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3 years ago

PLS HELPPPP

Mathematics

2 answers:

Delicious77 [7]3 years ago

5 0

Answer:

c = 2 1/4

Step-by-step explanation

2 c of flour= 3/2 c of coco

3 c of flour = x??

cross multiply so

3/2×3÷2

3×3/2÷2

9/2÷2

key flip change (KFC)

9/2 × 1/2

9/4

CHANGE TO MIXED

2 1/4

miv72 [106K]3 years ago

3 0

C. 2 1/4 cups of coco. (Every cup of flour gets 3/4 C of coco) good luck

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What is: 7x + 1.8 + 2.2 = 30 Step-by-step explanation pls! :)

Paha777 [63]

The answer is 3.71
First u add 1.8 and 2.2 and get 4. Then u subtract 30 by the 4 u got. Finally u divide 26 by 7 and get x = 3.71 :)

7 0

3 years ago

Which statements verify that the solution set to |x + 3| < 5 is –8 < x < 2? Check all that apply.

Dmitry_Shevchenko [17]

Answer:

1 and 4

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Allyanna has a cell phone plan that costs 150$ to start. Then there is a $45 charge per month. What is the linear equation we co

Molodets [167]

Answer:

C = cost

m= months

C = $150 + $45m

Step-by-step explanation:

self explanatory

3 0

3 years ago

a farmer wants to fence in a rectangular plot of land adjacent to the north wall of his barn. no fencing is needed along the bar

xenn [34]

The constraint for the maximum enclosed area is the amount the farmer is

willing to spend on fencing.

The width of the plot that will give the most area, y = 83. $\underline{\overline 3}$ feet

The length of the plot that will give the most area, y = 125 feet

Reasons:

The given parameters are;

The cost of fencing per foot = $20

The maximum amount the farmer is willing to spend = $5000

Number of sides of fencing = 3 sides

Cost of the west side of the = Split with neighbor

Solution:

Let, y, represent the length of the fence, and let x represent the width of

the fence, we have;

Length of fence required = y + 2·x

Cost of the fence = 20·y + 20·x + (20÷2)·x = 20·y + 30·x

Therefore;

Maximum amount to be spent on the fence, 5000 = 20·y + 30·x

$\therefore y = \dfrac{5000 - 30 \cdot x}{20} = 250 - \dfrac{3}{2} \cdot x$

$y = \mathbf{250 - \dfrac{3}{2} \cdot x}$

Area of a rectangle = Length × Width

The enclosed rectangular area of the fencing, A = y × x

$\therefore A = \left(250 - \dfrac{3}{2} \cdot x\right) \cdot x = 250 \cdot x - \dfrac{3}{2} \cdot x^2$

$\therefore A = -\mathbf{ \dfrac{3}{2} \cdot x^2 + 250 \cdot x}$

The leading coefficient of the quadratic function of the area is negative,

therefore, the function only has a maximum point.

At the point of the most area, the slope, $\dfrac{dA}{dx} = 0$

Finding the value of x at the maximum point, we get;

$\dfrac{dA}{dx} = \mathbf{ \dfrac{d}{dx} \left( 250 \cdot x - \dfrac{3}{2} \cdot x^2\right)} = 250- 3 \cdot x = 0$

Therefore;

$\mathrm{ The \ width \ of \ the \ plot \ that \ will \ enclose \ the \ area}, \ x = \dfrac{250}{3} \ feet = \underline{83.\overline 3 \ feet}$

$\mathrm{ The \ length \ of \ the \ plot \ that \ will \ enclose \ the \ area}, \ y = 250 - \dfrac{3}{2} \times \dfrac{250}{3} = 125$

The length of the plot that will give the most area, y = 125 feet

Learn more here:

brainly.com/question/16337916

brainly.com/question/16545343

6 0

3 years ago

It cost ruby $4 to send 48 text messages what was her cost of texting in texts per dollar? Express your answer in simplest form

alexandr402 [8]

Answer:

Ruby pays a dollar every 12 messages.

Step-by-step explanation:

It costs Ruby $4 to send 48 text messages. To find the unit rate, you would divide 48 by 4. So the result would lead to 12 messages per dollar.

3 0

4 years ago