expand the following:
5(2x-4)

Answer:

x = 13

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

5^2 + 12^2 = x^2

25+144 = x^2

169 = x^2

Taking the square root of each side

sqrt(169) = sqrt(x^2)

13 =x

Answer:

13

Step-by-step explanation:

[tex] \sqrt{5^{2} + 12^{2}} = \sqrt{169} \\ \\ \sqrt{169} = 13[/tex]

a²+b²=c²

Answer:

12.8 square meters

Step-by-step explanation:

244.48/19.1=12.8

Answer:

the third option, "what number, when added to negative four, is equal to negative five?"

Step-by-step explanation:

"what number, when added to negative four, is equal to negative five?" can be expressed as g + (- 4) = - 5, which is the same as in the equation.

i hope this helps! :D comment if you need any clarification.

Answer: Choice C) 17 degrees

=============================================================

Work Shown:

Apply the law of cosines

c^2 = a^2 + b^2 - 2*a*b*cos(C)

12^2 = 28^2 + 18^2 - 2*28*18*cos(C)

144 = 1108 - 1008cos(C)

144+1008cos(C) = 1108

1008cos(C) = 1108-144

1008cos(C) = 964

cos(C) = 964/1008

C = arccos(964/1008)

C = 16.991286936969 which is approximate

C = 17 degrees

Note: arccos is the same as inverse cosine.

Answer:

23x+1........ .... .........

Answer:

6x-48=4x-10

2x=38

x=19

Answer:

x = 33

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the 2 angles from 180 for x

x = 180 - (90 + 57) = 180 - 147 = 33

Answer:

25.7 in

Step-by-step explanation:

perimeter = 1/2(2)πr + 10 = 15.7 + 10 = 25.7 in

Answer: the other silds are the same

Step-by-step explanation:

finding tenth is not necessary so

Step-by-step explanation:

solution,

given length = 3 m

breath = 10 m

and

height=6 m

Volume=l×b×h

3×10×6

180

so the volume is 180m

hope it helps you have a good day

please mark me as brain list

Answer:  (x, y) = (-26, 10)

This means x = -26 and y = 10 pair up together

===============================================================

How to get that answer:

Add the equations straight down. Think of having 3 separate columns for the three different like terms.

After all that, we're left with the simpler equation 3y = 30. That solves to y = 10 after dividing both sides by 3.

Plug this back into any equation involving x and y. Solve for x

3x+9y = 12

3x+9(10) = 12

3x+90 = 12

3x = 12-90

3x = -78

x = -78/3

x = -26

We have found that x = -26 and y = 10 pair up together to form the solution.

-------------------

Checking the answer:

Plug (x,y) = (-26, 10) into the first equation

3x+9y = 12

3(-26)+9(10) = 12

-78+90 = 12

12 = 12

We get a true equation since the same thing is on both sides.

Repeat the same idea for the second equation

-3x-6y = 18

-3(-26) - 6(10) = 18

78 - 60 = 18

18 = 18

The second equation is true as well.

Both equations are true, so the solution (x, y) = (-26, 10) is confirmed.

Answer:

-26, 10

Step-by-step explanation:

See the steps below:)

Answer:

5.600

Step-by-step explanation:

Step-by-step explanation:

hope this helped you :)) !!

Answer:

Kindly check explanation

Step-by-step explanation:

Using the integer tiles :

Drawing 2 tiles each time an eagle is obtained, this gives:

-2 + - 2 + - 2 + - 2 + - 2 = - 10

Using the number line,

Each unit on the number line = - 2

Any time an eagle scored ; take a unit step to the left.

This give ls a unit step 5 times

-2 + - 2 + - 2 + - 2 + - 2 = - 10

Using direct multiplication :

-2 * 5 = - 10 as it means - 2 in 5 places ; similarly, scoring - 2 five times will give - 10

Also note :

Either - 2 * 5 or - 5 * 2 is the same due to commutativity property of multiplication

Answer:

104,758

Step-by-step explanation:

Answer:

A. 1

B. 7

C. 2

D. 10

,,,,,,,,,,

Answer:

18 centimeters.

Step-by-step explanation:

Since you already know the length (height) divide 20 by 5 = 4.

This gives you the width (4), add up all the sides ( 4 + 4 + 5 + 5).

The sum comes out to be 18.

Answer:

h

Step-by-step explanation:

multiplication and inference

Answer:

below, and I hope that this helps you solve it.

Step-by-step explanation:

So what you would want to do is do this.

10×10= 100 + 5×10= 50 + 3×10=30 + 5×3=15

So now you want to add, so add

100 + 50 + 30 + 15 and that would equal to 195 and now you want to divide 195 ÷ 2 and that would equal to 97.5

Answer:

10

Step-by-step explanation:

Rolling a single six-sided die, you would get two 1/6th of the time because there is one two out of the six sides.

So 60 rolls would be 60*(1/6)=60/6=10

Answer: 193.3125

Step-by-step explanation:

It deleted my entire explanation um-

Anyways, calculate the area of the rectangle, length x width (7 * 15) and the semicircle (i did pi times radius squared and halved it to get the semicircle)

Basically, 105 plus the semicircle is 193.

Answer:

$\$ 10, 000 is the answer I think so

Answer:

...

Step-by-step explanation:

523.598 round it if u want

Answer:

1536 rats will be total after 10 months

Step-by-step explanation:

The number is multiplied by 2 each time, so we have to continue multiplying by 2

Month 5: 48 x 2 = 96

Month 6: 96 x 2 = 192

Month 7: 192 x 2 = 384

Month 8: 384 x 2 = 768

Month 9: 768 x 2 = 1536

Month 10: 1536

Answer:

Step-by-step explanation:

90 + 34 = (l)

(l) = 124

Answer:

6

hope it is helpful to you

Answer: if simplifying [tex]7x38+17x22+8x[/tex]

Step-by-step explanation: