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Wittaler [7]
2 years ago
12

Solve for the value of k

Mathematics
2 answers:
ELEN [110]2 years ago
8 0

Answer:

k=6

Step-by-step explanation:

a line is 180deg and since there is a 90deg angle there, you can subtract it from 180, leaving you with 90.

(7k + 8) + 40 = 90     >> subtract 40 from both sides

7k + 8 = 50                >> subtract 8 from both sides

7k = 42                       >> divide both sides by 7 to get k alone

k = 6

Fofino [41]2 years ago
7 0

Answer:

Combine like terms in the left side. Substract both sides. Divide by both sides therefore. the answer is the option

Step-by-step explanation:

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Find all expressions below that are equivalent to (3)^4(10)^4
Rudik [331]

Answer:

1, and 3 are equivelent to (3)^4(10)^4

Step-by-step explanation:

(3)^4(10)^4 = 810000

1. (3^2)^2 * (10^2)^2

   (9)^2   *   (100)^2

      81     *   10000

     810000

2. (13)^4 = 28561

3. (3 * 10)^4

      (30)^4

       810000

6 0
3 years ago
I need help ASAP anyone
eduard

Answer:

90

Step-by-step explanation:

there is 6 sides of box

2 bigger and 4 smaller

area of bigger side is 5×5 = 25 this is the area of one side as we have 2 sides so are of both sides is 25 + 25 = 50

now come to the smaller sides ( we have 4 here)

are of one side is 2× 5 = 10

so are of all 4 sides is 10× 4 = 40

now we get area of 4 smaller sides and 2 bigger sides

total area of box is 40+ 50 = 90

hope you understand

5 0
3 years ago
Make Q the subject of the formula A = Q2 - 2a.
son4ous [18]

Answer:

\huge\boxed{Q = \sqrt{A+2a}}

Step-by-step explanation:

A = Q^2 -2a

Adding 2a to both sides

Q^2 = A+2a

Taking sqrt on both sides

Q = \sqrt{A+2a}

8 0
3 years ago
Help me plz branniest to whoever right
Iteru [2.4K]

Answer:

vertex: (-1,25)

aos; -1

left x int: -6

right x int: 4

(not sure)

range is less than of equal to 25

4 0
2 years ago
Jess is painting a giant arrow on a playground find the area of the giant arrow
IgorC [24]
First solve the area of the arrow, the arrow consist of a rectangle that has a dimensions of 10 ft x 18 ft. and the triangle has a base of 20 ft and the height is 6 ft.

A = xy + 0.5bh
where x and y are the dimensions of the rectangle
b is the base of the triangle
h is the height of the traingle

A = (10)(18) + 0.5(20)(6)
A = 240 sq ft

number can of paint = 240 sq ft ( 1 can / 100 sq ft)
=2.4 can of paint, since you cant purchase a fraction of the can then the he need to buy 3 cans of paint

Hope this helps!

P.S- Can you plz mark min as brainliest??

Thank You
3 0
3 years ago
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