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3 years ago

What are the coordinates of the vertex of y = x2 – 2x – 7?

1 answer:

6 0

Rearrange to vertex form:-

y = x^2 - 2x - 7
y = (x - 1)^2 - 1 - 7
y = (x - 1)^2 - 8

The vertex is at the coordinates (1, -8)

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$16,000 is borrowed from a bank over a period of 4 years with a simple interest rate of 9% . How much is paid back altogether?

lbvjy [14]

Answer:

Step-by-step explanation:

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2 years ago

In a recent survey, 10 percent of the participants rated Pepsi as being "concerned with my health." PepsiCo's response included

Vanyuwa [196]

Answer: What what my you explain shorter please

Step-by-step explanation:

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2 years ago

29÷1,334 use long division I am

MA_775_DIABLO [31]

Answer: 46 r0

Step-by-step explanation: JUST IMAGINE THE LINES

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2 years ago

Multiply. Write the answer in simplest form.

Roman55 [17]

Answer:

88,306

Step-by-step explanation:

Multiplying times 7 steps:

Step 1. 8 x 7 = 56

Step 2. 1 x 7 = 7

Step 3. Add the 5 from step 1. 7 + 5 = 12

Step 4. 3 x 7 = 21

Step 5. Add the 1 from step 3. 21 + 1 = 22

Step 6. 1 x 7 = 7

Step 7. Add the 2 from step 5. 7 + 2 = 9

Equals = 9226

Steps for times 6:

Step 1. 6 x 8 = 48

Step 2. 1 x 6 = 6

Step 3. Add the 4 from step 3. 6 + 4 = 10

Step 4. 3 x 6 = 18

Step 5. Add the 1 from step 3. 18 + 1 = 19

Step 6. 1 x 6 = 6

Step 7. Add the 1 from step 5.

Equals = 79080

Now add the two 9226 + 79080 = 88, 306

Took me a while to work out and explain lol.

6 0

2 years ago

Use the law of cosines to find the balue of cos 0 . Round to answer to two decimal places

chubhunter [2.5K]

Answer:

Step-by-step explanation:

Using the law of cosines then cosΘ is the following quotient

cosΘ = $\frac{a^2+b^2-c^2}{2ab}$

where a = 5.8, b = 10.5 and c = 10.9

cosΘ = $\frac{5.8^2+10.5^2-10.9^2}{2(5.8)(10.5)}$

= $\frac{33.64+110.25-118.81}{121.8}$

= $\frac{25.08}{121.8}$ = 0.21 → C

6 0

2 years ago