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3 years ago

If x = -3, calculate the value of: 2xsquared + x

Mathematics

2 answers:

Archy [21]3 years ago

6 0

2 x - 3² + - 3
2 x 9 + - 3
18 - 3
15

Debora [2.8K]3 years ago

4 0

Insert the value of x into the equation
2 (-3^2)+(-3)
2 (9)-3
18-3=15

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Three bananas cost $.99 at this rate how much do five bananas cost

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Answer:

$1.65

Step-by-step explanation:

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3 years ago

nadya68 [22]

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2 years ago

Marcia sells bracelets. She sells each one for $1.50. This year she spent $32.76 on supplies. At the end of the year, she made $

Marianna [84]

Answer:

$1.5b - $32.76 = $292.74

Step-by-step explanation:

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3 0

3 years ago

Multiply the polynomials.<br> (4x- + 4x + 6)(7x + 5)

SashulF [63]

$\implies {\blue {\boxed {\boxed {\purple {\sf { \: 28 {x}^{3} + 48 {x}^{2} + 62x + 30}}}}}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

$(4 {x}^{2} + 4x + 6)(7x + 5)$

$= \: 7x(4 {x}^{2} + 4x + 6) + 5(4 {x}^{2} + 4x + 6)$

$= \: 28 {x}^{3} + 28 {x}^{2} + 42x + 20 {x}^{2} + 20x + 30$

Combining like terms, we have

$= \: 28 {x}^{3} + (28 {x}^{2} + 20 {x}^{2} ) + (42x + 20x) + 30$

$= \: 28 {x}^{3} + 48 {x}^{2} + 62x + 30$

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}$

3 0

3 years ago

3. One weekend, 152 peopleattended an art exhibit. Thefollowing weekend, 298 peopleattended. To the nearest percent,what was the

castortr0y [4]

We can calculate the percent change dividing the change by the original amount of people attending the exhibit.

The increase is 298-152 = 146.

Then, we can calculate the percent change as:

$\frac{298-152}{152}=\frac{146}{152}=0.9605=96\%$

There was a 96% increase in the number of people attending the exhibit.

7 0

1 year ago