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Anna71 [15]
3 years ago
12

The price of a Graphing calculator is $80 the sales tax is 7%. What is the cost of the calculator

Mathematics
1 answer:
Elis [28]3 years ago
4 0

Answer:

$85.60

Step-by-step explanation:

In this question, we need to find the price of the calculator after tax.

We know the cost of the calculator is $80 and the sales tax is 7%

To find your answer, we would multiply 80 by 1.07:

80 · 1.07 = 85.60

The total cost of the calculator is $85.60

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What is --- <br> 8x + 2y = 30<br> 7x + 2y = 24
kolezko [41]

Answer:

x = 6 y = -9

Step-by-step explanation:

8x +2y = 30

-7x + 2y =24

x= 6

8(6)

48 + 2y =30

-48. -48

2y = -18

÷2. ÷2

y = -9

5 0
3 years ago
1.49 convert decimal to a fraction
astra-53 [7]
Write the decimal number as a fraction ( over 1 ) 1.49=1.49/1
Multiplying by 1 to eliminate 2 decimal places we multiply top and bottom by 2 10s
Numerator ( N)
N= 1.49*10*10=149
Denominator(D)
D+ 1*10*10=100
N / D =149/100
Simplifying the fraction:
149/100
149/100
1 49/100 ( Final Answer )
7 0
3 years ago
Write the quadratic equation whose roots are 4 and 5, and whose leading coefficient is 4.
Umnica [9.8K]

Answer:

<u>Answer</u><u>:</u><u> </u><u>4</u><u>x</u><u>²</u><u> </u><u>-</u><u> </u><u>9</u><u>x</u><u> </u><u>+</u><u> </u><u>2</u><u>0</u><u> </u>

Step-by-step explanation:

• General quadratic equation:

{ \rm{ {x}^{2}  - (sum \: of \: roots)x + (product \: of \: roots) }}

• sum of roots → 4 + 5 = 9

• product of roots → 4 × 5 = 20

• substitute:

{ \boxed{ \rm{4 {x}^{2}  - 9x + 20 }}}

3 0
3 years ago
NEED ANSWER ASAP WILL MARK BRAINLIEST!!!!!
olganol [36]
It is a negative 2 so the answer is (7,-2)
3 0
3 years ago
Read 2 more answers
What equasion is equivilent to 7(x+4)? PLZZZZZZ
Llana [10]

Step 1.)

7x + 7 * 4.

We need to expand this term by multiplying a term and an expression.

The following product distributive property will be used:

A(B+C) = AB + AC

Numerical factors in this term have been multiplied.

In our example, the resulting expression will consist of 2 terms:

   the first term is a product of 7 and x

   the second term is a product of 7 and 4.

7x + (7 * 4)

Numerical factors in this term have been multiplied.

Which equals:

7x + 28

Hope you understand this and it helps. Have a great evening!

8 0
3 years ago
Read 2 more answers
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