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3 years ago

Math you can get brainly est

Mathematics

2 answers:

Mademuasel [1]3 years ago

4 0

The fraction is 12/1000 which simplified to 3/250. The percentage is 1.2%.

Bond [772]3 years ago

4 0

Fraction is 12/1000 and the percent is 0.00012

The top person is wrong because he/she moved the decimal to the left but when you find percent, it's suppose to be moved to the right twice.

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Create your own GCF word problem with 3 numbers

svet-max [94.6K]

Number set:
18, 36, 900
GCF:
9

5 0

4 years ago

winston works 40 hours a week as a pharmacist. if he made 75,400 last year, how much was he paid per hour?

True [87]

Answer:

If I'm calculating correctly, it might be $36.15. Or, if you're rounding, $36.2.

Step-by-step explanation:

There are about 52.14 weeks in a year. If you multiply 40 by 52.14 you get 2085.6. Then you divide 75,400 by 2085.6 and that's how I got my answer. If I'm wrong, someone feel free to correct me.

4 0

3 years ago

Read 2 more answers

What is the first term in a geometric sequence if the common ratio is −3 and the sum of the first six terms is 1,274?Hint: cap s

Ber [7]

Answer is -7

=============================================

Work Shown:

s_n = a_1*(1-r^n)/(1-r)

s_6 = a_1*(1-r^6)/(1-r)

s_6 = x*(1-(-3)^6)/(1-(-3))

s_6 = x*(1-729)/(1+3)

s_6 = x*(-728)/4

s_6 = x*(-182)

s_6 = -182x

-182x = s_6

-182x = 1274

x = 1274/(-182)

x = -7 is the first term of the geometric sequence

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

Extra info:

The first six terms of this geometric sequence is

-7, 21, -63, 189, -567, 1701

those six terms add to

-7+21+(-63)+189+(-567)+1701 = 1274

which verifies we have the right answer.

3 0

4 years ago

Barb is making a bead necklace. She strings 1 white bead, then 3 blue beads, then 1 white bead and so on. Write the numbers for

allsm [11]

You do it like this.

The mice are white beads and the gems are blue. It is 3:1 if you need the ratio.

5 0

4 years ago

Which equation has x = -i and x = = 21v3 as two of its solutions?

Drupady [299]

Answer:

The equation in option A is correct.

Step-by-step explanation:

Given the equation

$\:y=x^4+13x^2+12$

Let us find the solution by setting y=0

$x^4+13x^2+12=0\:\:\:\:\:$

$\mathrm{Rewrite\:the\:equation\:with\:}u=x^2\mathrm{\:and\:}u^2=x^4$

$u^2+13u+12=0$

if $ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)$

$u+1=0\quad \mathrm{or}\quad \:u+12=0$

$u=-1,\:u=-12$

$\mathrm{Substitute\:back}\:u=x^2,\:\mathrm{solve\:for}\:x$

$x^2=-1,\:x^2=-12$

solving

$x^2=-1$

$\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}$

$x=\sqrt{-1},\:x=-\sqrt{-1}$

$x=i,\:x=-i$ ∵ $\:\sqrt{-1}=i$

solving

$x^2=-12$

$\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}$

$x=\sqrt{-12},\:x=-\sqrt{-12}$

$x=2\sqrt{3}i,\:x=-2\sqrt{3}i$

Hence, the solutions are:

$x=i,\:x=-i,\:x=2\sqrt{3}i,\:x=-2\sqrt{3}i$

Therefore, the equation in option A is correct.

6 0

3 years ago