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lapo4ka [179]
4 years ago
8

Solve the equation. 3(k−6) = 15 k = ____?

Mathematics
2 answers:
Anvisha [2.4K]4 years ago
6 0
This is the answer..........

const2013 [10]4 years ago
5 0
Distribute
3k-18=15
Get k by itself, add 18 to both sides
3k=33
Divide by 3 to both sides to make k by itself
k=11
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Margaret is cutting a block of cheese into smaller cubes measuring 1 cm by 1 cm by 1 cm.How many unit cubes of cheese can she cu
nirvana33 [79]
How what size is the large block?
Convert the measurements of the large block to cm.
Then calculate the Volume of the large cube.
The answer will be in cubic cm. That is the number of 1 cm cubes.
8 0
3 years ago
Can you help me with this question please
brilliants [131]
A) 24 - Count the boxes
B) 18 - count the boxes. 1/4 of a box is 1/4 of 8....so 2.

For C and D use the equation:
x + 3x = 32
4x = 32
x = 8

We know x (Wednesday) is 8, and Thursday is 3x. That means Thursday is 24.

C) 8
D) 24
7 0
4 years ago
Solve 5y'' + 3y' – 2y = 0, y(0) = 0, y'(O) = 2.8 y(t) =( Preview
Karolina [17]

Answer:

y=\frac{4}{5}e^{t}-\frac{4}{5}e^{-\frac{2}{5}t}

Step-by-step explanation:

The given equation 5y'' + 3y' - 2y =0 can be written as

(5D^{2}+3D-2)y(t)=0

Solving for complementary function we have Roots of (5D^{2}+3D-2) as follows

(5D^{2}+5D-2D-2)

5D(D+1)-2(D+1)=0\\\\(5D-2)(D+1)=0\\\\\therefore D=-1\\D=+2/5

Thus the complementary function becomes

y=y=c_{1}e^{m_{1}t}+c_{2}e^{m_{2}t}

where

m_{1},m_{2} are calculated roots

thus solution becomes

y=c_{1}e^{-t}+c_{2}e^{\frac{2}{5}t}

Now to solve for the coefficients we use the given boundary conditions

y(0)=0\\\\\therefore c_{1}+c_{2}=0\\\\y'(0)=-c_{1}+\frac{2}{5}c_{2}=2.8\\\\\therefore c_{2}+\frac{2}{5}c_{2}=2.8\\\\c_{2}=2\\\\\therefore c_{1}=-2}

hence the solution becomes

y=-2e^-{t}+2e^{\frac{2}{5}t}

8 0
3 years ago
HELP!!
True [87]
Yes is 12% good job hope this helps
8 0
3 years ago
How to do? I don't really understand this question
Bas_tet [7]
If 35% of toms shirts are equal to 40% of jos shirts, then you just have to find the amount of 40% of jos shirts, which is 28, found by " 70/100 x 40 " so 35% of toms shirt is 28, to answer this question, you will only have to find 5% of toms shirt which is 4 " 28/35 x 5 " therefore, multiply 4 which is 5% of toms shirts with 20, which gives you 80 , and is the amount of shirts tom has, to get the final answer for this question, just subtract 80-70=10
10 is the answer
4 0
4 years ago
Read 2 more answers
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