please help 5x^2+21x+4

Answer:

(5/6)

Step-by-step explanation:

Bc (2/3)=0.666666666667....

(2/15)*(4/5) doesn't make 0.666666666667

(4/5)*(5/6)= 0.666666666667

Answer:

114×10^5..............

Answer:

y > - (4/3) x - 3

Step-by-step explanation:

use (y2-y1)/(x2-x1) for slope, which is negative (use two points given, (-6, 5) and (3, -7))

y intercept is -3, but you can plug in values for x and y in any of two points given: (-6, 5) and (3, -7)

Then, dashed line indicates values along line are not included in inequality relationship

since shaded region is above line, the inequality uses ">"

Answer:

thanks for the points! have a wonderful day! ☺☺☺☺☺☺☺☺⭐⭐⭐⭐⭐⭐

Answer:

91.7 inches to 1 decimal place

Step-by-step explanation:

We will use Pythagoras's theorem to find the height of the pyramid.

The height of the Pyramid forms a right-angled triangle with half of the base and the slant height.

We can get half the length of the base by dividing the length of one side of the base = 20.4 by 2 = 10.2in

slant height = 92.3in

Therefore height = [tex]\sqrt{92.3^{2} -10.2^2} =91.73in[/tex]

The height of the pyramid is 91.73inches to 1 decimal place

The picture is not clear... the Question has got cut at the sides .... please take the picture properly and the post the Question again... please

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No they are not unequal... i. e. the two wires A and B are equal .

[tex]\frac{1}{3}[/tex] of A = [tex]\frac{1}{3}[/tex] of B

=> [tex]\frac{3}{3}[/tex] × A = B

=> 1 × A = B

=> A = B

:. The length of A = the length of B .

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HOPE IT HELPS

PLEASE MARK ME BRAINLIEST ☺️

$720.00

-

-

30×10=300

and

30×14=420

(you multiply the money with the amount of hours they spent working)

300

+ 420

----------

$720

hope this helps you out

Answer:

Your Answer is C

Step-by-step explanation:

when t is 1

3X2t=6

when t is 4

3X2t=24

Answer:

4in 5in and 8in (in that order)

Step-by-step explanation:

You measure Hight at the place where it makes a right angle (for these look at the dotted line and the number labeling it)

Answer:

1. 4 inches

2. 5 inches

3. 8 inches

Step-by-step explanation:

The heights are labelled.

The two triangles he drew and also the calculations he did are missing, so i have attached them.

Answer:

His calculations are not correct

Step-by-step explanation:

From the attached image showing the triangle, we can see that for the smaller triangle with w, 5.5 and 45° angle, it is clear that;

Opposite side is 5.5

Adjacent side is w

And angle is 45°.

Hypotenuse is unknown

Thus, from trigonometric ratios;

Opposite/adjacent = tan (angle)

Thus;

5.5/w = tan 45°

In Skylar's calculation, he expressed it as; 5.5/w = sin 45°

Therefore, his calculation is wrong.

Secondly, for the bigger triangle, it is clear that;

Opposite side is 5.5

Adjacent side is w + x

And angle is 35°.

Hypotenuse is unknown

Thus;

5.5/(w + x) = tan 35°

Whereas,skylar expressed his own as;

5.5/(w + x) = sin 35°

Again his calculation is wrong.

Answer:

68.55

Step-by-step explanation:

C= 2πr

C=2 x 3.14 x 7.5 = 47.1 (Divide by 2 for half circle)

47.1 ÷ 2 = 23.55 + 15 + 15 + 15 = 68.55

Answer:

A. 3c

Step-by-step explanation:

c + c + c = c × 3

c × 3 = 3c

Answer:

29

Step-by-step explanation:

Answer:

251.33in³

Step-by-step explanation:

Answer:

258.02 or 251.33in3

Step-by-step explanation:

I don't know which one for sure but go with the answer that most people got

Step-by-step explanation:

value of b is 73 (reason : sum of triangles)

a= 34 ( reason:180-73-73=34)

Answer: 73+73=146, 180-146= 34°

Step-by-step explanation:

b is parallel to 73, b= 73°

c = 34°

Answer:

$13.5

Step-by-step explanation:

Given data

We are given that the tax per CD is  $1.30

Hence for the 3 CDs the total tax = 3*1.3= $3.9

Also, the cost of the three CDs before tax = 44.4-3.9

=$40.5

Hence the cost of each CD before tax is

=40.5/3

=$13.5

Answer:

25

Step-by-step explanation:

math

Answer:

Im pretty sure its 45

Step-by-step explanation:

Step-by-step explanation:

5x + 7 = 132

5x = 125

x = 125/5

x = 25

hope it helps

Answer:

Step-by-step explanation:

Let all the measurements be in same unit.

200 cm = 2 m

2000 mm = 2 m

Let distance jumped by Jack = x m

Distance jumped by Jerzy = x + 2

Distance jumped by Abdullah = (x+ 2) + 2 = x + 4

Total = 12.69 m

x + x +2 +x +4 = 12.69

x +x + x + 2 + 4 = 12.69

         3x + 6      = 12.69

                  3x = 12.69 - 6

                 3x  = 6.69

                    x = 6.69/3

                    x = 2.23 m

distance jumped by Jack =2.23m

Distance jumped by Jerzy = 2.23 + 2 = 4.23 m

Distance jumped by Abdullah = 2.23 + 4 = 6.23 m

i think its right good luck im not so good at this

Answer:

ur good

Step-by-step explanation:

Answer: kid i d k  to be sorry

Step-by-step explanation:

Answer:

angle 5 is 149

angle 8 is 31

Step-by-step explanation:

since angle three and five are diagonal from each other on opposite sides they will have the same measurements.  since angle eight is on the same side as angle five the total of the two angles has to equal 180

hope this helps

Answer:

12x-23

Step-by-step explanation:

Answer:

peen

Step-by-step explanation:

Using the formulas

AB=s(s﹣a)(s﹣b)(s﹣c)

V=ABh

s=a+b+c

2

Solving for V

V=1

4h﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·12·﹣184+2·(18·18)2+2·(18·2)2﹣184+2·(18·2)2﹣24≈215.66641

or 216.

Answer: x=1

Step-by-step explanation:

Answer:

77r - 2077

Step-by-step explanation:

To find the the sum of (23m−34)( 3 2 ​ m− 4 3 ​ ) and (−16m−r)(− 6 1 ​ m−r)

First open the bracket

23m × 32m - 23m × 43 - 34 × 32m + 34 × 43

736m^2 - 989m - 1088m + 1462

736m^2 - 2077m + 1462

Open the second bracket

16m × 61m + 16m × r + r × 61m + r × r

976m^2 + 16mr + 61mr + r^2

976m^2 + 77mr + r^2

Adding both equations together

736m^2 - 2077m + 1462 + 976m^2 + 77mr + r^2

1712m^2 + 77mr - 2077m + 1462 + r^2

1712m^2 + m( 77r - 2077 ) + 1462 + r^2

Therefore The coefficient of m is 77r - 2077