I just need a bit more clarification (just checking if my answer is right)
I put: C
But I just want more clarification.

Answer:

44

Step-by-step explanation:

f(x) = -7x + 5x^2 + 10

f(-2) = -7(-2) + 5(-2)^2 + 10

= 14 + 20 + 10

= 44

Answer:

0.072

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

"Find the number if 12% of IT is 10% of 6."

"It" means "the number," and we can represent this number as "x."

So,

12% * x = 10% * 6

3/25x=3/5

x=5

So, the number is 5.

(This problem really isn't that hard lol)

Answer: Your answer is A. Hope this helps!

Answer:

A

Step-by-step explanation:

Answer:

He needs to score 100 in his next test.

Step-by-step explanation:

The average of the exams is given by the sum of each exam score divided by the number of exams he took, therefore his prior average is:

[tex]\text{prior average} = \frac{\text{prior sum of grades}}{\text{prior number of tests}}[/tex]

Since he took five exams and had an average of 88, then his prior sum of grades is:

[tex]\text{prior sum of grades} = 88*5 = 440[/tex]

He needs to score "x" in his next test in order to have an 90 average, therefore if we add "x" to the sum of his grades and add 1 to the prior number of tests then equal that to 90, we can solve for "x". We have:

[tex]\text{desired average} = \frac{\text{prior sum of grades} + x}{\text{prior number of texts}+1}\\90 = \frac{440 +x}{6}\\440 + x = 90*6\\x = 540 - 440\\x = 100\\[/tex]

He needs to score 100 in his next test.

Answer:

What's your question dude ? The screen is black.

Answer:

12546

Step-by-step explanation:

9.5% = 0.95 = 95

12,640 - 95 = 12546

Answer:

9 Yes

10 No

Step-by-step explanation:

5^2+12^2

25+144=169

13^2=169

169=169

12^2+16^2

144+256=400

19^2=361

400 does not =361

Answer:

9: Yes

20: No

Step-by-step explanation:

You're welcome

Answer:

B. 7m

Step-by-step explanation:

She has 7 classes a day (3+4), and each takes the same number of minutes. If m stands for minutes per class, you can find the total minutes per day by multiplying 7 by m. Therefore the answer is 7m.

Example: Let's say a class takes 30 minutes, you would put 30 in the place of m, 7x30=210, so she would be teaching 210 minutes of yoga class each day.

soupsoupsoup soupsoupsoup

Answer:

40:20

Step-by-step explanation:

60 campers-40 girls= 20 boys

Explanation:

this is how you can find out the median value:

step 1: select the 2 numbers in the middle.

step 2: add the 2 numbers

step 3: once you get the sum of the 2 numbers, divide them by 2

then, you can get you median value!

Answer:

5+3=8

8 divided by 2 = 4

therefore, the median value would be 4.

hope this helps!

#zunairazrydhangirl1

for more help check out khanacademy.org , it really helps in my opinion!

no

i have no idea what to do

Answer:

Step-by-step explanation:

Answer:

[tex](x-5)^2+(y-2)^2=9\\[/tex]

Step-by-step explanation:

So, you basically want the equation of the circle.

Given:

Center(C): [tex]C(5, 2)[/tex]

[tex]r=3[/tex]

The equation of circle is:

[tex](x-h)^2+(y-k)^2=r^2\\[/tex]

Where, [tex](h, k)[/tex] represents the center point and [tex]r[/tex] is the radius of the circle.

Plotting the values in the equation:

[tex](x-5)^2+(y-2)^2=3^2\\[/tex]

[tex](x-5)^2+(y-2)^2=9\\[/tex]

This is the equation of the circle of center (5, 2) and radius 3.

Answer:

(x-5)2 + (y -2)2 = 9

Step-by-step explanation:

The answer is the top one to the right

The graph that represents the function g(x) = 2(0.5)ˣ -1 is given.

In mathematics, a graph is a visual representation or diagram that shows facts or values in an ordered way.

The relationships between two or more items are frequently represented by the points on a graph.

Given expression,

g(x) = 2(0.5)ˣ -1

To draw the graph take x = 0, 1,2, -1 , -2 and so on .

And draw these numbers in the graph.

Take x=0

g(0) = 1

the point is (0,1)

And now , take x = 1

g(1) = 0

the point is (1,0)

Take x =-1

g(-1) = 3

The point is (-1,3)

Therefore, the graph is given in the image.

To learn more about the line graph;

https://brainly.com/question/23680294

#SPJ5

Answer:

500 mg Carbon Monoxide

1100 mg Carbon Dioxide

Step-by-step explanation:

Weight of total sample = 1600 mg

Percentage of Carbon in Carbon Monoxide = 43%

Percentage of Carbon in Carbon Dioxide = 27%

Percentage of carbon in Mixture = 32%

Let amount of Carbon Monoxide = [tex]x[/tex] mg

Amount of Carbon Dioxide in mixture = (1600-[tex]x[/tex]) mg

Amount of carbon in [tex]x[/tex] mg of Carbon Monoxide =

[tex]x \times 43\%\\\Rightarrow x \times \frac{43}{100} ...... (1)[/tex]

Amount of carbon in (1600-[tex]x[/tex]) mg of Carbon Monoxide =

[tex](1600-x) \times 27\%\\\Rightarrow (1600-x) \times \frac{27}{100}......(2)[/tex]

We know that the sample of 1600 mg contains carbon because of Carbon Monoxide and Carbon Dioxide present in it.

Adding (1) and (2) and equating to 32% of 1600 mg:

[tex]x \times \dfrac{43}{100} + (1600-x) \times \dfrac{27}{100} = 1600 \times \dfrac{32}{100}\\\Rightarrow x \times (43-27) = 1600 \times (32-27)\\\Rightarrow 16x = 1600 \times 5\\\Rightarrow x =500[/tex]

Amount of Carbon Monoxide in sample,[tex]x[/tex] = 500 mg

Amount of Carbon Dioxide in sample = (1600 - [tex]x[/tex]) = (1600 - 500) = 1100 mg

Hence, answer is

500 mg Carbon Monoxide

1100 mg Carbon Dioxide

Answer:

The diameter measures 18 inches.

Step-by-step explanation:

The variable 'd' usually stands for diameter in math.

Answer:

see below

Step-by-step explanation:

d = 18 inches

This  means  the diameter of the circle is 18 inches

From one side of the circle to the other side of the circle, going through the center is 18 inches

Answer:

because it is a circular track idk....i aint smart enough for this...also because its a lap and not a straight line...and idk waht velocity is soooo

Step-by-step explanation:

Answer:

23/25

Step-by-step explanation:

Answer:

23/25

Step-by-step explanation:

Answer:

2520 in³

Step-by-step explanation:

The volume of a prism is calculated as

V = Ah ( A is the area of the base and h the height )

A = [tex]\frac{1}{2}[/tex] bh( b is the base and h the height ), thus

A = [tex]\frac{1}{2}[/tex] × 14 × 18 = 7 × 18 = 126 in²

V = 126 × 20 = 2520 in³

Screenshot:

y intercept = 0 , 2.5

x intercept = 3.5 , 0

Answer:

y- intercept = (0, 2.5)

x- intercept = (3.5, 0)

Step-by-step explanation:

y- intercept = (0, 2.5)

x- intercept = (3.5, 0)

Answer:

x > -2

Step-by-step explanation:

Domain is the range is of all possible value for x  in y=  f(x) .

Domain of logarithmic function  log(x) is given by x > 0.

It means any value can greater than x can be plugged in place of x in function log(x).

In the given function  Y= In(x+ 2). In place of x there x+2 .

Thus x+2> 0

subtracting -2 from both sides

=>  x+2 -2> 0-2

=> x > -2

Thus, domain of the function Y= In(x+ 2) is x > -2

Answer:

x = 5  to the nearest tenth = 0.0

Step-by-step explanation:

Step  1  :

Solving a Single Variable Equation :

1.1      Solve  :    x-5 = 0  

Add  5  to both sides of the equation :  

                     x = 5

Answer:  x = 5 nearest tenth = 0.0

Rounded to the nearest 0.1 or

the Tenths Place.

Hope this helps.

Answer:

x = 5  to the nearest tenth = 0.0

Step-by-step explanation:

Answer:

Mean - 7

Median - 7.5

mode - 9

range - 6

Hope it helps u

Answer:

m = 4

Step-by-step explanation:

3m -3 = 9

Add 3 to each side

3m -3+3 = 9+3

3m = 12

Divide each side by 3

3m/3 = 12/3

m = 4

Answer:

238 x^2+14

Step-by-step explanation:

Factor out 14 from the expression.

Solution= 14( 17x^2+1)

Answer:

C

Step-by-step explanation:

quotient-division

product-multiplication

(then the answer is multiplied by n not 8n)

BRAINLIEST LOL :)

Answer:

C

Step-by-step explanation:

Answer:

choice 1

Step-by-step explanation:

Given

V = πr²h ( isolate r² by dividing both sides by πh )

[tex]\frac{V}{\pi h}[/tex] = r² ( take the square root of both sides )

[tex]\sqrt{\frac{V}{\pi h} }[/tex] = r ← the positive value of r

Answer:

5/9

Step-by-step explanation:

9/9 minus 4/9 is 5/9

Answer:

5/9

Step-by-step explanation:

4/9 + 5/9 = 9/9

I also searched it up to make sure it was correct.

Answer:

[tex]\displaystyle \tan \left(\frac{7\pi}{8}\right) = -\left(2 + \sqrt{2}\right)[/tex].

Step-by-step explanation:

Assume that the following are known:

The angle in question [tex]\displaystyle \frac{7 \pi}{8}[/tex] isn't very well-known. However, note that:

Since the angle [tex]\displaystyle \frac{7\pi}{4}[/tex] is equal to [tex]\displaystyle 2\pi - \frac{\pi}{4}[/tex], its sine and cosine can be found from the sine and cosine of [tex]\displaystyle \frac{\pi}{4}[/tex] using the trigonometric identities [tex]\sin(2\pi - \theta) = -\sin(\theta)[/tex] and [tex]\cos(2\pi - \theta) = \cos(\theta)[/tex]:

Apply the tangent half-angle identity to find the tangent of [tex]\displaystyle \frac{7 \pi}{8}[/tex]:

[tex]\begin{aligned}\tan\left(\frac{7\pi}{8}\right) &= \tan\left(\frac{7\pi/4}{2}\right) = \frac{1 - \cos(7\pi/4)}{\sin(7\pi/4)} \\ &= \frac{1 - \left(\sqrt{2}/2\right)}{\sqrt{2} / 2} = \frac{2 - \sqrt{2}}{\sqrt{2}} = \frac{\left(\sqrt{2}\right)^2 - \sqrt{2}}{\sqrt{2}} = \sqrt{2} - 1 \end{aligned}[/tex].