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3 years ago

Just need help on the bottom two!!

Mathematics

1 answer:

Kaylis [27]3 years ago

7 0

For 3. the triangle with 4,4,5 is similar to the one with 8,10 because you can scale it down by 2 or because it is similar in shape
4. X=-3

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Can you please help meeeeeeee

Ahat [919]

The outlier would be 68

4 0

2 years ago

Compute the balance of $12,000 invested at APR of 4.4% for 18 yrs

Vadim26 [7]

Answer: the final ballance is 26445.35

The total compound interest is $14,455.35.

5 0

2 years ago

What are the coordinates of the vertex of the parabola with the equation y = x + 2x - 3?

loris [4]

Answer:

<em>The coordinates of the vertex are (-1,-4).</em>

Step-by-step explanation:

<u>Equation of the Quadratic Function </u>

The vertex form of the quadratic function has the following equation:

$y-k=a(x-h)^2$

Where (h, k) is the vertex of the parabola that results when plotting the function, and a is a coefficient different from zero.

We are given the function:

$y=x^2+2x-3$

We must transform the equation above by completing squares:

The first two terms can be completed to be the square of a binomial. Recall the identity:

$x^2+2xy+y^2=(x+y)^2$

Thus if we add and subtract 1:

$y=(x^2+2x+1)-3-1$

Operating:

$y=(x^2+2x+1)-4$

The trinomial in parentheses is a perfect square:

$y=(x+1)^2-4$

Adding 4:

$y+4=(x+1)^2$

Comparing with the vertex form of the quadratic function, we have the vertex (-1,-4).

The coordinates of the vertex are (-1,-4).

4 0

2 years ago

The average of your first 6 tests is 82. If your test average after your seventh test is an 80.5, what did you score on the seve

mart [117]

So average is of the first 6 tests is 82 well that means

(test1 + test2+ test3+ test4 + test5+test6)/6 = 82

so now let do some cross multiplliying

test1 + test2 + test3 + test 4 + test5 +test6 = 82*6

test1 + test2 + test3 + test 4 + test5 +test6 = 492

now lets see if we can find that 7th test score

(test1 + test2 + test3 + test4 + test5 +test6 + test7)/7 = 80.5

So look we found test1 + test2 + test3 + test4 + test5 +test6 to be 492 so lets substitute.

(492 + test7 )/7 = 80.5

test7 = (80.5*7)-492 = 71.5

7 0

3 years ago

12 times a number plus 26 greater than 6

weeeeeb [17]

Answer:I am a little confused by your wording but I am assuming the question is 12 times what is 26 greater than 6

The answer would be 2.66666666667 which sound incorrect but multiply by 12 and you get 32 and 6 + 26= 32

Step-by-step explanation:

8 0

2 years ago