Someone help me please

Answer:

A =70 ft^2

Step-by-step explanation:

The area of the triangle is equal to

A = 1/2 bh where b is the base and h is the height

A = 1/2 (20) *7

A =70 ft^2

Answer:

4.2 inches when rounded

Step-by-step explanation:

volume = pi(r²)h

155.09088in³ = pi(r²)2.8

÷2.8 ÷2.8

55.3896 =pi(r²)

÷pi ÷pi

17.6310572718 = (r²)

Then you have to square root both sides (I tried to use the radical symbol but it didnt work, sorry :( )

After you square root it you should get

4.1989352545 = r

Answer:

4.2 inches(rounded)

Step-by-step explanation:

Hope im right :)

Answer:

sin theta = opp/ hypotenuse

Step-by-step explanation:

sin theta = opp/ hypotenuse

cos theta = adj/ hypotenuse

tan theta = opp/ adj

In this case we know the opposite  and the hypotenuse

Answer:

Bronze

Step-by-step explanation:

To know the metal used to produce necklace, we must calculate the density of the necklace. This is illustrated below below:

Mass of necklace = 192g

Volume = 19.5cm^3

Density =...?

Density of a substance is simply defined as the mass of the substance per unit volume.

Density = Mass /volume

Density = 192g / 19.5cm^3

Density = 9.85g/cm^3

Now comparing the density of the necklace with the density of various metals in the table, we can see that the density of the necklace matches that of bronze.

Therefore, the necklace is made of bronze.

Answer:

In this subtraction, PR5T and 47Y6 represent 4-digit numbers. What number does PR5T represent?

PR5T - 47Y6 = 1998

Answer:

Step-by-step explanation:

Answer:

the 3rd on

Step-by-step explanation:

Answer:

m∠BNP=90∘ and m∠ANP=90∘

Step-by-step explanation:

Looking at the diagram these are perpindicular which means they have 90 degree angles.

Answer:

6x -2y = 8

-6x+5y = 7

3y = 15

y = 5

6x - 2(5) = 8

6x - 10 = 8

6x = 18

x = 3

(3, 5)

Step-by-step explanation:

Answer: i am so confused lol

Step-by-step explanation:

Answer:

Something

Step-by-step explanation:

First you type shift then s, o, m, e, t, h, i, n, and g

Answer:

option 4

Step-by-step explanation:

LA = πrl

Here, l ----> slant height

l= 21 ft

r = 12 ft

LA = 3.14*12*21  =  791.7 square ft

SA = πr(l + r)

= 3.14*12 *(12+21)

=3.14* 12 * 33

= 1244.1 square ft

Every time, this second restaurant is less expensive; therefore, Lisa should decide to get pizzas for her group from the second restaurant.

All items and services purchased for resale of consumption throughout the production process are included in spending on goods and services, excluding capital goods whose consumption is recorded as consumption for fixed capital.

We have For the first restaurant

the total cost per pizza is $16 + $5 = $21.

For the second restaurant

the total cost per pizza is $17.

If Lisa purchases x pizzas,

the total cost from the first restaurant will be $21x + $5 = $21x + $5.

The total cost from the second restaurant will be $17x.

If x = 1, the first restaurant will cost $26 and the second restaurant will cost $17, so the second restaurant is cheaper.

If x = 2,

the first restaurant will cost $47 and the second restaurant will cost $34, so the second restaurant is cheaper.

If x = 3, the first restaurant will cost $68 and the second restaurant will cost $51, so the second restaurant is cheaper.

So, in every case, the second restaurant is cheaper, and Lisa should choose the second restaurant to purchase pizzas for her party.

To know more about Purchase visit :

https://brainly.com/question/29150263

#SPJ1

Answer:

4.93

Step-by-step explanation:

5.55-0.62=

4.93

Answer:

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

Your answer is going to Be b

Answer:

The answer is A

Step-by-step explanation:

This figure is a cylinder and the surface area formula of a cylinder is 2 pi rh + 2pi r^2

Answer :

A. 368 ft²

Step by step

[tex]d - b = 19 - 15 = 4 \\ (b \times c) + (a \times 4) \\ = (15 \times 16) + (32 \times 4) \\ = 240 + 128 \\ = 368[/tex]

Answer:

386 ft :)

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

1 hour

Step-by-step explanation:

Answer:

75 cm

Step-by-step explanation:

It is given that the triangles are similar. It means that the ratio of their areas are equal to the ratio of their bases and ratio of their altitudes.

Let [tex]A_1[/tex] be the area of 1st triangle.

Let [tex]A_2[/tex] be the area of 2nd triangle.

Let [tex]h_1[/tex] be the altitude of 1st triangle.

Let [tex]h_2[/tex] be the altitude of 2nd triangle.

Let [tex]b_1[/tex] be the base of 1st triangle.

Let [tex]b_2[/tex] be the base of 2nd triangle.

Then [tex]A_1: A_2 = h_1 : h_2 = b_1 : b_2 ...... (1)[/tex]

[tex]A_1 = 42 cm^{2} \\A_2 = 262.5 cm^{2}\\h_1 = 7 cm\\b_2 = ?[/tex]

We know that area of a triangle is:

[tex]A = \dfrac{1}{2} \times b \times h[/tex]

Area of smaller triangle:

[tex]\frac{1}{2} \times b_1 \times 7 = 42\\\Rightarrow b_1 = 12 cm[/tex]

Now, using part of equation (1):

[tex]A_1: A_2 = b_1 : b_2 \\\Rightarrow \dfrac{42}{262.5} = \dfrac{12}{b_2}\\\Rightarrow b_2 = 75 cm[/tex]

Hence, base of larger triangle = 75 cm

Answer:

A

Step-by-step explanation:

You are just going to have to divide the 7 which gives you 3.5

Answer:

Step-by-step explanation:

Find the number in the tenth place 1

and look one place to the right for the rounding digit 4

Round up if this number is greater than or equal to 5

and round down if it is less than 5

The answer is 14.1

Answer:

B, C.

Step-by-step explanation:

B, because you're multiplying them all, which is what you would do in the normal formula. You would get 255/16, or 15.9375.

C, since you would also get 255/16.

Please tell me if im wrong! im only a student .m.

Answer:

(a;b)={(17; 64); (64; 17)}

Step-by-step explanation:

a+b=81 => b=81-a

a*b=1088

a*(81-a)=1088

-a²+81a=1088

a²-81a+1088=0

a²-64a-17a+1088=0

a(a-64)-17(a-64)=0

(a-17)(a-64)=0

=> a=17 and a=64

for a=17 => b=81-17=64

for a=64 => b=81-64=17

(a;b)={(17; 64); (64; 17)}

The two integers are equal to a = 17 and b = 64.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

The two integers are,

a+b=81 => b=81-a

a x b=1088

Calculate the value of one integer,

a x (81-a)=1088

-a²+81a=1088

a²-81a+1088=0

a²-64a-17a+1088=0

a(a-64)-17(a-64)=0

(a-17)(a-64)=0

Calculate the value of the second integer b,

=> a=17 and a=64

for a=17 => b=81-17=64

Therefore, the two integers are equal to a = 17 and b = 64.

To know more about an expression follow

https://brainly.com/question/24734894

#SPJ2

Answer:

40%.

Step-by-step explanation:

Prob( Rolling a 4) = 12/50

Prob( Rolling a 3) = 8/50

When the combined probabilities contain  an 'OR' we Add the probability values:

Probability of a 3 or a 4  

= 12/50 + 8/50

= 20/50

= 2/5

= 40%.

The correct answer is C, 40%.

Answer:

18 gallons containing 20% solvent and 6 gallons containing 60% solvent

Step-by-step explanation:

the painter needs 24 gallons of paint containing 30% solvent = 7.2 gallons of solvent

let a = 20% solvent paint

let b = 60% solvent paint

a + b = 24

0.2a + 0.6b = 7.2

(replace a = 24 - b in the second equation)

a + b = 24

0.2(24 - b) + 0.6b = 7.2

4.8 - 0.2b + 0.6b = 7.2

0.4b = 7.2 - 4.8 = 2.4

b = 2.4 / 0.4 = 6

a = 24 - 6 = 18

Answer:

2.25 for ONE bottle

Step-by-step explanation:

If you divide 4.50 by 2 the result is 2.25

Answer:

14 inches

Step-by-step explanation:

Length of the hole = 16(½) inches

Length of the dirt = 8(¾)inches

The distance between the top of the pile to the bottom of the hole = ?

Since the dirt is beside the hole and not inside the hole, we can find it's length using addition.

Distance from the top to the bottom = length of dirt + length of the hole

Length of dirt = 8×¾ = 6 inches

Length of the hole = 16 × ½ = 8 inches

Distance from the top of the dirt to the bottom of the hole = (6 + 8) inches

Distance from the top of the dirt to the bottom of the hole = 14 inches

Note: the only way we can use subtraction here is if the hole was filled with dirt, what's the distance that's left

Distance left = length of hole - length of dirt

Distance left = 8 - 6 = 2 inches .

But what the question requested was the distance from the top of the dirt to the bottom of the hole

Answer:

The center is at (3,1) and the radius is [tex]\sqrt{8}[/tex]

Step-by-step explanation:

I am going to assume you meant to write

[tex](x-3)^2+(y-1)^2 = 8[/tex]

Since if both variables were x it would not be a circle:

Then you can find the center and radius using the general formula of a circle:

[tex](x-h)^2 + (y-k)^2 = r^2[/tex]

where the center is at (h,k) and r is the radius

Therefore:

The center is at (3,1) and the radius is [tex]\sqrt{8}[/tex]

Answer:

The speed of the airplane was 800 mph and the wind, 480 mph.

Step-by-step explanation:

distance'd'/speed'v'=travel time't' and the distances are the same. The wind speed works against the plane upwind and helps the plane downwind, of course.

considering x=speed of airplane without wind

c=speed of wind

->Forward trip:

d/v=t

4800/(x-c)=15

320= x-c ---> eq(1)

->Return trip:

4800/(x+c)=10

480 = x+c --->eq(2)

Adding eq(1) and (2)

  x-c + x+c = 320+ 480

x= 800 mph

eq(1)=> 320= x-c

c= 800 - 320

c=480mph

The speed of the airplane was 800 mph and the wind, 480 mph.