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scoundrel [369]
3 years ago
8

If 7x 2a = 3x 5a, what is x equivalent to?

Mathematics
1 answer:
stepladder [879]3 years ago
6 0
X is equivalent to -4
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Question is in the picture
Thepotemich [5.8K]

Answer:

$9.00

Step-by-step explanation:

If the price is at 30% discount, this means it is 100-30 = 70% of the original price.

70 \%  \ of \ original \ price = \$ 6.30\\\\\ original \ price = 6.30 \div 70 \%\\\\= 6.30 \times \frac{100}{70}\\\\=\frac{630}{70}\\\\= 9

Hence, original price is $9.00.

3 0
3 years ago
Rewrite the expression without using grouping symbols 11(23-x)
Triss [41]
<span>11(23-x)
= 11(23) - 11x
= 253 - 11x</span>
7 0
3 years ago
An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on
butalik [34]

Answer:

90 engines must be made to minimize the unit cost.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

f(x) = ax^{2} + bx + c

It's vertex is the point (x_{v}, y_{v})

In which

x_{v} = -\frac{b}{2a}

y_{v} = -\frac{\Delta}{4a}

Where

\Delta = b^2-4ac

If a>0, the minimum value of the function will happen for x = x_v

C(x)=x²-180x+20,482

This means that a = 1, b = -180, c = 20482

How many engines must be made to minimize the unit cost?

x value of the vertex. So

x_{v} = -\frac{b}{2a} = -\frac{-180}{2(1)} = 90

90 engines must be made to minimize the unit cost.

3 0
3 years ago
PLEASE HELP I NEED TO PASS MATH!
fgiga [73]

Answer:

a translation moves a thing up and down or left and right.

Step-by-step explanation:

so true?

6 0
2 years ago
Read 2 more answers
write an expression that uses partial products to multiply 8 x 64. Can your expression be written another way? Explain
RUDIKE [14]

we are asked to write an expression that uses partial products to multiply 8 and 64. In this case, we can break 8 into 2 x4 and 64 into 8x8. In this case, multiplying these factors equal to 512. Any factors will do actually since it will yield the same product.

8 0
3 years ago
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