Stella had 30 minutes to do a three-problem quiz. She spent 9 7/10
minutes on question A and 5 2/5 minutes on question B. How much time did she have left for question C?

Answer:

25x4 - 2

Step-by-step explanation:

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  25  is the square of  5

Check : 2 is not a square !!

Answer:

its d

Step-by-step explanation:

the arc length is equal to (radius x 2 x angles (60)) divided by 360 which comes to equal 8/3 then you multiply by pi

Answer:

26 and 27

Step-by-step explanation:

Answer:

5+(-15) is the given equation. We need to find the matching problem.

First, we need to identify each problem's equation.

A: 15+5

B: 5-15

C: 15-5

D: 5+(15)

I believe the answer is D, it happens to be closest to our given equation.

~Hope this helps~

Answer:

Part A

71°

Part B

The ladder is been used safely

Step-by-step explanation:

Part A

We solve the above question using Trigonometric function of Cosine

cos x = Adjacent/Hypotenuse

Adjacent = The distance between the house and the bottom of the ladder = 4 feet

Hypotenuse = Length of the ladder = 12 feet

x = Angle

Hence:

cos x = 4/12

cos x = 1/3

x = arc cos (1/3)

x = 70.528779366°

Approximately to the nearest degree

= 71°

Part B

According to the manufacturer, if the angle the ladder forms with the ground, x, is between 70° and 75°, then it meets safety standards. Is this ladder being used safely?

Angle x = 71°

Therefore, the ladder is been used safely

Answer:its c

Step-by-step explanation:

because i did that test and got a A+

Answer:

Step-by-step explanation:

The rule for reflection over the x-axis:

Apply the rule to the given points:

Correct option is C.

Answer:

Correct answer is

option c

Answer:

B

Step-by-step explanation:

5(4)-2(1)=

20-2=

18

Answer:

B

Step-by-step explanation:

Answer:

The answer is 133/900

Step-by-step explanation:

BECAUSE I SAID SO LOL

Answer:

To write 14.7 as a fraction you have to write 14.7 as the numerator and put 1 as the denominator. Now you multiply the numerator and denominator by 10 as long as you get in the numerator the whole number.

14.7 = 14.7/1 = 147/10

And finally, we have:

14.7 as a fraction equals 147/10

Step-by-step explanation:

Answer:

3 tiles will not fit together.

Step-by-step explanation:

Measure of an Interior angle of a polygon = [tex]\frac{(n-2)\times 180}{n}[/tex]

Here, n = number of sides of the polygon

Therefore, measure of the interior angles of a regular hexagon,

A = [tex]\frac{(6-2)\times 180}{6}[/tex]

A = 120°

Similarly, interior angle of the regular pentagon,

B = [tex]\frac{(5-2)\times 180}{5}[/tex]

B = 108°

Now m∠A + m∠B + m∠C = 360°

m∠C = 360° - (120° + 108°)

        = 132°

To fit the given three tiles perfectly, interior angle (∠D) of the third Octagonal tile should be 132°.

D = [tex]\frac{(8-2)\times 180}{8}[/tex]

D = 135°

m∠C ≠ m∠D

Therefore, 3 tiles will not fit together.

The polynomial is given as f(x) = (x - 5)(x + 1)(4x + 1).  

        f(x) = x² − 4x + 7.

Given is a polynomial with zeroes -

x = 5, x = - 1 and x = - 1/4

The given zeroes are -

      (x - 5) = 0

       (x + 1) = 0

       4x = - 1

       (4x + 1) = 0

So, we can write the polynomial as -

f(x) = (x - 5)(x + 1)(4x + 1)  

Therefore, the polynomial is given as f(x) = (x - 5)(x + 1)(4x + 1).  

To solve more questions on Equations, Equation Modelling and Expressions visit the link below -

brainly.com/question/14441381

#SPJ5

Answer:

52.50

Step-by-step explanation:

Answer:

by 12 months both prices will be 180.

Step-by-step explanation:

If you take 12 and multiply it by 10 because that is the monthly subscription, you will get 120 + 60 for the game which equals 180. But if you take 12 and multiply it by 15 you will also get 180.

Hope this helps

Answer: by 12 months both prices will be 180.

Step-by-step explanation:

If you take 12 and multiply it by 10 because that is the monthly subscription, you will get 120 + 60 for the game which equals 180. But if you take 12 and multiply it by 15 you will also get 180.

Yw.

Answer:

I think 1 and 5

Step-by-step explanation:

Answer:

it's 3/4 feet

Step-by-step explanation:

Answer:

sin(30°) = 0.5

sin(30°) is exactly: 1/2

Note: angle unit is set to degrees.

Step-by-step explanation:

Answer:

y = -10/3x - 5

Step-by-step explanation:

slope intercept form:

y = mx + b

10x - 3y = -15

subtract 10x from both sides of the equation

10x - 10x - 3y = -15 - 10x

3y = -15 - 10x

3y = -10x - 15

divide the equation by 3

3y/3 = -10x/3 - 15/3

y = - 10x/3 - 5

Answer:

10800

Step-by-step explanation:

100% -> 180000

6%-> 10800

Answer:

3a^5/4b^5

Step-by-step explanation:

The answer you have selected! :)

Answer:

It should be D

Step-by-step explanation:

Umm the ^2 and ^-2 cancel each other out and so do the ^3 and ^-3 and then all you have to do is simply simplify 6/8 = 3/4 bc half of 6 is 3 and half of 8 is 4

Answer:

0 solutions

Step-by-step explanation:

8x + 2y = 14

8x + 2y = 4  

4 not equal to 14

Answer:

1)  y = 2x - 5

2) y = -2/3x + 4

3) y = -2x - 11

4) y = -2 + 3

5) y = 4/3x - 9

6) y = 1/4x - 2

Step-by-step explanation:

Sorry if any wrong

Answer:

go search m  a t h w a y it will give you the answer and how did they get the answer

Step-by-step explanation:

Answer:

I'm making this up seems possible in life

Step-by-step explanation:

I had $0 in my bank account. I really wanted this jacket but it costs 120. I bought it anyways telling the bank I would pay them back. Now I have -120 dollar in my bank account.

Answer:

Tammie had started a fund-raising project and every time $120 was deposited it will e given to the less privileged.

So, she got her first $120 that was deposited from a boy into the account, and it was taken withdrawn 2 days later, and given to the less privileged.

Step-by-step explanation:

Brainiest

Answer:

C

Step-by-step explanation:

We have: (I rewrote the function)

[tex]f(z_n)={z_{n-1}} ^2+c[/tex]

Given that:

[tex]\displaystyle c=2-3i \text{ and } z_0 = 1 + 2 i[/tex]

The first iterate will be:

[tex]\displaystyle \begin{aligned} f(z_1)&=(z_0)^2+c \\ &=(1+2i)^2+(2-3i) \\ &= (1+4i+4i^2)+(2-3i) \\ &=1+4i-4+2-3i \\ &=-1+i \end{aligned}[/tex]

The second iterate will be:

[tex]\begin{aligned}f(z_2) &=(z_1)^2+c\\ &=(-1+i)^2+(2-3i) \\&= (1-2i+i^2)+(2-3i) \\&=1-2i-1+2-3i \\&=2-5i \end{aligned}[/tex]

And the third iterate will be:

[tex]\begin{aligned} f(z_3)&=(z_2)^2+c\\ &=(2-5i)^2+(2-3i) \\ &=(4-20i+25i^2)+(2-3i) \\ &=4-20i-25+2-3i \\ &=-19-23i \end{aligned}[/tex]

Hence, our answer is C.

Answer:

$288

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 18%/100 = 0.18 per year,

then, solving our equation

I = 3200 × 0.18 × 0.5 = 288

I = $ 288.00

The simple interest accumulated

on a principal of $ 3,200.00

at a rate of 18% per year

for 0.5 years is $ 288.00.

Answer:

[tex]\boxed{\textsf{ The value of the polynomial at p = (-2) is \textbf{ -37}.}}[/tex]

Step-by-step explanation:

A polynomial is given to us and we need to find its value at p = (-2) . The given polynomial is :-

[tex]\sf\implies p(x)= 3x^3 -x^2 +2x-5[/tex]

Also second part of the question says what does this tell about the factors of p(x) .

On putting p = (-2) :-

[tex]\sf \implies p(x)= 3x^3 -x^2 +2x-5 \\\\\sf\implies p(-2) = 3 (-2)^3-(-2)^2+2(-2)-5 \\\\\sf\implies p(-2)= 3\times (-8) -4 -4 -5 \\\\\sf\implies p(-2)=-24-4-4-5 \\\\\implies \boxed{ \pink{\sf p(-2)= (-37) }}[/tex]

Now this tells us that ( x + 2 ) is not a factor of the given polynomial. When we divide the given polynomial by (x + 2) then the remainder will be -37 .

Answer:

B

Step-by-step explanation:

B] The rate of feet per a second is 30 therefore it is B.

Answer:

36...? After doing all of the incorrect math.. I got 36. Sry if it's wrong.

Step-by-step explanation:

I suck at math. :/

Answer:

[tex]\frac{1}{2}[/tex]

Step-by-step explanation:

28(1/2)=14

14(1/2)=7

7(1/2)=3.5

plz mark me brainliest. :)