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ivann1987 [24]
4 years ago
7

Find (−18)+(−25)+13 . −56 −30 20 −6

Mathematics
1 answer:
timama [110]4 years ago
7 0

Answer:

Step-by-step explanation:

-18 + (-25) + 13 =

-18 - 25 + 13 =

-43 + 13 =

-30 <====

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Evaluate when a=-6, b= 5, c= -2:<br> a3 - b + 4c2
Flura [38]

Answer:

-39

Step-by-step explanation:

a=-6 b=5 c=-2

a3-b+4c2

(-6)3-(5)+4(-2)2

8 0
3 years ago
The length of a rectangular prism is three times as long as its width, and its height is two feet longer than its width. If the
aivan3 [116]
A rectangular prism is a polyhedron with six rectangular faces. To fully define a rectangular prism, one must know its length, width and height. The volume of a rectangular prism is expressed as the product of its dimensions - length, width and height. To calculate for its width, we use the volume formula.

V = l x w x h
From the given, we have:
l = 3w
h = 2 + w
V = 135 ft^3

Substituting the given expressions,
135 ft^3 = 3w (w) (2+w)
135 ft^3 = 6w^2 + 3w^3

Solving for w, we obtain the following values:
w1= 3
w2 = 2.5 + 2.96i
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7 0
3 years ago
What is y=4x^2-9x+1 in vertex form
Anna11 [10]

Answer:

y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}

Step-by-step explanation:

y = 4x^2 - 9x + 1

You need to complete the square on the right side.

y = (4x^2 - 9x) + 1

y = 4(x^2 - \dfrac{9}{4}x) + 1

y = 4 \left( x^2 - \dfrac{9}{4}x + \left( \dfrac{9}{8} \right)^2 \right) + 1 - 4\left( \dfrac{9}{8} \right)^2

y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - 4 \left( \dfrac{81}{64} \right)

y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - \dfrac{81}{16}

y = 4 \left(x - \dfrac{9}{8} \right)^2 + \dfrac{16}{16} - \dfrac{81}{16}

y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}

3 0
3 years ago
Find the value<br> 9 (2) 7<br> HELPPPP MEEEE I NEED THIS ASAP
ExtremeBDS [4]

Answer:

15/40 which is 3/8

Plug in the numbers into the variables then complete it which then gives you 3/8 simplified

7 0
3 years ago
What are the common factors of 15,45 and 90
AnnZ [28]
Answer= 1,3,5,15

which are in essence all on the factors of 15
4 0
3 years ago
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