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maks197457 [2]
2 years ago
15

Please help me im in a rush

Mathematics
1 answer:
Trava [24]2 years ago
3 0

Answer:

\frac{x}{y}  =  \frac{10}{5}   \\  =  \frac{5}{1}

1. •°• y is 5 times x

\frac{x}{y}  =  \frac{30}{5}  \\  =  \frac{6}{1}

2. •°• y is 6 times x

\frac{x}{y}  =  \frac{56}{8}  \\  =  \frac{7}{1}

3. •°• y is 7 times x

\frac{x}{y}  =  \frac{88}{11}  \\  =  \frac{8}{1}

4. •°• y is 8 times x

2 \times \frac{7}{4}

•°• y is 2 times x

5 \times \frac{7}{4}

•°• y is 5 times x

8 \times \frac{7}{4}

•°• y is 8 times x

11 \times \frac{7}{4}

•°• y is 11 times x

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adell [148]
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4 0
3 years ago
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What is the solution set of |–x| = –10?
dem82 [27]
|a| = b gives
a =b or a = -b

so,
|-x| = -10
gives
-x = -10 or -x = 10
x = 10, -10

now let us verify,
when x = 10, |-10| = +10 and it is not = -10
so, x= 10 is NOT a solution.

when x = -10, |-(-10)| = |10| = 10 and it is not = -10
so, x= -10 is NOT a solution.

hence, this equation does not have a solution.

If we know that |...| can never be negative, we can directly deduce that this equation does not have any solution.
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3 years ago
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cynthia invests some money in a bank which pays 5% compound interest per year. She wants it to be worth over £8000 at the end of
exis [7]

Answer:

The smallest amount is \£6,911

Step-by-step explanation:

we know that    

The compound interest formula is equal to  

A=P(1+\frac{r}{n})^{nt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

n is the number of times interest is compounded per year

in this problem we have  

t=3\ years\\ A=\£8,000\\ r=5\%=5/100=0.05\\n=1  

substitute in the formula above

8,000=P(1+\frac{0.05}{1})^{1*3}  

solve for P

8,000=P(1.05)^{3}  

P=8,000/(1.05)^{3}  

P=\£6,910.70  

Round to the nearest pound she can invest

The smallest amount is \£6,911

6 0
3 years ago
What is the degree of the polynomial 17x + 4.<br> Just write the answer like 1 or 2 etc.
fomenos
<h3>Answer:  1</h3>

Explanation:

The original expression is the same as 17x^1 + 4 since x^1 = x

The degree of any polynomial is always the largest exponent. This applies to single variable polynomials only.

Therefore, the degree of 17x^1 + 4 is 1. This is a linear polynomial, and it's also a binomial since it has 2 terms 17x and 4.

6 0
3 years ago
You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. The ball has kinetic energy. Calcu
motikmotik

Answer:

900 j

Step-by-step explanation:

KE=1/2mv^2

so:

1/2x(2kg)x(30m/s)^2

is 900 joules. :)

6 0
3 years ago
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