3 years ago

Simplify 3/4(3x+6)-1/4(5x-24)

Mathematics

1 answer:

Dahasolnce [82]3 years ago

6 0

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Combine like terms
x+21/2

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Please someone help me please!I'm struggling and I'll give extra point's!

alukav5142 [94]

Answer:

The x variable has an exponent of 2

Step-by-step explanation:

To be a linear equation, the highest power must be 1 on the variables

2x^2 +y =7 is quadratic since x^2 has a power of 2

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2 years ago

Which shows the correct way to use the rule ""multiply by the reciprocal"" for the expression below? 7 divided by StartFraction

guajiro [1.7K]

Given:

The expression is $\dfrac{7}{\frac{5}{8}}$ .

To find:

The shows the correct way to use the rule ""multiply by the reciprocal"" for the given expression.

Solution:

According to the rule "multiply by the reciprocal", if a,b,c,d are four number, then

$\dfrac{\dfrac{a}{b}}{\dfrac{c}{d}}=\dfrac{a}{b}\times \dfrac{d}{c}$

We have,

$\dfrac{7}{\frac{5}{8}}$

It can be written as

$\dfrac{7}{\frac{5}{8}}=\dfrac{\dfrac{7}{1}}{\dfrac{5}{8}}$

Using the rule "multiply by the reciprocal", we get

$\dfrac{\dfrac{7}{1}}{\dfrac{5}{8}}=\dfrac{7}{1}\times \dfrac{8}{5}$

$\dfrac{\dfrac{7}{1}}{\dfrac{5}{8}}=\dfrac{7\times 8}{1\times 5}$

$\dfrac{\dfrac{7}{1}}{\dfrac{5}{8}}=\dfrac{56}{5}$

Therefore, the correct option is D.

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3 years ago

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The math class has a set of 40 calculators, and 85% of the calculators have working batteries. How many calculators need new bat

777dan777 [17]

Answer:

Step-by-step explanation:

you will multiply 40 times .85 since the percent you move the period two times to the left you will get an answer of 34.

you will then subtract 34 out of the 40 and you will get the answer 6.

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2 years ago

tammy is 14 years old. she has a younger sister and an older brother. her sister is 12. the mean of all their ages is 14. how ol

mafiozo [28]

Answer:

Step-by-step explanation:

To solve, we can use an equation finding the average of the siblings'ages.

$\frac{14 + 12 + x}{3} = 14 \\ \ 14 + 12 + x = 42 \\ x = 42 - 14 - 12 \\ x = 16$

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3 years ago

4) Shown below is a series of steps to solve the equation 4x + 2(x - 4) = 28.

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It is a! I did this assignment and got it right that’s how I know!

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1 year ago