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3 years ago

Evaluate the expression for x =5 and y= 1 (x-7y)² pretty confused

Mathematics

2 answers:

Ghella [55]3 years ago

7 0

Answer:

49y^2+y-25=0

Step-by-step explanation:

(5_7y)^2=25-49y^2

y=25-49y^2=49y^2+y-25=0

sveticcg [70]3 years ago

5 0

Answer:

-4

Step-by-step explanation:

So since x=5 and y= 1 the new expression would be 1(5-7) to the second power. Using pemdas, 5-7 is -2. -2 to the second power is -4. negative 4 times 1 is negative 4.

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Which of the following describes the transformations of g (x) = negative (2) Superscript x + 4 Baseline minus 2 from the parent

o-na [289]

Answer: First option.

Step-by-step explanation:

Below are some transformations for a function $f(x)$ :

1. If $f(x)+k$ , the function is shifted "k" units up.

2 If $f(x)-k$ , the function is shifted "k" units down.

3. If $f(x-k)$ , the function is shifted "k" units right.

4. If $f(x+k)$ , the function is shifted "k" units left.

5. If $-f(x)$ , the function is reflected over the x-axis.

6. If $f(-x)$ , the function is reflected over the y-axis.

Then, given the parent function $f(x)$ :

$f(x)=2^x$

And knowing that the the other function is:

$g(x)=-2^{(x+4)}-2$

You can identify that the function $g(x)$ is obtained by:

- Shifting the function $f(x)$ 4 units left.

- Reflecting the function $f(x)$ 4 over the x-axis.

- Shifting the function $f(x)$ 2 units down.

7 0

3 years ago

An Urn contains two white marbles and one black marble. A marble is drawn from the Urn without replacement and put aside without

algol [13]

Answer:

Step-by-step explanation:

No. Of white marble n(W) = 2

No. Of black marble n(B) = 1

Total no. Of marble N = 2 + 1 = 3

Prob(1st is white) = n(W)/N = 2/3

Prob(1st is black) = n(B)/N = 1/3

4 0

4 years ago

What is $20.00 less than 2.5 times the amount of $64.80

Lera25 [3.4K]

Ok so first you take $64.80 and multiply it by 2.5. You get $162. Now take $162 and subtract $20 from it. You are left with $142.

6 0

4 years ago

Read 2 more answers

Rewrite the following equation in standard form. y=4x+10

Virty [35]

standard from Ax +By = C

y = 4x+10

subtract 4x from each side

-4x+y = 10

or 4x - y = -10

3 0

3 years ago

A map of Rockbridge County has a scale factor of

malfutka [58]

Answer: 6 inch

Step-by-step explanation:

From the question, we are informed that a map of Rockbridge County has a scale factor of 2.5 in = 5 miles.

When the actual distance from Fairfield to Lexington is 12 miles, the distance on the map will be:

= 12/5 × 2.5

= 2.4 × 2.5

= 6 inch

6 0

3 years ago