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2 years ago

(9 x 10⁶)(8 x 10⁻⁴)= ?

Mathematics

2 answers:

givi [52]2 years ago

8 0

Answer: 7.2 x 10^3 or 7200

Step-by-step explanation:

ycow [4]2 years ago

7 0

Answer: 7.2x10 3

Step-by-step explanation:

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Joe and Josh each want to buy a video game. Joe has $14 and saves $10 a

Aleks [24]

Answer:

Number of week they have same amount = 4 week

Step-by-step explanation:

Given:

Amount Joe have = $14

Joe's saving per week = $10

Amount Josh have = $26

Josh saving per week = $7

Find:

Number of week they have same amount

Assume;

Number of week they have same amount = a

So,

(14 + 10a) = (26 + 7a)

3a = 12

a = 4

So,

Number of week they have same amount = 4 week

3 0

2 years ago

gina pasted 3 stickers in a book. if she added one sticker to her collection every day, what equation represents the relationshi

lukranit [14]

Answer:

The answer to your question is

Number of stickers = number of days + 3

Step-by-step explanation:

- To find the equation of the line that represents the situation, first, find the slope.

Slope = m = $\frac{y2 - y1}{x2 - x1}$

m = $\frac{4 - 3}{1 - 0} = \frac{1}{1} = 1$

- Find the equation of the line

y - y1 = m(x - x1)

y - 4 = 1(x - 1)

y - 4 = x - 1

y = x - 1 + 4

y = x + 3

y = number of stickers

x = days

Number of stickers = number of days + 3

3 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

2 years ago

Please help me pleasssseeee <3

Sophie [7]

Answer:

1st ans

(8x+19)=(9x+9)(vertically opposite angle)

19-9=9x-8x

x=10

2nd ans

(3x-31)=(x+59)(exterior alternate angle)

3x-x=59+31

2x=90

x=90/2

x=45

3rd ans

(5x-33)+(6x+4)=180(straight angle )

11x-29=180

11x=180+29

x=209/11

x=19

8 0

2 years ago

What will you get when you add two integers

dybincka [34]

Well, it depends if its positive or negative. 2 positive integers will equal a positive, 2 negatives will equal a negative. A negative and a positive will depend.

8 0

2 years ago

Read 2 more answers