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4 years ago

What is 7% tax on a $9.79 purchase

Mathematics

2 answers:

irga5000 [103]4 years ago

6 0

All u do is put 9.79 multiplied by .07 and it gives you 0.6853 so its .68 or .69 cents if u round

Aneli [31]4 years ago

4 0

all you do is to put 9.79 multiplied by .07 and it gives you 0.6853 so its .68 or .69 cents if u round the decimal

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Which of the following is equivalent to the equation 4x+7y=z?

shtirl [24]

Answer:

x = 1.75y + 0.25z

Step-by-step explanation:

Simplifying

4x + -7y = z

Solving

4x + -7y = z

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7y' to each side of the equation.

4x + -7y + 7y = 7y + z

Combine like terms: -7y + 7y = 0

4x + 0 = 7y + z

4x = 7y + z

Divide each side by '4'.

x = 1.75y + 0.25z

Simplifying

x = 1.75y + 0.25z

5 0

4 years ago

Read 2 more answers

A car salesman had $65,100 in sales. He earned $1,953 in commission. What percent commission did he earn. Explain your answer.

ahrayia [7]

Answer:

1. The percent commission earned is 3%.

2. The loan period is 3.29 years.

Step-by-step explanation:

1. Salesman has $65,100 in sales. He earned $1,953 in commission.

Let the percent commission earn be x%

Therefore, x% of the sales equals $1,953

$\frac{x}{100} of $65,100 = $1,953$

$\frac{x}{100} * 65100 = 1953\\\frac{65100x}{100} = 1953$

We cross multiply

$\frac{65100x}{100} = 1953\\65100x = 1953 * 100\\65100x = 195300$

Divide both side by the coefficient of 'x' (65100)

$\frac{65100x}{65100} = \frac{195300}{65100} \\x = 3$

Therefore, the percent commission earned is 3%

2. Interest (I) = $299 Principal (P) = $1300 Rate (R) = 7%

The formula for finding interest is given as: $I = \frac{PRT}{100}$

Therefore, substituting into the formula, we have:

$299 = \frac{1300 * 7 * T}{100}$

We are finding the time it takes the loan to earn an interest of $299

$299 = \frac{1300 * 7 * T}{100} \\299 = \frac{9100T}{100}$

We cross-multiply:

$299 * 100 = 9100T\\29900 = 9100T$

Divide both side by the coefficient of T (9100)

$\frac{29900}{9100} = \frac{9100T}{9100}\\T = 3.29$

Therefore, the time taken for the loan to earn such interest is approximately 3.29 years

4 0

4 years ago

ABC ~ DEF<br> What is the value for x, the length of side BC?

Stella [2.4K]

Answer:

17.5

Step-by-step explanation:

as the triangles are similar, when oriented in the same direction they have the same angles, and the lengths of all sides of DEF are the lengths of the sides of ABC but multiplied by the same scaling factor f for all sides.

so, we see that

A ~ D

B ~ E

C ~ F

and therefore

AB ~ DE

BC ~ EF

CA ~ FD

that means

DE = AB × f

EF = BC × f

FD = CA × f

we know DE and AB.

so,

4 = 10 × f

f = 4/10 = 2/5

and now we know

EF = 7 = BC × f

BC = 7/f = (7/1) / (2/5) = (5×7)/(2×1) = 35/2 = 17.5

7 0

3 years ago

Dada a função do 1 grau + (x) = 1 - 5,o valor de f (0)

Serga [27]

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7 0

3 years ago

Fill in the other coordinate 2x-5y=11 (2,_)

Vlad [161]

The 2 is in the x place.
Let's substitute 2 for x in our equation.

2(2)-5y=11

Now, we can solve for y. (the other coordinate)

4-5y=11

Subtract 4 from each side.

-5y=7

Divide by -5.

y = -7/5 or -1 2/5 or -1.4

8 0

4 years ago