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Answer: 30° - 3d ≤ 20°

Step-by-step explanation:

Here the constant rate of decreasing the temperature = d degree,

Thus, the total decreasing in three days = 3d degree,

If the temperature on Monday = 30°

Then the temperature n Thursday =  30° - 3d

Since, The swimming pool is open when the high temperature is higher than 20°

⇒ 30° - 3d ≤ 20°

Which is the required inequality to determine the rate of temperature decrease in degrees Celsius per day, d, from Monday to Thursday.

Answer:

30-3d\le 20

Step-by-step explanation:

Answer:

Width = 93

Step-by-step explanation:

12 × 16 is 192

285 - 192 = 93

Answer:

The width is 93.

Step-by-step explanation:

I took the test.

Step-by-step explanation:

l = 12 metres

b = 15 metres

diameter of semicircle = length = 12 m

radius = 12/2 = 6 cm

area of the figure = area of rectangle + area of semi circle

= l × b + πr²

= 12 × 15 + 3.14 × 6²

= 180 + 113.04

= 293.04 m²

The perimeter of the figure is 60.84 meters.

A rectangle is a quadrilateral with all four interior angles 90°.

Given that, the width and height of the rectangle are 15 meters and 12 meters respectively.

Note that the diamter o he semicircel is 12 meters.

The radius of the semicircle is:

12/2

= 6 meters

The perimeter of the figure is given by:
15 + 12 + 15 + π(6)

= 42 + 3.14×6

= 60.84

Hence, the perimeter of the figure is 60.84 meters.

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Answer:

B and C

Step-by-step explanation:

Kitten:

2 times in the morning and 2 times in the evening = 4 times per day

That means Ariane feeds her kitten 4k grams of food per day.

Dog:

1 time in the morning and 1 time in the evening = 2 times per day

That means Ariane feeds her dog 2d grams of food per day.

Answer:

If you find the total, you have to add the kitten's food per day and the dog's food per day. That is 4k + 2d, which is the same as choice B.

We can break 4k into 2k + 2k. We can also break 2d into d + d. We can write that as 2k + 2k + d + d. That equals the same as choice C, making it a correct choice.

I hope this helps and please mark me as brainliest!

Answer:

usually the independent value is the x value and the y is the dependent value.

Step-by-step explanation:

an example is "The fee for a hotel room differs from how many days you stay"

independent: the number of days you stay at hotel

dependent: fee for hotel room

Answer: So when you double the radius, the area goes up by 4 times because 2 squared is 4. The area will always go up by the square of how much the radius goes up. By contrast, the circumference will only double -- from 12.56 to 25.12 because you do not square the radius (or diameter) -- you just multiply it by pi.

Answer:

8. Scalene 9. Isosceles

Step-by-step explanation:

8) Acute Scalene

9) Right Isosceles

Triangles can be classified in 3 ways based on their angles: acute, obtuse, and right. There are 3 ways to classify based on sides: scalene, isosceles, and equilateral.

Definitions

Acute - a triangle with 3 acute angles (angles under 90 degrees)

Obtuse - a triangle with 1 obtuse angle (angle greater than 90 degrees)

Right - a triangle with 1 right angle (90-degree angle)

Scalene - a triangle with sides of all different lengths

Isosceles - a triangle with 2 equal sides and angles

Equilateral - a triangle with 3 equal sides

Question 8

From the 2 angles we are given, we can tell that all of the angles are different. This must mean that the sides are also different. Since the sides are different, this must be a scalene triangle. Additionally, the missing angle is 100 degrees; thus, it must be an obtuse triangle.

Question 9

The marks on the 2 sides mean that these lines are equal. Therefore, it must be an isosceles triangle. One of the angles is marked with a box. This means that the angle is 90 degrees.  So, it is a right triangle.

Answer:

379.88 cm²

Step-by-step explanation:

A=6ah+3√3a²=6·4.3·11+3·√3·4.3²≈379.87686

Answer: 373cm squared

Step-by-step explanation:

ok so you have to find the are of each individdual part of this shape. there are 6 long sides so 55x6=330. and then you hav to find the are of the top and bottom surface which is 43. 330+43=373

Answer:

15.

Step-by-step explanation:

the 2 above the 7 tells us how many times we multiply through number by it self so 7x2 is 14- 4 is 10+5 is 15

Answer: The Casio FX-9750GII Graphic Calculator features all the basic functionality of an entry-level graphing calculator, making it great for math coursework from Pre-Algebra to AP Calculus and Statistics and courses in between (like Geometry and Trigonometry).

Step-by-step explanation: pls friend can i get branliest and thanks

Answer:

Number line graph with closed circle on 30 and shading to the right

because you already have 30 dollars and they need at least 120 but if they get more then 120 they can still hold the science fair.

THIS ANSWER ISN'T MINE. I TOOK IT FROM AN ANSWER TO THE SAME QUESTION ANOTHER USER POSTED.

Answer

2/18 = 9

Step-by-step explanation:

Answer:

It’s 9 and it’s okay you are just starting don’t worry !

Step-by-step explanation:

Hope this helps!!

HAVE AN AMAZING DAY

Answer:

height of the tree : 17.63 m

create a proportional equation:

[tex]\hookrightarrow \sf \dfrac{1.85}{39.55-35.4} =\dfrac{h}{39.55}[/tex]

[tex]\hookrightarrow \sf \dfrac{1.85}{4.15} =\dfrac{h}{39.55}[/tex]

[tex]\hookrightarrow \sf (39.55)1.85} =(4.15)h}[/tex]

[tex]\hookrightarrow \sf 4.15h= 73.1675[/tex]

[tex]\hookrightarrow \sf h= \dfrac{73.1675}{4.15}[/tex]

[tex]\hookrightarrow \sf h=17.63072...[/tex]

[tex]\rightarrow \sf h=17.63[/tex]

Answer:height of the tree : 17.63 m

Step-by-step explanation:

i cant process what your saying

Answer:

See below

Step-by-step explanation:

100 boxes     28 red    40 green   32 blue

4/10 * 100   = 40       Green

.32 * 100 = 32           Blue

Answer:

121/220 = 55%

88/220 = 40%

66/220 = 30%

The answer would be b

:)

Have an amazing day!!

Please rate and mark brainliest!!!

Answer:

C. 20x+100<400, the new theater must have fewer than 15 seats

Step-by-step explanation:

Has to be less than 400 seats and we must include the 100 balcony seats

Answer:

Option B and Option D

Step-by-step explanation:

B = 3*x = 3x, 3*15 = 45.

D=3* x + 15.

3x = 135 and x + 15 = 60 are the equations that are equivalent to 3x+45=180

Two or more expressions with an Equal sign is called as Equation.

We have to solve the equation  3x+45=180

Now isolate x on one side of the equation.

We can do this by subtracting 45 from both sides, giving us 3x=135, and then dividing both sides by 3 to get x=45.

Therefore, the equivalent equations are:

3x = 135

x + 15 = 60

Hence, 3x = 135 and x + 15 = 60 are the equations that are equivalent to 3x+45=180

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School bag _ y

book _ x

system:

y+3x=180

y+5x=270

y=180-3x (and we put that instead of 'y' in the second equation)

(180-3x)+5x=270

180+2x=270

2x=90

x=45

so one book costs $45

and school bag:

y+3×45=180

y+135=180

y=180-135

y=45

Answer:

Each book costed 45$.

Step-by-step explanation:

Let x represent the price of a school bag and y represent the price of a book.

we get the following system of equations:

x+3y=180  (equation 1)

x+5y=270 (equation 2)

using equation 1: x=180-3y

then we substitute x in equation 2 in order to find y:

180-3y+5y=270

180+2y=270

2y=270-180=90

y=90/2=45

and we know that y represents the price of a book, so each book costs 45$.

Answer:

x=10

Step-by-step explanation:

so your given an angle, 110, and another with an equation, 8x+30, which happens to be vertical to 110 degree angle meaning they are equal, so they both are equal to 110 now how do you solve for x? you simply reverse the equation that x is in, so you subtract 110-30=80, then divide by 8 giving you 10, so x=10.

Answer:

X = 10, because of the second angle's equation. 8x + 30 hints the solution. 110 - 30 is 80, and 80 / 8x In this case, x can be represented as itself is 10

Answer:

22 11/16 or 22.68

Step-by-step explanation:

Turn the mixed numbers to fractions

[tex]\frac{11}{2} *\frac{33}{8}[/tex]

Then multiply both Numerators

11 x 33=363

Also do the same to the Denominators

2 x 8=16

You get  [tex]\frac{363}{16}[/tex]

Simplify and it becomes 22 11/16 or 22.68

Answer:

12 robots

Step-by-step explanation:

Count up all the dots on the line

Answer:

32 robots you can’t have half of a robot so the other 2/4 doesn’t count

Step-by-step explanation:

Answer:

[tex]V=160\pi[/tex]

Step-by-step explanation:

[tex]V=h\pi r^{2}[/tex]

[tex]V=10*\pi 4^{2}[/tex]

[tex]V=160\pi[/tex]

Answer:

b!

Step-by-step explanation:

Answer:

They both are a 90 degree angle.

For the parallelogram KLMN, opposite angles K and M are equal.

Parallelogram are type of quadrilateral in two dimensional geometry which has four sides, four vertices and four angles where opposite sides are equal. They also have the two pairs of sides parallel to each other. These sides are opposite sides.

The sum of the adjacent angles of the parallelogram is equal to 180 degrees and the sum of all angles is equal to 360 degrees. Also the opposite angles are equal.

Given that KLMN is a parallelogram.

Here K and M are opposite vertices and also L and N are opposite vertices.

In a parallelogram, we know that measure of opposite angles will be equal. So here, measure of angles K and M are equal.

Therefore, since angles K and M are opposite angles of the parallelogram, they are equal.

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Answer:

228.75 inches cubed

Step-by-step explanation:

This is because the formula to find the volume of a rectangular prism is base x height x width. so if you plug in the numbers, 7 5/8 x 12 x 2 1/2, and we get our answer of 228.75 inches cubed or 228.75 in.^3

The 4th one is the answer i did this earlier

Answer:

c = 0.06p + p

Step-by-step explanation:

hope this helped

An equation that represents the total cost, c, of any item bought in Idaho whose price is p is c = 1.06p.

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

Cost of the winter jacket = $30

Sales tax = 6%

Total cost of the winter jacket = 30 + (6% × 30)

                                                   = 30 + 1.8

                                                   = $31.8

If the total cost of any item is c whose price is p,

c = p + (6% × p)

c = p + 0.06p

c = 1.06p

Hence the required equation is c = 1.06p.

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Answer:

2

Step-by-step explanation:

If you look at how many lines are lines up at the ten that is the answer

Answer:

2

Step-by-step explanation: