All categories

2 years ago

Which expression is equivalent to 5 a + 20?

Mathematics

1 answer:

KonstantinChe [14]2 years ago

4 0

The answer is 5(a+4)!!!!!!

You might be interested in

Whats the answer for breaking apart question 7×3

kenny6666 [7]

Are you asking what 7 times 3 is? Or what is it you're asking

5 0

3 years ago

Read 2 more answers

Anyone know how to find the area with the missing hypotenuse? Thank you!!!

suter [353]

Answer:

$15 {cm}^{2}$

Step-by-step explanation:

There's no need of hypotenuse for finding area of the triangle. To find the area of a triangle ,

Formula is = $\frac{1}{2} \times base \times height$

Base of the triangle = 10 cm

Height of the traingle = 3 cm

Area of the triangle = $\frac{1}{2} \times 10 \times 3 = 15 {cm}^{2}$

5 0

3 years ago

Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

4 0

3 years ago

In the triangle below, what is the approximate value of x?

Allushta [10]

Answer:

apply BPT

$\frac{4}{18} = \frac{x}{22}$

solve it now

x = 88/18 approx = 4.9 inches

3 0

2 years ago

Round the number to the place of the underlined digit.<br><br> 4.327 (The underlined Digit is 3)

Genrish500 [490]

Answer:4.3

You round to the tenths place

5 0

2 years ago