2 years ago

Question Help

Mathematics

1 answer:

White raven [17]2 years ago

6 0

Answer:

Marsha would make 5280 in intrest over two years.

Not sure how you can substiture the values into the equation

Step-by-step explanation:

explanation

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In 1999 bus fare in atlanta was 4.70.In 1979 the fare was 2/5 of the fare in 1999 what was the fare in 1979

Gennadij [26K]

Answer : 1.96 was the fare in 1979.

Explanation :

Bus fare in Atlanta in 1999 =4.70

$\text{As we have given that in 1979 the fare was } \frac{2}{5} \text{ of the fare in 1999.}$

$\text{Bus fare in Atlanta in 1979=} \frac{2}{5}\times 4.70$

Bus fare in Atlanta in 1979 is given by

$\frac{2\times 4.70}{5}\\\\=\frac{9.80}{5}\\\\=1.96$

∴ 1.96 was the fare in 1979.

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2 years ago

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What is the average of -2.5, 5.2, 1.7, and -0.8?

Leokris [45]

The average of these numbers is nine tenths, $\frac{9}{10}$ , or .9, however you would like to put it.

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2 years ago

Would (1,1), (2,3), (3,6), (4,10) be a linear relationship

seropon [69]

Answer:

Yes

Step-by-step explanation:

The slope is 1/2

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2 years ago

To simplify (5 + 2)^2 + 7 ÷ 7

Sedbober [7]

Parentheses (brackets/braces) are done first according to the order of operations.
Answer A

7 0

3 years ago

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2. Suppose (220)_b and (251)_b are the squares of consecutive integers. Determine b.

Andrei [34K]

Let $x$ and $x+1$ be these consecutive integers. For some base $b$ , we can write

$(x_{10})^2=220_b=2b^2+2b$

$((x+1)_{10})^2=251_b=2b^2+5b+1$

$x^2=2b^2+2b$

then

$x^2+1=2b^2+2b+1$

Now,

$x^2+2x+1=2b^2+5b+1$

$2x+2b^2+2b+1=2b^2+5b+1$

$\implies2x=3b$

Squaring both sides gives

$4x^2=9b^2$

and so

$4(2b^2+2b)=9b^2$

$\implies8b^2+8b=9b^2$

$\implies b^2-8b=0\implies\boxed{b=8}$

(because the base has to be non-zero)

3 0

3 years ago