Please someone help me if your good at math I’m struggling here:/I’ll mark brainliest


A.$4/1 lb

B.$8/2 lb

C.1 lb/$4

D.$1/4 lb

Answer:

1) a≥−2.5

2) n<1.2

3) b≥−0.8

4) false,

5) r≤0.1

6) y≤0.8

Step-by-step explanation:

1) Divide both sides by -3.2.

−3.2a/-3.2 ≤ 8/-3.2

2) Flip the equation

- n+0.8<2

Subtract 0.8 from the sides

n+0.8−0.8<2−0.8

3) Add 4.2 to both sides.

b−4.2+4.2≥−5+4.2

4) inequality cannot be solved

5) Simplify both sides of the inequality.

−r+5.1≥5

Subtract 5.1 from both sides.

−r+5.1−5.1≥5−5.1

−r≥−0.1

Divide both sides by -1.

-r/-1 ≥ -0.1/-1

6) Flip the equation.

−1.8y≥−1.44

Divide both sides by -1.8.

−1.8y/−1.8 ≥ −1.44/−1.8

good luck with your work!!

Answer:

Scale factor = 4

Step-by-step explanation:

Scale factor = [tex]\frac{\text{Dimension of the image}}{\text{Dimension of preimage or original}}[/tex]

Since, S is being dilated with a scale factor to form T,

So, the figure S is the preimage and figure T will be the image,

Length of one side of image T = 8

Length of one side of preimage = 2

Therefore, Scale factor = [tex]\frac{8}{2}[/tex]

                                       = 4

Scale factor by which figure S has been dilated to form figure T is 4.    

Answer:

Step-by-step explanation:

It would be helpful if you could share the diagram of the equilateral triangle.

All 3 sides are equal, as are all 3 angles.

The altitude is perpendicular to the base.  The altitude, h, is equal to

h = s*( (√3) / 2, where s is the length of one side of the triangle.

Answer:

angle A = 47°

angle B= 48°

Step-by-step explanation:

4x+ 4x+ 4+3+85=180°

8x+92=180°

8x= 180-92

8x= 88°

x= 11°

angle A = 4(11)+3= 47°

angle B = 4(11)+4= 48°

Answer:

each side 5

Step-by-step explanation:

with 2 equal internal base angles, we know this is an isosceles triangle

this being isosceles also tells us that the 2 opposite sides are also equal

Therefore: x + 2 = 3x - 4

solving for x

x - 3x = -4 -2

-2x = -6

x = -6 ÷ -2

× = 3

substituting x:

x +2 = 3 + 2 = 5

3x-4 = 9 - 4 = 5

Answer:

It will cost them $8.32 to run their dishwasher for 52 weeks.

Step-by-step explanation:

With the information provided, you can say that the cost to run the dishwasher is equal to the cost per week for the number of weeks, which would be:

Total cost=$0.16*number of weeks

Since you want to determine the cost to run the dishwasher for 52 weeks, you can replace the number of weeks in the formula to get the answer:

Total cost=$0.16*52

Total cost=$8.32

According to this, the answer is that it will cost them $8.32 to run their dishwasher for 52 weeks.

Answer:

6/15

Step-by-step explanation:

3/5*2/3=6/15

Answer:

9d+3

Step-by-step explanation:

(6d+5)-(2-3d)= cancel out parentheses

6d+5-2+3d= Commutative property of addition

6d+3d+5-2= Group like terms

(6d+3d)+(5-2)= Combine like terms

Answer = 9d+3

Answer:

$0.60

Step-by-step explanation:

9 divided by 15 = 0.6 so that would be $0.60, if you want to check if it's accurate then do 0.60x15 and you get 9

Answer: It is B, C, E

B- a tra asian between the two figures maps <c to <f

C- Air rotation mapping CB to FD and <B to <D

E- A reflection across CB mapping AC to EF, and <A to <E

Step-by-step explanation:

The rigid motion that verifies the triangles are congruent by SAS is reflection.

In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle. The two rays are called the sides of an angle, and the common endpoint is called the vertex.

here, we have,

we know that,

The angle of reflection simply means the angle that's formed between the normal ray and the reflected ray. It's the line that's perpendicular to the resulting surface at the point of incidence.

According to the law of reflection, the angle of reflection must be equal to the angle of incidence. Therefore, the rigid motion that verifies the triangles are congruent by SAS is reflection.

Hence, The rigid motion that verifies the triangles are congruent by SAS is reflection.

Read related link on angle:

brainly.com/question/17296106

#SPJ5

Answer:

a(7) = 21

Step-by-step explanation:

Using the recursive formula and a(1) = 0, a(2) = 1 , then

a(3) = a(2) + 2a(1) = 1 + 2(0) = 1 + 0 = 1

a(4) = a(3) + 2a(2) = 1 + 2(1) = 1 + 2 = 3

a(5) = a(4) + 2a(3) = 3 + 2(1) = 3 + 2 = 5

a(6) = a(5) + 2a(4) = 5 + 2(3) = 5 + 6 = 11

a(7) = a(6) + 2a(5) = 11 + 2(5) = 11 + 10 = 21

Answer:

The answer (in scientific notation) should be 1.8 x 10^2.

Step-by-step explanation:

(2 x 10^6) x (0.00009) = ?

(2 x 1,000,000) x (0.00009) = ?

2,000,000 x (0.00009) = 180

180 as a scientific notation is 1.8 x 10^2.

Answer:

-4x

Step-by-step explanation:

Answer:

-4x

Step-by-step explanation:

Answer:

The function value would be 6

Step-by-step explanation:

If f(2) then....

f(x) = x + 4

f(2) = 2 + 4

f(2) = 6

Answer:

3over 5

Step-by-step explanation:

lol its that simple

Answer:

zvck zvmv

Step-by-step explanation:

Step-by-step explanation:

[tex] \underline{ \underline{ \text{Given}}} : [/tex]

[tex] \underline{ \underline{ \text{To \: find}}} : [/tex]

[tex] \underline {\underline{ \text{ Solution}}} : [/tex]

From equation ( i ) :

-4x - y = 19

-y = 19 + 4x

-y = - ( -19 - 4x )

y = -4x - 19 ------ Equation ( iii )

Substituting the value of y from equation ( iii ) in equation ( ii ) , we get :

[tex] \tt{x - 2y = - 7 }[/tex]

⇾ [tex] \tt{x - 2( - 4x - 19) = - 7}[/tex]

⇾ [tex] \tt{x + 8x + 38 = - 7}[/tex]

⇾ [tex] \tt{9x = - 7 - 38}[/tex]

⇾ [tex] \tt{9x = - 45}[/tex]

⇾ [tex] \tt{x = \frac{ - 45}{9}} [/tex]

⇾ [tex] \boxed{ \tt{x = - 5}}[/tex]

Substituting the value of x in equation ( i ) , we get :

⇾ [tex] \tt{ - 5 - 2y = - 7}[/tex]

⇾ [tex] \tt{ - 2y = - 7 + 5}[/tex]

⇾ [tex] \tt{ - 2y = - 2}[/tex]

⇾ [tex] \tt{y = \frac{ - 2}{ - 2}} [/tex]

⇾ [tex] \boxed{ \tt{y = 1}}[/tex]

The possible solution of the system is ordered pair ( x , y ) = ( -5 , 1 ) .

[tex] \red{ \boxed{ \boxed { \tt{Our \: final \: answer : \boxed{ \tt{( - 5 \:, 1 \: )}}}}}}[/tex]

Hope I helped ! ツ

Have a wonderful day / night ! ♡

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          Value of constant 'k' = -0.041097

          Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]

         [tex]\text{ln}\frac{N}{N_0}=-kt[/tex]

         Here, N = Amount remaining after 't' years

                   N₀ = Initial amount of the radioactive element

                    k = Constant

                    t = Period of decay

Given in the question,

Substitute these values in the expression for the value of 'k',

[tex]\text{ln}\frac{75}{100}=-7k[/tex]

[tex]k=\frac{1}{7}[(\text{ln}(75)-\text{ln}(100)][/tex]

[tex]k=\frac{1}{7}[4.317488-4.605170][/tex]

k = -0.041097

Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]

  Therefore, value of constant 'k' = -0.041097

               Equation modeling the exponential decay → [tex]\text{ln}\frac{N}{N_0}=-0.41097t[/tex]

Learn more about the radioactive decay here,

https://brainly.com/question/9660135?referrer=searchResults

Answer:

$ 1.90 for 1 Gallon

Step-by-step explanation:

11.40/6 = 1.90

another way you can show the answer is: $1.90/1 Gal.

Answer:

6.28 x 3.14 = 19.7192

Step-by-step explanation:

Answer:

[tex]-10x^{2}-9x-6[/tex]

Step-by-step explanation:

Combining like terms:

[tex]-7x^{2}-3x^{2}-10x+x-6[/tex]

[tex]-10x^{2}-9x-6[/tex]

Answer:

The width is 102

Step-by-step explanation:

Hope this helps! :)

Answer:

17. We study French

a. at school

b. to the building

c. at the theatre

18. Philippe watches TV in

a. the bathroom

b. the street

c. the living room

19. the car and the bikes are in

a. the garage

b. the living room

c. the kitchen

20. There is a good cinema and a Mexican restaurant in my

a. garage

b. district

c. Museum

can you please give me brainliest this was very hard

thanks

-kitten

Answer:

x = 3

Step-by-step explanation:

I hope this helps!

Answer:

x = 3

Step-by-step explanation:

I hope this helps

Answer:

2nd one because that's the proportion a

Answer: For number 1 its 125

Number 2 is 4 items , Number 3 is 13 pens

Step-by-step explanation:

Answer:

Use the linear pair axiom

answer will be 35 degrees

Answer:

y ≥ 2x + 4

Step-by-step explanation: