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nikdorinn [45]
3 years ago
13

Hi can you please help me and explain step by step if possible thank you

Mathematics
1 answer:
zaharov [31]3 years ago
3 0

Answer:  see image

<u>Step-by-step explanation:</u>

Count how many spaces the vertex is away from the line x = -1.  Then place that vertex the same distance on the other side of the line x = -1.

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Which choice correctly shows the solution(s) of the equation x2 = 225?
prisoha [69]

Answer:

C)x = +/-15

Step-by-step explanation:

15x15=225

-15x-15=225

7 0
3 years ago
Shilpa can stitch a shirt in 5 hours while Alka can do it in 4 hours how much time would it take to stitch 36 shirts if they wor
scoundrel [369]

Answer:

together, they would stitch 36 shirts in 162 hours or 6 days and 18 hours

8 0
3 years ago
The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the e
gizmo_the_mogwai [7]

Answer:

The large sample n = 1713.96

Step-by-step explanation:

<u>Explanation</u>:-

given the population proportion was estimated to be 0.22

population proportion (P) = 0.22

The 95 % level of significance = 1.96≅ 2

The margin of  error = 0.02

The formula of margin error

                                   \frac{2\sqrt{p(1-p)} }{\sqrt{n} } = 0.02    …  ( i )

Substitute 'p' values in equation (1)

\frac{2\sqrt{0.22(1-0.22)} }{\sqrt{n} } = 0.02

cross multiplication and simplification, we get

2X0.414= 0.02 \sqrt{n}

\frac{2X0.414}{0.02} = \sqrt{n}

41.4 = \sqrt{n}

squaring on both sides, we get

the large sample n = 1713.96

7 0
3 years ago
A population of insects increases according to the law of exponential growth. After 2 days of growth there are 100 insects. Afte
Fantom [35]

Answer:

I think its A so hope this helps

3 0
3 years ago
A car dealership increased the price of a certain car by 13%. The original price was $47400 what is the new price?
svlad2 [7]
The answer would be 53,562. You would multiply 47400 by 1.13 to get your answer. Hope this helps!
7 0
3 years ago
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