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konstantin123 [22]
3 years ago
13

Find the value of x. 48 (7x + 13) A. 7 B. 11 C. 3 D. 5

Mathematics
1 answer:
Lesechka [4]3 years ago
3 0
The value of x is D. 5
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Write the equation of the line -6x – 4y = 28 in slope-intercept form
goblinko [34]

Answer:

y=-3/2x-7

Step-by-step explanation:

8 0
3 years ago
If a 30-foot silo casts a 20-foot shadow, what is the approximate measure from the tip of the shadow to the top of the silo?
KATRIN_1 [288]

9514 1404 393

Answer:

  (d)  36 feet

Step-by-step explanation:

Use your sense of geometry.

The hypotenuse of a right triangle will never be less than the longest side, and will never be greater than 1.5 times the longest side*.

That means the only reasonable answer choices will be between 30 and 45 feet. There is only one such choice.

The measure is about 36 feet.

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If you like, you can find a more exact value using the Pythagorean theorem. The distance d of interest is ...

  d^2 = 20^2 +30^2 = 1300

  d = √1300 = 10√13 ≈ 36.0555 ≈ 36 . . . feet

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* The longest hypotenuse will be √2 ≈ 1.4142 times the longest right triangle leg when the two legs are equal length.

3 0
3 years ago
What is the change that occurs to the parent function f(x) = x^2 given the function f(x) = 2(x + 2)^2 + 1.
nikitadnepr [17]

Answer:

The graph is stretched by a factor of 2, moves 2 units to the left, and 1 unit up.

Step-by-step explanation:

The base of the quadratic function is

f(x) =  {x}^{2}

We can transform this function to look narrower or wider.

Looking narrower is termed a stretch.

This happens when a>1

Looking wider is termed a compression.

This happens when 0<a<1

We can also

g(x) = a {(x   + h)}^{2}  + k

+h moves the parent graph to the left by h units

-h moves the parent graph to the left by h units.

+ k moves the parent function up by k units

- k moves the parent function down by k units.

The change that occurs to

f(x) =  {x}^{2}

given

f(x) = 2( {x  + 2)}^{2}  + 1

is that, the graph is stretched by a factor of 2, moves 2 units to the left, and 1 unit up

Therefore the last choice is the correct answer.

3 0
3 years ago
Triangle ABC is transformed to triangle A'B'C', as shown below:
nordsb [41]

Answer:

<em>d). = m∠BCA = m∠B'C'A'</em>

Step-by-step explanation:

d). = m∠BCA = m∠B'C'A'

4 0
3 years ago
Read 2 more answers
You lose 5 points for every wrong answer in a trivia game. What integer represents the change in your points after answering 8 q
nata0808 [166]
Your answer would be -40. :-)
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3 years ago
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