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disa [49]
2 years ago
7

Valuate 2y when y =​

Mathematics
1 answer:
PtichkaEL [24]2 years ago
6 0

Step-by-step explanation:

Please what is the value of y

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What is the equation in vertex form of a parabola with vertex (-2, -2) that opens downward and is stretched by a factor of 5?
Galina-37 [17]

Answer:

D).  -5(x + 2)^2 - 2.

Step-by-step explanation:

Parabola which Opens down and vertex (-2, -2) is :

f(x) = a(x + 2)^2 - 2 where a is negative

Stretch by factor 5 gives:

-5(x + 2)^2 - 2.

5 0
3 years ago
Exhibit 15-2A regression model between sales (y in $1000s), unit price (x1 in dollars) and television advertisement (x2 in dolla
Semmy [17]

Answer:

Sales are expected to increase positively.

Step-by-step explanation:

The model is y =7-3*X1+5*X2

Here, y is the depended variable and X1 and X2 are independent variable.  

Holding the unit price constant X2 (television advertisement) is increase by $1 dollar

SSR= 3500

SSE=1500

So, TSS = SSR+SSE = (3500+1500) = 5000

Now r^2= 1 - (SSR/TSS) = 1 - (3,500/5,000) = 1 - 0.70 = 0.30

So, the sample correlation coefficient (r) = (0.3)^(1/2) = 0.547

We can conclude that sample correlation indicates a strong positive relationship.

7 0
3 years ago
If f(x)= 3x2- 2x + 3 then find what f(3) is equal to
Anettt [7]

Answer:

Answer is 24

Step-by-step explanation:

given \: f(x) = 3 {x}^{2}  - 2x + 3 \\ to \: find \: f(3) \ : \:  ? \\ f(3) = 3( {3}^{2} ) - 2(3) + 3    \\ = 3(9) - 6 +3 \\  = 27 - 3 \\  = 24

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!!
diamong [38]
DE. AB, is going up BC, isn't decreasing or increasing. CD, isn't decreasing or increasing. Therefore your answer is DE.
8 0
3 years ago
Read 2 more answers
PLS HELP ME!
sveta [45]

Answer:

Hi

Step-by-step explanation:

the answer is :

4 \sqrt{7}  + 8 = x \\ aproximatly  \: 18.58

with phithaghoreth law you can find the base of the two triangles

and then you sum

if you need more explanation tell me

5 0
3 years ago
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