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3 years ago

Help meee plz with the right question plz i need this plz

Mathematics

1 answer:

Flura [38]3 years ago

3 0

So what would you like to know, square inches or area?

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Life or death situation!!! Can someone please help me with this

Ainat [17]

Q = D+8

25Q + 10D = 550

Sub Q into the 2nd equation,

25(D+8) + 10D = 550

25D+200 + 10D = 550

35D = 350

D = 10 dimes

Q = 18 quarters

3 0

3 years ago

Just need help with this question

Nitella [24]

we know the diameter of the circle is 54, so the radius of it is half that or 27.

$\textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=27 \end{cases}\implies A=\pi (27)^2\implies \stackrel{using~\pi =3.14}{A=2289.06~mi^2}$

6 0

3 years ago

Please solve both with explanation, I’ll give brainliest

DiKsa [7]

1st and 2nd pictures are for finding area and 3rd picture is for finding perimeter

hope you understood well and if not and you can ask again

4 0

3 years ago

For the function f(x)=ax^3+bx^2-5x+9, determine the values of a and b so that f(-1)=12 and f'(-1)=3

Alecsey [184]

f(x) = ax ³ + bx ² - 5x + 9

then

f '(x) = 3ax ² + 2bx - 5

Given that f (-1) = 12 and f '(-1) = 3, we get the system of equations

-a + b + 5 + 9 = 12

3a - 2b - 5 = 3

-a + b = -2

3a - 2b = 8

Multiply through the first equation by 2 and add it to the second one to eliminate b and solve for a :

2(-a + b) + (3a - 2b) = 2(-2) + 8

-2a + 2b + 3a - 2b = -4 + 8

a = 4

Substitute this into the first equation above to solve for b :

-4 + b = -2

b = 2

4 0

3 years ago

Please help find the value of x and show me steps so I can try to learn it!!

fiasKO [112]

Answer:

$x = 30$

Step-by-step explanation:

If we take a look at the given picture, we can see that both sides are almost completely identical, so they must almost have the same value.

Let us do the plug in. Keep in mind that the angle is obtuse, meaning over 90 degrees, and angle identical or lower than 90 is incorrect.

$x=18$

$(x + 90)°$

$(18 + 90) = 108$

True.

$4x$

$4(18) = 72$

False. Meaning the 18 would not work.

x = 22.5

$(22.5 + 90) = 112.5$

True.

$4(22.5) = 90$

False. Meaning that 22.5 does not work.

x = 30

$(30+90) = 120$

True.

$4(30) = 120$

True. Meaning that 30 is the answer and can work.

x = 54

$(54+90) = 144$

True.

$4(54) = 216$

False. Although the angle is larger than 90, 180 is a straight line, and we can see that the angles given are not straight lines or greater.

5 0

3 years ago