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Answer:

A. 1

B. 7

C. 2

D. 10

,,,,,,,,,,

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: Choice C) 17 degrees

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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:

$52

Step-by-step explanation:

Given data

Beth can buy T-shirts in packs of 5 for $5.55

Cost per shirt

=5.55/5

=$1.11

To buy 40 shirt

=1.11*40

=$44.4

In packs of 2 for $4.82

cost per shirt

=4.82/2

=$2.41

To buy 40 shirt

=2.41*40

=$96.4

Hence the best buy in packs of 5 for $5.55

and the cost per shirt is $1.11

He will save

=96.4-44.4

=$52

Answer:

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

Step-by-step explanation:

hope this helped you :)) !!

Answer:

6

hope it is helpful to you

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:

k = 59.8

Step-by-step explanation:

Given

k - 7.8 = 52 ( isolate k by adding 7.8 to both sides )

k = 59.8

The value of the expression is 86.

To evaluate the given expression, we need to simply put the given value of x in the mentioned expression. Subsequently, further operations will be performed based on the sequence in order of operators.

Value = 150 - (2 + x)³

Keep the value of x in the mentioned expression

Value = 150 - (2 + 2)³

Performing addition inside the bracket to find the value

Value = 150 - 4³

Taking cube on Right Hand Side of the equation

Value = 150 - 64

Performing subtraction to find the value of equation

Value = 86

Hence, the evaluation will give the result 86.

Learn more about evaluation of expression -

https://brainly.com/question/4344214

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Answer:

104,758

Step-by-step explanation:

Answer:

6x-48=4x-10

2x=38

x=19

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:

...

Step-by-step explanation:

523.598 round it if u want

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

Step-by-step explanation:

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:

hope it helps.

Answer:

Step-by-step explanation:

90 + 34 = (l)

(l) = 124

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:

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:

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

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:

5.600

Step-by-step explanation:

Answer:

12.8 square meters

Step-by-step explanation:

244.48/19.1=12.8

Answer:

h

Step-by-step explanation:

multiplication and inference

Answer:  (x, y) = (-26, 10)

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

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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.

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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:

dα/dt  =  - 0,25  rad/sec

Step-by-step explanation:

The vertical wall, the ground from the vertical wall up to the ladder, and the ladder shape a right triangle. angle α  will be the angle between the ladder and the ground, then:

cos α  = distance between the wall and the down end of the ladder (x)  /  length of the ladder

cos α   =  x/ L

- sin α * dα/dt   =  dx/dt * L /L²

- sin α * dα/dt   =  dx/dt /L

When   the down end of the ladder is 8 ft apart from the wall

cos  α   =  8 / 10   =  0,8  then    cos² α  +  sin²α  = 1

sin² α  =  1 - cos²α        sin²α =  1 - (0.8)²    sin²α  = 0.36

sin α  = 0.6

dα/dt  =  ?

dx/ dt  =  3/2

L  = 10 ft

x  =  8 ft

By substitution

- 0.6*dα / dt   = (3/2) / 10

dα/dt  =  -  1.5 / 6

dα/dt  =  - 0,25  rad/sec

(-) means the angle is decreasing

Answer:

25.7 in

Step-by-step explanation:

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