Help please? I am stuck

Option D is correct.

Answer:

[tex]\large\boxed{x=\dfrac{5}{4},\ y=\dfrac{15}{16}}[/tex]

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}y=\dfrac{3}{4}x&(1)\\\dfrac{5}{2}x+2y=5&(2)\end{array}\right\\\\\text{Substitute}\ (1)\ \text{to}\ (2):\\\\\dfrac{5}{2}x+2\left(\dfrac{3}{4}x\right)=5\\\\\dfrac{5}{2}x+\dfrac{3}{2}x=5\\\\\dfrac{5+3}{2}x=5\\\\\dfrac{8}{2}x=5\\\\4x=5\qquad\text{divide both sides by 4}\\\\x=\dfrac{5}{4}[/tex]

[tex]\text{Put the value of}\ x\ \text{to (1)}\\\\y=\dfrac{3}{4}\cdot\dfrac{5}{4}\\\\y=\dfrac{15}{16}[/tex]

Answer:

Step-by-step explanation:

y = 3x/4 .........(1)

5x/2 + 2y = 5 .......(2)

Putting (1) into (2)

5x/2 + 2(3x/4) = 5

5x/2 + 3x/2 = 5

Multiply each term by 2

5x + 3x = 10

8x = 10

x = 10/8

x = 5/4

x = 1 1/4

And y = 3x/4

y = 3(5/4) ÷ 4

y = 15/4 ÷ 4

y = 15/(4×4)

y = 15/16

Answer:

It can be a parallelogram, a square, a rectangle and rhombus too.

Answer:

There are many special types of quadrilateral.

A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel .

A parallelogram also has the following properties:

Opposite angles are congruent;

Opposite sides are congruent;

Adjacent angles are supplementary;

The diagonals bisect each other.

A rectangle is a parallelogram with four right angles, so all rectangles are also parallelograms and quadrilaterals. On the other hand, not all quadrilaterals and parallelograms are rectangles.

A rectangle has all the properties of a parallelogram, plus the following:

The diagonals are congruent.

A rhombus is a parallelogram with four congruent sides. The plural of rhombus is rhombi . (I love that word.)

A rhombus has all the properties of a parallelogram, plus the following:

The diagonals intersect at right angles.

A square can be defined as a rhombus which is also a rectangle – in other words, a parallelogram with four congruent sides and four right angles.

A trapezoid is a quadrilateral with exactly one pair of parallel sides. (There may be some confusion about this word depending on which country you're in. In India and Britain, they say trapezium ; in America, trapezium usually means a quadrilateral with no parallel sides.)

Step-by-step explanation:

you should be able to find your answer in this i rlly hope it helps you

Answer:

$4200

Step-by-step explanation:

15 floor times 40 tiles

15 X 40 = 600 tiles

so 600 tiles times 7 dollars

600 X 7 = 4200 dollars

Final answer:

To find the total cost of floor tiles for 15 kitchen floors, multiply the total number of tiles by the cost per tile. The builder will need 600 tiles (15 floors × 40 tiles) and with each tile costing $7, the total cost comes to $4200.

Explanation:

The student is asking about the total cost of floor tiles needed for an apartment building project. To calculate this, we need to find the total number of tiles used and then multiply this by the cost per tile. There are 15 kitchen floors, with each floor using 40 tiles. Each tile costs $7.

First, let's find out how many tiles are needed in total:

Number of floors × Number of tiles per floor = Total number of tiles

15 floors × 40 tiles per floor = 600 tiles in total

Next, let's calculate the total cost:

Total number of tiles × Cost per tile = Total cost

600 tiles × $7 per tile = $4200

Therefore, the builder spends a total of $4200 on floor tiles for the 15 kitchen floors.

Answer:

-13

Step-by-step explanation:

add two but put a negative .

Here is the equation representing Rick's score:

17 + r = 45

Solving for r, we get r = 45 - 17.

So, what is 45 - 17?

Answer:

The smaller number is 22

The larger number is 30

Step-by-step explanation:

L + S = 52

L = S + 8

Set both equations equal to L.

S + 8 = -S + 52

+S        +S

2S + 8 = 52

     - 8    - 8

2S = 44

S = 22

To find the larger number, plug 22 in as S into the equations.

L = 30

Final answer:

The two numbers are 22 and 30, with the smaller number being 22 and the larger one being 30 (which is 8 more than the smaller number).

Explanation:

The sum of two numbers is 52, and the larger number is 8 more than the smaller number. Let's denote the smaller number as x and the larger number as x + 8. The equation to represent their sum is:

x + (x + 8) = 52

By combining like terms, the equation simplifies to:

2x + 8 = 52

Subtract 8 from both sides of the equation to isolate the term with x:

2x = 44

Divide by 2 to solve for x:

x = 22

Now that we have the value of the smaller number, we can find the larger number:

x + 8 = 22 + 8 = 30

So, the two numbers are 22 and 30.

Answer:

24ml

Step-by-step explanation:

First, calculate the amount needed in mg for each day.

The rate given for each dose is 150mg every 6 hours. Since there are 24 hours in a day, divide the number of hours in a day by how often to give the medication to get the number of doses each day.

24 hours ÷ 6 hours = 4 doses daily

The total mg each day is the number of doses daily multiplied by the amount in each dose.

4 doses daily X 150 mg = 600mg daily

Calculate how many mg of medication are in 1 ml given by the pharmacy.

75mg ÷ 3ml = 25mg/ml

Divide the mg of medication daily by the concentration the pharmacy dispenses.

600 mg daily ÷ 25mg/ml = 24ml

You will administer 24ml daily.

Check by doing these steps backwards:

24ml per day gives 600 mg of medication because there are 25mg per 1 ml. 24ml X 25mg = 600mg

Each day you need to administer 150mg X (24h ÷ 6h) of medication.

150mg X 4 = 600mg, which is the correct amount.

Answer:

125

Step-by-step explanation:

2375/19

Answer:ok boomer

Step-by-step explanation:

Answer:

The value of b for the intersection of two lines at given points is 4

Step-by-step explanation:

Given as :

The two line equations are

y = 2 x + 7                ..........A

And

y = 2.5 x + b            ............B

Since, The two lines are intersecting at point  [tex]x , y[/tex] = - 6 , - 5

Now Solving equation A and B we get

2 x + 7 = 2.5 x + b

Or, 7 - b = 2.5 x - 2 x

Or, 7 - b = . 5 x

∵ intersecting points are x , y = - 6 , - 5

putting the value of y from points

i.e 7 - b = . 5 × ( - 6 )

Or, 7 - b = 3

Or, b = 7 - 3

∴  b = 4

So, The value of b = 4

Hence, The value of b for the intersection of two lines at given points is 4 Answer

Answer:

Step-by-step explanation:

1 liter = 1000 ml....so 2 liters and 450 ml = (2* 1000) + 450) = 2450 ml

5 liters = (5 * 1000) = 5000 ml

5000 ml - 2450 ml = 2550 ml or 2 liters and 550 ml <== this is how much is left

so he used 2450 ml in 1 month....and he has 5000 ml

5000/2450 ≈ 2.04 months <===  it will be all used up

Answer:

Step-by-step explanation:

1 litre = 1000 ml

5 liter = 5 * 1000 = 5000 ml

2 liter 450 ml = 2 liter + 450 ml = 2000 ml + 450 ml = 2450 ml

Oil left = 5000 - 2450 = 2550 ml

2550 - 2450 = 100 ml

4 liter 900ml is used in two months and 100 ml will be left over

The question is about finding the number of ways to choose 2 items without replacement from a set of 3 items using combinatorics, and there are 3 different ways to do so.

The question deals with the concept of combinations in probability and combinatorics. When choosing 2 objects from a set of 3 items (a pencil, an eraser, and a desk) without replacement, we can use the combination formula C(n, k) = n! / (k!(n-k)!), where n is the total number of items and k is the number of items to choose.

In this case, we have 3 items and we want to choose 2, so we plug the values into the formula to get the number of combinations without replacement.

Using the combination formula, C(3, 2) = 3! / (2! × (3-2)!) = 3.

Therefore, there are 3 different ways to choose 2 objects from the set of a pencil, an eraser, and a desk.

Answer:

197+413

=197+413

=610

Step-by-step explanation:

this is how i was taught

Answer:

D) 12

Step-by-step explanation:

3x+x=2x+24

4x=2x+24

4x-2x=24

2x=24

x=24/2

x=12

Answer:

18 cm

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ← r is the radius

Given

C = 36π, then

2πr = 36π ( divide both sides by 2π )

r = [tex]\frac{36\pi }{2\pi }[/tex] = 18

Answer:

-12s^2 + 11st - 2t^2

Step-by-step explanation:

Answer:

Both accounts will have $450

Step-by-step explanation:

Tina y= 25x+220

Cliff y= 35x+100

we can use substitution to solve this problem so the formatting would be:

25x+220=35x+100

subtract 25x from both sides

220=10x+100

Subtract 100 from both sides

120=10x

Divide both sides by 10

12=x

now that we have an x value we can plug it into either equation.

y=100+35(10)

y=100+350

y=450

The required value of x that satisfies the equation x/4 = -7 is x = -28.

To solve for x when x divided by 4 equals -7, we can follow these steps:

Start with the equation: x/4 = -7.

To isolate x, we want to get rid of the division by 4. We can do this by multiplying both sides of the equation by 4:

(4)(x/4) = (4)(-7).

The 4 on the left side cancels out with the 4 in the denominator, leaving us with:

x = -28.

Therefore, the value of x that satisfies the equation x/4 = -7 is x = -28.

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Final answer:

The value of x in the equation x divided by 4 equals -7 is -28. To find x, we multiply both sides of the equation by 4, resulting in x=-28. Substituting back into the original equation confirms the solution is correct.

Explanation:

To solve the equation x divided by 4 equals -7, we want to find the value of x. We can do this by performing the inverse operation of division, which is multiplication. So if x divided by 4 is -7, we can multiply both sides of the equation by 4 to solve for x:

x / 4 = -7
4 * (x / 4) = 4 * (-7)
x = -28

So, the value of x is -28. As a check, you can substitute -28 back into the original equation:

-28 / 4 = -7

Which simplifies to:

-7 = -7

This confirms that the solution is correct since it results in an identity, showing that the left side of the equation is equal to the right side.

Answer:

24 cm

Step-by-step explanation:

Using the formula for a right cylinder: V = (pi)(r^2)(h) you can plug in the numbers provided

384(pi) = (pi) × (4^2) × h

<solve for h>

384(pi) = (pi) × (16) × h

<divide by 16pi>

24 = height

Answer:

24 = h

Step-by-step explanation:

V = πr²h

384π = π(4)²h

384π = 16πh

24 = h

Answer:

Step-by-step explanation:

6 1/2 + 2 3/4=M

M=9 1/4

Answer:

x=5 y=9

Step-by-step explanation:

hope this helps :) have a nice day :) :) :)

Answer:

400

Step-by-step explanation:

1 meter = 100 centimeters

8/2 = 4

4 x 100 = 400

Answer:

Step-by-step explanation:

1 meter = 100 centimeters.....so 2 meters = 200 cm

split into 8 equal pieces....200 / 8 = 25 cm <=== each piece is 25 cm

The correct answer is; Slings should be inspected before each use.

Further explanation:

Prior to starting the workday, each sling should be visually inspected by the operators. The slings need to be inspected for stretching, gouges, and excessive wear. Also, any nicks in the sling should be checked for. If any of these things are on the slings, the sling needs to be taken out of service immediately. This should be done before starting work.

There are six different types of chains that are used, they are;

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The correct statement about slings is that they should be inspected before each use. Damaged slings should be removed immediately, not at day's end. Alloy steel chains aren't impervious to damage.

Out of the given options, the true statement about slings is that 'Slings should be inspected before each use'. To ensure the safe operation of a sling, it's crucial to examine it for any damages or wear and tear before every use.

Slings are typically used to lift or move heavy objects, and any damages can lead to accidents or equipment failure. On the other hand, the statement about alloy steel chains is incorrect as they are not impervious to damage.

Lastly, damaged slings should not be waited until the end of the day to be removed from service, they should be removed immediately upon discovering the damage.

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Answer:

should be a

Step-by-step explanation:

Answer:

Quadrent One Two Three and Four

Step-by-step explanation:

The x- and y-axes divide the coordinate plane into four regions, called quadrants, named Quadrant I, II, III, and IV. They are numbered counterclockwise, with different quadrants containing points with different combinations of positive and negative x- and y-values.

The x- and y-axes of the coordinate plane divide the entire plane into four regions. These regions are known as quadrants. They are named as Quadrant I, Quadrant II, Quadrant III, and Quadrant IV.

The quadrants are numbered in a counterclockwise direction. Quadrant I, on the top right, contains all points with positive x- and y-values. Quadrant II, on the top left, contains all points with negative x-values and positive y-values. Quadrant III, on the bottom left, contains all the points with negative x- and y-values.

Last, Quadrant IV on the bottom right contains all the points with positive x-values and negative y-values.

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Answer: Set A

Step-by-step explanation:

Because both x and y have to have a even number.

Example: (1,2) (2,4)...ect

Answer:

2794 m^2

Step-by-step explanation:

Area of Triangle - Area of Circle

1/2bh - piR^2

4050 - 1256

= 2794

The approximate area of the shaded region is, 2794 m²

Area is defined as the total space taken up by a flat (2-D) surface or shape of an object.

Given a right triangle with a circle cut out of it,

Area of circle = π*Radius²

Area of triangle = 1/2*base*height

Area of circle = π*20² = 1256 m²

Area of triangle = 1/2*90*90 = 4050 m²

Area of the shaded region = Area of triangle - Area of circle

Area of the shaded region = 4050 - 1256 = 2794 m²

Hence, The approximate area of the shaded region is, 2794 m²

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Answer:

a. Jake told the negative value of the expression which cannot be equivalent to the original expression.

b. 10 - [tex]$ \frac{\textbf{3}}{\textbf{7}} $[/tex] g

Step-by-step explanation:

a. The given expression is: [tex]$ \frac{-3}{7}g + 10 $[/tex]

Multiplying through out by -, we get:

[tex]$ - 10 + \frac{3}{7}g $[/tex] which was the expression given by Jake. Since, it is the negative of the original one, they cannot be equivalent.

b. [tex]$ -\frac{3}{7}g + 10 = 10 - \frac{3}{7}g $[/tex]

[tex]$ = \frac{70 - 3g}{7} $[/tex]

Hence, the answer.