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3 years ago

Solve the following equation. 70-10x= -10x+40

Mathematics

1 answer:

Oxana [17]3 years ago

3 0

Answer:

No solution

Step-by-step explanation:

There are no values of x that make the equation true.

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Two fair number cubes are rolled. What is the probability the numbers are equal or the sum is odd?

Marat540 [252]

Answer:

0.6667 = 66.67%

Step-by-step explanation:

If each number cube has 6 numbers, the two cubes have a total of 6 * 6 = 36 results.

To have equal numbers in each cube, the cases are:

(1,1), (2,2), (3,3), (4,4), (5,5), (6,6) -> 6 cases

To have a odd sum, the cases are:

(1,2), (1,4), (1,6),

(2,1), (2,3), (2,5),

(3,2), (3,4), (3,6),

(4,1), (4,3), (4,5),

(5,2), (5,4), (5,6),

(6,1), (6,3), (6,5). -> 18 cases

So we have a total of 18 + 6 = 24 cases, then the probability is:

P = 24 / 36 = 0.6667 = 66.67%

5 0

3 years ago

85 pts!!!! Just write the answers or something related to the answer. It’s to help others who need it!!

olasank [31]

m<CAE = 90: definition of perpendicular

p.s. ty for this!

4 0

3 years ago

Read 2 more answers

The burning time of a very large candle is normally distributed with mean of 2500 hours and standard deviation of 20 hours. Find

dezoksy [38]

Answer: C.-1.5

Step-by-step explanation:

Given: The burning time of a very large candle is normally distributed with mean $(\mu)$ of 2500 hours and standard deviation $(\sigma)$ of 20 hours.

Let X be a random variable that represent the burning time of a very large candle.

Formula: $Z=\dfrac{X-\mu}{\sigma}$

For X = 2470

$Z=\dfrac{2470-2500}{20}\\\\\Rightarrow\ Z=\dfrac{-30}{20}\\\\\Rightarrow\ Z=\dfrac{-3}{2}\\\\\Rightarrow\ Z=-1.5$

So, the z-score they corresponds to a lifespan of 2470 hours. =-1.5

Hence, the correct option is C.-1.5.

7 0

2 years ago

.7 pls :P need this so I don’t fail math

Masteriza [31]

Answer:

Step-by-step explanation:

distribute 1/2 into 2x and 4, if both sides match then its infinitely many solutions !

7 0

3 years ago

Zoey is designing a jewelry box in the shape of a rectangular prism. The base is 6 inches by 5 inches and the height is 4 inches

makvit [3.9K]

Answer:

148 square inches

Step-by-step explanation:

Step 1: finding the area of the base (upper base plus lower base)

2( L x W).

2 (6in. x 5in.)

2( 30 square inches.)

60 square inches

Step 2: finding the area of first 2 sides

2 ( l x w)

2 ( 5in x 4in)

2 ( 20 square inches.)

40 square inches

step 3: finding the area of the last 2 sides

2(lxw)

2(4in.x 6in.)

2(24 square inches.)

48 square inches

step 4: combine all the answers.

60 square inches. + 40 square inches. + 48 square inches = 148 square inches

7 0

3 years ago

Read 2 more answers