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Sergio [31]
4 years ago
11

I need help with this one please help

Mathematics
1 answer:
OLga [1]4 years ago
8 0
A) HD Headphones. x=110 x=$70 ea
110×70=$7,700 for HD Headphones
10,000-7,700=2,300 left
y×w=2,300 for basic headphones
My guess, 230 basic headphones for $10 each

b) Basic headphones y×w
55×20=$1,100
2,000-1,100=900
HD Headphones
x×z=900
x=10,z=90 10×90=900
(I'm assuming that the price per item is higher due to the smaller quantity.
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GEOMETRY HELP PLEASE!6
UkoKoshka [18]
You can go on there website and get there answers on there. Search up delta math answer key, it will lead you that there cite and click on which lesson your in then skip questions until you find the one your at
6 0
3 years ago
Money in a bank triples every 10 years. If $100 is deposited today, what will its value be after 40 years? PLEASE SHOW ME STEP B
LenKa [72]

Answer:

d) $8,100

Step-by-step explanation:

Given information:

  • Money triples every 10 years
  • Initial deposit = $100
  • Number of years invested = 40 years

If the money triples (multiplies by 3) every 10 years,
then in 40 years time it will triple <u>4 times</u>, as 40 ÷ 10 = 4

⇒ Account balance after 40 years = $100 × 3 × 3 × 3 × 3

                                                         = $100 × 3⁴

                                                         = $8,100

<u>Proof</u>

In 10 years time the balance of the account will be:

$100 x 3 = $300

In another 10 years time, the balance of the account will be:

$300 x 3 = $900

In another 10 years time, the balance of the account will be:

$900 x 3 = $2700

In another 10 years time, the balance of the account will be:

$2700 x 3 = $8100

7 0
2 years ago
Solve for e. 9e^2f=49<br> e=±√7f/3<br> e=±7√f/3<br> e=±7√f/3f<br> e=±√7f/3f
Vesnalui [34]
Divide by the coefficient of e^2, then take the square root.
  e^2 = 49/(9f)
  e = ±7/(3√f) = ±(7√f)/(3f)

The 3rd selection is appropriate:
  e=±(7√f)/(3f)


______
When written in plain text (not typeset), any denominator containing arithmetic must be enclosed in parentheses. When the expression is typeset, the surd and the division bar do the grouping for you.
  e=\pm \dfrac{7\sqrt{f}}{3f}
7 0
4 years ago
Read 2 more answers
Which line is parallel to a line that has a slope of 3 and a y-intercept at (0, 0)?
saul85 [17]

Answer:

HJ

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are the same

so

The slope of the line that is parallel to a line that has a slope of 3 is equal to 3

Verify the slope of the blue and red line , because their slopes are positive

<em>Blue line</em>

we have

C(-3,0),D(3,2)

The slope m is equal to

m=(2-0)/(3+3)

m=2/6

m=1/3

<em>Red line</em>

we have

H(-1,-4),J(1,2)

The slope m is equal to

m=(2+4)/(1+1)

m=6/2

m=3

therefore

The answer is the red line HJ

4 0
3 years ago
9/2 - 23/9=? plss help ​
Galina-37 [17]

Answer:

35/ 18

(Decimal: 1.944444)

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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