3 years ago

Question 7 of 10 What is the solution to this equation

Mathematics

1 answer:

tatyana61 [14]3 years ago

5 0

Answer:

x = 4

Step-by-step explanation:

x + 4(x+5) = 40 (Given)

x + 4x + 20 = 40 (Distribute the 4 into the x and 5)

5x + 20 = 40 (Add like terms)

5x = 20 (Subtract 20 on both sides)

x = 4 (Divide 5 on both sides)

You might be interested in

What is differentiation....

Whitepunk [10]

Answer:

ye mona lisha h thik h acchi h

7 0

3 years ago

Read 2 more answers

What is 6/15 written as a decimal?

Allushta [10]

It will be C cause you divid 15 and 6

3 0

3 years ago

Read 2 more answers

A girl walked 6km from her house to a market and discovered that she had covered 4/5 of the distance to the market how far is th

Korvikt [17]

Answer: $7.5\ km$

Step-by-step explanation:

Given

Girl has traveled 6 km from her house

She has covered $\frac{4}{5}$ of the distance

Suppose the total distance is x

$\therefore 6=\dfrac{4x}{5}\\\\\Rightarrow x=\dfrac{30}{4}\\\\\Rightarrow x=\dfrac{15}{2}\ \text{km}\\\\\Rightarrow x=7.5\ \text{km}$

3 0

3 years ago

Find the equation of the ellipse with the following properties.

zalisa [80]

Equation of an ellipse:

(x-h)²/a² + (y-k)²/b² = 1
Since it passes through the origin (0,0) , then h = k = 0 hence the equation:
(x-0)²/a² + (y-0)²/b² = 1
x²/a² + y²/b² = 1

2a = major axis = 2.|5| + |-5| = 10. then a = 5 and a² = 25
2b = minor axis = 2.|3| + |-3| = 6. then b = 3 and b² = 9

Then the final equation is:
x²/25 + y²/9 = 1

6 0

3 years ago

What is 254−−√+524−−√ in simplified radical form?<br><br><br> Enter your answer in the box.

Vesna [10]

Answer:

Step-by-step explanation:

2√54+5√24

2 * sqrt(9*6) + 5*sqrt(4*6)

2*sqrt(9) *sqrt(6) + 5*sqrt(4) * sqrt(6)

2*3 sqrt(6) + 5*2 sqrt(6)

6sqrt(6)+10sqrt(6)

16sqrt(6)

8 0

2 years ago

Read 2 more answers