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3 years ago

I really need help on this one! #3 :((

Mathematics

2 answers:

photoshop1234 [79]3 years ago

6 0

Answer:

d. 6

Step-by-step explanation:

wel3 years ago

5 0

Answer:

answer is d

Step-by-step explanation:

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Helena wants to paint a box in the shape of a cube with sides that are 18 inches long. what is the surface area that Helena will

yan [13]

Answer:

1944 Inches Squared

Step-by-step explanation:

Surface area Formula for a Cube:

$A = 6a^2$

The "edge", which is also the side, is 18 inches.

$a = 18$

Solve the formula.

$A= 6a^2 = 6(18)^2 = 6 * 18^2\\18^2 = 324\\324 * 6 = 1944\\A=1944$

The cube's surface area should be 1944 square inches.

5 0

2 years ago

One week, Isaiah earned $133.00 at his job when he worked for 7 hours. If he is paid

sukhopar [10]

First week he get pays 19 and hour
19 multiply by 33 hours that he work on the second week is what he get pays ($627.00)
Answers is 33 hours

5 0

2 years ago

2x+3y=-27 is one equation in a coincidental system of two linear equations. the other equation is __y=__x-102.

Snezhnost [94]

Given:

An equation in a coincidental system of two linear equations:

2x + 3y = -27

The other equation is

_y = _x - 102

Rearrange the second equation to be identical to the first

_y - _x = -102

Determine the factor, -102/-27 = 3.78

for x, 2 * 3.78 = 7.56
for y, 3 * 3.78 = 11.33

The second equation, 11.33y - 7.56x = -102

3 0

3 years ago

The quality control team of a company checked 800 digital cameras for defects. The team found that 20 cameras had lens defects,

dmitriy555 [2]

Answer:

0.025

Step-by-step explanation:

-This is a conditional probability problem.

-Let L denote lens defect and C charging defect.

#We first calculate the probability of a camera having a lens defect;

$P(lens)=\frac{Lens}{Total}\\\\=\frac{20}{800}\\\\=0.025$

#Calculate the probability of a camera having a charging defect:

$P(Charging)=\frac{Charging}{Total}\\\\=\frac{25}{800}\\\\=0.03125$

The the probability that a camera has a lens defect given that it has a charging defect is calculated as:

$P(L|C)=\frac{P(C)P(L)}{P(C)}\\\\=\frac{0.025\times 0.03125}{0.03125}\\\\=0.025$

Hence, the probability that a camera has a lens defect given that it has a charging defect is 0.025

6 0

2 years ago

Find (-10) if () = 8x +5

Alja [10]

Answer:

Find (-10) if () = 8x +5

Step-by-step explanation:

i need full of the answer plz

4 0

2 years ago