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Andreyy89
3 years ago
15

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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$1.65

Step-by-step explanation:

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1
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41 miles per gallon

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3 0
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

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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
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