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2 years ago

Find the value of x.

Mathematics

2 answers:

Zina [86]2 years ago

6 0

Answer:

Step-by-step explanation:

if you subtract 55 from 90 and divide it by 5 then you get your answer, which is C:7

Andrews [41]2 years ago

6 0

Answer: 7

Step-by-step explanation: This is a adjacent angle, meaning they've a common vertex and side but don't overlap.

In the problem...

This is a right and acute angle. So, we can subtract 90 by 55 to find the value of x.

90 - 55 = 35. We're not done yet. In the problem, it says 5x. We'll need to divide 35 by 5 to get our answer.

35 ÷ 5 = 7

Hence, 7 is the answer.

Let me know of any questions or concerns.

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Height

dem82 [27]

Answer:

Step-by-step explanation:

Given the height of the discus can be modeled by the equation y=−16x ^2 +32x+4, where y represents the height in feet of the discus in seconds, the velocity of the discus at its maximum height is zero.

Velocity v = dy/dx = 0

dy/dx = -32x + 32

0 = -32x + 32

32x = 32

x = 1 secs

Hence it will take the discus 1 secs to reach its maximum height

8 0

3 years ago

Two squares have sides 12cm and 4cm respectively. What is the ratio of their sides

Nookie1986 [14]

Answer:

3 : 1

Step-by-step explanation:

We have to compare the value of two sides.

Ratio of sides = 12 : 4 = $\dfrac{12}{4}=\dfrac{4*3}{4*1}=\dfrac{3}{1}$

= 3 : 1

6 0

2 years ago

Transform the given quadratic function into vertex form f(x) = quadratic function into vertex form f(x) = quadratic function int

melisa1 [442]

Answer:

Vertex form: $f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}$

The vertex is $(-\frac{7}{2},-\frac{53}{4})$

Step-by-step explanation:

For a general quadratic function the form is:

$ax ^ 2 + bx + c$

For the function

$f(x) = x ^ 2+ 7x -1$

The values of the coefficients for the function are the following: $a = 1$ , $b =7$ , $c = -1$

Take the value of b and divide it by 2. Then, the result obtained squares it.

$\frac{b}{2}= \frac{7}{2}$

$(\frac{b}{2})^2=(\frac{7}{2})^2=\frac{49}{4}$

Add and subtract $\frac{49}{4}$

$f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1$

Write the expression of the form

$f(x) = (x+\frac{b}{2})^2 +k$

$f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}$

The vertex is $(-\frac{7}{2},-\frac{53}{4})$

6 0

3 years ago

Please help me I’m struggling

zhannawk [14.2K]

Answer:

-2\3

Step-by-step explanation:

3 0

3 years ago

Bacteria can multiply at an alarming rate when each bacteria splits into two new cells, thus doubling. if we start with only one

stepladder [879]

Answer:

Roughly 16 million bacteria.

Step-by-step explanation:

Multiply the rate of the bacteria going through mitosis times the amount of daughter cells per hour, for this case.

<em>r x (m)ms x hr</em> <em>= </em>bacteria in one day

Hope this helps!

<em>note: ms and hr are millisecond and hour</em>

6 0

2 years ago