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beks73 [17]
3 years ago
10

30 is 3/8% of what number?

Mathematics
1 answer:
LenaWriter [7]3 years ago
7 0

Answer:

8000

Step-by-step explanation:

Let the required number be x.

\therefore \:  \frac{3}{8}  \% \: of \: x = 30 \\  \\  \therefore \:   \frac{3}{800}  \times x = 30 \\  \\  \therefore \:  x = 30 \times  \frac{800}{3}  \\  \\  \therefore \:  x = 10 \times 800 \\  \\  \therefore \:  x = 8000 \\

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I need help I tried to do this question with one C and with two C
OverLord2011 [107]

There are two c's. You must pay attention to capitalization, there's a lowercase c and an uppercase C which represent two different variables. Also, the W is capitalized which could make your answer incorrect if you don't use the same notation.

Solving for small c..

C = \frac{Wtc}{1,000}   \\\\ 1,000C = Wtc \\\\\frac{1,000C}{Wt}= c

So it's the answer shown in the picture, but it  should be a capital W instead of a lowercase w.  






3 0
3 years ago
Write the number 68,127,000,000,000,000 in scientific notation.
jolli1 [7]

The answer to this question is 6.8 x 10^16.

8 0
2 years ago
Read 2 more answers
If x/2+ 7 = 4<br> , what is the value of 5x - 7?
horrorfan [7]

Answer:

-37

Step-by-step explanation:

for the first equation to equal 4 the x must equal -6.

because something plus 7 had to equal 4. and we know that -3 + 7 equals 4. Now, -6 ÷ 2 equals -3 and that gives us the right answer.

So now plug -6 into the new problem so now it is

5 × (-6) - 7 so according the PEMDAS, we do 5 × -6 first which is -30. and -30 - 7 equals -37!!

hope this helps :)

5 0
2 years ago
Two ways to write a algebraic expression of n-5
deff fn [24]
-5 + n is another way to write the expression. 
5 0
3 years ago
Read 2 more answers
PLs help
Pavel [41]

A) The hypotenuse is the longest side of the triangle .In the figure EG is the hypotenuse.The given angle is <G=40 degrees.The side adjacent is FG= 10 units.

The question is asking us to find the trigonometry ratio which will  help us find EG.We can use cos  as cos is ratio of adjacent and hypotenuse.

cos 40=\frac{10}{Hypotenuse EG.}

B) Cos  40 =0.766.

Substituting tan40 value we have:

0.766=\frac{10}{EG}

EG=13.05.

C)Sum of angles in  triangle is 180.

<E+<F+<G=180

<E+90+40=180

<E+130=180

<E=50 degrees.

D) Tan  40=\frac{EF}{10}

EF=8.39

E) Area of triangle EFG= \frac{1}{2}x base x height.

A rea of the triangle = \frac{1}{2}x8.39x13.05

Area= 54.75 square units.





5 0
3 years ago
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