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2 years ago

3. if y varies directly as x and y=23.1 when x=36.3, find y when x=11.

Mathematics

1 answer:

STatiana [176]2 years ago

8 0

Answer:

the answer is 5 because thats the varible

Step-by-step explanation:

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Work out th following in standard form 3000 x 5000

Sedaia [141]

5x10^3 is the answer

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Factorise and solve : x^3-x^2-4x+4

Alika [10]

(x - 1)(x - 2)(x + 2)

note that the sum of the coefficients 1 - 1 - 4 + 4 = 0

thus x = 1 is a root and (x - 1 ) is a factor

dividing x³ - x² - 4x + 4 by (x - 1)

x³ - x² - 4x + 4 = (x - 1)(x² - 4 ) (note (x² - 4 ) is a difference of squares )

x³ - x² - 4x + 4 = (x - 1)(x - 2)(x + 2)

(x - 1)(x - 2)(x + 2 ) =0

x - 1 = 0 ⇒ x = 1

x - 2 = 0 ⇒ x = 2

x + 2 = 0 ⇒ x = - 2

solutions are x = 1 or x = ± 2

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2 years ago

Expain the diffents between numerical expressions and algebraic expressions

Oduvanchick [21]

<h2>Numerical expressions are numbers and signs, like below. The following are some examples of numerical expressions, numerical expressions do not use letters. 4 + 20 – 7, (2 + 3) – 7, (6 × 2) ÷ 20, 5 ÷ (20 × 3) An algebraic expression uses letters and it says you to find "x/y/z". Example; 4+20xy-7x, (2x+3) - 7y+20.</h2>

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2 years ago

What is the solution for the equation -15=5(3y-10)-5y

marissa [1.9K]

Answer:

$\Large\boxed{\sf{y=\dfrac{7}{2} }}$

Step-by-step explanation:

Isolate the variable of y from one side of the equation.

-14=5(3y-10)-5y

<u>First, switch sides.</u>

$\sf{5\left(3y-10\right)-5y=-15}$

Use the distributive property.

<u>DISTRIBUTIVE PROPERTY:</u>

A(B-C)=AB-AC

5(3y-10)

Multiply by expand.

5*3y=15y

5*10=50

15y-50-5y

15y-5=10y

= 10y-50

10y-50=-15

Add by 50 from both sides.

10y-50+50=-15+50

Solve.

10y=35

Then, you divide by 10 from both sides.

10y/10=35/10

Solve.

Divide the numbers from left to right.

35/10=7/2

y=7/2

Divide is another option.

7/2=3.5

$\Longrightarrow: \boxed{\sf{y=\dfrac{7}{2}}}$

<u>Therefore, the correct answer is y=7/2.</u>

I hope this helps. Let me know if you have any questions.

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1 year ago

Julio wants to break his school’s scoring record of 864 points during his 24-game basketball season. During the first 8 games of

Alecsey [184]

Answer:

Hello There the Correct answer is 8 + 24 x greater-than 864.

<h3> Explanation</h3>

Step 1: 864-56= 608

Step 2: 24-8= 16

Step 3: 608/16=38

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3 years ago

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