somebody can you please help me?!?!?!?!?

Answer:

90 kg of stone

Step-by-step explanation:

Adam has 8 x 25 = 200

19 x 22.5 = 427.5

20 x 50 = 1000

He has enough cement and sand

He needs 1090 - 1000 = 90 kg of stone

He needs 2 bags of stone

Answer:

4. (x+3)^2 =16

Step-by-step explanation:

Rewrite x^2 +6x -7 = 0 in quadratic form by compliting the square

x^2 +6x = 7 divide 6 by 2 ans square so 6/2 = 3, [tex]3^{2} = 9[/tex] add 9 on each side

x^2 +6x +9 = 7+9 =16 remember that [tex](a + b)^{2} = a^{2} +2ab + b^{2}[/tex]

[tex](x +3)^{2} = 16[/tex]

use this site if it helps for your question desmos.com

Answer:

1 to 3 and V= 1/2 Bh

Step-by-step explanation:

the pyramid is like a triangle there is three sides. There is only one way of the whole pyramid you can cut.

Answer:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Step-by-step explanation:

Answer:

volume= length ×width×height

2×2.5×4.5

22.5

The volume of a right rectangular prism with sides 2 m , 2.5 m and 4.5 m will be 22.5 m³.

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

All the sides of a rectangle are;

2 m , 2.5 m and 4.5 m

Now,

Since, we know that;

Volume of rectangle = Length x Width x Height

Substitute all the values we get;

Volume of right rectangular prism = 2 x 2.5 x 4.5

                                                     = 22.5 m³

Thus, The volume of a right rectangular prism with sides 2 m , 2.5 m and 4.5 m will be 22.5 m³.

Learn more about the rectangle visit:

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Answer:

13 and 27

Step-by-step explanation:

x+y=40

x- smaller

2y-x=41

x=2y-41

Now to plug it into our first equation:

3y-41=40

3y=81

y=27

x=13

[tex]volume = lwh \\ = 15 \times 4 \times 5 \\ = 300 {in}^{3} [/tex]

hope this helps

brainliest appreciated

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Answer:

The length of the prism is

✔ 15

in.

The width of the prism is

✔ 4

in.

The height of the prism is

✔ 5

in.

The volume of the prism is

✔ 300

in.3.

Step-by-step explanation:

On EDG assignment

Answer:

180 in^3

Step-by-step explanation:

5•18=90in^2

90•2=180in^3

Answer:

(4,-25)

Step-by-step explanation:

I graphed this on the desmos graphing calculator.

Hi!

I'm Happy to help you today!

The answer would be B. or 42,240!

The reason is because if you do the math and all that it gives you the answer of 42,240 or B. !

-LimitedLegxnd

-If you like my answer make sure to hit that Heart! Also to show others how helpful my answer is click the stars!

-Question asker if you really liked my answer mark mine brainliest!

Answer:

what?

Step-by-step explanation:

Answer:

288π

That is exact value in terms of pi.

Step-by-step explanation:

So if the diameter is 12, the radius is 6.

The volume of a sphere is [tex]\frac{4}{3} \pi r^3[/tex]

Since r = 6, the volume is [tex]\frac{4}{3} * 216\pi[/tex]

Which is 288π

Answer:

904.78 is the answer

volume = 4/3 π r cubed

Answer:no

Step-by-step explanation:

A function must have each x value map onto 1 y value. The x value 11 maps to two y values (1,3)

Answer:

x + 1| + 3 g(x) = |x + 3| – 1 g(x) = |x – 1| + 3 g(x) = |x + 3| + 1

Step-by-step explanation:

Answer:

g(x) = |x – 1| + 3

Step-by-step explanation:

Definitely right!

Answer:

10^-3 is 1/1000 and 2^-3 is 1/16

Step-by-step explanation

Answer:

I think the correct answer is 10^-3 1/1000 and 2^-3 is 1/16

Step-by-step explanation:

-edit: The other user copied my answer! ^_^

Answer:

y=7* (0.5)^x

Step-by-step explanation:

We are given that when x increases from 'a' to 'a+2' then y must increase by a factor of 1/4=0.25.

i.e. when x=a and x'=a+2.

then y/y=0.25 where y' is the function after putting x' to the old function.

Answer:

x = (3 − √5) / 2, (3 + √5) / 2, and 1

Step-by-step explanation:

Using rational root theorem, ±1 are possible roots.  By trial and error, we find that +1 is a root.  Therefore, x − 1 is a factor.  Knowing this, we can use grouping or long division.  Using grouping:

x⁴ − 5x³ + 8x² − 5x + 1 = 0

x⁴ − 5x³ + 4x² + 4x² − 5x + 1 = 0

x² (x² − 5x + 4) + 4x² − 5x + 1 = 0

x² (x − 4) (x − 1) + (4x − 1) (x − 1) = 0

(x² (x − 4) + 4x − 1) (x − 1) = 0

(x³ − 4x² + 4x − 1) (x − 1) = 0

Repeating the process, possible rational roots of x³ − 4x² + 4x − 1 are ±1.  We already know -1 isn't a root.  By trial and error, we find that +1 is again a root.  Using grouping to factor:

(x³ − 4x² + 3x + x − 1) (x − 1) = 0

(x (x² − 4x + 3) + x − 1) (x − 1) = 0

(x (x − 3) (x − 1) + x − 1) (x − 1) = 0

(x (x − 3) + 1) (x − 1) (x − 1) = 0

(x² − 3x + 1) (x − 1)² = 0

To find the roots of x² − 3x + 1, we use the quadratic formula.

x = [ -(-3) ± √((-3)² − 4(1)(1)) ] / 2(1)

x = [ 3 ± √(9 − 4) ] / 2

x = (3 ± √5) / 2

So the roots are x = (3 − √5) / 2, (3 + √5) / 2, and 1.

Answer:

f(x) = |x + 1| + 1

Step-by-step explanation:

A reflection over the y-axis followed by a reflection over x-axis is equivalent to a reflection about origin.

f(x) = -|x-1| -1

reflection over the x-axis:

-f(x) = (-1)*(-|x-1| -1) = |x-1| +1

reflection over the y-axis of the previous function:

-f(-x) = |-x-1| +1 = |x + 1| + 1

which is the reflection of f(x) about the origin

Answer:

Exact form is [tex]x=-\frac{2}{65}[/tex]

And the decimal form is x  =  −0.0307692

Answer:

The value of x is -2/65

Step-by-step explanation:

The given equation is

8 - 65x = 10

We are asked to find the value of x.

Step 1: Subtract 8 from both sides

-8 + 8 - 65x = 10 - 8

-65x = 2

Step 2: Divide both sides by -65

-65x/-65 = 2/-65

x = -2/65

Therefore, the value of x is -2/65

Answer:

D

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = - 1 [tex]\frac{1}{2}[/tex] -(- [tex]\frac{1}{2}[/tex] ) = - 1

d = -  2 [tex]\frac{1}{2}[/tex] - (- 1 [tex]\frac{1}{2}[/tex] ) = - 1

d = - 3 [tex]\frac{1}{2}[/tex] - (- 2 [tex]\frac{1}{2}[/tex] ) = - 1

This indicates the sequence is arithmetic with explicit formula

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - [tex]\frac{1}{2}[/tex] and d = - 1 , thus

[tex]a_{n}[/tex] = - [tex]\frac{1}{2}[/tex] - 1 (n - 1) = - [tex]\frac{1}{2}[/tex] - n + 1 = [tex]\frac{1}{2}[/tex] - n , where n = 1, 2, 3, 4, ......

Answer:

oh text me for more information

Step-by-step explanation:

Answer:

a) a quadrilateral that is not a parallelogram because adding the same will make it a diamond like shape which 2 sides are parallel

Step-by-step explanation:

PLZ MARK ME BRAINLIEST!

Answer: 7

you cant put seven in groups of 2 , 3 , 5 ,or 6 so theres 7 pennies

Answer:

30 ounces of solution A

20 ounces of solution B

Step-by-step explanation:

x ounces of solution A

y ounces of solution B

x + y = 50

0.7x  ounces  of salt in the solution A

0.95y ounces  of salt in the solution B

0.8*50 = 40 ounces of salt  in 50 ounces of 80% solution

0.7x + 0.95y = 40

x + y = 50

0.7x + 0.95y = 40

x= 50 - y

0.7(50 - y) + 0.95y = 40

35 - 0.7y + 0.95y = 40

0.25y = 5

y = 20 ounces of solution B

x = 50 - y = 50 - 20 = 30 ounces of solution A

Answer:

-0.0833

Step-by-step explanation:

Answer:

Tan r = z/y

Step-by-step explanation:

Tangent = opposite / adjacent

Line XY, which is z, is opposite of angle r.

Line XZ, which is y, is adjacent to angle r.

The equation would be Tan r = z/y.

Answer: No, you can't find the tangent ratio of angle rº because the tangent ratio applies to any right triangle, and it applies to right triangles ONLY.

Answer:

C

Step-by-step explanation:

Xepa i took the test got it right

Answer:

$17,740.19

Step-by-step explanation:

A = P x e^rt

   = 3,700 x e^(0.0825 x 19)

   = $17,740.19

Answer: 75 tacos

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

3 T + 4 B =425

T + B = 125

Where T is the number of tacos sold, and B is the number of burritos sold.

Multiplying the second equation by 3, and subtracting it to the first equation:

3 T + 4 B =425

3T + 3B = 375

___________

B =50

Replacing B in any equation:

T + B = 125

T +50 =125

T =125-50

T = 75

Feel free to ask for more if needed or if you did not understand something.