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3 years ago

What is the number in standard form? 4.9×10^8

1 answer:

6 0

In order to get the answer to this question you have to remember that if the exponent is positive you need to move to the right, and if the exponent is negative you got to move to the left.

$4.9\times10^8$
Positive so move to the right 8 times....
$4.9\times10^8 = 490000000.$
$= 490000000.$

Therefore the answer is "490000000."

Hope this helps!

Nonportrit

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What is the height of the triangular prism below if the volume equals 1,638 cubic millimeters? 65 mm 63 mm 26 mm 28 mm.

sergejj [24]

Answer:

The height of the triangular prism is $26\ mm$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The volume of the triangular prism is equal to

$V=Bh$

where

B is the area of the triangular base

h is the height of the prism

Find the area of the base B

$B=\frac{1}{2}(7)(18)=63\ mm^{2}$

we have

$V=1,638\ mm^{3}$

$h=x\ mm$

substitute and solve for x

$1,638=(63)x$

$x=1,638/(63)=26\ mm$

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4 years ago

125 decreased by a number

Vedmedyk [2.9K]

Answer:

125 - n

Step-by-step explanation:

n is unknown.

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4 years ago

Help me I keep getting it wrong

gtnhenbr [62]

Answer:

see explanation

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{2}{3}$ x - 6 ← is in slope- intercept form

with slope m = $\frac{2}{3}$

Parallel lines have equal slopes , then

y = $\frac{2}{3}$ x + c ← is the partial equation

To find c substitute (9, 2) into the partial equation

2 = 6 + c ⇒ c = 2 - 6 = - 4

y = $\frac{2}{3}$ x - 4 ← equation of parallel line

-------------------------------------------------------------------

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{2}{3} }$ = - $\frac{3}{2}$ , then

y = - $\frac{3}{2}$ x + c ← is the partial equation

To find c substitute (9, 2) into the partial equation

2 = - $\frac{27}{2}$ + c ⇒ c = 2 + $\frac{27}{2}$ = $\frac{31}{2}$

y = - $\frac{3}{2}$ x + $\frac{31}{2}$ ← equation of perpendicular line

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3 years ago

What would be the second step in solving the equation y−16=3y?

stiv31 [10]

Answer:

Divide both sides by 4

Step-by-step explanation:

Please give brainliest

3 0

3 years ago

Read 2 more answers

Expand and simplify (x-3)(x+5)

Tom [10]

Answer: x² + 2x - 15

Step-by-step explanation:

Concept:

When we encounter questions that ask us to simplify expressions that consist of multiple parentheses, it is suggested to use the FOIL method to ease the process.

First
Outer
Inner
Last

Solve:

Given

(x - 3) (x + 5)

Expand parentheses

x² + 5x - 3x - 15

Combine like terms

x² + (5x - 3x) - 15

x² + 2x - 15

Hope this helps!! :)

Please let me know if you have any questions

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3 years ago