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vova2212 [387]
3 years ago
8

A jewellery shop is having a sale.

Mathematics
1 answer:
elena-s [515]3 years ago
3 0

Step-by-step explanation:

if 70% of the orice is 420 then

70x = 100 × 420

70x = 42000

x = 42000/70

x = 600

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There are x number of students at helms. If the number of students increases by 7.8% each year, how many students will be there
vodomira [7]

There will be 1.078x students next year and equation is number of students in next year = x + 7.8% of x

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

Given, There are "x" number of students at helms.  

The number of students increases by 7.8% each year which means if there "x" number of students in present year, then the number of students in next year will be x + 7.8% of x

Number of students in next year = number of students in present year + increased number of students.

\begin{array}{l}{\text { Number of students in next year }=x+7.8 \% \text { of } x} \\\\ {\text { Number of students in next year }=x\left(1+\frac{7.8}{100}\right)} \\\\ {\text { Number of students in next year }=x(1+0.078)=1.078 x}\end{array}

Thus there will be 1.078x students in next year

3 0
3 years ago
two sides of a triangle are equal in length. the length of the third side is three more than the length of the equal sides. the
cluponka [151]

Answer:

each side is 31cm

Step-by-step explanation:

91/3=31

31+31+31=93

4 0
2 years ago
What is the total purchase price of a $13.65 shirt if the sales tax rate is 6.2%?
posledela

Answer:

14.49

Step-by-step explanation:

8 0
2 years ago
Use the Remainder Theorem to find the remainder: (16x^4 – 8x^3 – 4x + 1) ÷ (2x + 1)
vodka [1.7K]

Answer:

5

Step-by-step explanation:

This illustrates the Remainder Theorem. If a polynomial f(x) is divided by x−a , the remainder is the constant f(a) , and f(x)=q(x)⋅(x−a)+f(a) , where q(x) is a polynomial with degree one less than the degree of f(x) . Synthetic division is a simpler process for dividing a polynomial by a binomial.

3 0
3 years ago
In care cadrane se afla graficul functiei ; f:(x)=121x
iragen [17]
<span>Solución X = {0, 121}
</span><span>espero que esto ayude</span>
8 0
2 years ago
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