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Romashka [77]
3 years ago
10

Which of the following are the coordinates of the vertex of y = −x2 + 2x + 1

Mathematics
1 answer:
Brut [27]3 years ago
6 0

Answer:

The vertex would be 1

Step-by-step explanation:

Desmos makes a horizontal line and that line is on the y axis at 1

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A bottle contains 255 coins. 1/3 of the coins are ?1.00. 110 of the coins are 50p coins. the rest are 20p coins. work out the to
aliina [53]

Answer:

£152.

Step-by-step explanation:

We have been given that a bottle contains 255 coins. 1/3 of the coins are  £1.00.

Let us find 1/3 of 255 to find the number of £1 coins.

\£1\text{ coins}=\frac{1}{3}\times 255

\£1\text{ coins}=85

This means we have £85.

We are also told that 110 of the coins are 50 p coins.

\text{Value of 50 p coins}=\£0.50\times 110

\text{Value of 50 p coins}=\£55

Let us figure out number of 20 p coins by subtracting the number of £1 coins and 50 p coins from 255.

\text{Number of 20 p coins}=255-(85+110)

\text{Number of 20 p coins}=255-(195)

\text{Number of 20 p coins}=60

\text{Value of 20 p coins}=\£0.20\times 60

\text{Value of 20 p coins}=\£12

Now let us find total value of the coins contained in the bottle by adding the values of £1 coins, 50 p coins and 20 p coins.

\text{The total value of the coins}=\£85+\£55+\£12

\text{The total value of the coins}=\£152

Therefore, the total value of the coins contained in the bottle is £152.

4 0
3 years ago
Read 2 more answers
HELP QUICK!!!!!!!!!!
Mama L [17]

Answer:

Option is right

Step-by-step explanation:

Given that bella want to know what the students at her school think of her show. which is the BEST group to survey to find this information

For getting accurate results she must select a random sample without bias

For this option a will not serve since she selects only students she recognizes.

Option B may not be right, as during show on the face they may not give correct opinion

C is right as a random sample is taken

D is wrong as the first 30 students may not be at random.

So option C is right

8 0
3 years ago
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Why do purely competitive markets tend to benefit consumers over producers? Companies control quality and supply. Companies work
Tom [10]
In general, purely competitive markets tend to benefit consumers over producers because "<span>Consumers control price through demand". Although perfect competition is practically impossible. </span>
3 0
3 years ago
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Yall know the anwser to this​
Olenka [21]

-1(-1-9)= -1*-10= 10

6 0
3 years ago
a company pays 75% of each employee's Medical Care premium if the employee portion is $50 for a month and there are 100 employee
Romashka-Z-Leto [24]
Hope this helps
THE COMPANY PAY EACH MONTH FOR EMPLOYEE MEDICAL BENEFITS? can u ... $200 - $50 = $150 paid by company per employee ... For each employee the company pays 75%

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