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3 years ago

Question 3: Find the vertex of - x2 - 4x + 12

Mathematics

1 answer:

tatuchka [14]3 years ago

4 0

Answer:

A. (-2,16)

Hope this helps :)

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Anna said that the product of 7/8 · 1 1/2 = 7/2<br><br>How can you tell that her answer is wrond?

Mazyrski [523]

Here is your answer:

1 1/2 = 3/2

7 × 3 = 21

8 × 2 = 16

Divided to equal $1\frac{5}{16}$ <--- Real answer:

The reason why she multiplied her answer wrong, she also "kept her original numerator and denominator."

Hope this helps!

5 0

3 years ago

Which equation is equivalent to the given equation?

emmainna [20.7K]

Answer:

D. (x – 3)^2 = 17

Step-by-step explanation:

We assume you want an equivalent to x^2 -6x = 8.

We can complete the square by adding the square of half the x-coefficient to both sides of the equation.

x^2 -6x +(-6/2)^2 = 8 +(-6/2)^2

(x -3)^2 = 17 . . . . simplify

3 0

2 years ago

A Ferrari drove 300 kilometers in one and a half hours. How fast was the car going?

irga5000 [103]

I'm assuming you mean how many mph when you refer to how fast the car was going.

So 300 km = 1.5 hrs

1.) Find the number of km per hour
Since we have the equation 300km = 1.5hr, we can just divide 1.5 (to isolate the number of hours) on both sides.

You should get 200 km = 1 hour

2.) Convert km to miles
To do this, you must know the conversion 1 km = 0.621371192 miles

So to convert 200 km to miles, just multiply 200 x 0.621371192.

You should get 124.274238.

That means the Ferrari drove at a pace of roughly 124 mph :)

8 0

3 years ago

Read 2 more answers

Investigate the difference between compounding annually and simple interest

Gennadij [26K]

Step-by-step explanation:

Simple interest formula

$A = P (1 + rt)$

Compound interest formula

$A = P(1 + \frac{r}{n})^{nt}$

$A = 5000 (1 + 0.025*1)\\A=5000(1.025)\\A=5125$

Simple interest is $125

. $A = 5000 (1 + \frac{0.025}{1})^{1*1} \\A=5000(1.025)\\A= 5125$

Compound interest is $125

c. the result for both a and b are the same

$A = 5000 (1 + 0.025*3) \\A=5000(1.075) \\A=5375$

the simple interest is $375

. $A = 5000 (1 + \frac{0.025}{1})^{1*3}] \\A=5000(1.025)^3 \\A=5000(1.077)\\A= 5385$

the compound interest is $385

f. the result compared, compound interest is $10 more than simple interest

$A = 5000 (1 + 0.02*6) \\A=5000(1.12) \\A=5600$

the simple interest is $600

$A = 5000 (1 + \frac{0.02}{1})^{1*6}] \\A=5000(1.12)^6 \\A=5000(1.9738) \\A= 9869$

the compound interest is $4869

i. the result from g and h, h is over 8 times bigger than g.

j. interest compound annually is not the same as simple interest, only for the case of a and b seeing that it is for 1 year. but for 2years and above there is difference as seen in c to h

6 0

3 years ago

3/10 divided by -3/7

Sav [38]

Answer:

- 7/10

Step-by-step explanation:

There you go hope alls well.

5 0

2 years ago

Read 2 more answers