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dsp73
2 years ago
10

Finding a Percent of a Number

Mathematics
2 answers:
Alekssandra [29.7K]2 years ago
5 0

Answer:

1) 1.99

2) 1.4

Step-by-step explanation:

Greeley [361]2 years ago
4 0

Answer:

22.84

Step-by-step explanation:

El impuesto se calcula por 0.075 * 21.25 = 1.59375 o $ 1.59. Entonces, la factura total es el costo de los artículos comprados más impuestos, que es de $ 21.25 + $ 1.59 = $ 22.84.

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5k-7=-7<br> solve the equation to what is k
LenKa [72]
So 5k-7=-7
You need to do the opposite of addition,which is subtraction so...
5k-7=-7
+7
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K=0
and to double check it,replace the (or variable) with our answer (0)...
so
5×0-7=-7
solve the problem...and
-7=-7√
5 0
3 years ago
Read 2 more answers
Identify the values that should be written to complete the X diagram.
cestrela7 [59]

Answer:

See the attachment for what goes on your X diagram.

Rewrite: x² -7x +4x -28

Grouping: (x² -7x) +(4x -28) = x(x -7) +4(x -7) = (x +4)(x -7)

Step-by-step explanation:

The given quadratic is ...

... x² -3x -28 . . . . . a=1, b=-3, c=-28

a) The value at the top of the X diagram is the product a·c = 1·(-28) = -28.

The value at the bottom of the X diagram is the coefficient b = -3.

The values on the sides of the diagram are the factors of -28 that add up to make -3. These are -7 and 4. That is, ...

(-7)·(4) = -28

(-7)+(4) = -3

b) Since the two values on the sides of the diagram add up to give "b", the value of "b" in the equation can be rewritten as the sum of these two numbers. Doing that, we have ...

... x² -3x -28

... = x² +(-7+4)x -28

... = x² -7x +4x -28 . . . . . . order does not matter. It could also be x² +4x -7x -28

c) We can group pairs of terms in the rewritten expression and factor each pair.

... = (x² -7x) +(4x -28) . . . . . first pair has a common factor of x; second pair, 4

... = x(x -7) +4(x -7) . . . . . . . these terms now have a common factor: (x -7)

... = (x +4)(x -7) . . . . . . . . . . the complete factorization of x² -3x -28

3 0
3 years ago
On a map, 1/2 inch represents 10 actual miles. Two towns that are 4 1/2 inches apart on this map are how many actual miles apart
dusya [7]
The answer is E.90

1/2 inches = 10 miles
9(1/2) inches = 4 1/2 inches
9(10) miles = 90 miles
7 0
3 years ago
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Leokris [45]
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3 years ago
How many pints of milk did the students drink?
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We need more information to answer.

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