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fiasKO [112]
3 years ago
14

If a = -2, b = -6, c = -4, and d = -3, evaluate the following expressions.

Mathematics
1 answer:
abruzzese [7]3 years ago
6 0
It’s Has to be B because if you had the negative numbers you get -12
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What are the solutions to the following system?
RoseWind [281]
\bf \begin{cases}
-2x^2+y=-5\\
\boxed{y}=-3x^2+5\\
----------\\
-2x^2+\left( \boxed{-3x^2+5} \right)=-5
\end{cases}
\\\\\\
-5x^2+5=-5\implies -5(x^2-1)=-5\implies x^2-1=\cfrac{-5}{-5}
\\\\\\
x^2-1=1\implies x^2=2\implies x=\pm\sqrt{2}

and since we know what "x" is, then let's substitute it on say the 1st equation

\bf -2x^2+y=-5\implies -2\left( \pm \sqrt{2} \right)^2+y=-5\implies -4+y=-5
\\\\\\
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\left( \sqrt{2}~,~-1 \right)\qquad \left( -\sqrt{2}~,~-1 \right)
7 0
3 years ago
Read 2 more answers
Help<br> ===================
Lorico [155]

Answer:

A = 1725 ft^2

Step-by-step explanation:

A = <u>a + b</u>  * h

        2

A = area

a = top

b = base

h = height

A = <u>a + b</u>  * h

        2

A = <u>65 + 50</u>  * 30

           2

A = 57.5 * 30

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4 0
2 years ago
What is the value of -(-9)?<br> Explain your reasoning.
Ymorist [56]

Answer:

-(-9) is 9

Step-by-step explanation:

-(-9)

(when there are two negatives multiplyed with eachother, the product will be postive)

+ 9

+ 9  = 9

8 0
3 years ago
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galben [10]

Answer:

24 servngs

Step-by-step explanation:

3 cups makes 9 servings.

The rate of servings to cups is 9 servings to 3 cups which is a unit rate of 3 servings per cup.

1 quart = 4 cups

2 quarts = 2 * 4 quarts = 8 cups

3 serviongs/cup * 8 cups = 24 servings

Answer: 24 servings

3 0
2 years ago
When dividing 878 by 31, a student finds a quotient of 28 with a remainder of 11. Check the students work, and use the check to
Liula [17]
878/3 is 28 with a remainder of 10! The error is when they subtracted 258-248 wrong
3 0
3 years ago
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