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3 years ago

7

a car traveled 36 miles in 45 minutes. the car traveled at a constant speed. it the car continues to travel at this rate which e

quation can be used to determine y the total number of miles the car will travel in hours?

1 answer:

Alchen [17]3 years ago

8 0

Y = 48 becuase you travelled the amount of minuets 45 x

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together Charlotte and vinny have 20 marbles. charlotte has 4 times as many as vinny. how many marbles does Charlotte have.

nadya68 [22]

Answer:

5

Step-by-step explanation:

20 divided by 4 is 5

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2 years ago

The expression 4x(2x+7)-5(3x-2) simplifies to

Burka [1]

So step one is to distribute the 4x through and the -5 through. After distributing you get 8x^{2}+28x-15x+10. Combine the like terms, 28x and -15x, to get 13x. Your answer is 8x^{2}+13x+10

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2 years ago

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

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3 years ago

Goran rented a truck for one day. There was a base fee of $17.99 , and there was an additional charge of 75 cents for each mile

Vikki [24]

Cost of the total miles travelled
= $191.24 - $17.99
= $173.25

Miles travelled
= $173.25 ÷ 0.75
= 129.9375 miles
≈ 130 miles (3s.f)

8 0

3 years ago

What equations are equivalent to1/4(8x+56)=20

liq [111]

Answer:

Step-by-step explanation:

7 0

1 year ago