability that she selects the 5, and rolls a number less than 5

= Product of probabilities

= \frac{1}{3}*\frac{2}{3}

=\frac{2}{9}

6 0
3 years ago
A random sample of 20 purchases showed the sample mean of $48.77 and the sample standard deviation s is $17.58. How large is the
laila [671]

Answer:

<h2>$5.03</h2>

Step-by-step explanation:

Given data          

Sample Mean (M):  $48.77  

Sample Size (n): 20

Standard Deviation (σ) :  $17.58

Confidence Level: 80%

 we know that z*-Values for 80% Confidence  Levels is 1.28

the expression for margin of error is given bellow\

MOE= z*σ/√n

We can now substitute into the expression and solve for the MOE as

MOE= 1.28*17.58/√20

MOE= 22.502/4.47

MOE= 22.502/4.47

MOE= 5.03

The margin of error for a 80 % confidence interval is $5.03

3 0
3 years ago
What is 4.06 increased by 17?<br><br>please help me ​
Dafna1 [17]

Answer:

21.06

Step-by-step explanation:

4.06 increased by 17

4.06 + 17

21.06

4 0
3 years ago
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