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2 years ago

Last week Jovanna ran 30 miles

Mathematics

1 answer:

Nuetrik [128]2 years ago

6 0

Answer: 17 miles

Step-by-step explanation:

47 - 30 = 17

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I JUST NEED A YES OR NO ANSWER IS THIS RIGHT

andrezito [222]

Answer:

no it's not correct it's wrong

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2 years ago

Kelly answered 3 items on a test incorrectly, this was 6% of her test. How many questions were on her test? Plz, help me ASAP...

ExtremeBDS [4]

50 and this is a filler

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3 years ago

Read 2 more answers

Simplify. Your answer should contain only positive exponents with no fractional exponents in the denominator.

mart [117]

Answer:

$\dfrac{x^{\frac{2}{3}}y^{\frac{1}{4}}}{4y^{2}}$ .

Step-by-step explanation:

The given expression is

$\dfrac{3y^{\frac{1}{4}}}{4x^{-\frac{2}{3}}y^{\frac{3}{2}}\cdot 3y^{\frac{1}{2}}}$

We need to simplify the expression such that answer should contain only positive exponents with no fractional exponents in the denominator.

Using properties of exponents, we get

$\dfrac{3}{4\cdot 3}\cdot \dfrac{y^{\frac{1}{4}}}{x^{-\frac{2}{3}}y^{\frac{3}{2}+\frac{1}{2}}}$ $[\because a^ma^n=a^{m+n}]$

$\dfrac{1}{4}\cdot \dfrac{y^{\frac{1}{4}}}{x^{-\frac{2}{3}}y^{2}}$

$\dfrac{1}{4}\cdot \dfrac{x^{\frac{2}{3}}y^{\frac{1}{4}}}{y^{2}}$ $[\because a^{-n}=\dfrac{1}{a^n}]$

$\dfrac{x^{\frac{2}{3}}y^{\frac{1}{4}}}{4y^{2}}$

We can not simplify further because on further simplification we get negative exponents in numerator or fractional exponents in the denominator.

Therefore, the required expression is $\dfrac{x^{\frac{2}{3}}y^{\frac{1}{4}}}{4y^{2}}$ .

5 0

3 years ago

If f(x) = x2 + 1, find f(a + 1).

LenaWriter [7]

You replace x with (a+1)
Then f(a+1) = (a+1)^2+1
= a^2+2a+1+1
= a^2+2a+2

5 0

2 years ago

80% is 50 of what number

Nostrana [21]

Answer:

62.5

Step-by-step explanation:

Let unknown number be represented as X

80/100 ×X=50

80X/100=50 cross multiply

80X=5000 divide both side by 80

X=62.5

The number is 62.5

3 0

2 years ago