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3 years ago

What was the resulting equation ?

Mathematics

1 answer:

zaharov [31]3 years ago

8 0

From the first equation we get y = 2x. Subbing this into the second equation, we get:

x^2 (2x)^2
------ - --------- = 1, or
25 49

x^2 4x^2
------ - --------- = 1
25 49

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Sanjay sold 8kg of sugar at Rs 28 per kg and earned a profit of Rs 40 What was the cost price per kg

JulijaS [17]

Answer:

Step-by-step explanation:

8 kg * 28 per kg = Rs. 224

Profit = Rs. 40

CP = SP - Profit

224 - 40

184

184 / 8

4 0

2 years ago

Please help with these 3 pretty easy problems and explain how you got it!!! 100 POINTS AND BRAINLIEST!!!! Serious answers please

natita [175]

Answer:

Step-by-step explanation:

(x-3)/18=12/9, cross multiply

9(x-3)=18(12)

9x-27=216, add 27 to each side

9x=243, divide each side by 9

x=27

(x-16)/(x+6)=3/5, cross multiply

5(x-16)=3(x+6)

5x-80=3x+18, subtract 3x from each side

2x-80=18, add 80 to each side

2x=98, divide each side by 2

x=49

Since the triangles are similar we can say that

25/(4x-1)=10/(x+5), cross multiply

25(x+5)=10(4x-1)

25x+125=40x-10, subtract 40x from each side

-15x+125=-10, subtract 125 from each side

-15x=-135, divide each side by -15

x=9

7 0

2 years ago

Read 2 more answers

Given a polynomial function f(x), describe the effects on the y-intercept, regions where the graph is increasing and decreasing,

Jobisdone [24]

A. When f(x) becomes g(x) = f(x) + 2, the graph of f(x) is shifted upward 2 units.

B The graph of f(x) is reflected in the x-axis and then vertically compressed by a factor of 1/2.

7 0

3 years ago

When do we say that the computed solution or root of a quadratic equation is<br>extraneous?<br><br>

scoray [572]

Answer:

raising both sides of the equation to a certain power in order to eliminate radicals may result in the creation of extraneous roots

Step-by-step explanation:

7 0

3 years ago

An ant has a mass of approximately 4 × 10–3 grams and an elephant has a mass of approximately 8 x 106 grams. About how many time

Butoxors [25]

Ant's mass: 4 x 10 - 3
Elephant's mass: 8 x 106

First, we should evaluate these expressions by using PEMDAS. PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. From P to S is the order that we must follow these steps.

So first for the ant's mass, we have to multiply first since the M comes before the S, resulting in 40 - 3 grams.
Next we have to subtract, leading us to getting 37.

For the elephant since there is only one operation, all we have to do is multiply, which equals 848.

In order to see how many times larger the elephant is than the ant, we have to divide the elephant's mass by the ant's.
848/37 = 22.9

Since you only want an approximate answer, you can put down 23 or even go a bit more vague and put down 20.

5 0

3 years ago