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2 years ago

Help if you would like brainliest

Mathematics

1 answer:

gladu [14]2 years ago

6 0

1. $2.78

2. If it’s 20% off you save 13.90 so 69.50- 13.90 is $55.60

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The left side of a solid block is held at a constant temperature of 200°C. The temperature profile within the block is given by

Nikitich [7]

Answer:

with T = 50⁰C, we have:

50 = 200 - 5x - x²

<=> x² + 5x = 150

<=> x² + 5x - 150 = 0

=> x = 10

6 0

2 years ago

Find all the real square roots of -196.

Slav-nsk [51]

The answer is -(3/4) and 3/4

6 0

2 years ago

The total length of pencils A, B and C is 29 cm. Pencil a is 11 cm shorter then pencil B, and pencil B is twice as long a pencil

satela [25.4K]

The length of pencil A is 5 cm

Solution:

Let the length of pencil A be "x"

Let the length of pencil B be "y"

Let the length of pencil C be "z"

The total length of pencils A, B and C is 29 cm

Therefore,

length of pencil A + length of pencil B + length of pencil C = 29

x + y + z = 29 ------------ eqn 1

Pencil A is 11 cm shorter then pencil B

x = y - 11 ------- eqn 2

Pencil B is twice as long a pencil C

y = 2z

$z = \frac{y}{2}$ ------ eqn 3

Substitute eqn 2 and eqn 3 in eqn 1

$y - 11 + y + \frac{y}{2} = 29\\\\2y + \frac{y}{2} = 29 + 11\\\\\frac{4y+y}{2} = 40\\\\5y = 80\\\\y = 16$

Substitute y = 16 in eqn 2

x = 16 - 11

x = 5

Thus length of pencil A is 5 cm

5 0

2 years ago

Question is in the picture

SSSSS [86.1K]

Answer:

reflection

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

On the blueprint of a house, 48 millimeters represents 9 meters. The length of the living room is 32 millimeters on the blueprin

tankabanditka [31]

Answer:

Step-by-step explanation:

Using the method of cross products, we solve for Q.

48/9 = 32/Q

48Q = 32 x 9

Q = 32 x 9/ 48

Q = 6

Answer: 6 meters

8 0

2 years ago