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3 years ago

Help pls1ssssssssssssssssssssssssssssssssss

Mathematics

1 answer:

Ad libitum [116K]3 years ago

7 0

Answer:

200

Step-by-step explanation:

I did it in a different way I think but this is how I did it. ._.

100÷2=50

50×4=200

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Help please help me with this.

boyakko [2]

$\pi r^2h$

$\pi \times 7^2 \times 7$

$\pi \times 7^3$

$\displaystyle 343\pi$

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3 years ago

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Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made. −5x − 25 = 78 Step 1

7nadin3 [17]

Answer:

she should have added 25, not subtracted 25

Step-by-step explanation:

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4 years ago

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If a>1, then the graph of f(x)=a^x ____(rises/falls) from left to right.

pav-90 [236]

Answer:

rises

Step-by-step explanation:

Since we are talking about exponential functions,

$for,\ f(x) = a^x,\ \ \ \ \ \ when, a > 1\\\\ \lim_{x \to \infty} f(x) = \infty$

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4 years ago

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REY [17]

The exponential functions change is represented by decay and the percentage rate of decrease is 1.00619%.

Step-by-step explanation:

Step 1:

To determine if the function represents growth or decay, we substitute values to x.

If the values increase with an increase of x, it represents growth.

If the values decrease with an increase of x, it represents decay.

Step 2:

If $x= 10,$ $y = 1,300 (\frac{1}{2})^{\frac{10}{69} } = 1,300 (0.9044) = 1,175.72.$

If $x=11,$ $y = 1,300 (\frac{1}{2})^{\frac{11}{69} } = 1,300 (0.8953) = 1,163.89.$

So as x increases the value of y decreases, so it represents decay.

Step 3:

The percentage rate of change is determined by dividing the difference of two consecutive values by the first value.

The percentage rate of change $= \frac{y(x=11) - y(x=10)}{y(x=10)}.$

Substituting the values, we get

The percentage rate of change $=\frac{1,175.72-1,163.89}{1,175.72}(100) = 1.00619\%$ .

As the values of y decrease with an increase in x, it is the percent decrease per unit.

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4 years ago

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How can you tell if a number can be divided by 10?

Lisa [10]

Answer:

if a number end's with zero then it is divisible by zero.

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3 years ago