What value of c makes the polynomial below a perfect square?

Answer:

∠BDC=43°

Step-by-step explanation:

Since ABCD is a rectangle, ∠ADC=90

∠ADC=∠BDC+∠ADB

90=(7x+1)+(9x-7)

90=16x-6

16x=96

x=6

∠BDC=7x+1

=7(6)+1

=42+1=43

Answer:

5

Step-by-step explanation: im doing the questions now

Answer:

the first answer is 5.

the second answer is a.

Step-by-step explanation:

i think it B

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Answer:

The answer is C

I hope this helped.

Answer:

the answer is d

Step-by-step explanation:

angles sum: 180(6-2) = 720

50 + 37 + 42 = 129

129 + 5x + 7x - 1 + 3x + 40 = 720

15x + 168 = 720

15x = 552

x = 36.8

check:

129 + 5(36.8) + (3(36.8) + 40) + (7(36.8) - 1) = 720

Correct answer??

180-50 = 130

180-37 = 143

180-42 = 138

Known internal angles:

130 + 143 + 138 = 411

15x + 39 + 411 = 720

15x = 270

x = 18

Answer:

do you have to add the numbers together or multiply

Answer:

Solution given:

laternal section area =perimeter of triangle×length

=(15+8+17)×9=360mm²

Answer:

26 ft

Step-by-step explanation:

A=bh

40= 8h

h=5

P=2(l+w)

P= 2(8+5)

P = 2(13)

P = 26

Answer:

0.55

Step-by-step explanation:

The numerator of the fraction with a denominator of 100 is the number you put on the right of the decimal pt.

Answer:

0.55

Step-by-step explanation:

55/100 = 0.55

You just move decimal two places to the right. Hope this helps, thank you :) !!

Answer: 1 m is 9 there are 7 m so 7X9 =63

Step-by-step explanation:

Answer:

the answer would be 9

expination:

because 63 divide by 7 would be 9

Answer:

0

Step-by-step explanation:

Distribute:

=(6)(3x)+(6)(−5)+(2)(3x)+(2)(−5)+(−8)(3x)+(−8)(−5)

=18x+−30+6x+−10+−24x+40

Combine Like Terms:

=18x+−30+6x+−10+−24x+40

=(18x+6x+−24x)+(−30+−10+40)

=0

Answer:

632

Step-by-step explanation:

7 Days are in a week. 4,424 days total, 4,424 divided by 7 would equal 632

Answer:

4424/7=632 so there are 632 weeks.

Answer:

b is 9

Step-by-step explanation:

okay

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Answer:

its 9 this has to be at least 20 characters

Answer:

Step-by-step explanation:

BCDE is rotated 180° counterclockwise to form JKLM.

JKLM is rotated 180° clockwise to form BCDE

JKLM is rotated 180° counterclockwise to form BCDE.

Answer:b c d

Step-by-step explanation:

i failed so you can sucseed

Answer:

b divide both sides by 6

Step-by-step explanation:

6a = 72 if you divided each side by 6 you will get

a = 12 which would bring you to the actual answer.

Answer:

Axis of symmetry: [tex]-\frac{3}{7}[/tex]

The y-intercept: y= (0, -8)

The vertex is: [tex]( -\frac{3}{7} , -\frac{65}{7} )[/tex]

Step-by-step explanation:

My work is shown in the images... :)

I hope I helped, and I always appreciate brainliest!!!  :)

#3 maybe be wrong, sorry if it is

so it will end up at 6y-6

you need to combine everything that does not have an exponent (example. a, x, y) and you combine the ones that have exponents together. and therefore you get 6y-6 (remember positive and negative signs)

Answer:

0

Step-by-step explanation:

6 - 3x = 4 - x - 3 - 2x

6 - 3x = -3x + 1

Add 3x to both sides.

6 = 1

Since the last equation, 6 = 1, is false after doing legal steps, that means that the equation is false and has no solution.

Answer: 0

Yes the Frist question is 15 students

the second question is 5 well I mean if you do it by Khan academy

the third one is well three dozen eggs are cracked, so probably 12?

Answer:

no, because the pythagorean theorem doesnt work out with those numbers.

Step-by-step explanation:

since (3^2)+(6^2) isnt 8^2

Answer:

121

Step-by-step explanation:

the lower quartile will always be the left side of the box aka the first quartile, the third quartile is upper quartile, which is always on the right. The line within the box is the median just so you know.

Step-by-step explanation:

38.25, 37.5, 36.75,35.75,34.75

Answer:

y+8=-2(x-4)

Step-by-step explanation:

point-slope form is y-y1=m(x-x1) where m is the slope, and (x1,y1) is a point.

We are given all of that information:

slope: -2

point: (4,-8)

substitute the numbers into the equation

y--8=-2(x-4)

we can make --8 to positive 8

so:

y+8=-2(x-4)

this is the equation in point-slope form

Hope this helps!

Answer:

36 milliliters of rain.

Step-by-step explanation:

The rate at which rain accumluated in a bucket is given by the function:

[tex]r(t)=10t-t^2[/tex]

Where r(t) is measured in milliliters per minute.

We want to find the total accumulation of rain from t = 0 to t = 3.

We can use the Net Change Theorem. So, we will integrate function r from t = 0 to t = 3:

[tex]\displaystyle \int_0^3r(t)\, dt[/tex]

Substitute:

[tex]=\displaystyle \int_0^3 10t-t^2\, dt[/tex]

Integrate:

[tex]\displaystyle =5t^2-\frac{1}{3}t^3\Big|_0^3[/tex]

Evaluate:

[tex]\displaystyle =(5(3)^2-\frac{1}{3}(3)^3)-(5(0)^2-\frac{1}{3}(0)^3)=36\text{ milliliters}[/tex]

36 milliliters of rain accumulated in the bucket from time t = 0 to t = 3.

Answer:

same, equal measure

Hope it helps

Please mark me as brainliest

Thank you

Answer:

9x^3 - 3x + 3

Step-by-step explanation:

(4x^3 + 3x + 1) - (-5x^3 + 6x - 2) =

= 4x^3 + 3x + 1 + 5x^3 - 6x + 2

= 9x^3 - 3x + 3

Answer:

9x^(3)-3x+3

Step-by-step explanation: