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3 years ago

Please help thanks

Mathematics

1 answer:

qwelly [4]3 years ago

4 0

Answer:

x = 7 is your answer.

Step-by-step explanation:

Here is what you do:

x + 16 = 4x - 5

-3x + 16 = -5

-3x = -21

x = 7 is your answer.

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Write the following numbers used in these statements in scientific notation. (Note: Some of these numbers have been rounded.)

lutik1710 [3]

Answer:

So in scientific form 4000 miles will be equal to $4\times 10^3miles$

Step-by-step explanation:

We have given that radius of earth is 4000 miles

4000 miles can be written as 4×1000

We have to written 4000 miles in scientific form

We know that 1000 can be written in scientific form as $1000=10^3$

So $4000miles =4\times 1000=4\times 10^3miles$

So in scientific form 4000 miles will be equal to $4\times 10^3miles$

5 0

3 years ago

Ryan has nine 14 ounce bags of popcorn to repackage and sell at the school fair. a small bag holds 3 ounces. how many small bags

Mice21 [21]

14 divided by 3 you would get 4 2/3 but since all the bags have to have the same amount it should be 4

Hope this helps!

3 0

3 years ago

1. Find the domain and range of the function f(x)=√1-4x².

slamgirl [31]

$f(x) = \sqrt{1 - 4{ x}^{2} }$

$1 - 4x {}^{2} \geqslant 0$

$- \infty \: \: \: \: \: \: \: \: - 0.5 \: \: \: \: \: \: \: \: \: 0.5 \: \: \: \: \: \: \: \: \infty \\ - \: \: \: \: \: \: \: \: \: \: \: \: \: \:0 \: \: \: \: \: + \: \: \: \:0 \: \: \: \: \: -$

$domain \\ [ \: -0.5 \: , \: 0.5 \: ]$

$g(x) = 1 - 4x {}^{2} \\ g'(x) = - 8x \\ g'(x) = 0 \\ x = 0 \\ g(0) = 1 - 4(0) = 1 \\ maximum \: = 1$

$range \\ [ \: 0 \: , \: 1 \: ]$

5 0

2 years ago

Read 2 more answers

Evaluate -5x^2 − 8x + 1 when x = -3.

Yakvenalex [24]

Hello.

Answer: 70

New equation: −5(−3^2)−(8)(−3)+1

How to get the answer:

(−5)(−9)−(8)(−3)+1

=45−(8)(−3)+1

=45−(−24)+1

=69+1

=70

Have a nice day

7 0

3 years ago

Factorise x squared - 4x

mario62 [17]

X^2= (x-2[root of x])(x+2[root of x])

4 0

3 years ago

Read 2 more answers