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frosja888 [35]
3 years ago
6

When f(x) = 7x^2 - 2x + 4, evaluate f(-1) f(-1) =

Mathematics
1 answer:
Blizzard [7]3 years ago
5 0

Answer:

13

Step-by-step explanation:

do u want me to elaborate on how I found it>

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After reading 7/9 of a book, 40 pages are left. Find the total number of pages in the book​
dimaraw [331]

Answer:

180 pages

Step-by-step explanation:

let x be the number of pages in the book , then

\frac{7}{9} x + 40 = x ( multiply through by 9 to clear the fraction )

7x + 360 = 9x ( subtract 7x from both sides )

360 = 2x ( divide both sides by 2 )

180 = x

The total number of pages in the book is 180

6 0
3 years ago
How to check volume of cabinets 24by72by18
mash [69]
In order to find the volume of the cabinet, use the volume formula for a rectangular prism, which is the shape of the cabinet.

lwh   Formula for volume of a rectangular prism
24 x 72 x 18   Now, plug in each of the values you've been given.
31,104   Multiply the numbers; you might want to use paper and pencil, or a calculator, if you're allowed to.

The volume of the cabinet is 31,104 un³.

Hope this helps!
3 0
3 years ago
Read 2 more answers
can someone please solve this question? enter the ordered pair that is the solution to the system of equations
r-ruslan [8.4K]
The ordered pair is (2, -3)
5 0
3 years ago
I need some help with this
Korvikt [17]


The following can be deduced from the expressions

m ∠ D = 4 × m ∠ A
m ∠ B = 3 × m ∠ A-12

Please note that the sum of angles in a triangle is 180 degress. Therefore,

M∠ A + m ∠ B + m ∠ D = 180equation(3)

Substitute for equation 1 and 2 in equation 3 as shown below

m ∠ A + 3 × m ∠ A - 12^0 + 4 x m ∠ A =180^0
m ∠ A + 3 × m ∠ A + 4 x m ∠ A = 180^0+12^0
8m ∠ A = 192^0
m ∠ A= 192^0/8
m ∠ A=24^0

Substitute for m∠A= 24 in equation 1 and 2 as shown below

m ∠ D = 4 × m ∠ A
m ∠ D = 4 × 24^0
m ∠ D = 96^0
m ∠ B = 3 × mA - 12^0
m ∠ B = 3 × 24^0 - 12
m ∠ B = 72^0 - 12^0

,

∠= °

∠= °

∠= °
5 0
2 years ago
I NEED HELP PLEASE :( I DONT UNDERSTAND! LINKS WILL BE REPORTED
kobusy [5.1K]
Count the units on the sides. On the Y axis the rectangle is 4 units and on the X axis the rectangle is 6 units. Area of a rectangle=L*W so, 6*4=24. Perimeter is 4*2 and 6*2=8+12=20. Hope this helps!
6 0
3 years ago
Read 2 more answers
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