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sweet-ann [11.9K]
2 years ago
15

If x = 3, calculate the value of : x cubed + x

Mathematics
1 answer:
azamat2 years ago
4 0
Isn't X cubed 3 to exponent 3 there for being X=27 and then plus 3 because they said X=3 so then its 27+3 so there for X=30 
 
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The simplest fraction form of 0.0115 is
qaws [65]
0.0115 =  115 / 10000

= 115/10000      5 into 115 is 23, 5 into 10000 is 2000

= 23 / 2000    in its simplest form.

7 0
2 years ago
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How much did you invest if you earned $131.60 in interest at a rate of 4% for seven years?
Ket [755]

The amount invested is $ 470

<h3><u>Solution:</u></h3>

Given that ,  we have earned $131.60 as simple interest for an amount deposit at the rate of 4% for seven years.

We have to find the amount invested.  That is, we need to find the principal sum

Let us use the simple interest formula

<em><u>The simple interest is given as:</u></em>

\text { Simple interest }=\frac{p r i n c i p a l \times \text {rate of interest } \times \text {number of years}}{100}

Here, simple interest = $ 131.60

Rate of interest = 4 %

Number of years = 7

principal = ?

Substituting the values in formula, we get

\begin{array}{l}{131.6=\frac{\text { principal } \times 4 \times 7}{100}} \\\\ {131.6 \times 100=\text { principal } \times 4 \times 7} \\\\ {13160=\text {principal } \times 28} \\\\ {\text {Principal }=470}\end{array}

Thus the amount invested is $ 470

4 0
3 years ago
How many vertices are in a polyhedron with 6 triangular faces?
Bingel [31]
I believe it will be 36 Im sorry if im wrong.
6 0
3 years ago
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8x-5y=15 <br>6x+4y=43<br>solve the system by any method​
Sedbober [7]

Answer:

x=\frac{275}{62} , y=\frac{127}{31}

Step-by-step explanation:

<h3>I will use the elimination method.</h3>

We want to make the X's the same:

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Because the signs of the X's are the same we subtract the 2 equations to make:

(I put the second one on top of the 1st)

31y=127

So:

y=\frac{127}{31}

Substitute y into either equation 1 or 2:

(I chose equation 1)

8x-5(\frac{127}{31})=15

8x=5(\frac{127}{31}) + 15

x=\frac{5(\frac{127}{31})}{8}

So:

x=\frac{275}{62}

5 0
2 years ago
What is the value of the expression <br> 7⋅(−5)⋅4?
Masja [62]
Multiply each number. Remember that when multiplying a negative and positive number, the outcome will be negative

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hope this helps
4 0
3 years ago
Read 2 more answers
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